Luxury house extensions in Hadley Wood

Enfield. Hadley Wood is part of Enfield's Cockfosters ward, even though its EN4 postcode is shared with East Barnet, which Barnet decides. The boundary runs along the western edge: the far end of Camlet Way, towards Hadley Common, is Barnet's. Enfield's latest decisions for the ward are listed on our Cockfosters page. We confirm your specific address at the outset; it determines which council's policies your application is judged against.

Part of it. Enfield's Hadley Wood conservation area is centred on Crescent East, Crescent West and Lancaster Avenue and takes in part of Camlet Way; streets such as Waggon Road and Beech Hill are outside it. Inside, the larger home extension route, side extensions and roof enlargements all need planning permission, and some houses are also covered by a 2006 Article 4 direction on their road-facing elevations. We check your plot against Enfield's maps before design begins.

Plan on £3,500 to £5,500 per square metre, roughly 25 to 30 percent above the North London norm, reflecting the size and specification of these houses. A glazed single-storey rear typically runs £55,000 to £115,000 and double-storey schemes £95,000 to £210,000, excluding VAT and fees. You receive a fixed, itemised quote after a free visit.

Often, if the house is outside the conservation area. A detached house can extend 4m at the rear under permitted development, and up to 8m through larger-home prior approval, which consults the neighbours. Inside the Hadley Wood conservation area the 4m allowance remains but the 8m route does not, and where the Article 4 direction applies, any part of the extension visible from a road or open space needs permission. We would still obtain a Lawful Development Certificate for anything built under PD, so the position is black and white.

Only if your address is on the Barnet side. The Monken Hadley conservation area sits immediately adjacent to the west and takes in the Barnet end of Camlet Way, and Barnet has Article 4 directions there. If you fall within or beside it, design expectations tighten, materials and detailing in particular. We check the conservation maps for your exact plot before design begins.

On these plots, frequently yes. Basements add leisure or guest space without changing how the house presents to the street, which planners here care about. They are full-application projects with serious engineering behind them, and party wall procedures where excavation nears a boundary.

Allow a few weeks for survey and design, around eight weeks for a council decision once submitted, and an on-site period from three or four months for a single-storey scheme to seven for a double-storey rework. We give honest programme dates with the quote.