How to obtain a duplicate FENSA certificate

If you are buying or selling a property that has had replacement windows or doors installed since July 2002, you will need to provide the seller or purchaser with a FENSA certificate.

Not having this important document can hold up the sale of the property, so do please make sure that if you have had (or are planning to have) any replacement windows or doors installed in your home that you receive a FENSA certificate within a couple of months after the work is carried out, if not, check online at that your double glazing installer did register the work they carried out on your property with FENSA.

FENSA advise that the quickest way you can both apply for, and obtain a replacement or duplicate FENSA certificate for windows and doors installed in your home after July 2002 is via their website.

Simply visit “” which brings up a window asking for your property’s postcode. Put in your postcode, and, as long as your double glazing installer registered your installation at the time they carried our the work, this should bring up your address, the work that was undertaken (i.e. number of windows & doors) and FENSA ID number.

Simply then fill in the details and pay £25 by credit card or debit card. FENSA will then send you a replacement certificate in about 7-10 days. Having contacted FENSA, their representative recommends that re-ordering a FENSA certificate online is often much much quicker and less expensive than asking your Solicitor to do this for you as Solicitors a) tend to send a cheque by post which needs to clear before certificate is sent out, plus b) will probably charge you for the privilege!

Double glazing manufacturers and installers do not issue FENSA certificates, so as a consequence do not have copies of them as these are issued directly by FENSA to each retail windows & doors customer. You can contact FENSA “direct” on 020 7645 3700.

Alternatively you can write to FENSA with a cheque and all the necessary details at 40 Rushworth Street, London SE1 0RB. You can check that Hazlemere Window Company Ltd are members of FENSA by going onto the FENSA website, which will confirm that Bucks based Hazlemere Windows and Doors registration number as 10589. Hazlemere Windows, Doors & Conservatories are also members of the Glass and Glazing Fenestration, are Which? Trusted Traders and members of the National Federation of Glaziers.


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