Discuss fire and facade advice
Share the building type, height, tenure and any existing reports so we can identify the right next step.
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External Envelope Risk
Facade investigations help clients move from symptoms such as water ingress, cracking, panel movement or cladding concerns to a defined evidence-led remedial plan.
Our RICS regulated building consultancy support combines building pathology, external envelope inspection and project advisory input, with fire-safety interfaces considered where relevant. A facade investigation is a building fabric assessment — it is not a FRAEW or an EWS1, and where that specialist input is required we identify it clearly.
What to send, and what you receive
Share a few building details and we will confirm the right assessment or survey scope and a fee before you instruct.
What to send before we quote
- The building address and postcode
- Height or number of storeys, if known
- Tenure and how the building is used
- Any existing fire risk assessment or fire reports
- Drawings or previous external wall information
What you receive
- A written assessment, survey or review suited to the instruction
- Findings and recommended next steps
- A clear scope of what was and was not assessed
Some work can need specialist input (for example opening-up, laboratory analysis or a fire engineer); we set out where this applies and coordinate it where instructed. Ask what the report would include.
What this service covers
London facades are exposed to complex weathering, access constraints, mixed historic and modern construction, and incomplete records on refurbished buildings.
Building envelope and external wall defects
Facade investigations consider external walls, rainscreen cladding, render, masonry, curtain walling, sealants and weathering details.
Water ingress
We investigate rain penetration, defective interfaces, failed sealants, parapets, roofs, balconies and poorly detailed junctions.
Cladding and rainscreen defects
Surveys can identify visible failure, movement, panel issues, fixings concerns and water management problems.
Curtain walling and fixings
Inspection can review glazing systems, movement joints, brackets, fixings, corrosion risk and access limitations.
Cavity barriers and fire-safety interfaces
Facade defects often overlap with cavity barrier, external wall and cladding fire safety concerns.
Intrusive opening-up
Where visible inspection is insufficient, targeted opening-up can help confirm hidden construction and material condition.
Remedial planning
Findings can inform maintenance plans, remedial works specification and contractor tender support.
When a facade investigation is needed
Clients usually come to us with a symptom or an unknown, not a survey name. These are the typical triggers.
- There is recurring water ingress through the external wall.
- Render, cladding or panels are cracking or moving.
- The external wall build-up is unknown before refurbishment.
- A defect is affecting a sale, remortgage or block budget.
- Cladding or facade condition evidence is needed before remediation.
- A managing agent or freeholder needs the cause established.
- Fixings, brackets or curtain walling need condition assessment.
- You need to know whether a FRAEW or fire engineer is required.
London building safety context
The investigation scope needs to be proportionate and clear about what can be seen, what needs opening-up and what specialist input may be required.
Our advice is evidence-led and written for serious property decision-makers. Where legal advice, specialist fire engineering input or statutory role appointments are required, those matters are identified clearly rather than implied.
London facades combine weathering exposure, access constraints and a mix of historic and modern construction that rarely matches the original drawings. Solid and cavity masonry on period buildings, post-war concrete and panel systems, and later rainscreen, render and curtain-walling overclads all fail in different ways, and refurbishment often leaves the true external wall build-up undocumented. Water ingress on London blocks frequently traces back to failed sealant joints, parapet and coping details, balcony thresholds, or the interface between old and new construction rather than the visible cladding itself, so diagnosing the actual path matters more than replacing the obvious element. Access is often the practical constraint: mansion blocks, tight urban sites and conservation-area elevations can rule out full scaffolding, so we plan proportionate inspection using drone survey and targeted opening-up. Where a defect overlaps external wall fire risk, we flag whether a FRAEW to PAS 9980 or fire engineer input is required.
Outputs and next steps
Defect diagnosis
Clear opinion on likely causes of facade failure, water ingress or envelope deterioration.
Investigation plan
Recommendations for access, opening-up, testing, records review and further specialist input where required.
Remedial specification support
Scope development for facade repair, cladding remediation, water ingress works and maintenance planning.
Portfolio advice
Reporting suitable for managing agents, housing associations, schools, universities, NHS estates and commercial owners.
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Facade investigations in Hampstead
NW3 local facade investigations for property owners and managers.
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View Facade investigations in RichmondRelated fire safety and facade guidance
PAS 9980 and FRAEW explained
How external wall fire risk is appraised, and what the outcome informs.
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How EWS1 relates to flats, mortgages and external walls.
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What clients should expect from fire door surveys and reports.
View Fire door inspectionsBuilding Safety Act guide
A practical guide to the Building Safety Act context.
View Building Safety Act guideCladding Safety Scheme
Application process notes for eligible buildings.
View Cladding Safety SchemeFacade investigation costs
Typical fees, access methods and how the findings feed FRAEW and EWS1.
View Facade investigation costsFacade Works Project Guide
Investigation, access, repair scope and delivery considerations for facade works.
Read the project guideWhat this service is — and is not
A facade investigation is a building fabric diagnostic and advisory service. We diagnose the likely cause of external envelope defects and specify a proportionate remedy; we do not carry out the building works, which are delivered by appointed contractors under a clear specification.
A facade investigation is not a Fire Risk Appraisal of External Walls, an EWS1, or a statutory fire risk assessment. Where fire engineering, a FRAEW to PAS 9980, structural design or specialist testing is required we identify it and coordinate competent specialists rather than implying it is covered; where the frame itself is the concern, our high-rise structural surveys service applies. Our findings reflect the areas inspected and the evidence available within the agreed scope, and where opening-up is limited we say so rather than overstating certainty. We do not guarantee a particular outcome.
A representative facade investigation
The following London inspection and reporting workflow breakdown shows how our RICS surveyors scope, inspect and report on real properties across London; see our published London surveying case studies for completed project records.
- Typical client: a managing agent or freeholder for a residential or mixed-use block
- Typical building: a building with rainscreen, render or curtain walling
- Typical issue: recurring water ingress and uncertainty over the external wall build-up
- Typical instruction: a facade investigation with targeted opening-up
- What the client typically receives: a cause diagnosis, an opening-up plan and remedial specification support
- How it is typically used: to stop wasted remedial spend and inform a defined repair or remediation scope
- Related services: FRAEW / PAS 9980, Cladding Remediation, Building Pathology
What affects the fee?
A facade investigation is scoped to the elevation and the evidence needed, so the fee reflects the access and complexity rather than a fixed rate. The main factors are:
- The height of the building and the access method required
- The complexity of the water ingress, cracking or cladding concern
- Whether intrusive inspection or opening-up is needed
- The external wall or cladding build-up to be investigated
- Whether drone inspection is suitable for inaccessible areas
- Whether specialist testing is required
- The depth of reporting and any remedial recommendations
We confirm a written scope and fee before you instruct, so the cost is clear before any commitment.
External wall investigation for water ingress, cracking and high-level defects
A facade survey London instruction should identify what is failing, where the evidence sits and what level of access or opening-up is justified before repairs are specified.
Our external wall investigation work covers water ingress, cracking, masonry decay, render failure, balcony and parapet defects, cladding condition, fixings, sealants and high-level defects. Where safe close access is not proportionate at the first visit, drone roof and facade inspection can provide the evidence map before targeted access is arranged.
This is a building fabric investigation, not a FRAEW or an EWS1. Where the question is fire risk appraisal, lender sign-off or combustible external wall risk, we route the matter to FRAEW / PAS 9980, EWS1 advice or cladding remediation. Where visible movement is the driver, we link it to visual structural appraisal.
Not sure which assessment your building needs? Send the building information and we'll identify the right next step.
Send building informationFacade Investigations London FAQs
What is a facade investigation?
A facade investigation is a structured technical assessment of the external envelope of a building: the external walls, cladding, rainscreen, render, masonry, curtain walling, sealants, balconies and weathering details. It moves a client from a symptom such as water ingress, cracking or panel movement to an evidence-led understanding of the cause and the remedial options.
When is a facade investigation needed?
Typically when there is water ingress, cracking, render or panel failure, movement, corrosion concerns, or where the condition of the external wall is unknown ahead of refurbishment, acquisition or remediation. It is also used to provide the building fabric evidence that other assessments and works rely on.
Can facade investigations be intrusive?
Yes, where needed. Many defects can be assessed visually and with close inspection, but hidden construction, cavities, fixings and build-ups often require targeted opening-up. We scope opening-up proportionately so it answers the diagnostic question without unnecessary cost or damage.
Do you investigate facade water ingress?
Yes. Water ingress through facades, roofs, parapets, balconies, windows and external wall interfaces is a core part of this service. The aim is to find the actual entry point and mechanism so the remedy addresses the cause rather than the symptom.
Is a facade investigation the same as a FRAEW or EWS1?
No. A facade investigation is a building fabric and defect assessment. A FRAEW under PAS 9980 is a specific fire risk appraisal of external walls, and EWS1 is the lender-facing form that can communicate such an assessment. A facade investigation can inform those processes, but it is not a substitute for them, and we identify where that specialist input is required.
Can this link to cladding remediation?
Yes. Facade investigations often provide the condition evidence, material identification and defect mapping that a cladding remediation strategy is built on, and we can take a matter through to remedial specification and contract support where instructed.
Do you inspect commercial and high-rise facades?
Yes. We support residential blocks, mixed-use and commercial buildings, schools, universities and healthcare estates. Access for taller buildings is planned using the appropriate method for the building and the investigation.
What access methods do you use?
Access is matched to the building and the question: close visual inspection, ladders, mobile platforms, rope access or scaffold, and drone or pole camera where appropriate. The method and any opening-up are agreed before work starts so cost and disruption are controlled.
What do you provide at the end?
A clear diagnosis of the likely cause, an investigation and opening-up plan where needed, and remedial specification support so the findings translate into a defined repair or remediation scope and a tender if required. Reporting is written for owners, agents and project teams.
Do you guarantee the building is safe?
No. A facade investigation reports on the condition and likely causes of defects in the external envelope within the agreed scope and the areas inspected. It is not a guarantee that the building is safe or defect-free, and where a fire risk appraisal or other specialist assessment is required we identify that clearly.
Related case study
Anonymised, completed instruction showing how we deliver this service in practice.
Photographs from our survey records
Selected building details from HCS photographic records. These images illustrate the fabric under discussion; a photograph alone is not a diagnosis or a specification for repairs.
Need a facade investigation for a London building? Call 020 7101 4590.
Enquire about Facade Investigations
Tell us briefly about the building and what you need. Your enquiry goes directly to our chartered surveying team.
We respond to enquiries within one working day.
Prefer to talk it through first? Call 020 7101 4590 or email enquiries@hampsteadcharteredsurveyors.co.uk.
Facade investigations in Central London
Regional guidance for Central London building stock, client decisions and delivery constraints.
Facade investigations in Central London
A Central London facade investigation builds an evidence trail from records, close visual inspection and, where justified, targeted opening-up or testing. It is designed to explain a defined defect, material uncertainty or performance concern rather than infer concealed construction from street-level appearance alone.
View Facade investigations Central London guidanceDedicated Central London service guides
Compare 59 dedicated service guides and 16 core neighbourhoods.
View the Central London hubFacade Investigations & External Wall Surveys London: Deliverables & Transparent Fee Matrix
Every facade investigations & external wall surveys london instruction is confirmed by a fixed written fee proposal once the property address, tenure and scope are reviewed. Starting fees begin from £1,350 plus VAT; all fee guides below are exclusive of VAT (plus VAT).
| Scope / Property Band | Deliverables & Technical Scope | Typical Turnaround | Transparent Fee Guide (Excl. VAT) |
|---|---|---|---|
| Band A — Standard / Single-Property Facade Investigations & External Wall Surveys London | Pre-instruction document review, targeted site inspection or desktop appraisal, and structured RICS-aligned report. | 3–5 working days from inspection | From £1,350 plus VAT (visual & borescope masonry, stucco, terracotta or curtain-wall investigation) |
| Band B — Comprehensive Facade Investigations & External Wall Surveys London Instruction | Full site inspection, photographic defect/evidence schedule, regulatory analysis and prioritised cost/action plan. | 5–8 working days from site access | From £2,450 plus VAT (intrusive opening-up, wall-tie/fixings check & water-ingress diagnosis) |
| Band C — Complex, Heritage or Multi-Unit Facade Investigations & External Wall Surveys London | Listed-building, higher-risk, multi-unit or portfolio instruction with senior director review and adviser coordination. | 7–12 working days (or agreed milestone) | From £4,250 plus VAT (multi-elevation high-rise facade engineering appraisal & remedial specification) |