If you need significant additional space and want the best possible return on your investment, a double storey extension is hard to beat. You’re effectively adding two rooms — one above the other — for relatively little extra cost compared to a single storey extension, making the cost per square metre significantly lower.

At Lancashire Window, we design and build double storey extensions that look like they’ve always been part of your home. Our architects ensure the design complements your existing property inside and out, and our experienced construction team delivers a quality build that will last a lifetime. We manage everything from planning to completion across Burnley, Blackburn, and the whole of Lancashire.