The External Wall System Review form (EWS1) is not a statutory requirement or government process. It is an industry tool to inform mortgage valuation. The Royal Institution of Chartered Surveyors (RICS) have issued guidance on the use and application of EWS1 forms. Following the Department’s work in this area, a number of mortgage lenders have joined a voluntary commitment to offer mortgages on properties affected by building safety issues. This means that around three quarters of mortgage lending is now covered by this commitment, which commits lenders to consider mortgage applications for properties in buildings that are yet to be remediated, or where leaseholders are protected from remediation costs.