Flackwell Builders are specialist in SIPs extension systems. These Structural Insulated Panels enable us to build extensions, porches and garden rooms or offices very quickly, especially when compared to traditional building methods.

An average single story extension can be completed in as little as 2 to 3 weeks.

We use special foundation systems that allow us to start erecting the structure of the extension on the second day of the project. We’re normally water tight the following day, and then the finishing can begin.

The systems we use generate much less waste and the site is kept much cleaner than a tradition build.

Get in touch today to see how we can help with your project. We offer design and build solutions with full project management or build only if you have already selected an architect.

Planning permission and building regulations may apply to your project, Flackwell Builders are happy to help with this and can prepare drawings and planning submissions.