Fixed fee from £1,575. MCIAT chartered. Hammersmith and Fulham planning experienced. 1 postcode covered: W6.
Hammersmith is Victorian terraces, riverside character. The dominant stock — victorian terraces, mansion blocks — has specific constraints and opportunities for mansard roof extensions. Side returns sit better on bay-fronted Victorian terraces than on detached 1930s semis. Mansards work where the existing roofscape supports them. We design to the block, not the brochure.
Local context summary — Architectural Drawings London, MCIAT charteredMost mansard roof extensions projects in Hammersmith fall under Permitted Development if the property is a house (not a flat), not listed, and not in a conservation area. Hammersmith and Fulham has an Article 4 Direction — Article 4 removes PD for HMO conversions; restrictions on ground-floor shop-to-residential in certain streets. We confirm eligibility free at the site survey.
Drawings: fixed fee from £1,575 (Mansard Roof Extensions). Construction cost is separate and depends on size, finish and structural complexity. For victorian terraces, mansion blocks (typical of Hammersmith), expect £45,000–£85,000 build cost for a standard rear extension or loft, more for mansards or basements.
12–14 weeks from first call to Hammersmith & Fulham Council planning decision. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination.
Hammersmith is characterised by victorian terraces, mansion blocks. We've delivered mansard roof extensions for every period represented here — the design choices vary significantly by stock.
Our first-time approval rate in Hammersmith and Fulham is 98%. Pre-application advice from Hammersmith & Fulham Council is built into our process when the case is borderline (conservation area, Article 4, listed).
Same-day fixed quote. MCIAT chartered.
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