Single-storey, double-storey, rear and side extension drawings for Haringey homes — measured to Haringey Council's design guidance, delivered in days and revised free until your decision, with a free approval-odds check before you commit.
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 homes come in a handful of recurring shapes, and each one points to a different extension. The borough is built largely from Victorian and Edwardian terraces, large Edwardian houses in Muswell Hill and converted period flats, so a Victorian terrace usually wants a rear or side-return infill, while an interwar semi has room for a wider single-storey wrap or a two-storey side addition. Haringey Council judges every one of them against Haringey Local Plan and the borough's Alterations and Extensions SPD, weighing footprint, height and the impact on the house next door before it looks at the elevations.
That is why the drawings decide the outcome. We set the extension depth against the permitted-development limits precisely, keep the eaves and ridge within the allowances, and plot the 45-degree daylight lines to the neighbours' windows so the case officer can see the amenity test is passed. Side-return and rear extensions are weighed against the tight party-wall relationships of the Ladder terraces, so we design around it from the first sketch rather than discover it at validation.
Haringey also protects whole 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. On designated land the larger-home extension route and most side extensions stop being permitted development, so we confirm your address against those layers before drawing a line.
Plenty of Haringey extensions are permitted development and need no planning application — a single-storey rear extension within the depth and height limits is the common case. You will normally need to apply to Haringey Council if any of these apply:
We draw the footprint, the ridge and eaves heights and the neighbours' daylight on the page — the relationships Haringey Council's officers weigh first — and submit a validation-complete pack, whether that is a lawful development certificate, a prior-approval notification or a full householder application.
Below is Haringey Council's real householder decision record, drawn 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. A complete, policy-literate extension pack anticipates those pressure points before submission, which is why professionally drawn applications are decided faster and refused less often than DIY ones.
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 extension that lands most often is the single-storey rear addition — a glazed kitchen-diner across the back of the house, kept within the permitted-development depth or taken to a full application where the ground floor wants more. On the borough's victorian and edwardian terraces, a side-return infill frequently pairs with it to square off the plan; on wider converted period flats, a two-storey side or rear extension can add a bedroom above without swallowing the garden.
The borough's HMO Article 4 now pulls many conversions into the full planning system. We size the extension to the amenity and daylight tests, match the roof and materials to the host house, and keep enough garden to satisfy Haringey Council's space standards — so the scheme answers the borough's questions before an objection can raise them. Where permitted-development rights are used up or removed, we prepare the householder application to the council's extension design guidance instead.
We draw extensions on every street in the borough. A few of the neighbourhoods where Haringey projects come up most often:
Extension drawings for Highgate's historic village streets shared with Camden and tightly controlled — footprint-checked, daylight-tested and drawn to Haringey Council's guidance.
Extension drawings for Crouch End's Victorian and Edwardian terraces around the Broadway — footprint-checked, daylight-tested and drawn to Haringey Council's guidance.
Extension drawings for Muswell Hill's Edwardian houses with pronounced gables — footprint-checked, daylight-tested and drawn to Haringey Council's guidance.
Extension drawings for Harringay's the Victorian Ladder of parallel terraced streets — footprint-checked, daylight-tested and drawn to Haringey Council's guidance.
Extension drawings for Tottenham's Victorian terraces and the Tottenham Green conservation area — footprint-checked, daylight-tested and drawn to Haringey Council's guidance.
Extension drawings for Wood Green's mixed Victorian terraces and converted flats — footprint-checked, daylight-tested and drawn to Haringey Council's guidance.
The right extension in Haringey depends on your house type and how much garden you can give up. This is how the main options compare on planning route and what they add.
| Extension type | Permitted development? | What it adds | What Haringey Council checks |
|---|---|---|---|
| Single-storey rear | Often, within 3m/4m depth (6m/8m via prior approval) | Bigger kitchen-diner across the back | Depth, height, neighbour daylight (45°) |
| Side-return infill | Sometimes, if within width and height limits | Squares off an L-shaped ground floor | Width vs the original house, glazing to boundary |
| Two-storey rear/side | No — full application | Extra bedroom or bathroom above | Bulk, overlooking, 7m rear-boundary gap |
| Wraparound (rear + side) | No — full application | Whole-width open-plan ground floor | Combined footprint and garden retained |
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 extension applications — most drawings are submission-ready within seven days of survey.
Tell us your Haringey postcode and house type. We confirm your conservation and Article 4 status, how much permitted-development depth you have left, and score your odds against live Haringey Council decisions.
We measure the existing footprint, floor and eaves levels, boundary distances and the neighbours' window positions — the numbers the depth limits and daylight tests depend on.
Chartered designers develop the single-storey, two-storey or side extension to your brief, drawn inside the permitted-development limits or to Haringey Council's extension design guidance.
We submit the certificate, prior-approval notice or application, manage validation and case-officer queries, and revise the drawings free until Haringey Council issues its decision.
Not always. 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 apply to Haringey Council for two-storey extensions, side extensions wider than half the house, anything forward of the front wall, deeper rear extensions under the larger-home prior-approval route, and any extension in a conservation area such as Highgate and Crouch End.
Standard permitted development allows 3 metres on a terraced or semi-detached house and 4 metres on a detached one. The larger-home extension scheme can double that to 6 or 8 metres, but it needs a prior-approval notification to Haringey Council and a neighbour-consultation period, and it does not apply on designated land such as Haringey's conservation areas. We confirm which route your property qualifies for before drawing.
Two-storey and double-storey extensions almost always need a full householder application to Haringey Council, because they fall outside permitted development on most homes. The council looks closely at bulk, overlooking of neighbours and the 7-metre gap a two-storey rear extension must keep from the rear boundary. We design to those tests and show the daylight and privacy angles on the drawings.
A householder planning application in Haringey runs to a statutory eight-week target, a larger-home prior-approval notification to around six weeks including the neighbour-consultation period, and a lawful development certificate to eight weeks. Incomplete submissions stall at validation, so we submit a complete pack and manage officer queries to keep the decision on schedule. Haringey Council is the decision-maker.
Yes — planning permission and building regulations are separate consents, and almost every extension needs both. Planning governs whether you can build it; building control governs how it is built, covering structure, insulation, drainage and fire safety. We prepare the building-regulations drawings alongside the planning set so Haringey Council's building control or an approved inspector can sign the work off.
Every house and brief is different, so we price each Haringey extension individually and send a fixed, no-obligation quote back within one working day. It covers the full drawing pack with free revisions until Haringey Council approves, and we tell you upfront whether your extension qualifies as permitted development. Call 020 7864 7245 to get started.
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.