Independent Damp Surveys in London
- PCA Registered Surveyors
- Qualified to industry standards (CSRT & CSSW)
- Public liability limit of indemnity £5 million
Find out what our customers have to say
Independent Damp Survey Information & Specialist Equipment Across London
At Independent Damp Survey, we provide fully independent damp and moisture surveys across London and the M25. Our service is designed for homebuyers, sellers, landlords, homeowners, tenants, estate agents, developers, solicitors and property professionals who need a clear, evidence-based assessment of damp, leaks, black mould, condensation, ventilation issues and timber decay.
Using a wide range of professional diagnostic equipment, we investigate hidden moisture within building materials, inspect concealed areas, assess roof-level defects, test ventilation performance and identify issues that basic damp meter surveys can miss. Our equipment includes deep-reading moisture meters, non-invasive scanners, thermal imaging cameras, HD borescopes, humidity monitors, airflow testers, 4K drones and environmental air quality screening tools.
We survey all types of residential and commercial properties across Greater London. With appointments often available within days and comprehensive written reports issued within 24 hours, we provide the independent evidence you need to make informed property decisions.
A Completely Independent Damp Survey Service
Our survey service is independent because we do not undertake damp-proofing or building repairs. We are paid solely to inspect the property, diagnose the problem and produce a professional report, not to sell treatments.
Companies that earn money from remedial work may benefit financially when extensive repairs are recommended. We remove that conflict of interest by keeping our surveying service strictly separate from contractors and treatment providers.
We do not carry out damp-proofing, structural waterproofing, or remedial building work.
Our surveyors have no financial interest in the outcome of inspections or any recommended repairs.
We do not receive referral fees or commissions from contractors, repair companies, or product suppliers.
We never recommend specific contractors or repair companies for any remedial work identified.
Our role is to diagnose problems, not to sell treatments or remedial products of any kind.
Our conclusions are based solely on evidence and professional judgment, free from external influence.
We report findings accurately and transparently, without exaggeration or understatement.
We only recommend actions that are proportionate to the severity of issues identified.
All investigations follow a systematic, evidence-based methodology to ensure accurate diagnosis.
Reports are written in clear, accessible language so you fully understand the findings.
We never use high-pressure tactics or create false urgency to prompt unnecessary action.
We have no commercial relationships with any contractors, suppliers, or repair companies.
Our independent assessments provide trustworthy second opinions on existing diagnoses.
We report defects accurately without exaggerating their severity or potential consequences.
Our advice is always centred on what is best for the property, not on generating additional work.
Who Can Use Our Survey Service?
We undertake independent damp inspections for private customers, businesses and organisations across the residential and commercial property sectors.
Customers & Organisations We Assist
- Homebuyers and Property Sellers
- Homeowners, Owner-Occupiers and Residential Tenants
- Private and Commercial Landlords
- Estate Agencies and Letting Agencies
- Property Management Companies and Managing Agents
- Property Investors and Building Developers
- Builders and Main Contractors requiring specialist diagnostic data
- Commercial Property Owners, Freeholders and Business Occupiers
- Housing Associations, Housing Providers and Local Authorities
- Conveyancing Solicitors and Legal Representatives
- Insurance Providers, Assessors and Loss Adjusters
Qualification list
PCA-Certificated Surveying
-
CSDB (Certificated Surveyor of Dampness in Buildings): This certification ensures your damp diagnosis is carried out to a recognised industry standard.
-
CSTDB (Certificated Surveyor of Timber and Dampness in Buildings): This means we can assess timber decay, wet rot, dry rot and wood-boring insect activity in the same visit, giving you a complete picture of your property’s condition.
-
CSSW (Certificated Surveyor in Structural Waterproofing): Where basement or below-ground waterproofing is involved, this certification ensures that any tanking or structural waterproofing solution we recommend is specified the first time correctly.
CSCS
-
CSCS (Construction Skills Certification Scheme): Our experts carry a CSCS card, which confirms they’re authorised and trained to work safely on-site, giving you confidence that the team in your home meets recognised industry safety standards.
Asbestos awareness
-
Asbestos awareness: Older properties may contain asbestos, particularly in areas where damp and timber work are common. Our team holds UKATA-accredited Asbestos Awareness training as standard and where a job risks disturbing such materials, our experts are more than qualified to manage the work safely and in full compliance with UK regulations.
30-Year Warranty + 10-Year Insurance-Backed Guarantee
Your damp repair is protected for decades.
- 30-Year Warranty: All remediation work is covered by a 30-year workmanship warranty, protecting your property against recurrence of the treated issue.
- 10-Year Insurance-Backed Guarantee (IBG): Your guarantee is insurance-backed for 10 years through Quality Assured National Warranties (QANW), so your cover remains valid even if we’re unable to fulfil it ourselves.
- 24-Hour Report Delivery: Comprehensive digital survey reports are typically issued within 24 hours of the inspection’s completion.
Who Can Use Our Survey Service?
We undertake independent damp inspections for private customers, businesses and organisations across the residential and commercial property sectors.
Customers & Organisations We Assist
Homebuyers and Property Sellers
Homeowners, Owner-Occupiers and Residential Tenants
Private and Commercial Landlords
Estate Agencies and Letting Agencies
Property Management Companies and Managing Agents
Property Investors and Building Developers
Builders and Main Contractors requiring specialist diagnostic data
Commercial Property Owners, Freeholders and Business Occupiers
Housing Associations, Housing Providers and Local Authorities
Conveyancing Solicitors and Legal Representatives
Insurance Providers, Assessors and Loss Adjusters
Reasons for Arranging an Independent Survey
An independent damp inspection provides essential clarity in numerous property scenarios:
- Before purchasing a house or flat (pre-purchase due diligence)
- Before placing a property on the open market
- Before entering a residential tenancy or commercial lease
- After flooding or a major escape of water
- Following a suspected plumbing, drainage, or roof leak
- Before commencing major renovation or refurbishment works
- When requested by a conveyancing solicitor, insurer, or mortgage lender
- When damp patches, black mould, or persistent musty odours are present
- After receiving conflicting advice from damp-proofing contractors
- Before committing money to expensive remedial work
- When objective reassurance about a property’s condition is needed
Problems We Investigate
If your property concern involves water, moisture, dampness, mould, or timber decay, our survey is designed to establish the likely cause and provide impartial recommendations with zero conflict of interest. We investigate:
Rising Damp, Penetrating Damp & Condensation
Mould, Black Mould & High Indoor Humidity
Plumbing Leaks, Roof Leaks & General Water Ingress
Flood Damage, Escape of Water & Hidden Structural Moisture
Balcony, Terrace, Basement, Cellar & Chimney Damp
Insufficient Ventilation & Moisture-Related Building Defects
Wet Rot, Dry Rot, Woodworm & General Timber Deterioration
Professional Diagnostic Survey Equipment
Surface Damp Meter
Purpose:
Takes comparative surface moisture readings across accessible walls, floors, ceilings and building joinery.
Common Uses / Notes:
Maps surface moisture profiles to help identify rising damp, penetrating damp, condensation, or active plumbing leaks.
Deep-Penetration Damp Meter
Purpose:
Detects moisture changes deep below the immediate surface of structural materials without destruction.
Common Uses / Notes:
Evaluates dampness within wall cores, beneath floorboards, inside subfloors and behind finishes without removing plaster.
Non-Invasive Moisture Scanner
Purpose:
Scans surface planes non-invasively without inserting pins or probes into decorated finishes.
Common Uses / Notes:
Checks decorated walls, tiled surfaces and delicate floor coverings to trace sub-surface water migration non-destructively.
HD Borescope Inspection Camera
Purpose:
Provides high-definition visual examination inside enclosed, narrow, or inaccessible building cavities.
Common Uses / Notes:
Inspects subfloor voids, wall cavities, dry lining and enclosed pipework to locate leaks and defects with minimal disruption.
4K Inspection Drone
Purpose:
Captures high-resolution imagery and video of high-level external structures and rooflines.
Common Uses / Notes:
Inspects roof tiles, chimney stacks, lead flashing, parapet walls, valleys and gutters to locate water ingress sources.
Air Humidity Sensor
Purpose:
Measures ambient air temperature and relative humidity (%RH) levels within living areas.
Common Uses / Notes:
Determines whether atmospheric moisture, cold bridging, or insufficient ventilation supports surface condensation and mould growth.
Thermal Imaging Camera
Purpose:
Visualises surface temperature differentials across walls, ceilings and floors.
Common Uses / Notes:
Detects cold spots, missing insulation, thermal bridges, evaporative cooling zones and concealed water leaks.
Airflow & Ventilation Detector
Purpose:
Measures volumetric air extraction performance (L/s or m3/h) of mechanical extractor fans.
Common Uses / Notes:
Tests kitchen, bathroom and utility fans to verify compliance with UK Building Regulations Part F and control condensation.
Gas Screening Instrument
Purpose:
Screens indoor environments for sewer gas intrusion, combustible gases and combustion concerns.
Common Uses / Notes:
Traces foul odours, soil stack leaks and sewer gases (H2S, NH3, CH4, CO, O2). Does not replace Gas Safe registered safety checks.
Chemical Vapour Detector
Purpose:
Screens air for Volatile Organic Compounds (TVOC/VOC) and chemical substances like formaldehyde (HCHO).
Common Uses / Notes:
Investigates unexplained chemical odours, building material off-gassing, post-flood air safety and indoor air quality.
Airborne Particle Detector
Purpose:
Measures airborne particulate concentrations across precise micron size ranges (PM1.0, PM2.5, PM10).
Common Uses / Notes:
Assesses fine dust, smoke, airborne matter and environmental air quality following water damage or mould outbreaks.
Electrical Socket & RCD Tester
Purpose:
Provides basic safety and protective circuit screening in areas affected by dampness.
Common Uses / Notes:
Identifies socket wiring faults, tests RCD trip functions and checks AC voltage in wet areas. Does not replace an EICR.
TYPES OF DAMP WE SURVEY
Case Studies
Advanced Investigation & Clear Reporting Across London
The quality of a damp survey depends on the surveyor’s knowledge, the inspection’s scope and the diagnostic equipment used. A simple surface test may identify an area with elevated moisture, but it cannot explain why water is present.
At Independent Damp Survey, our equipment enables us to evaluate walls, flooring, ceilings, structural timbers, indoor humidity, mechanical ventilation, concealed voids and high-level external defects together. This is critical because similar-looking damp patches often stem from entirely different root causes and require different responses.
Our surveyors investigate rising damp, rain penetration, condensation, plumbing leaks, roof failures, trapped construction moisture and basement water ingress. When included in the selected service level, we also inspect for wet rot, dry rot and woodworm.
The purpose of our inspection is not to generate a list of unnecessary contractor treatments. It is to explain the evidence, identify the most probable cause and recommend proportionate, unbiased action. We cover properties throughout the M25, from lower-ground-floor flats and historic converted houses to family homes, modern apartment blocks and commercial premises.
Equipment and Inspections Provided With Each Survey
Damp Survey
Standard price: £299 + VAT
Special offer: £199 + VAT until the end of this month
The Level 1 service is a straightforward inspection of the main accessible areas for visible damp, leaks and moisture-related defects.
Equipment Included
- Surface damp meter
Survey Checks
- Accessible walls
- Accessible floors
- Accessible ceilings
- Visible drains and plumbing for signs of leakage
- Damp information and prevention guide
Suitable For
Level 1 is suitable for relatively simple concerns, including a visible damp patch, suspected rising damp, minor staining or a general moisture check.
It is intended for customers who require a basic inspection using a damp meter and do not need deeper moisture testing, thermal imaging, timber investigation, ventilation measurements or roof-level drone imagery.
Damp and Timber Survey
Standard price: £399 + VAT
Special offer: £299 + VAT until the end of this month
Level 2 contains the accessible checks included with Level 1 and adds deeper moisture detection and inspections for common timber defects.
Equipment Included
- Surface damp meter
- Deep-penetration moisture meter
- Non-invasive moisture scanner
Survey Checks
- Walls, floors and ceilings
- Visible drains and plumbing for signs of leakage
- Wet rot
- Dry rot
- Woodworm
- Timber decay
- Deeper moisture investigation
- Non-invasive scanning of accessible floor and subfloor areas
- Damp information and prevention guide
Suitable For
This survey is appropriate when moisture may be concealed behind finishes or within building materials. It is also suitable when there are concerns about wet rot, dry rot, woodworm or general timber deterioration.
Level 2 is a useful choice for buyers and sellers who want a more comprehensive inspection than the basic Level 1 service but do not require the complete advanced equipment package or drone inspection included with Level 3.
Comprehensive Damp Survey
Standard price: £499 + VAT
Special offer: £399 + VAT until the end of this month
Level 3 is our most extensive standard survey. It incorporates the checks offered by Levels 1 and 2 and adds thermal, environmental, ventilation, concealed-area and high-level external inspections.
Equipment Included
- Surface damp meter
- Deep-penetration moisture meter
- Non-invasive moisture scanner
- Thermal imaging camera
- Indoor humidity sensor
- HD borescope
- Airflow and ventilation tester
- 4K drone
- Socket and RCD circuit tester
Survey Checks
- Accessible walls, floors and ceilings
- Visible drains and plumbing
- Wet rot, dry rot and woodworm
- Timber condition
- Deep moisture detection
- Accessible floor and subfloor scanning
- Thermal imaging
- Humidity measurement
- Borescope inspection where appropriate access exists
- Brick pointing
- Visible damp-proof course
- Extractor-fan airflow
- Drone imagery where conditions permit
- Roof coverings
- Chimney stacks
- Guttering
- General visible structural condition
- Basic socket and RCD checks
Suitable For
Level 3 is designed for homebuyers, sellers and property owners who want the most detailed standard inspection. It is particularly useful when several possible causes must be considered, including roof defects, hidden leaks, dampness, mould, condensation, timber decay and inadequate ventilation.
Roof, chimney and gutter defects can be expensive and may be difficult to see from the ground. A drone inspection can identify visible high-level issues before a purchase is completed, potentially giving the buyer an opportunity to investigate costs or reconsider their position.
Even a comparatively small roof defect may cost more to correct than the price difference between survey levels. Water entering from above can also lead to plaster damage, internal staining, mould and timber decay if it is left unresolved.
Level 3 is therefore the most suitable option for customers who want detailed evidence before buying, selling, repairing or maintaining a property.
Optional Laboratory and Air-Quality Services
Laboratory Testing of Plaster Samples
Price £299 + VAT
Small samples can be removed from affected plaster and submitted to an independent laboratory. Testing examines the presence and concentration of hygroscopic salts, including chlorides and nitrates associated with groundwater and long-term moisture contamination.
Salt analysis can provide valuable supporting evidence when distinguishing rising damp from condensation, penetrating damp or other moisture sources. Ground salts may be carried into masonry and plaster as moisture rises through a wall. Once deposited, some salts can continue attracting moisture from the air.
The laboratory findings are considered alongside moisture readings, the damp profile, construction details and visual observations. Laboratory testing reduces reliance on electrical moisture-meter readings alone and can strengthen the evidence supporting a diagnosis.
Minor invasive sampling is necessary because physical plaster samples must be collected. This is the only listed add-on that requires small sections of material to be removed.
Mould Laboratory Analysis, Including qPCR DNA and Swab Testing
Price £299 + VAT
Swab samples can be collected from selected surfaces and submitted to an accredited laboratory for qPCR DNA mould analysis.
A visual inspection may confirm that mould is present but cannot always identify its species or measure the degree of contamination. Laboratory analysis can provide more detailed information about the mould detected in a particular sample.
Testing may be helpful when:
- Musty odours persist
- Mould continually returns after cleaning
- Previous flooding or leaks have occurred
- Contamination is suspected behind furniture or within cupboards
- Growth may be concealed in restricted locations
- Additional evidence is required before remedial work
- Occupants have concerns about the internal environment
Results can help establish whether contamination appears limited or more significant and whether it may be connected to an underlying moisture problem. Testing applies to the locations sampled and should be interpreted alongside the property inspection.
Gas, Chemical Vapour and Airborne Particle Testing
Price £299 + VAT
This optional service provides a wider assessment of selected gases, vapours, particles and indoor-air indicators. The testing undertaken depends on the concerns reported and the conditions found at the property.
Available screening can include:
- Indoor air quality indicators — IAQ
- Volatile organic compounds — TVOC/VOC
- Formaldehyde — HCHO
- Fine particles — PM1.0, PM2.5 and PM10
- Dust and smoke particles
- Sewer gas indicators — H₂S, NH₃ and CH₄
- Combustible gas screening — CH₄ and C₃H₈
- Carbon monoxide — CO
- Hydrogen sulphide — H₂S
- Ammonia — NH₃
- Oxygen concentration — O₂
- Ventilation and stale-air assessment
- Drain-odour investigation
- Chemical-smell investigation
- Post-leak air and surface-condition screening
- Combustion gas indicators
- Off-gassing from building materials
- General airborne pollutant screening
This service can be beneficial when:
- Damp, leaks and mould can affect the internal environment, but not every concern is visible during a building inspection. Air testing may help identify unusual particle concentrations, chemical vapours, poor ventilation, sewer-gas indicators or off-gassing from recently installed materials.
- It can also support an investigation into foul or unexplained odours associated with drains, stagnant water, flood damage, damp materials or chemicals.
This service is intended as preliminary screening. It does not replace emergency gas-leak procedures, professional gas appliance testing, specialist occupational-hygiene assessments or comprehensive laboratory air sampling.
Damp Survey Costs
Transparent pricing with no hidden fees for our independent, unbiased surveys.
Level 1
What’s included:
- Inspection of walls
- Inspection of floors
- Inspection of ceilings
- Leak inspection of drains and plumbing
- Damp information and prevention guide
Level 2
What’s included:
- Everything in Level 1
- Dry rot inspection
- Wet rot inspection
- Woodworm inspection
- Damp information and prevention guide
Level 3 (Most Popular)
What’s included:
- Thermal Imaging
- Air humidity testing
- HD boroscope camera
- Brickwork pointing inspection
- DPC inspection
- Ventilation flow test on extractor fans
- 4K drone imagery roof, chimney stack
and guttering inspection - Structural condition inspection
- Inspection of walls
- Inspection of floors
- Inspection of ceilings
- Leak inspection of drains and plumbing
- Dry rot inspection
- Wet rot inspection
- Woodworm inspection
- Damp information and prevention guide
Survey Add Ons
Add On 1
Laboratory analysis Of plaster identifies hygroscopic salts such as chlorides and nitrates. which indicate whether damp is caused by rising groundwater or by plumbing leaks, This testing removes guesswork, allowing the exact source of moisture to be identified so the correct treatment is applied rather than carrying out unnecessary damp-proofing work.
Add On 2
qPCR DNA mould testing detects microscopic mould spores that are invisible during a normal inspection and van remain hidden behind walls, floors. or inside building rkaterials. It identifies the exact mould species present and the contamination level, allowing hidden mould problems to be confirrned and properly treated before they affect the property or occupants’ health.
Qualifications: All our surveyors are PCA and CSRT qualified for remedial treatments and also CSSW qualified for structural waterproofing.
Next day report: You will receive the report within 24 hours of the inspection taking place.
These are the tools we use
Damp Meter
A damp meter is a diagnostic tool used to detect and measure moisture levels within building materials such as plaster, brick, timber, and concrete.
Borescope camera
borescope camera is a small inspection camera attached to a flexible semi-rigid cable that allows you to see inside areas that are otherwise inaccessible.
Drone Inspection
A drone is a remotely operated aerial device equipped with a camera that allows visual inspection from above without the need for scaffolding or ladder.
Air Humidity Sensor
Air humidity sensor measures the amount of moisture present in the air, expressed as relative humidity (RH) in percentage. It helps determine whether indoor conditions are contributing to condensation, mould growth, or damp-related issues.
Thermal Imaging Camera
A thermal imaging camera detects temperature differences on surfaces by using infrared technology to produce a heat map image. In damp investigations, it helps identify cold spots, moisture intrusion, insulation defects, thermal bridging and leaks.
Air Flow Ventilation Detector
An air flow ventilation detector measures the movement and volume of air passing through vents, extractor fans, and air bricks. It confirms whether ventilation systems are working properly and achieving adequate air changes within a room. Poor airflow leads to trapped moisture, high humidity, condensation on cold surfaces, and ultimately mould growth.
Mould Lab Swab Testing
A mould swab test is carried out to confirm the presence of hidden mould growth and identify the specific species involved. Surface mould is not always visible, especially behind furniture, inside cavities, or within ventilation systems. Laboratory analysis of a swab sample determines whether active mould spores are present and what type they are, which helps assess potential health risks and decide the correct remediation approach rather than relying on visual assumption alone.
Lab Analysis of Plaster
Laboratory analysis of plaster is used to identify the type of salts present within the material, typically chlorides and nitrates. The presence and concentration of these salts help determine whether the moisture source is consistent with rising damp, ground contamination, or another forms [sic] of water ingress. such as mains water leak, This removes guesswork and prevents misdiagnosis, ensuring the correct remedial treatment is specified rather than applying unnecessary or ineffective solutions.
Professional Survey Equipment
Surface Damp Meter
Purpose:
Takes comparative surface moisture readings across accessible walls, floors, ceilings and building joinery.
Common Uses / Notes:
Maps surface moisture profiles to help identify rising damp, penetrating damp, condensation, or active plumbing leaks.
Deep-Penetration Damp Meter
Purpose:
Detects moisture changes deep below the immediate surface of structural materials without destruction.
Common Uses / Notes:
Evaluates dampness within wall cores, beneath floorboards, inside subfloors and behind finishes without removing plaster.
Non-Invasive Moisture Scanner
Purpose:
Scans surface planes non-invasively without inserting pins or probes into decorated finishes.
Common Uses / Notes:
Checks decorated walls, tiled surfaces and delicate floor coverings to trace sub-surface water migration non-destructively.
HD Borescope Inspection Camera
Purpose:
Provides high-definition visual examination inside enclosed, narrow, or inaccessible building cavities.
Common Uses / Notes:
Inspects subfloor voids, wall cavities, dry lining and enclosed pipework to locate leaks and defects with minimal disruption.
4K Inspection Drone
Purpose:
Captures high-resolution imagery and video of high-level external structures and rooflines.
Common Uses / Notes:
Inspects roof tiles, chimney stacks, lead flashing, parapet walls, valleys and gutters to locate water ingress sources.
Air Humidity Sensor
Purpose:
Measures ambient air temperature and relative humidity (%RH) levels within living areas.
Common Uses / Notes:
Determines whether atmospheric moisture, cold bridging, or insufficient ventilation supports surface condensation and mould growth.
Thermal Imaging Camera
Purpose:
Visualises surface temperature differentials across walls, ceilings and floors.
Common Uses / Notes:
Detects cold spots, missing insulation, thermal bridges, evaporative cooling zones and concealed water leaks.
Airflow & Ventilation Detector
Purpose:
Measures volumetric air extraction performance (L/s or m3/h) of mechanical extractor fans.
Common Uses / Notes:
Tests kitchen, bathroom and utility fans to verify compliance with UK Building Regulations Part F and control condensation.
Gas Screening Instrument
Purpose:
Screens indoor environments for sewer gas intrusion, combustible gases and combustion concerns.
Common Uses / Notes:
Traces foul odours, soil stack leaks and sewer gases (H2S, NH3, CH4, CO, O2). Does not replace Gas Safe registered safety checks.
Chemical Vapour Detector
Purpose:
Screens air for Volatile Organic Compounds (TVOC/VOC) and chemical substances like formaldehyde (HCHO).
Common Uses / Notes:
Investigates unexplained chemical odours, building material off-gassing, post-flood air safety and indoor air quality.
Airborne Particle Detector
Purpose:
Measures airborne particulate concentrations across precise micron size ranges (PM1.0, PM2.5, PM10).
Common Uses / Notes:
Assesses fine dust, smoke, airborne matter and environmental air quality following water damage or mould outbreaks.
Electrical Socket & RCD Tester
Purpose:
Provides basic safety and protective circuit screening in areas affected by dampness.
Common Uses / Notes:
Identifies socket wiring faults, tests RCD trip functions and checks AC voltage in wet areas. Does not replace an EICR.
Survey Levels & Package Specifications
Level 1
Standard Damp Survey
Standard price: £299 + VAT
Promotional Price: £199 + VAT (Limited Time Offer)
The Level 1 service is a straightforward inspection of the main accessible areas for visible damp, leaks and moisture-related defects.
Equipment provided
- Surface damp meter
Inspection coverage
- Accessible walls
- Accessible floors
- Accessible ceilings
- Visible drains and plumbing for signs of leakage
- Damp information and prevention guide
Who should choose Level 1?
Level 1 is suitable for relatively simple concerns, including a visible damp patch, suspected rising damp, minor staining or a general moisture check.
It is intended for customers who require a basic inspection using a damp meter and do not need deeper moisture testing, thermal imaging, timber investigation, ventilation measurements or roof-level drone imagery.
Level 2
Detailed Damp & Timber Survey
Standard price: £399 + VAT
Promotional Price: £299 + VAT (Limited Time Offer)
Level 2 contains the accessible checks included with Level 1 and adds deeper moisture detection and inspections for common timber defects.
Equipment provided
- Surface damp meter
- Deep-penetration moisture meter
- Non-invasive moisture scanner
Inspection coverage
- Walls, floors and ceilings
- Visible drains and plumbing for signs of leakage
- Wet rot
- Dry rot
- Woodworm
- Timber decay
- Deeper moisture investigation
- Non-invasive scanning of accessible floor and subfloor areas
- Damp information and prevention guide
Who should choose Level 2?
This survey is appropriate when moisture may be concealed behind finishes or within building materials. It is also suitable when there are concerns about wet rot, dry rot, woodworm or general timber deterioration.
Level 2 is a useful choice for buyers and sellers who want a more comprehensive inspection than the basic Level 1 service but do not require the complete advanced equipment package or drone inspection included with Level 3.
Level 3
Comprehensive Damp Survey
Standard price: £499+ VAT
Promotional Price: £399 + VAT (Limited Time Offer)
Level 3 is our most extensive standard survey. It incorporates the checks offered by Levels 1 and 2 and adds thermal, environmental, ventilation, concealed-area and high-level external inspections.
Equipment provided
- Surface damp meter
- Deep-penetration moisture meter
- Non-invasive moisture scanner
- Thermal imaging camera
- Indoor humidity sensor
- HD borescope
- Airflow and ventilation tester
- 4K drone
- Socket and RCD circuit tester
Inspection coverage
- Accessible walls, floors and ceilings
- Visible drains and plumbing
- Wet rot, dry rot and woodworm
- Timber condition
- Deep moisture detection
- Accessible floor and subfloor scanning
- Thermal imaging
- Humidity measurement
- Borescope inspection where appropriate access exists
- Brick pointing
- Visible damp-proof course
- Extractor-fan airflow
- Drone imagery where conditions permit
- Roof coverings
- Chimney stacks
- Guttering
- General visible structural condition
- Basic socket and RCD checks
Who should choose Level 3?
Level 3 is designed for homebuyers, sellers and property owners who want the most detailed standard inspection. It is particularly useful when several possible causes must be considered, including roof defects, hidden leaks, dampness, mould, condensation, timber decay and inadequate ventilation.
Roof, chimney and gutter defects can be expensive and may be difficult to see from the ground. A drone inspection can identify visible high-level issues before a purchase is completed, potentially giving the buyer an opportunity to investigate costs or reconsider their position.
Even a comparatively small roof defect may cost more to correct than the price difference between survey levels. Water entering from above can also lead to plaster damage, internal staining, mould and timber decay if it is left unresolved.
Level 3 is therefore the most suitable option for customers who want detailed evidence before buying, selling, repairing or maintaining a property.
Optional Laboratory and Air-Quality Services
Laboratory Testing of Plaster Samples
Price £299 + VAT
Small plaster samples are carefully taken from affected walls and submitted to an independent laboratory for salt analysis. The laboratory tests for the presence and precise concentration of hygroscopic salts, including nitrates and chlorides.
Diagnostic Value: Soluble ground salts are drawn up through masonry during rising damp and remain in plaster permanently. Salt analysis scientifically differentiates true rising damp from condensation or historic leak contamination.
Note: Plaster sampling requires minor material removal and is our only add-on involving minor invasive work.
Mould Laboratory Testing & qPCR DNA Analysis
Price £299 + VAT
Surface swab or lift samples are submitted to an accredited laboratory for advanced qPCR DNA analysis.
Diagnostic Value: Accurately identifies exact mould species, measures contamination concentrations and detects hidden fungal growth inside cupboards or behind dry lining. Delivers impartial scientific evidence to guide safe environmental remediation.
Testing may be helpful when:
- Musty odours persist
- Mould continually returns after cleaning
- Previous flooding or leaks have occurred
- Contamination is suspected behind furniture or within cupboards
- Growth may be concealed in restricted locations
- Additional evidence is required before remedial work
- Occupants have concerns about the internal environment
Results can help establish whether contamination appears limited or more significant and whether it may be connected to an underlying moisture problem. Testing applies to the locations sampled and should be interpreted alongside the property inspection.
Gas, Chemical Vapour & Airborne Particle Testing
Price £299 + VAT
Comprehensive environmental air quality and gas screening tailored to specific property concerns.
Screening Suite Includes:
- Indoor air quality indicators — IAQ
- Volatile organic compounds —
- TVOC/VOC
- Formaldehyde — HCHO
- Fine particles — PM1.0, PM2.5 and PM10
- Dust and smoke particles
- Sewer gas indicators — H2S, NH3 and CH4
- Combustible gas screening — CH4 and C3H8
- Carbon monoxide — CO
- Hydrogen sulphide — H2S
- Ammonia — NH3
- Oxygen concentration — O2
- Ventilation and stale-air assessment
- Drain-odour investigation
- Chemical-smell investigation
- Post-leak air and surface-condition screening
- Combustion gas indicators
- Off-gassing from building materials
- General airborne pollutant screening
Diagnostic Value: Identifies hidden airborne pollutants, drain odours, chemical off-gassing and stale air problems.
Note: This service is intended as preliminary screening. It does not replace emergency gas-leak procedures, professional gas appliance testing, specialist occupational-hygiene assessments or comprehensive laboratory air sampling.
Contact Us
For an in-depth survey of your property or simply to talk to one of our damp proofing specialists in London
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