Basement Conversion Drawings in Haringey

Which postcode districts around Haringey do we cover for basement conversion work?

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

How does a basement conversion differ street by street across Haringey?

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

• Hornsey (N8) — basement conversion work in Hornsey means edwardian terraces, victorian villas. Hornsey is Edwardian terraces, Victorian villas. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged throughout N8. Haringey Council decides the Hornsey application, and Hornsey High Street anchors the Hornsey location plan.
• Wood Green (N22) — basement conversion work in Wood Green means edwardian terraces, post-war flats. Wood Green is Edwardian terraces, post-war flats. Edwardian houses rarely have a usable cellar throughout N22. Haringey Council decides the Wood Green application, and The Mall Wood Green anchors the Wood Green location plan.
• Crouch End (N8) — Edwardian terraces, village character defines Crouch End, where edwardian terraces, victorian villas set what a basement conversion can do. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged across N8. Any Crouch End basement conversion is validated by Haringey Council, with Crouch End Broadway the usual Crouch End reference point on the site plan.
• Muswell Hill (Haringey) (N10) — a basement conversion in Muswell Hill (Haringey) starts from edwardian villas, 1930s semi-detached, and Muswell Hill (Haringey) reads as Edwardian villas and terraces. Edwardian houses rarely have a usable cellar in N10. Haringey Council assesses Muswell Hill (Haringey) basement conversions against its own Muswell Hill (Haringey) character guidance, and the location plan we draw for Muswell Hill (Haringey) references Muswell Hill Broadway.
• Highgate (Haringey) (N6) — a basement conversion in Highgate (Haringey) starts from georgian villas, victorian terraces, and Highgate (Haringey) reads as Georgian and Victorian villages. Georgian houses here already have a vault and a lower-ground floor in N6. Haringey Council assesses Highgate (Haringey) basement conversions against its own Highgate (Haringey) character guidance, and the location plan we draw for Highgate (Haringey) references Highgate Wood.
• Harringay (N4, N8) — Victorian terraced Ladder defines Harringay, where victorian terraces (harringay ladder) set what a basement conversion can do. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged across N4. Any Harringay basement conversion is validated by Haringey Council, with Green Lanes the usual Harringay reference point on the site plan.
• Tottenham (N15, N17) — basement conversion work in Tottenham means victorian terraces, post-war estates. Tottenham is Victorian terraces, post-war estates. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged throughout N15. Haringey Council decides the Tottenham application, and Tottenham Hotspur Stadium anchors the Tottenham location plan.

How do conservation areas and Article 4 affect a basement conversion in Haringey?

How designation changes a Haringey basement conversion: Haringey Council maintains 29 conservation areas, including Highgate Village, Muswell Hill, Crouch End. Inside any of them a Haringey basement conversion 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. Tottenham Green sets the tone for Haringey casework.

Haringey and Article 4: Borough-wide Article 4 for HMO conversions. A basement conversion planned at a N4 address is checked against that direction first; Haringey Council publishes the Haringey extent, and the N4 line rarely follows the Haringey boundary you would expect.

The building fabric around Haringey: 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. A basement conversion in Haringey is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Haringey Council.

Which neighbouring authorities border Haringey?

• Hackney — cross the Haringey boundary and Hackney Council takes the basement conversion instead, applying 29 conservation areas of its own around E2. We re-price basement conversions at the Haringey edge because Hackney policy and Haringey policy rarely align on basement conversion depth.
• Islington — the Islington boundary runs against Haringey, so a basement conversion a street from Haringey is decided by Islington Council instead. Islington runs 40 conservation areas across N1 and its neighbours, which is why basement conversions priced for Haringey are re-checked against Islington policy whenever the Haringey address sits on that edge.
• Camden — the Camden boundary runs against Haringey, so a basement conversion a street from Haringey is decided by Camden Council instead. Camden runs 40 conservation areas across NW1 and its neighbours, which is why basement conversions priced for Haringey are re-checked against Camden policy whenever the Haringey address sits on that edge.
• Barnet — cross the Haringey boundary and Barnet Council takes the basement conversion instead, applying 20 conservation areas of its own around N2. We re-price basement conversions at the Haringey edge because Barnet policy and Haringey policy rarely align on basement conversion depth.

Sources for this Haringey basement conversion 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.