Two Victorian terraced houses on a London street, one painted white and one in yellow stock brick, with bay windows
Floor plan drawings, pencil sketches of a house, a scale rule and a protractor spread across a desk
Photo: Tima Miroshnichenko / Pexels

Loft conversion drawings · London Borough of Haringey

Loft conversion drawings in Haringey, £795 fixed

Haringey's South Tottenham SPD sorts loft work into three types: a full-width rear dormer no higher than the ridge, a whole new floor behind a parapet, or a second floor with loft above, which it calls the maximum. Front dormers are not acceptable, and elsewhere in the borough only rear dormers and rooflights are.

Planning drawings£795
Building regs£695
Lawfulnessfrom £545 drawings + £150 survey (£695 total)
Council fee£548
Get your fixed feeFFP-01 · Rev A
Our fixed fee£795
Council fee, paid to your council£548
Our fee + council fee£1,343
CoverageAll 33 boroughs

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Plus the Planning Portal's own charge if the application goes through the Portal: up to £149 including VAT, depending on the application type, and some types have none (source).

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Starts at£150
Boroughs33/33
Stages5

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Dormer loft conversions clad in dark tiles on the backs of yellow-brick London terraced houses at sunset
A dormer loft conversion on a London terrace. Photo: Daniel Sikpi / Pexels.

What Haringey Council asks of a loft conversion

From the council's House Extensions in South Tottenham SPD (First Revision), sections 2.1 to 2.19 (adopted 15 October 2013 (Cabinet approval), council page).

  • Type 1 is a full-width dormer to the rear only, no higher than the level of the existing ridge, with rooflights to the front only. Flush front rooflights in the plane of the roof are acceptable, but any window or structure projecting from the front roof slope, such as a dormer, is not. (source, checked 25 October 2026)
  • Where a house has too little room to reach the required floor-to-ceiling heights, Type 1 is not acceptable and householders should consider Type 2 or Type 3, or alternatives to extension. (source, checked 25 October 2026)
  • Type 2 removes the roof slope and adds a whole floor with a flat roof behind a parapet wall in matching construction; the extension must include a parapet with a cornice, the new storey must match the design of the existing house, and houses with large second-floor gabled roofs are not suitable. (source, checked 25 October 2026)
  • Type 3 is a full second-floor extension with loft accommodation possible within a pitched roof above, in matching materials. The SPD calls it the maximum permissible extension in South Tottenham, notes that building it on pairs of houses together shares the structural cost, and says plans must be discussed with a structural engineer, architect or building surveyor. (source, checked 25 October 2026)
  • Elsewhere in the borough, smaller loft conversions with only rooflights or rear dormer windows are the only sort of extension into the roof the SPD says would be acceptable. (source, checked 25 October 2026)

What Haringey loft conversion drawings have to show

The drawings begin by naming the type. A Type 1 rear dormer shows the dormer rising no higher than the existing ridge, with a front elevation that has only flush rooflights and a section proving the finished floor-to-ceiling heights, since the SPD rules Type 1 out where the height is not there. A Type 2 scheme shows the new parapet and cornice and the matching brickwork and window heads on the front elevation, and the neighbouring roofs it will stand beside.

A Type 3 extension is mainly a structural and fire-safety design, so the set includes the party-wall strengthening, the new means of escape and the sections the Building Regulations need. Outside the South Tottenham boundary, the SPD's wider position is that only a rear dormer or rooflights are acceptable, and the drawings keep to that. Haringey wants a scale bar and one significant dimension on every proposed plan and elevation.

The national permitted development volume limits (40 cubic metres on a terrace, 50 on a semi-detached or detached house: GPDO 2015, Schedule 2, Part 1, Class B) and the fire escape rules for a new second floor are the same in every borough. They are set out with diagrams on our loft conversion drawings page.

PS2 · at a glance

Haringey: 689 householder decisions

Haringey
Approvals, prior approvals included90.3%

622 of 689 granted. London: 85.8%.

Decided within 8 weeks90.4%

369 of 408 applications, prior approvals excluded.

Source: MHCLG PS2, 1 July 2025 to 30 June 2026. Dark tick: London.
A finished loft room with a sloping ceiling, two roof windows and a light wood floor
A finished loft room: the headroom, the roof windows and the stair opening are all set out on the drawings. Photo: Liam Gillan / Pexels.

What it costs in Haringey

  • Planning drawings: £795, plus £548 to Haringey Council.
  • Certificate of lawfulness where the loft is permitted development: from £545 drawings + £150 survey (£695 total), plus £274 to the council.
  • Building regulations drawings: £695.

Loft conversion drawings across London · Haringey planning rules · every price

Answers

Haringey loft conversion questions

Can I have a front dormer in Haringey?
No. The South Tottenham SPD says flush rooflights on the front roof slope are acceptable, but any window or structure projecting from the front roof slope, such as a dormer, is not. It also says the only roof extension acceptable elsewhere in the borough is a smaller conversion with rooflights or rear dormer windows.
What are the Type 1, Type 2 and Type 3 loft extensions in Haringey?
Type 1 is a full-width rear dormer no higher than the ridge. Type 2 replaces the roof slope with a whole extra floor under a flat roof behind a parapet with a cornice. Type 3 is a full second floor with a pitched loft above and is the maximum permitted. Type 3 needs a structural engineer, and building pairs of houses together shares the structural cost.
Does the Haringey South Tottenham SPD cover my street?
Only the area inside the boundary map on page 28 of the SPD, the south-eastern corner of the borough with its late Victorian and Edwardian terraces. Send us your address and we check the boundary and whether the council still applies the 2013 document before drawing to it, because outside it a rear dormer or rooflights are the usual limit.

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Measured surveyWithin five working days
£150
02
Existing drawingsThe building as it stands
£175
03
Proposed drawingsYour scheme, revised until right
£225
04
Planning application packForms, statements, OS plans
£125
05
Submission and agent servicePortal submission, queries handled
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Total, planning application£795
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