Dormer, hip-to-gable and mansard loft conversion drawings for Haringey homes — prepared to Haringey Council's design guidance, delivered in days and revised free until your decision lands, with a free approval-odds score first.
Haringey Council granted 88% of the householder planning decisions it made in its latest published year — 1 point above the 87% England-wide householder average. Side-return and rear extensions are weighed against the tight party-wall relationships of the Ladder terraces, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901) and Edwardian (1901–1910) housing stock sets the design brief on most streets.
The permitted-development ceilings are fixed: 40m³ of new roof volume for a terraced loft and 50m³ for a semi or detached house under Class B, plus a 3m single-storey rear extension on a terrace or 4m on a detached house under Class A. Haringey carries at least one Article 4 direction, and conservation areas including Highgate, Crouch End and Muswell Hill remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Haringey is determined against an 8-week statutory target.
Highgate (historic village streets shared with Camden and tightly controlled), Crouch End (Victorian and Edwardian terraces around the Broadway), Muswell Hill (Edwardian houses with pronounced gables), Harringay (the Victorian Ladder of parallel terraced streets), Tottenham (Victorian terraces and the Tottenham Green conservation area) and Wood Green (mixed Victorian terraces and converted flats) — these are the Haringey pockets our drawings cover most. Heritage designations here include Highgate, Crouch End, Muswell Hill, Tottenham Green and Noel Park. Haringey Council weighs each proposal against Haringey Local Plan and the borough's Alterations and Extensions SPD, where the borough's HMO Article 4 now pulls many conversions into the full planning system. Converted flats are common across Harringay, Wood Green and Tottenham, and flats hold no householder permitted-development rights.. On roofs the borough is London butterfly / valley roofs on the Victorian terraces and gabled and hipped roofs on the Edwardian houses, over Victorian and Edwardian terraces, large Edwardian houses in Muswell Hill and converted period flats.
Haringey's roofs set the brief. The borough is built largely from Victorian and Edwardian terraces, large Edwardian houses in Muswell Hill and converted period flats, and its lofts sit under London butterfly / valley roofs on the Victorian terraces and gabled and hipped roofs on the Edwardian houses — the geometry that decides whether a rear dormer, a hip-to-gable or a mansard gives you the headroom you want. Haringey Council assesses loft proposals against Haringey Local Plan and the borough's Alterations and Extensions SPD, and its case officers read each roof against the pair next door and the wider street before they read the plans.
That makes drawing quality decisive. We measure ridge and eaves heights, roof pitch and the existing stair, calculate the added volume against the permitted-development limits exactly, and show the workings on the drawings so Haringey Council can verify them. Side-return and rear extensions are weighed against the tight party-wall relationships of the Ladder terraces, so we resolve it on the page rather than leave it for the case officer to raise.
Haringey also carries protected streets — Highgate, Crouch End, Muswell Hill, Tottenham Green and Noel Park among them. Haringey applies Article 4 directions in areas such as Noel Park and runs a borough-wide direction that removes permitted-development rights for small houses in multiple occupation. We check your address against those designations before a line is drawn.
Many Haringey loft conversions proceed without planning permission — a rear dormer within the permitted-development volume limits (40 cubic metres on a terrace, 50 on a semi or detached house) is usually lawful. You will normally need a full application to Haringey Council if any of these apply:
We draw the roof line, the ridge height and the neighbour's daylight on the page — the relationships Haringey Council's officers check first — and submit a validation-complete pack, whether that is a lawful development certificate or a full householder application.
Below is Haringey Council's real householder decision record, pulled from official planning statistics and updated as new data lands. Haringey approves a clear majority of householder applications, with terrace party-wall relationships and the HMO Article 4 the most frequent sticking points. Professionally prepared loft drawings anticipate those pressure points before submission, which is why complete, policy-literate packs are decided faster and refused less often than DIY applications.
Source: MHCLG planning application statistics (householder decisions, rolling year). Compare every borough on our London approval-rate league table.
Tell us about your project and get a fixed, no-obligation quote back within one working day. If you don't need planning permission at all, we'll tell you that too — for free.
Across Highgate, Crouch End and Muswell Hill, the recurring loft is the rear dormer — a box across the back roof slope that turns a cramped attic into a full-height double bedroom and en-suite. On London butterfly / valley roofs on the Victorian terraces, that is usually the most efficient use of the roof; where the stock is gabled and hipped roofs on the Edwardian houses, a hip-to-gable followed by a rear dormer unlocks far more space, though it needs a full application.
The borough's HMO Article 4 now pulls many conversions into the full planning system. We draw the dormer inside the volume allowance, keep the flat-roof build-up below the ridge, and set the face back from the eaves as the rules require — so the pack answers Haringey Council's questions before they are asked. Where permitted-development rights are exhausted or removed, we prepare a householder application composed to the borough's roof-alteration guidance instead.
We draw loft conversions on every street in the borough. A few of the neighbourhoods where Haringey roofs come up most often:
Loft conversion drawings for Highgate's historic village streets shared with Camden and tightly controlled — measured, volume-checked and drawn to Haringey Council's guidance.
Loft conversion drawings for Crouch End's Victorian and Edwardian terraces around the Broadway — measured, volume-checked and drawn to Haringey Council's guidance.
Loft conversion drawings for Muswell Hill's Edwardian houses with pronounced gables — measured, volume-checked and drawn to Haringey Council's guidance.
Loft conversion drawings for Harringay's the Victorian Ladder of parallel terraced streets — measured, volume-checked and drawn to Haringey Council's guidance.
Loft conversion drawings for Tottenham's Victorian terraces and the Tottenham Green conservation area — measured, volume-checked and drawn to Haringey Council's guidance.
Loft conversion drawings for Wood Green's mixed Victorian terraces and converted flats — measured, volume-checked and drawn to Haringey Council's guidance.
The right loft in Haringey depends on your roof. This is how the main types compare on planning route and the space they add.
| Loft type | Permitted development? | Space & headroom | What Haringey Council checks |
|---|---|---|---|
| Rear dormer | Usually yes, within volume limits | Full-height double room at the back | Volume, set-back from eaves, ridge height |
| Hip-to-gable | No — full application | Extends the whole side of the roof | Roof bulk and the symmetry of the pair |
| Mansard | No — full application | Maximum floor area across the roof | Street character, especially in conservation areas |
| Rooflights only | Usually yes (Class C) | Light and headroom, no extra footprint | Whether rooflights sit within the existing slope |
Route depends on your street — conservation areas such as Highgate and Crouch End and Article 4 directions can remove permitted-development rights.
A fixed process built around how Haringey Council validates and decides householder loft applications — most drawings are submission-ready within seven days of survey.
Tell us your Haringey postcode and roof type. We confirm your conservation and Article 4 status, how much permitted-development volume you have left, and score your odds against live Haringey Council decisions.
We measure ridge and eaves heights, roof pitch, joist levels and the existing stair — the numbers the volume calculation and head heights depend on.
Chartered designers develop the dormer, hip-to-gable or mansard to your brief, drawn inside the Class B limits or to Haringey Council's roof-alteration guidance.
We submit the certificate or application, manage validation and case-officer queries, and revise the drawings free until Haringey Council issues its decision.
Often not. A rear dormer within 40 cubic metres on a terrace, or 50 on a semi-detached or detached house, set back from the eaves and no higher than the ridge, is usually permitted development. In Haringey the main exceptions are hip-to-gable conversions, dormers visible from the highway, and homes in conservation areas such as Highgate and Crouch End or on streets with an Article 4 direction. Haringey Council is the decision-maker.
Generally no. In conservation areas including Highgate and Crouch End, Class B permitted-development rights for lofts are removed, so a rear dormer that would be lawful elsewhere needs a full application to Haringey Council. Haringey applies Article 4 directions in areas such as Noel Park and runs a borough-wide direction that removes permitted-development rights for small houses in multiple occupation. We check your exact address before drawing.
On London butterfly / valley roofs on the Victorian terraces, common across Haringey, a rear dormer is usually the most efficient conversion and often permitted development. Where the roof is gabled and hipped roofs on the Edwardian houses, a hip-to-gable followed by a rear dormer gains far more usable space but needs planning permission. Our survey confirms which your roof supports before we draw. Haringey Council is the decision-maker.
A householder planning application in Haringey runs to a statutory eight-week target, and a lawful development certificate to eight weeks as well, though validation can add time if the pack is incomplete. We submit validation-complete drawings and manage case-officer queries to keep the decision on track. Haringey Council is the decision-maker.
If your dormer is permitted development, a lawful development certificate from Haringey Council is council-stamped proof of that — worth having, because every buyer's solicitor will ask for it when you sell. We prepare and submit the certificate application with the same drawing pack.
Every roof is different, so we quote each Haringey project individually — a fixed, no-obligation price back within one working day. The quote covers the full drawing pack with free revisions until Haringey Council approves, and we tell you upfront whether your loft qualifies as permitted development. Call 020 7864 7245 to start.
Answer five quick questions and get a free planning score for your exact address — instantly. Then, if you want the full picture, unlock the detailed analysis: your council's live approval rates, local precedents, constraints on your street and a step-by-step route to permission.
Same fixed quotes, same fast drawings — wherever your project is.