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Why was EWS introduced?

After the Grenfell Tower fire in June 2017 there was a focus on removing aluminium composite material (ACM) from buildings over 18 metres. Over time, focus broadened to take in other types of combustible cladding. In December 2018 the Government issued Advice Note 14 containing guidance for building owners on the steps to take to tackle non-ACM materials on the external walls of high-rise buildings. Owners were advised to check “general fire precautions” and ensure that external wall systems were “safe”.  This can require an intrusive inspection by a qualified individual to check the materials used and how they were installed.  

In 2019 mortgage providers began to require assurances about the safety of external wall systems as a condition of approving mortgage applications. There was concern that flats in high-rise blocks wouldn’t represent good security and that owners could be liable for remediation costs. In some cases, surveyors acting for lenders took the view that flats in blocks without a certificate showing compliance with Advice Note 14 had a value of £0, or significantly less than the asking price. An increasing number of mortgage applications were rejectedsales started to fall through.  

In response, the Royal Institution of Chartered Surveyors (RICS) led a cross-industry working group to consider best practice in the reporting and valuation of tall buildings within the secured lending arena with a view to agreeing a new standardised process 

The EWS1 process was agreed by the industry in December 2019 – it is described as an industry-wide valuation process which will help people buy and sell homes and re-mortgage in buildings above 18 metres (six storeys). 

What is the EWS process?

After its introduction, flat owners seeking to sell or re-mortgage their homes found that lenders asked for an EWS1 form (PDF 884 KB)EWS1 forms are not a statutory requirementLenders may refuse a mortgage application where one cannot be produced – this is a commercial decision. 

The EWS process involves a fire safety assessment by a suitably qualified professional who completes the EWS1 form. Full information is on the RICS website. 

EWS1 forms are valid for five years. Where buildings are altered a new form may be needed.   

Ongoing issues and action to address them

Although the EWS process was devised as an industry solution to ‘unstick’ the market for flats in high-rise blocks, its implementation brought other problems to the fore.  On 21 November the Government announced changes would be made to the application of the EWS process to help long leaseholders (see below) 

 1. Which blocks need an EWS1 form 

RICS’ guidance says the process applies to residential buildings in scope above 18m in height. Not all high-rise blocks need an EWS1 form “only those with some form of combustible cladding or combustible material on balconies.”  RICS advises that some lower buildings may be in scope if there are specific concerns about combustible materials/balconies which represent “a clear and obvious danger to life safety”. 

Flat-owners report lenders asking for EWS1 forms on blocks under 18 metres. This issue arose after publication of consolidated Government guidance in January 2020: Advice for Building Owners of Multi-storey, Multi-occupied Residential Buildings (PDF 394 KB) which says “The need to assess and manage the risk of external fire spread applies to buildings of any height. 

On 21 November an agreement between RICS, UK Finance, the Building Societies Association and Government was announced such that an EWS1 form will no longer be needed for sales or re-mortgages on flats in blocks with no cladding. The Government said that this would clear the way “for up to nearly 450,000 flat owners to sell, move or remortgage their homes. Supplementary guidance on fire risk assessments was issued on 21 November.  

On 8 January 2021 RICS launched a consultation exercise on guidance intended “to help by providing valuers with clear criteria to help them decide on whether an EWS1 form may be required or not: 

The guidance proposes criteria defining the buildings in which it is less likely that expensive remediation work affecting value will be required. This would allow valuers to make a reasonable assumption about valuing properties in these buildings without requesting an EWS1 form from the building owners.  

Submissions are accepted up to 25 January. It is expected new guidance will be published in February 2021. 

2. Shortage of experts  

There is a lack of qualified professionals to carry out assessments and complete EWS1 forms.  The 21 November announcement included Government funding of almost £700,000 “to train more assessors, speeding up the valuation process for homeowners in cases where an EWS1 form is required. The training will be delivered by RICS from January 2021 and is expected to train 2,000 additional assessors within six months.  

The Government is alsopressing lenders to accept other forms of evidence on building safety to support their valuations. The EWS1 process should only be used where there is clear need, and where no reasonable assurances or regulatory evidence exists to support valuations.” 

3. Professional Indemnity (PI) insurance

In response to reports of the insurance industry being reluctant to offer PI insurance to professionals completing EWS1 forms, the Government said they are: 

exploring ways to address ongoing concerns around the availability of professional indemnity insurance and welcomes industry’s progress on developing a portal where lenders, valuers and leaseholders will be able to find out if their building already has an existing EWS1, thereby reducing the demand for duplicate forms. 

4. What happens after the EWS1 is completed?

There are five possible results from an EWS assessmentCategory A applies where buildings have external wall materials that are unlikely to be combustibleRICS states that A1 and A2 findings “are not likely to lead to any further action.” An A3 finding means that remedial work may be needed on attachments to the external wall, such as balconiesCategory B applies where combustible materials are clearly present. A B1 rating means the engineer has decided that the fire risk is low, and no remedial work is required. B2 finding means that there isn’t an adequate standard of fire safety and remedial work/interim measures are required.  

Calls for reform

In June 2020 the Housing, Communities and Local Government Select Committee (PDF 454 KB) called on the Government to “take full control” and put a fairer and faster process in place: 

Reforms could include a relaxation of the rules on who is able to undertake these surveys, clarification of which buildings should fall within scope and more guidance to ensure the correct prioritisation of buildings. The Government should provide necessary funding to ensure that all affected buildings are surveyed within the next 12 months, so residents are not forced to wait years before they are able to sell their properties or obtain new mortgages. 

The Government responded in September 2020 (PDF 1.32 MB). The developments announced on 21 November 2020 go some way towards addressing the Committee’s concerns. The Government acknowledged there was more to do.  

Further information


The Commons Library does not intend the information in this article to address the specific circumstances of any particular individual. We have published it to support the work of MPs. You should not rely upon it as legal or professional advice, or as a substitute for it. We do not accept any liability whatsoever for any errors, omissions or misstatements contained herein. You should consult a suitably qualified professional if you require specific advice or information. Read our briefing for information about sources of legal advice and help.

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  • This paper considers the debate about who is responsible for paying for fire safety works on blocks of flats in the wake of the Grenfell Tower fire. It covers progress in implementing the Government decision to fund remediation work for affected blocks with ACM cladding in the social and private sectors. In March 2020, a £1 billion Building Safety Fund was announced to fund the removal of unsafe non-ACM cladding on high-rise blocks in the social and private sectors. Ongoing issues include the adequacy of the funding available and how historic defects, such as a lack of fire stopping measures, will be paid for.