Back-of-house extension drawings for Haringey homes — the glazed kitchen-diner across the rear, drawn to Haringey Council's depth and daylight limits, delivered in days and revised free until your decision, with a free approval-odds check 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.
The rear extension is the workhorse of Haringey home improvement — it is how a dark back kitchen becomes an open family room facing the garden. Because the borough is built largely from Victorian and Edwardian terraces, large Edwardian houses in Muswell Hill and converted period flats, most back walls sit close to a neighbour on at least one side, and that proximity, not the design, is what Haringey Council scrutinises. The council reads the proposal against Haringey Local Plan and the borough's Alterations and Extensions SPD, and the first line an officer draws is the 45-degree splay from the neighbour's nearest window.
So the drawings live or die on geometry. We set the depth against the exact permitted-development figure, hold the eaves and the flat-roof or lantern build-up under the 4-metre height ceiling, and show the projection tested against both the 45-degree plan angle and the 25-degree section angle to the neighbouring windows. Side-return and rear extensions are weighed against the tight party-wall relationships of the Ladder terraces, so the rear elevation is composed around it rather than corrected after an objection.
Where the property sits in a conservation area — Highgate, Crouch End, Muswell Hill, Tottenham Green and Noel Park among Haringey's — the larger-home extension route is switched off and even a modest rear addition needs consent. 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 confirm the designation before the survey.
Many single-storey rear extensions in Haringey are permitted development and need no application. You will normally need to apply to Haringey Council, or use the larger-home prior-approval route, if any of these apply:
We draw the depth, the roof build-up and the daylight splays to each neighbour on the page — the tests Haringey Council's officers apply first — and submit a validation-complete pack, whether that is a lawful development certificate, a larger-home prior-approval notice or a full householder application.
Below is Haringey Council's real householder decision record, taken from official planning statistics and refreshed 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. Rear extensions turn most often on neighbour daylight and depth, so a drawing pack that proves those tests upfront is decided faster and refused less often than a DIY submission.
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 approved rear extension is typically a single-storey glazed box within the depth limit, roofed either flat with a lantern or in a shallow mono-pitch, and finished in brick or render to match the host wall. On the borough's victorian and edwardian terraces, keeping the projection to the permitted-development figure often avoids an application entirely; where owners want the full 6 metres, the larger-home route succeeds when the neighbour-consultation period passes without a sustained objection.
The borough's HMO Article 4 now pulls many conversions into the full planning system. We keep the extension inside the daylight splays, set any glazed roof below the first-floor cill, and retain the garden depth Haringey Council expects — so the back elevation answers the amenity case before a neighbour can lodge one. Two-storey rear extensions we draw with the 7-metre boundary gap and privacy screening resolved on the plan.
We draw rear extensions on every street in the borough. A few of the neighbourhoods where Haringey back-of-house projects come up most often:
Rear extension drawings for Highgate's historic village streets shared with Camden and tightly controlled — depth-checked, daylight-tested and drawn to Haringey Council's guidance.
Rear extension drawings for Crouch End's Victorian and Edwardian terraces around the Broadway — depth-checked, daylight-tested and drawn to Haringey Council's guidance.
Rear extension drawings for Muswell Hill's Edwardian houses with pronounced gables — depth-checked, daylight-tested and drawn to Haringey Council's guidance.
Rear extension drawings for Harringay's the Victorian Ladder of parallel terraced streets — depth-checked, daylight-tested and drawn to Haringey Council's guidance.
Rear extension drawings for Tottenham's Victorian terraces and the Tottenham Green conservation area — depth-checked, daylight-tested and drawn to Haringey Council's guidance.
Rear extension drawings for Wood Green's mixed Victorian terraces and converted flats — depth-checked, daylight-tested and drawn to Haringey Council's guidance.
How far you can extend at the back in Haringey depends on your house type and the route you take. This is how the options compare.
| Route | Depth allowed | Consent needed | What Haringey Council checks |
|---|---|---|---|
| Standard permitted development | 3m terrace/semi · 4m detached | Lawful development certificate (optional) | Depth, 4m height, materials |
| Larger-home prior approval | 6m terrace/semi · 8m detached | Prior-approval notice + neighbour consultation | Neighbour objections on amenity |
| Full householder application | Beyond the above, or two-storey | Full planning permission | Daylight (45°/25°), bulk, garden retained |
| Conservation area | Case by case | Full planning permission | Character, roof form, boundary treatment |
The larger-home route is switched off on designated land — conservation areas such as Highgate and Crouch End and Article 4 streets need a full application.
A fixed process built around how Haringey Council validates and decides rear-extension applications — most drawings are submission-ready within seven days of survey.
Send us your Haringey postcode and house type. We confirm your conservation and Article 4 status, how much rear-extension depth you have under permitted development, and score your odds against live Haringey Council decisions.
We measure the original rear wall, floor and eaves levels, side and rear boundary distances and the neighbours' window positions — the numbers the depth limit and daylight splays depend on.
Chartered designers develop the single or two-storey rear extension to your brief, drawn inside the permitted-development limits or to Haringey Council's extension design guidance, with the daylight angles shown.
We submit the certificate, prior-approval notice or application, handle validation and case-officer queries, and revise the drawings free until Haringey Council issues its decision.
Often not. A single-storey rear extension up to 3 metres deep on a terrace or semi, or 4 metres on a detached house, and no higher than 4 metres, is usually permitted development in Haringey. You will need to involve Haringey Council for anything deeper via the larger-home route, for two-storey rear extensions, and for any rear extension in a conservation area such as Highgate and Crouch End, where those permitted-development rights fall away.
The larger-home extension scheme lets a single-storey rear extension reach 6 metres on a terrace or semi, or 8 metres on a detached house — double the standard allowance. It is not automatic: you submit a prior-approval notification to Haringey Council, neighbours are consulted, and if one objects on amenity grounds the council rules on it. It also does not apply on designated land such as Haringey's conservation areas.
It is the daylight test Haringey Council applies to protect neighbours. Drawn on plan, a line at 45 degrees from the midpoint of the neighbour's nearest ground-floor window should not be crossed by your extension; a companion 25-degree line is checked in section. If the projection breaches it, the extension is likely to be shortened or refused, so we test and prove it on the drawings before submission.
A two-storey rear extension almost always needs a full householder application to Haringey Council, as it sits outside permitted development on most homes. The council checks that it stays at least 7 metres from the rear boundary, does not overbear the neighbours and avoids new overlooking. We resolve the boundary gap, privacy and daylight on the plans so the application is decided on its merits.
Frequently, yes. If the rear extension involves work to a shared wall, building up to the boundary, or excavating foundations near a neighbour's structure, the Party Wall etc. Act applies and you must serve notice — this is separate from Haringey Council's planning decision. We flag it early and can prepare the drawings a party-wall surveyor needs alongside the planning set.
We price each Haringey rear extension on its own footprint and send a fixed, no-obligation quote within one working day. It covers the full drawing pack with free revisions until Haringey Council approves, and we confirm at the outset whether your extension is permitted development, needs prior approval, or a full application. Call 020 7864 7245 to begin.
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