What certificates should you keep after replacing windows under building regulations?

Certificates are not vanity

Window replacements are regulated where they are a controlled fitting. Buyers want to know work complied and who takes responsibility.

Typical evidence

FENSA certificate or other competent scheme evidence where used.

Building control completion when the full route applied.

Planning where relevant in conservation areas or listed settings.

Upload PDFs with install dates to your Property Passport so Stakeholders do not need to chase.

Using Property Passport UK

Start from the address on [Property Search](/search). When you own or manage the home, [claim your Property Passport](/claim/start) and upload Documents with clear dates and sources. Browse more explainers in the [Property Guides library](/guides). This article is general information, not legal, tax, mortgage, or survey advice.