Cost of Conservatory Installation
across the UK

# Conservatory Installation Trade Body Accreditation

The main UK trade bodies and regulatory schemes for conservatory installation include FENSA, which oversees electrical safety and building regulation compliance; the Glass and Glazing Federation (GGF), which sets standards for window and conservatory manufacturers and installers; CERTASS, an alternative building regulation approval body; and schemes like Trustmark and the National Association of Home Builders (NAHB). Many installers also hold memberships with the Federation of Master Builders (FMB) or are registered with local authority building control departments. These bodies exist to ensure that conservatories meet building regulations, particularly regarding thermal performance, structural safety, and electrical installations, and that consumers have recourse if work falls below standard.

To verify a provider's credentials, you should ask for their accreditation numbers or certificates before booking and check them directly on the relevant trade body websites such as FENSA.org.uk or the GGF register. A legitimate installer should be able to provide proof of membership without hesitation and explain which specific standards they comply with. This verification matters because accredited installers have undergone vetting, carry professional indemnity insurance, and are bound by industry codes of conduct. If something goes wrong, you have a formal complaints process and potential compensation route through the trade body rather than relying solely on consumer law. Unaccredited work may also fail future property surveys or mortgage valuations, potentially costing you far more down the line.

Accredited conservatory installers typically charge 10 to 20 percent more than unaccredited alternatives, reflecting the cost of maintaining standards, insurance, regular training, and compliance with regulations. While this premium may seem steep upfront, it usually proves worthwhile because accredited work includes proper building regulation sign-off, warranties backed by professional bodies, and protection against faulty installation that could lead to damp