House Extension Drawings in Hackney

Where in Hackney does a house extension actually get determined?

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

How does a house extension differ street by street across Hackney?

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

• London Fields (E8) — Victorian terraces around the park defines London Fields, where victorian terraces set what a house extension can do. 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 across E8. Any London Fields house extension is validated by Hackney Council, with London Fields park the usual London Fields reference point on the site plan.
• Clapton (E5) — a house extension in Clapton starts from victorian terraces, mansion blocks, and Clapton reads as Victorian terraces, Lea valley fringe. 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 in E5. Hackney Council assesses Clapton house extensions against its own Clapton character guidance, and the location plan we draw for Clapton references Lea Bridge.
• Homerton (E9) — a house extension in Homerton starts from victorian terraces, post-war estates, and Homerton reads as Victorian terraces, post-war estates. 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 in E9. Hackney Council assesses Homerton house extensions against its own Homerton character guidance, and the location plan we draw for Homerton references Homerton Hospital.
• Hackney Wick (E9) — a house extension in Hackney Wick starts from warehouse conversions, new-build, and Hackney Wick reads as industrial conversions, Olympic fringe. Modern housing here is frequently covered by a planning condition removing permitted development rights in E9. Hackney Council assesses Hackney Wick house extensions against its own Hackney Wick character guidance, and the location plan we draw for Hackney Wick references Hackney Wick Overground.
• De Beauvoir Town (N1) — house extension work in De Beauvoir Town means georgian villas and terraces. De Beauvoir Town is Georgian and early Victorian conservation area. Georgian rear elevations here are usually the listed or locally listed face of the building throughout N1. Hackney Council decides the De Beauvoir Town application, and De Beauvoir Square anchors the De Beauvoir Town location plan.
• Stamford Hill (N16) — house extension work in Stamford Hill means victorian villas, edwardian terraces. Stamford Hill 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 N16. Hackney Council decides the Stamford Hill application, and Stamford Hill anchors the Stamford Hill location plan.
• Dalston (E8) — Victorian terraces, vibrant high street defines Dalston, where victorian terraces, post-war flats set what a house extension can do. 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 across E8. Any Dalston house extension is validated by Hackney Council, with Ridley Road Market the usual Dalston reference point on the site plan.

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

How designation changes a Hackney house extension: Hackney Council maintains 29 conservation areas, including Hackney Central, Clapton, De Beauvoir Town. Inside any of them a Hackney house extension cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. De Beauvoir Town sets the tone for Hackney casework.

Hackney and Article 4: Article 4 Direction covers HMO conversions borough-wide and office-to-residential in specific commercial zones. A house extension planned at a N16 address is checked against that direction first; Hackney Council publishes the Hackney extent, and the N16 line rarely follows the Hackney boundary you would expect.

Hackney housing stock: Victorian terraces dominate; large post-war estates around Hackney Wick; Georgian fragments in De Beauvoir and Stoke Newington; new-build around the Olympic Park. Young demographic; high design-quality bar in planning; mansards routinely approved in rear-of-terrace positions within conservation areas following the Hackney design guide. Read that before choosing a house extension route in Hackney — construction, not postcode, sets what is achievable. Hackney Council charges £548 for a householder application and has 8 weeks to determine it.

Which neighbouring authorities border Hackney?

• Newham — the Newham boundary runs against Hackney, so a house extension a street from Hackney is decided by Newham Council instead. Newham runs 10 conservation areas across E6 and its neighbours, which is why house extensions priced for Hackney are re-checked against Newham policy whenever the Hackney address sits on that edge.
• Tower Hamlets — cross the Hackney boundary and Tower Hamlets Council takes the house extension instead, applying 58 conservation areas of its own around E1. We re-price house extensions at the Hackney edge because Tower Hamlets policy and Hackney policy rarely align on house extension depth.
• City of London — cross the Hackney 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 Hackney edge because City of London policy and Hackney policy rarely align on house extension depth.
• Islington — cross the Hackney boundary and Islington Council takes the house extension instead, applying 40 conservation areas of its own around N1. We re-price house extensions at the Hackney edge because Islington policy and Hackney policy rarely align on house extension depth.

Sources for this Hackney 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.