London Builders guideshttps://londonbuilders.co.uk/guides/Guides to extensions, lofts and structural work in Londonen-gbBuilding costs and house prices in Enfieldhttps://londonbuilders.co.uk/guides/building-costs-house-prices-enfield/https://londonbuilders.co.uk/guides/building-costs-house-prices-enfield/Sat, 24 Oct 2026 09:00:00 +0000Enfield house prices rose 0.8% to £474,855 in August 2026 as London fell. Moving vs extending, DMD rear and side limits, Green Belt, 22 conservation areas and Article 4s.Building costs and house prices in Ealinghttps://londonbuilders.co.uk/guides/building-costs-house-prices-ealing/https://londonbuilders.co.uk/guides/building-costs-house-prices-ealing/Fri, 23 Oct 2026 09:00:00 +0000Ealing house prices rose 1.8% to £589,875 in August 2026 as London fell. Moving vs extending, Ealing’s 3.5m rear guide, 30 conservation areas, Article 4s and HMO rules.Building costs and house prices in Croydonhttps://londonbuilders.co.uk/guides/building-costs-house-prices-croydon/https://londonbuilders.co.uk/guides/building-costs-house-prices-croydon/Thu, 22 Oct 2026 09:00:00 +0000Croydon house prices by property type from the UK HPI, published extension and loft costs, and the conservation area, Article 4 and Local Plan points to check before you build.Building costs and house prices in City of Londonhttps://londonbuilders.co.uk/guides/building-costs-house-prices-city-of-london/https://londonbuilders.co.uk/guides/building-costs-house-prices-city-of-london/Wed, 21 Oct 2026 09:00:00 +0000City of London flat prices from the UK HPI, published refurbishment costs, and the lease, listed building, Barbican, Golden Lane and building safety rules to check before you change your flat.Building costs and house prices in Camdenhttps://londonbuilders.co.uk/guides/building-costs-house-prices-camden/https://londonbuilders.co.uk/guides/building-costs-house-prices-camden/Tue, 20 Oct 2026 09:00:00 +0000Camden house prices by property type from the UK HPI, published extension, mansard and basement costs, and the flat, conservation area, Article 4 and basement rules to check before you build.Building costs and house prices in Bromleyhttps://londonbuilders.co.uk/guides/building-costs-house-prices-bromley/https://londonbuilders.co.uk/guides/building-costs-house-prices-bromley/Mon, 19 Oct 2026 09:00:00 +0000Bromley house prices by property type from the UK HPI, published extension and loft costs, and the side space, Green Belt, conservation area and Article 4 rules to check before you build.Building costs and house prices in Brenthttps://londonbuilders.co.uk/guides/building-costs-house-prices-brent/https://londonbuilders.co.uk/guides/building-costs-house-prices-brent/Sun, 18 Oct 2026 09:00:00 +0000Brent house prices by property type against the London average, published extension, loft and basement costs, and Brent’s extension guidance, conservation area and Article 4 rules to check before you build.Building costs and house prices in Bexleyhttps://londonbuilders.co.uk/guides/building-costs-house-prices-bexley/https://londonbuilders.co.uk/guides/building-costs-house-prices-bexley/Sat, 17 Oct 2026 09:00:00 +0000Bexley house prices by property type from the UK HPI, published extension, loft and garage conversion costs, and the conservation area and Article 4 rules to check before you build.Building costs and house prices in Barnethttps://londonbuilders.co.uk/guides/building-costs-house-prices-barnet/https://londonbuilders.co.uk/guides/building-costs-house-prices-barnet/Fri, 16 Oct 2026 09:00:00 +0000Barnet house prices by property type from the UK HPI, published extension and loft costs, and the conservation area and Hampstead Garden Suburb rules to check before you build.Do you need planning permission for a house extension?https://londonbuilders.co.uk/guides/extension-planning-permission/https://londonbuilders.co.uk/guides/extension-planning-permission/Thu, 15 Oct 2026 09:00:00 +0000A plain-English walk through permitted development for extensions in England, and when you need a full application.Building costs and house prices in Barking and Dagenhamhttps://londonbuilders.co.uk/guides/building-costs-house-prices-barking-and-dagenham/https://londonbuilders.co.uk/guides/building-costs-house-prices-barking-and-dagenham/Thu, 15 Oct 2026 09:00:00 +0000What affects building costs in Barking and Dagenham, local house price data from official sources, and the planning points to check before you build.Loft conversions: planning, building regulations and party wallshttps://londonbuilders.co.uk/guides/loft-conversion-rules/https://londonbuilders.co.uk/guides/loft-conversion-rules/Wed, 14 Oct 2026 09:00:00 +0000What permitted development allows for a loft, why building regulations always apply, and when to serve party wall notices.How to plan a budget for building work (without guessing)https://londonbuilders.co.uk/guides/budgeting-building-work/https://londonbuilders.co.uk/guides/budgeting-building-work/Tue, 13 Oct 2026 09:00:00 +0000Why we don't publish price lists, and the steps that get you a reliable figure for an extension or loft.Party walls: a short guide for London homeownershttps://londonbuilders.co.uk/guides/party-wall-basics/https://londonbuilders.co.uk/guides/party-wall-basics/Mon, 12 Oct 2026 09:00:00 +0000When the Party Wall etc. Act 1996 applies to your extension or loft, and the notice periods set out in GOV.UK guidance.