CIAT Affiliate.
Highgate (Haringey) is Georgian and Victorian villages. The streetscape is dominated by georgian villas, victorian terraces, which means design decisions — roofscape, rear glazing, side returns, mansards — must respect the period rhythm of the row. Haringey planning (Haringey Council) decides applications here. Borough-wide Article 4 for HMO conversions.
Planning permission drawings delivered by a CIAT-affiliated team.
Building regulations drawings delivered by a CIAT-affiliated team.
Loft conversion drawings delivered by a CIAT-affiliated team.
House extension drawings delivered by a CIAT-affiliated team.
Mansard roof extensions delivered by a CIAT-affiliated team.
Garage conversion drawings delivered by a CIAT-affiliated team.
Basement conversion drawings delivered by a CIAT-affiliated team.
Structural calculations delivered by a CIAT-affiliated team.
Measured building survey delivered by a CIAT-affiliated team.
Party wall services delivered by a CIAT-affiliated team.
Rear dormer drawings delivered by a CIAT-affiliated team.


Highgate (Haringey) sits within Haringey, so applications are decided by Haringey Council. Most single-storey rear extensions and side-returns on terraced or semi-detached homes in Highgate (Haringey) fall under Permitted Development — up to 3m deep (attached) or 4m (detached), under 4m high. Flats, listed buildings and conservation areas always require full planning. Article 4 status here: Yes. We check eligibility at the site visit.
Highgate (Haringey) is characterised by Georgian and Victorian villages. The dominant stock is Georgian villas, Victorian terraces. We've drawn extensions and lofts for every period represented here — Victorian rear additions, Edwardian side returns, 1930s wrap-arounds, and contemporary infill where the streetscape allows.
Haringey Council statutory determination is 8 weeks for householder applications. Validation typically adds 1–2 weeks. From your first call to a decision, expect 12–14 weeks total: 1 week measured survey, 2 weeks design, 1–2 weeks validation, 8 weeks determination. We've achieved a across Haringey.
Construction cost (separate from drawings) is £45,000–£75,000 for a standard rear dormer on a Victorian or Edwardian terrace, £65,000–£95,000 for a hip-to-gable plus dormer.
Haringey has 29 designated conservation areas. Nearest to Highgate (Haringey): Highgate Village. In a conservation area, full planning is required for most external work (including roof additions, rendering, replacement windows). We prepare a Heritage Statement covering the conservation area's character appraisal.

Every Highgate (Haringey) postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. Highgate (Haringey) fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| N6 | Highgate | Georgian villas, Victorian terraces | Highgate is split at N6. Either Camden Council or Haringey Council can determine a drawing package here, so the N6 address is checked against both policies maps first. |
| N8 | Crouch End | Edwardian terraces, Victorian villas | Neighbouring Crouch End, where drawing package work is handled by the same Haringey Council case officers. |
| N10 | Muswell Hill (Haringey) | Edwardian villas, 1930s semi-detached | Neighbouring Muswell Hill (Haringey), where drawing package work is handled by the same Haringey Council case officers. |
| N4 | Harringay | Victorian terraces (Harringay Ladder) | Neighbouring Harringay, where drawing package work is handled by the same Haringey Council case officers. |
| N15 | Tottenham | Victorian terraces, post-war estates | Neighbouring Tottenham, where drawing package work is handled by the same Haringey Council case officers. |
| N4 | Stroud Green | Victorian terraces | Neighbouring Stroud Green, where drawing package work is handled by the same Haringey Council case officers. |
| N8 | Hornsey | Edwardian terraces, Victorian villas | Neighbouring Hornsey, where drawing package work is handled by the same Haringey Council case officers. |
| N22 | Wood Green | Edwardian terraces, post-war flats | Neighbouring Wood Green, where drawing package 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 drawing package can achieve at that address.
How designation changes a Highgate (Haringey) drawing package: Haringey Council maintains 29 conservation areas, including Tottenham Green, Bruce Castle, Highgate Village. Inside any of them a Highgate (Haringey) drawing package 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 Highgate (Haringey) casework.
Article 4 and your Highgate (Haringey) drawing package: Borough-wide Article 4 for HMO conversions. At a N6 address that matters twice over, because Haringey Council applies the direction unevenly across Highgate (Haringey) — we read the Highgate (Haringey) policies map for the exact N6 address before quoting architectural drawings.
Highgate (Haringey) housing stock: 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. Read that before choosing a drawing package route in Highgate (Haringey) — construction, not postcode, sets what is achievable. Haringey Council charges £548 for a householder application and has 8 weeks to determine it.
Sources for this Highgate (Haringey) drawing package 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.
CIAT Affiliate.
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