What Article 4 restricts in Haringey, how it affects extensions, lofts and HMOs, and how to plan around it.
Yes — Borough-wide Article 4 for HMO conversions.
Article 4 removes specific Permitted Development rights — typically the right to convert a single dwelling (C3) to an HMO (C4), or office (B1) to residential (C3), without full planning permission. The right is removed only where the Direction applies.
Yes. Article 4 in most London boroughs targets HMO conversions and office-to-residential, not householder extensions. Standard rear extensions and loft conversions remain available under Permitted Development unless your property is in a conservation area or is listed.
Check the planning portal at Haringey Council or call us — we look up the Article 4 status for your specific address before quoting.
If Article 4 applies and you build without planning, you face enforcement action: a retrospective application, a stop notice, or in serious cases an enforcement notice requiring reversal. Always check before starting.



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Every Haringey postcode district we draw in, the stock that dominates it and the authority that validates a scheme inside an Article 4 area there. Haringey fees below are the statutory England rates for 2026, not scheme inside an Article 4 area estimates.
| Postcode | Area | Dominant stock | What it means for a scheme inside an Article 4 area |
|---|---|---|---|
| N4 | Finsbury Park / Stroud Green | Victorian terraces, post-war estates | Finsbury Park / Stroud Green is split at N4. Either Haringey Council or Islington Council or Hackney Council can determine a scheme inside an Article 4 area here, so the N4 address is checked against both policies maps first. |
| N8 | Crouch End / Hornsey | Edwardian terraces, Victorian villas | Crouch End / Hornsey sits wholly inside N8, so Haringey Council validates every scheme inside an Article 4 area submitted from an N8 address. |
| N10 | Muswell Hill | Edwardian villas, 1930s semi-detached | Muswell Hill is split at N10. Either Haringey Council or Barnet Council can determine a scheme inside an Article 4 area here, so the N10 address is checked against both policies maps first. |
| N15 | Seven Sisters / South Tottenham | Victorian terraces, post-war estates | Seven Sisters / South Tottenham sits wholly inside N15, so Haringey Council validates every scheme inside an Article 4 area submitted from an N15 address. |
| N17 | Tottenham | Victorian terraces, post-war estates | Tottenham sits wholly inside N17, so Haringey Council validates every scheme inside an Article 4 area submitted from an N17 address. |
| N22 | Wood Green / Alexandra Palace | Edwardian terraces, post-war flats | Wood Green / Alexandra Palace sits wholly inside N22, so Haringey Council validates every scheme inside an Article 4 area submitted from an N22 address. |
| N6 | Highgate | Georgian villas, Victorian and Edwardian semis | N6 straddles a boundary: Highgate addresses fall to Camden Council or Haringey Council, so confirm which authority validates the scheme inside an Article 4 area before submitting N6 drawings. |
Roof pitch, wall build-up and plot depth change every few Haringey streets, and each one changes what a scheme inside an Article 4 area can achieve at that address.
How designation changes a Haringey scheme inside an Article 4 area: Haringey Council maintains 29 conservation areas, including Muswell Hill, Crouch End, Tottenham Green. Inside any of them a Haringey scheme inside an Article 4 area 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. Highgate Village sets the tone for Haringey casework.
Haringey and Article 4: Borough-wide Article 4 for HMO conversions. A scheme inside an Article 4 area 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.
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 scheme inside an Article 4 area route in Haringey more than the postcode does.
Sources for this Haringey scheme inside an Article 4 area 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.

Haringey runs a straightforward borough-wide Article 4 on HMO conversion, and backs it with one of the higher enforcement caseloads in London for a borough of its size.
| Measure | Haringey | Context |
|---|---|---|
| Article 4 areas on the register | 25 | individually mapped areas, live entries only |
| Enforcement notices issued | 141 | 8th highest of 33; London issued 3,554 |
| Planning contravention notices | 193 | formal requests for information about a suspected breach |
| Breach of condition notices | 29 | served over the same three years |
| Temporary stop notices | 2 | served over the same three years |
Sources: MHCLG District Planning Application Statistics (PS1/PS2) and the MHCLG Planning Data Platform registers, covering 2023 Q2 to 2026 Q1. Contains public sector information licensed under the Open Government Licence v3.0.
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