Which postcode districts around Islington do we cover for kitchen extension work?
Every Islington postcode district we draw in, the stock that dominates
it and the authority that validates a kitchen extension there. Islington fees below are the
statutory England rates for 2026, not kitchen extension estimates.
| Postcode | Area | Dominant stock | What it means for a kitchen extension |
|---|
| N4 | Finsbury Park / Stroud Green | Victorian terraces, post-war estates | A kitchen extension in Finsbury Park / Stroud Green may land with Haringey Council or Islington Council or Hackney Council — N4 crosses the boundary, and the N4 policies map decides it street by street. |
| N16 | Stoke Newington / Stamford Hill | Georgian and Victorian terraces | Stoke Newington / Stamford Hill is split at N16. Either Hackney Council or Islington Council can determine a kitchen extension here, so the N16 address is checked against both policies maps first. |
| WC1X | Bloomsbury / Mount Pleasant | Georgian and early Victorian terraces | Bloomsbury / Mount Pleasant is split at WC1X. Either Camden Council or Islington Council can determine a kitchen extension here, so the WC1X address is checked against both policies maps first. |
| N1 | Islington / Hoxton | Georgian and early Victorian terraces | A kitchen extension in Islington / Hoxton may land with Islington Council or Hackney Council — N1 crosses the boundary, and the N1 policies map decides it street by street. |
| N5 | Highbury | Victorian terraces, mansion blocks | A kitchen extension at an N5 address in Highbury is determined by Islington Council under its own Local Plan policies for Highbury. |
| N7 | Holloway / Tufnell Park | Victorian villas and terraces | A kitchen extension at an N7 address in Holloway / Tufnell Park is determined by Islington Council under its own Local Plan policies for Holloway / Tufnell Park. |
| N19 | Archway / Tufnell Park | Victorian terraces, post-war flats | N19 straddles a boundary: Archway / Tufnell Park addresses fall to Islington Council or Camden Council, so confirm which authority validates the kitchen extension before submitting N19 drawings. |
| EC1M | Clerkenwell | Georgian and early Victorian terraces | Clerkenwell sits wholly inside EC1M, so Islington Council validates every kitchen extension submitted from an EC1M address. |
What changes about a kitchen extension in each part of Islington?
Roof pitch, wall build-up and plot depth change every few Islington
streets, and each one changes what a kitchen extension can achieve at that address.
- Clerkenwell (EC1) — a kitchen extension in Clerkenwell starts from warehouse conversions, georgian fragments, and Clerkenwell reads as converted industrial buildings, creative offices. Georgian rear elevations here are usually the listed or locally listed face of the building in EC1. Islington Council assesses Clerkenwell kitchen extensions against its own Clerkenwell character guidance, and the location plan we draw for Clerkenwell references Exmouth Market.
- Finsbury Park (N4) — kitchen extension work in Finsbury Park means victorian terraces, post-war estates. Finsbury Park is Victorian terraces, mixed. 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. Islington Council decides the Finsbury Park application, and Finsbury Park anchors the Finsbury Park location plan.
- Archway (N19) — Victorian terraces on the hill defines Archway, where victorian terraces, post-war flats set what a kitchen 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 N19. Any Archway kitchen extension is validated by Islington Council, with Whittington Hospital the usual Archway reference point on the site plan.
- Tufnell Park (N7, N19) — kitchen extension work in Tufnell Park means victorian villas and terraces. Tufnell Park is Victorian villas and 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 N7. Islington Council decides the Tufnell Park application, and Tufnell Park station anchors the Tufnell Park location plan.
- Holloway (N7) — kitchen extension work in Holloway means victorian terraces, post-war estates. Holloway 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 N7. Islington Council decides the Holloway application, and Holloway Road anchors the Holloway location plan.
- Newington Green (N16) — kitchen extension work in Newington Green means georgian and victorian terraces. Newington Green is Georgian fragments, Victorian terraces. Georgian rear elevations here are usually the listed or locally listed face of the building throughout N16. Islington Council decides the Newington Green application, and Newington Green anchors the Newington Green location plan.
- Angel (N1, EC1V) — kitchen extension work in Angel means georgian and early victorian terraces. Angel is Georgian terraces, dense town centre. Georgian rear elevations here are usually the listed or locally listed face of the building throughout N1. Islington Council decides the Angel application, and Angel station anchors the Angel location plan.
How do conservation areas and Article 4 affect a kitchen extension in Islington?
How designation changes a Islington kitchen extension: Islington Council maintains 40 conservation areas, including Clerkenwell, Angel, Barnsbury. Inside any of them a Islington kitchen 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. Clerkenwell sets the tone for Islington casework.
Article 4 and your Islington kitchen extension: Article 4 Direction covering the whole borough removes permitted development rights for HMO conversions (C3 to C4). Separate Article 4 for office-to-residential in key areas. At a N1 address that matters twice over, because Islington Council applies the direction unevenly across Islington — we read the Islington policies map for the exact N1 address before quoting kitchen extensions.
What Islington is built from: Georgian and early Victorian terraces, Victorian bye-law housing, 1930s mansion blocks, converted industrial buildings in Clerkenwell and Farringdon. Densely terraced, gentrified; strong conservation area coverage; active planning department. That mix decides the kitchen extension route in Islington more than the postcode does.
Who decides a kitchen extension on the edge of Islington?
- Camden — cross the Islington boundary and Camden Council takes the kitchen extension instead, applying 40 conservation areas of its own around NW1. We re-price kitchen extensions at the Islington edge because Camden policy and Islington policy rarely align on kitchen extension depth.
- Hackney — cross the Islington boundary and Hackney Council takes the kitchen extension instead, applying 29 conservation areas of its own around E2. We re-price kitchen extensions at the Islington edge because Hackney policy and Islington policy rarely align on kitchen extension depth.
- Haringey — adjoining Islington, with 29 conservation areas centred on N4. A kitchen extension on the far side of the Islington line is determined by Haringey Council, so the Islington quote for kitchen extensions is checked against Haringey guidance before it is issued.
- City of London — cross the Islington boundary and City of London Corporation takes the kitchen extension instead, applying 27 conservation areas of its own around EC1. We re-price kitchen extensions at the Islington edge because City of London policy and Islington policy rarely align on kitchen extension depth.
Sources for this Islington kitchen 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.
