MCIAT chartered. Haringey planning experienced. 1 postcode covered: N6.
The borough-level guide to planning drawings in Haringey sets out how the same work is handled across the rest of the authority.
Highgate (Haringey) is Georgian and Victorian villages. The dominant stock — georgian villas, victorian terraces — has specific constraints and opportunities for planning permission drawings. Side returns sit better on bay-fronted Victorian terraces than on detached 1930s semis. Mansards work where the existing roofscape supports them. We design to the block, not the brochure.
Local context summary — Architectural Drawings London, MCIAT chartered

Most planning permission drawings projects in Highgate (Haringey) fall under Permitted Development if the property is a house (not a flat), not listed, and not in a conservation area. Haringey has an Article 4 Direction — Borough-wide Article 4 for HMO conversions. We confirm eligibility free at the site survey.
Construction cost is separate and depends on size, finish and structural complexity. For georgian villas, victorian terraces (typical of Highgate (Haringey)), expect £45,000–£85,000 build cost for a standard rear extension or loft, more for mansards or basements.
12–14 weeks from first call to Haringey Council planning decision. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination.
Highgate (Haringey) is characterised by georgian villas, victorian terraces. We've delivered planning permission drawings for every period represented here — the design choices vary significantly by stock.
Our first-time approval rate in Haringey is 98%. Pre-application advice from Haringey Council is built into our process when the case is borderline (conservation area, Article 4, listed).
Extensions on a boundary plot can involve two authorities. Everything we draw and submit is listed for Highgate (Haringey) and Highgate (Haringey).

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Every Highgate (Haringey) postcode district we draw in, the stock that dominates it and the authority that validates a planning drawing set there. Highgate (Haringey) fees below are the statutory England rates for 2026, not planning drawing set estimates.
| Postcode | Area | Dominant stock | What it means for a planning drawing set |
|---|---|---|---|
| N6 | Highgate | Georgian villas, Victorian terraces | Highgate is split at N6. Either Camden Council or Haringey Council can determine a planning drawing set here, so the N6 address is checked against both policies maps first. |
| N8 | Crouch End | Edwardian terraces, Victorian villas | Neighbouring Crouch End, where planning drawing set work is handled by the same Haringey Council case officers. |
| N10 | Muswell Hill (Haringey) | Edwardian villas, 1930s semi-detached | Neighbouring Muswell Hill (Haringey), where planning drawing set work is handled by the same Haringey Council case officers. |
| N4 | Harringay | Victorian terraces (Harringay Ladder) | Neighbouring Harringay, where planning drawing set work is handled by the same Haringey Council case officers. |
| N15 | Tottenham | Victorian terraces, post-war estates | Neighbouring Tottenham, where planning drawing set work is handled by the same Haringey Council case officers. |
| N4 | Stroud Green | Victorian terraces | Neighbouring Stroud Green, where planning drawing set work is handled by the same Haringey Council case officers. |
| N8 | Hornsey | Edwardian terraces, Victorian villas | Neighbouring Hornsey, where planning drawing set work is handled by the same Haringey Council case officers. |
| N22 | Wood Green | Edwardian terraces, post-war flats | Neighbouring Wood Green, where planning drawing set work is handled by the same Haringey Council case officers. |
Roof pitch, wall build-up and plot depth change every few Highgate (Haringey) streets, and each one changes what a planning drawing set can achieve at that address.
How designation changes a Highgate (Haringey) planning drawing set: Haringey Council maintains 29 conservation areas, including Bruce Castle, Highgate Village, Muswell Hill. Inside any of them a Highgate (Haringey) planning drawing set 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. Bruce Castle sets the tone for Highgate (Haringey) casework.
What Article 4 removes near Highgate (Haringey): Borough-wide Article 4 for HMO conversions. Before pricing a planning drawing set we check whether the N6 address is inside the mapped area, because Haringey Council draws the Highgate (Haringey) boundary street by street rather than across the whole of Highgate (Haringey).
What Highgate (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 planning drawing set route in Highgate (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.
Sources for this Highgate (Haringey) planning drawing set 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.
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