Side-return extension in Colliers Wood

Where in Colliers Wood does a house extensions actually get determined?

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

What changes about a house extensions in each part of Colliers Wood?

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

• Colliers Wood (SW19) — a house extensions in Colliers Wood starts from edwardian terraces, post-war flats, and Colliers Wood reads as Edwardian terraces, post-war flats. Edwardian plots here are wider in SW19. Merton Council assesses Colliers Wood house extensions against its own Colliers Wood character guidance, and the location plan we draw for Colliers Wood references Colliers Wood Tube.
• Near Colliers Wood: Wimbledon (SW19, SW20) — house extensions work in Wimbledon means victorian villas, edwardian terraces. Wimbledon is Victorian villas, Edwardian terraces. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage throughout SW19. Merton Council decides the Wimbledon application, and All England Club anchors the Wimbledon location plan.
• Near Colliers Wood: Wimbledon Village (SW19) — Georgian and Victorian village conservation defines Wimbledon Village, where georgian and victorian villas set what a house extensions can do. Georgian rear elevations here are usually the listed or locally listed face of the building across SW19. Any Wimbledon Village house extensions is validated by Merton Council, with Wimbledon Village High Street the usual Wimbledon Village reference point on the site plan.
• Near Colliers Wood: Raynes Park (SW20) — house extensions work in Raynes Park means 1930s semi-detached, edwardian terraces. Raynes Park is 1930s semi-detached, Edwardian terraces. Edwardian plots here are wider throughout SW20. Merton Council decides the Raynes Park application, and Raynes Park station anchors the Raynes Park location plan.
• Near Colliers Wood: Morden (SM4) — house extensions work in Morden means 1930s semi-detached, post-war flats. Morden is 1930s semi-detached, post-war flats. 1930s semis here have the deepest rear gardens in the area throughout SM4. Merton Council decides the Morden application, and Morden Tube anchors the Morden location plan.
• Near Colliers Wood: Mitcham (CR4) — a house extensions in Mitcham starts from 1930s semi-detached, post-war estates, and Mitcham reads as 1930s semi-detached, post-war estates. 1930s semis here have the deepest rear gardens in the area in CR4. Merton Council assesses Mitcham house extensions against its own Mitcham character guidance, and the location plan we draw for Mitcham references Mitcham Cricket Green.
• Near Colliers Wood: South Wimbledon (SW19) — Edwardian terraces defines South Wimbledon, where edwardian terraces set what a house extensions can do. Edwardian plots here are wider across SW19. Any South Wimbledon house extensions is validated by Merton Council, with South Wimbledon Tube the usual South Wimbledon reference point on the site plan.

What local planning policy applies to a house extensions in Colliers Wood?

Colliers Wood conservation designations: there are 28 across Merton Council, Mitcham Cricket Green, Wimbledon Common, Wimbledon Village among them. Designation costs a Colliers Wood owner the permitted-development route: a house extensions then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Mitcham Cricket Green is the Colliers Wood designation that most often changes a house extensions design.

Colliers Wood permitted development status: there is no borough-wide direction from Merton Council, so a house extensions at a SW19 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a Colliers Wood sale to argue it later.

The building fabric around Colliers Wood: Victorian villas in Wimbledon; Edwardian terraces in Tooting and Colliers Wood; 1930s semi-detached in Morden and Raynes Park; post-war flats in Mitcham. Wimbledon is heavily conservation-controlled; outer Merton (Morden, Mitcham) is permissive. A house extensions in Colliers Wood is scoped against that stock first.

Who decides a house extensions on the edge of Colliers Wood?

• Kingston upon Thames — cross the Colliers Wood boundary and Kingston Council takes the house extensions instead, applying 22 conservation areas of its own around KT1. We re-price house extensions at the Colliers Wood edge because Kingston upon Thames policy and Merton policy rarely align on house extensions depth.
• Wandsworth — the Wandsworth boundary runs against Merton, so a house extensions a street from Colliers Wood is decided by Wandsworth Council instead. Wandsworth runs 45 conservation areas across SW8 and its neighbours, which is why house extensions priced for Colliers Wood are re-checked against Wandsworth policy whenever the Colliers Wood address sits on that edge.
• Lambeth — the Lambeth boundary runs against Merton, so a house extensions a street from Colliers Wood is decided by Lambeth Council instead. Lambeth runs 64 conservation areas across SE1 and its neighbours, which is why house extensions priced for Colliers Wood are re-checked against Lambeth policy whenever the Colliers Wood address sits on that edge.
• Croydon — cross the Colliers Wood boundary and Croydon Council takes the house extensions instead, applying 24 conservation areas of its own around CR0. We re-price house extensions at the Colliers Wood edge because Croydon policy and Merton policy rarely align on house extensions depth.

Sources for this Colliers Wood house extensions 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.