Key Facts: House Extension Costs in London (2026) An architect-designed house extension in London costs between £3,000 and £5,000+ per square metre in 2026, depending on specification and borough. For a typical single-storey rear extension of 20 to 30 m², expect a total project cost of £80,000 to £150,000 including construction, fit-out, professional fees, and…
Category Archives: Conservation Areas
There’s a certain allure in restoring historic homes, bridging the past’s grandeur with today’s innovative designs. As architects, we’re entrusted with preserving the narrative of these structures while infusing them with modern life. This delicate dance of the old with the new presents both unique challenges and remarkable triumphs. The Beauty and Complexity of Working…


