Tag Archives: garden room budget

By Garden Office Buildings

Garden Room Extension Cost: What to Budget For

Garden Office AdviceBy Garden Office Buildings 11 March 2026

A garden room extension in the UK typically costs between £20,000 and £50,000 in 2026, depending on the size, specification, and what is included in the quote. For a fully insulated, year-round building with electrics and internal finishing, expect to pay £1,500 to £2,200 per square metre. That puts a 12 sqm garden room at…

Garden Room Cost Guide 2026: What You’ll Really Pay

Garden Office AdviceBy Garden Office Buildings 9 March 2026

After building over 1,000 garden rooms across South East London, Kent, Surrey, and Sussex since 2004, we know the question everyone asks first: how much does a garden room cost? The honest answer is that it depends on size, specification, and how much your supplier includes in their quoted price. This guide gives you the…