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THE JOURNAL

Expert guides, renovation advice, cost breakdowns, and trend articles — built from real project experience across London’s most prestigious postcodes.

Luxury rear home extension in Fulham, London — bifold doors open to a landscaped terrace with fire pit seating; open-plan kitchen-living visible inside, by Sovran Group

Cost Guides·12 min read

Home Extension Cost London 2026: What You Will Actually Pay

A comprehensive breakdown of extension costs per square metre across London boroughs, including planning fees, structural work, and finish levels.

4 June 2026

Luxury rear home extension in Hampstead, London — full-width bifold doors open to a landscaped garden with lavender; oak kitchen and marble island visible inside, by Sovran Group

Cost Guides·10 min read

Loft Conversion Cost London 2026: A Homeowner's Real Guide

Real prices for dormer, mansard, Velux and hip-to-gable loft conversions in London — from a RIBA-certified London design and build team.

4 June 2026

Home extension in Holland Park, London — wisteria-clad stucco facade; glazed rear extension opening onto a landscaped garden, by Sovran Group

Planning·8 min read

Planning Permission for a Home Extension in London: The Complete Postcode Guide

Planning permission for a home extension in London varies sharply by postcode. A guide from a team led by former planning officers, with a 95% planning success rate.

6 July 2026

Design and build architectural model and blueprints in a Chelsea, London study, RIBA-certified planning drawings, by Sovran Group

Build Process·9 min read

Design and Build vs Separate Architect and Builder: Which Is Better for Your London Home Extension?

Design and build or a separate architect and builder for your London home extension or loft conversion? A RIBA-certified, 95% planning success rate team explains the trade-offs.

6 July 2026

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