House Extension Drawings in Haringey

Where in Haringey does a house extension actually get determined?

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

What changes about a house extension in each part of Haringey?

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

• Highgate (Haringey) (N6) — Georgian and Victorian villages defines Highgate (Haringey), where georgian villas, victorian terraces set what a house extension can do. Georgian rear elevations here are usually the listed or locally listed face of the building across N6. Any Highgate (Haringey) house extension is validated by Haringey Council, with Highgate Wood the usual Highgate (Haringey) reference point on the site plan.
• Harringay (N4, N8) — house extension work in Harringay means victorian terraces (harringay ladder). Harringay is Victorian terraced Ladder. 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 N4. Haringey Council decides the Harringay application, and Green Lanes anchors the Harringay location plan.
• Tottenham (N15, N17) — house extension work in Tottenham means victorian terraces, post-war estates. Tottenham is 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 throughout N15. Haringey Council decides the Tottenham application, and Tottenham Hotspur Stadium anchors the Tottenham location plan.
• Stroud Green (N4) — house extension work in Stroud Green means victorian terraces. Stroud Green is Victorian 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 N4. Haringey Council decides the Stroud Green application, and Stroud Green Road anchors the Stroud Green location plan.
• Hornsey (N8) — Edwardian terraces, Victorian villas defines Hornsey, where edwardian terraces, victorian villas 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 N8. Any Hornsey house extension is validated by Haringey Council, with Hornsey High Street the usual Hornsey reference point on the site plan.
• Wood Green (N22) — a house extension in Wood Green starts from edwardian terraces, post-war flats, and Wood Green reads as Edwardian terraces, post-war flats. Edwardian plots here are wider in N22. Haringey Council assesses Wood Green house extensions against its own Wood Green character guidance, and the location plan we draw for Wood Green references The Mall Wood Green.
• Crouch End (N8) — Edwardian terraces, village character defines Crouch End, where edwardian terraces, victorian villas 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 N8. Any Crouch End house extension is validated by Haringey Council, with Crouch End Broadway the usual Crouch End reference point on the site plan.

Does Haringey planning policy restrict a house extension?

Haringey conservation designations: there are 29 across Haringey Council, Bruce Castle, Highgate Village, Muswell Hill among them. Designation costs a Haringey owner the permitted-development route: a house extension then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Muswell Hill is the Haringey designation that most often changes a house extension design.

What Article 4 removes near Haringey: Borough-wide Article 4 for HMO conversions. Before pricing a house extension we check whether the N4 address is inside the mapped area, because Haringey Council draws the Haringey boundary street by street rather than across the whole of Haringey.

What Haringey is built from: Edwardian terraces in Crouch End, Muswell Hill; Victorian two-up-two-downs in Harringay Ladder; 1930s semi-detached in Muswell Hill; post-war in Tottenham. Muswell Hill and Crouch End have strong conservation coverage with clear loft/mansard precedents; Tottenham generally permissive. That mix decides the house extension route in Haringey more than the postcode does, and it is what a Haringey Council case officer reads first. A householder application costs £548 paid to Haringey Council direct, with 8 weeks to a decision once validated.

Which neighbouring authorities border Haringey?

• Barnet — adjoining Haringey, with 20 conservation areas centred on N2. A house extension on the far side of the Haringey line is determined by Barnet Council, so the Haringey quote for house extensions is checked against Barnet guidance before it is issued.
• Enfield — the Enfield boundary runs against Haringey, so a house extension a street from Haringey is decided by Enfield Council instead. Enfield runs 22 conservation areas across EN1 and its neighbours, which is why house extensions priced for Haringey are re-checked against Enfield policy whenever the Haringey address sits on that edge.
• Waltham Forest — adjoining Haringey, with 17 conservation areas centred on E4. A house extension on the far side of the Haringey line is determined by Waltham Forest Council, so the Haringey quote for house extensions is checked against Waltham Forest guidance before it is issued.
• Hackney — adjoining Haringey, with 29 conservation areas centred on E2. A house extension on the far side of the Haringey line is determined by Hackney Council, so the Haringey quote for house extensions is checked against Hackney guidance before it is issued.

Sources for this Haringey 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.