Camden / Haringey / Islington
We design rear extensions in Highgate only after naming which borough owns the address — Camden, Haringey or Islington. Village Core, Bowl and falling streets are different design problems. The package is authority-first, then massing, then kitchen layout.
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The short answer
Yes, after the correct borough is named and depth is proven in section against views and neighbours. We prepare the right LPA package and buildable technical drawings.
Planning at a glance
Highgate
| Local planning authority | Camden, Haringey or Islington — confirm from the exact address |
|---|---|
| Postcode district | N6 |
| Likely approval route | Householder planning application or permitted development, depending on conservation status, listing and property type — confirmed for the exact address before drawings begin |
| Statutory determination time | 8 weeks for most householder applications (13 weeks for major applications) |
| Local planning note | Highgate is not one planning designation. The adopted Highgate Neighbourhood Plan covers its mapped Camden and Haringey area only. Camden and Haringey publish separate Highgate conservation records; Islington’s relevant mapped record is CA30 Highgate Hill/Hornsey Lane. Verify the authority, plan boundary, conservation polygon and any Article 4 direction for the property and proposed works. |
| Typical drawing package | £1,450–£1,950 inc. VAT, fixed fee. Find my package → |
Highgate’s first rear-extension question is not kitchen depth — it is which borough owns the address. A wrong authority on the location plan invalidates the package before character is debated.
Village Core, Highgate Bowl and falling streets are different design problems. Rear massing that works on one sub-area can fail on another’s local views. We treat these as separate design briefs sharing an N6 postcode, not as one template.
Steep plots make neighbour daylight a section exercise across valley views, not only a 45-degree plan line on flat land. We survey levels and host fabric before promising a catalogue projection.
Conservation sub-areas and significant local views can control roof form and rear glazing even when the host is not listed. Elevation notes cite the correct grain for the street.
Party walls on tightly set village terraces may sit under different authorities than the application address when neighbours straddle boundaries. We programme multi-borough process packs where that risk appears.
Compared with Hampstead’s mostly-Camden map, Highgate rear work always carries an authority-first checklist before depth is sold. Bowl and valley outlooks mean rear elevations can be “fronts” from lower streets.
Where PD remains on an unrestricted house we prepare LDC-precision drawings; where conservation removes that path we prepare a householder package for the named LPA with complete sections.
Building regulations, structure and party wall awards follow the frozen envelope. Pricing from planning sheets alone is how Highgate programmes stall when steel and multi-flank notices appear late.
Related Highgate routes include house extension architects, Highgate loft conversions, and borough planning hubs once the correct LPA is confirmed.
A useful first pack is the address with any Land Registry plan, rear photos, and a short description of rooms sought. We will not freeze proposed depth until authority and designations are written down for this address.
Delivery sequence: name the LPA → designations and views → levels survey → massing options → PD/LDC or householder package → party wall → building regulations and tender.
Article 4 and conservation controls differ by borough; we never import a Camden-only PD assumption onto a Haringey or Islington Highgate address.
Local analysis
Camden, Haringey and Islington publish different validation lists and conservation appraisals. The first sheet of a Highgate rear package is the location plan with the correct red-line authority.
We confirm the address against title and council mapping before option drawings so you do not pay for the wrong householder form twice.
Falling streets make rear eaves and glazing visible from public realm below. Projection is proven in section against neighbour windows and long views, not as plan-only depth.
Village Core rear gardens are often short; bulk that ignores established lines invites refusal even when kitchen furniture fits.
Tight village plots engage party walls on both flanks. Awards run on statutory clocks outside any LPA determination period.
Building regulations drawings for structure, fire and drainage follow once the envelope is fixed for the named authority.
This page owns rear massing and consent for houses after the correct LPA is named. It is not a Hampstead Camden-only product and not a wraparound dual-boundary product.
Mansard or front roof changes belong on loft pages; freeholder flats need a lease map first.
Thinking about a project in Highgate?
Send the address and a short description. We will confirm the likely approval route and the drawings your project needs.
Local planning
Camden, Haringey or Islington may be the local planning authority for a Highgate address — the title plan and location plan must name the correct LPA before any depth is frozen.
Conservation sub-areas and significant local views differ between Village Core and lower slopes; rear elevations can read as public fronts from valley streets.
Permitted development cannot be imported from a Camden Hampstead assumption onto a Haringey Highgate address without checking Article 4 and conservation coverage for that authority.
Highgate’s seven sub-areas and boundary-first route mean character notes must match the appraisal that actually covers the street, not a generic N6 label.
Materials and glazing on rear elevations should respect roofscape rhythm where the rear is visible across the Bowl or from lower public realm.
For the wider local-authority picture — policies, timescales and application routes — see planning in Camden and planning in Haringey. Confirm the authority for the exact address before relying on either guide.
Services
Extensions & Renovations
Planning & Consents
Technical & Building Regulations
Leasehold & Licence to Alter
Nearby
Send your Highgate address (with any Land Registry plan) and rear photos. We will name the likely LPA and fixed-fee next step.
