EWS1 Survey Cost

How Much Does an EWS1 Survey Cost?

A full EWS1 assessment can cost several thousand pounds, rising to £20,000–£35,000+ for larger or more complex buildings. It’s not simply a form — the cost covers establishing the wall construction, gathering the evidence required by the fire engineer, carrying out intrusive opening-up and completing the final certification.

With us, these elements are combined into a single EWS1 project, from investigation through to assessment and certification.

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What Makes Up the Cost of an EWS1?

There are two main areas of cost: the professional assessment and the physical investigation.

Fire Engineer

The fire engineer is responsible for assessing the external wall construction and the associated fire risk based on the available information and evidence obtained from the investigation.

The professional fee reflects the expertise and professional responsibility involved, as well as the cost of maintaining appropriate professional indemnity insurance for this type of work.

External wall and cladding work became a particularly difficult area of the professional indemnity market following the Grenfell Tower fire. Restrictions and exclusions introduced by insurers made appropriate cover more difficult and expensive for some professionals undertaking this type of work — this is one of the factors reflected in the professional fee for an EWS1 assessment.

Every EWS1 survey is assessed and signed off by fully accredited professionals, including Chartered Fire Engineers (IFE, CEng) and Chartered Surveyors (RICS, CABE, CIOB), with full professional indemnity cover. Assessments are delivered in line with RICS, UK Finance, and PAS 9980:2022 standards, providing compliant, recognised and defensible reporting.

Opening-Up Works

The fire engineer determines the investigation required to establish the external wall construction. Where physical evidence is required, sections of the wall are opened up and inspected. This involves examining:

  • Cladding
  • Insulation
  • Sheathing
  • Cavities
  • Cavity barriers and fire stopping
  • Membranes
  • Fixings and support systems

The opening-up works require contractors, access equipment and reinstatement, all of which form part of the physical investigation.

What Determines the Price?

Building Height

Taller buildings generally cost more to survey because access becomes harder and slower at height, and there’s simply more external wall to consider across additional storeys. A 4-storey block can often be inspected from a tower or short-reach MEWP in a day, while an 18-storey tower may need multiple scaffold lifts or rope access teams working over several days.

External Wall Construction

The type of cladding, insulation and wall build-up determines how much investigation is needed to confirm it. Simple brick or render is usually quick to assess, while ACM, MCM, HPL or complex rainscreen systems with multiple layers require closer inspection, and sometimes material sampling, to establish exactly what’s been used and how it performs.

Number of Elevations

Buildings with multiple wings, courtyards or differing façade treatments effectively multiply the survey. Each distinct elevation or building form may need its own set of investigation points, so an L-shaped or campus-style building costs more to assess than a single rectangular block of the same height.

Opening-Up Locations

The number and complexity of investigation points has a direct effect on the physical survey cost. This is largely driven by how many distinct wall constructions and cladding types the building has, how much the elevations vary from one another, and whether balconies or other separate build-ups are present. Key junctions — cavity barriers, compartment lines, and window or door reveals — usually need checking regardless of wall type, though good existing drawings or product certificates can reduce the number of physical points required.

Access

How investigators reach each opening-up point has a major bearing on cost. Ground-floor or low-level points may need nothing more than a ladder, while upper floors typically require MEWPs, scaffold towers or rope access, often alongside banksmen and site permits — all of which add to the project cost on top of the investigation itself.

Existing Information

Good-quality drawings, specifications, product certificates or previous surveys can let the fire engineer confirm parts of the construction without opening up the wall in that location. Where no reliable records exist, more physical investigation is usually needed to establish what’s actually there, which increases both time and cost.

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Compare Your EWS1 Quotes

EWS1 quotations are not always like-for-like. A low headline fee may cover only the fire engineer’s assessment, with opening-up, access, permits and reinstatement charged separately.

For example, a £6,000 fire engineer fee may not include:

  • £3,000–£8,000 for opening-up works
  • £1,500–£4,000 for access equipment
  • £500–£1,500 for permits
  • £1,000–£2,500 for reinstatement

Potential total project cost: £12,000–£22,000

A £6,000 quotation can therefore end up costing considerably more than a higher quotation that includes the complete EWS1 project.

When comparing EWS1 quotes, check:

  • Opening-up works — included or separate?
  • Access equipment — scaffold, MEWPs or other access?
  • Permits and site coordination — included?
  • Reinstatement — included or charged separately?
  • Project management — who coordinates the different contractors?

The fairest comparison is the total cost of obtaining the completed EWS1 certification, not simply the professional fee shown at the top of the quotation.

Our EWS1 service combines the investigation, opening-up works, access requirements and fire engineer assessment into one coordinated project, giving you a clearer overall cost and a single point of contact.

Who Pays for an EWS1 Survey?

  • Freeholders / building owners are typically responsible for commissioning and initially funding the EWS1 assessment.
  • Leaseholders may see costs passed on via service charges, though the Building Safety Act has restricted what can be recharged for many leaseholders since 2022.
  • Government schemes — such as the Building Safety Fund and Cladding Safety Scheme — can cover costs for eligible buildings, though qualifying and applying takes time.

(This is general information, not legal or financial advice — leaseholders and freeholders with cost disputes should check their specific lease terms and current Building Safety Act protections.)

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