House Extensions in Camden Town

Which Camden Town postcodes does this house extension service cover?

Every Camden Town postcode district we draw in, the stock that dominates it and the authority that validates a house extension there. Camden Town fees below are the statutory England rates for 2026, not house extension estimates.

How does a house extension differ street by street across Camden Town?

Roof pitch, wall build-up and plot depth change every few Camden Town streets, and each one changes what a house extension can achieve at that address.

• Camden Town (NW1) — dense mixed-use, Victorian terraces, canal-side defines Camden Town, where victorian terraces, mansion blocks set what a house extension can do. The side-return infill is the classic move on these Victorian terraces — 3 across NW1. Any Camden Town house extension is validated by Camden Council, with Camden Market the usual Camden Town reference point on the site plan.
• Near Camden Town: Primrose Hill (NW1) — a house extension in Primrose Hill starts from victorian and edwardian terraces, and Primrose Hill reads as boutique village atmosphere, painted terraces. The side-return infill is the classic move on these Victorian terraces — 3 in NW1. Camden Council assesses Primrose Hill house extensions against its own Primrose Hill character guidance, and the location plan we draw for Primrose Hill references Primrose Hill park.
• Near Camden Town: Kentish Town (NW5) — house extension work in Kentish Town means victorian terraces. Kentish Town is Victorian terraced streets, gentrifying. The side-return infill is the classic move on these Victorian terraces — 3 throughout NW5. Camden Council decides the Kentish Town application, and Kentish Town City Farm anchors the Kentish Town location plan.
• Near Camden Town: Belsize Park (NW3) — a house extension in Belsize Park starts from edwardian mansion blocks, victorian villas, and Belsize Park reads as tree-lined avenues, Edwardian mansion blocks. The side-return infill is the classic move on these Victorian terraces — 3 in NW3. Camden Council assesses Belsize Park house extensions against its own Belsize Park character guidance, and the location plan we draw for Belsize Park references Belsize Park station.
• Near Camden Town: Bloomsbury (WC1) — house extension work in Bloomsbury means georgian terraces, listed buildings. Bloomsbury is Georgian squares, academic. Georgian rear elevations here are usually the listed or locally listed face of throughout WC1. Camden Council decides the Bloomsbury application, and British Museum anchors the Bloomsbury location plan.
• Near Camden Town: Fitzrovia (W1T) — a house extension in Fitzrovia starts from georgian terraces, victorian mansion blocks, and Fitzrovia reads as Georgian and Victorian mix, creative quarter. Georgian rear elevations here are usually the listed or locally listed face of in W1T. Camden Council assesses Fitzrovia house extensions against its own Fitzrovia character guidance, and the location plan we draw for Fitzrovia references Fitzroy Square.
• Near Camden Town: King's Cross (N1C) — a house extension in King's Cross starts from modern apartments, converted warehouses, and King's Cross reads as regenerated quarter, contemporary new-build. Modern housing here is frequently covered by a planning condition removing permitted development in N1C. Camden Council assesses King's Cross house extensions against its own King's Cross character guidance, and the location plan we draw for King's Cross references King's Cross Station.

How do conservation areas and Article 4 affect a house extension in Camden Town?

How designation changes a Camden Town house extension: Camden Council maintains 40 conservation areas, including Fitzrovia, Hampstead, Primrose Hill. Inside any of them a Camden Town house extension cannot rely on permitted development, and the route becomes a £258 householder application determined in 8 weeks rather than a £120 prior approval in 6 weeks. Hampstead sets the tone for Camden Town casework.

Camden Town and Article 4: Article 4 removes permitted development for HMO conversions (C3 to C4) across the borough, plus restrictions on basement extensions in 12 conservation areas. A house extension planned at a NW1 address is checked against that direction first; Camden Council publishes the Camden Town extent, and the NW1 line rarely follows the Camden Town boundary you would expect.

Camden Town below-ground policy: Camden's basement policy (Policy A5) restricts single-storey basements to 50% of garden area; double-storey basements generally refused outside commercial zones. Any house extension in Camden Town that goes below existing foundations triggers two months notice under section 6 of the Party Wall etc. Act 1996, and Camden Council will want the NW1 ground and groundwater position set out.

What Camden Town is built from: Victorian and Edwardian terraces, Georgian townhouses in Bloomsbury and Hampstead, post-war mansion blocks, modern developments in King's Cross. Creative, affluent in Hampstead and Primrose Hill; dense mixed-use around Camden Town and Kings Cross; academic character in Bloomsbury. That mix decides the house extension route in Camden Town more than the postcode does. Our fixed fee for house extensions in Camden Town starts at £1,225, against £1,750 for the Complete package that carries a Camden Town scheme through Camden Council planning and building regulations together.

Who decides a house extension on the edge of Camden Town?

• Barnet — the Barnet boundary runs against Camden, so a house extension a street from Camden Town is decided by Barnet Council instead. Barnet runs 20 conservation areas across N2 and its neighbours, which is why house extensions priced for Camden Town are re-checked against Barnet policy whenever the Camden Town address sits on that edge.
• Haringey — the Haringey boundary runs against Camden, so a house extension a street from Camden Town is decided by Haringey Council instead. Haringey runs 29 conservation areas across N4 and its neighbours, which is why house extensions priced for Camden Town are re-checked against Haringey policy whenever the Camden Town address sits on that edge.
• Brent — adjoining Camden Town, with 22 conservation areas centred on NW2. A house extension on the far side of the Camden Town line is determined by Brent Council, so the Camden Town quote for house extensions is checked against Brent guidance before it is issued.
• City of London — cross the Camden Town boundary and City of London Corporation takes the house extension instead, applying 27 conservation areas of its own around EC1. We re-price house extensions at the Camden Town edge because City of London policy and Camden policy rarely align on house extension depth.

Sources for this Camden Town house extension page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.