Tottenham · N17 · Haringey

Rear Extension Drawings in Tottenham N17

Fixed-fee, MCIAT-chartered rear extension drawings for Tottenham (N17) homeowners — London Borough of Haringey validation and local constraints handled from the start.

Tottenham (N17) in Haringey mixes listed Georgian villas along Bruce Grove with streets of Victorian terraces, and the everyday brief here is a rear kitchen extension or a rear-dormer loft to add a bedroom without leaving a well-served neighbourhood.

With the Bruce Grove and Tottenham Green conservation areas both covering parts of N17, we check whether your home sits inside a boundary and, if so, steer materials and roof detailing carefully before deciding between permitted development and a full householder application.

Proposed floor plan

Tottenham N17

Tottenham (N17) — planning at a glance

Council: London Borough of Haringey
Postcode district: N17
Planning portal: View the Haringey planning portal
Housing stock: Listed Georgian villas and Victorian terraces along and behind the historic High Road corridor, with later Victorian and Edwardian streets of two-storey bay-fronted houses making up the residential grain.
Article 4: No Article 4 direction is confirmed for the Bruce Grove or Tottenham Green conservation areas, so permitted-development rights remain — but the conservation designations still control alterations to the historic villas and frontages along the High Road corridor.
Conservation: Bruce Grove Conservation AreaTottenham Green Conservation Area
Sample streets: Bruce Grove · Philip Lane · Stoneleigh Road · Tottenham Green
Local constraints: Bruce Grove conservation area (designated 1991) protects listed Georgian villas and a historic High Road frontage, so additions must stay subordinate to the older buildingsTottenham Green conservation area (designated 1976) sets a formal green-and-terrace townscape that rear and loft works must respectThe High Road corridor's Heritage Action Zone means shopfront, forecourt and upper-floor changes are closely managed near the conservation boundaries

Planning in Tottenham (N17): what to know before you apply

Away from the conservation areas, rear extensions and loft conversions typically proceed under permitted development or a lawful-development certificate. Within Bruce Grove or Tottenham Green, or near the listed High Road villas, a full householder application with sympathetic detailing is expected.

Typical Tottenham housing stock

Listed Georgian villas and Victorian terraces along and behind the historic High Road corridor, with later Victorian and Edwardian streets of two-storey bay-fronted houses making up the residential grain.

Streets we regularly draw for in Tottenham

Bruce Grove · Philip Lane · Stoneleigh Road · Tottenham Green

What N17 is actually built of

Measured from 352 classified residential buildings in N17, not from a description of the area.

Tottenham N17 housing mix

Residential building form across the N17 postcode district, from 352 classified buildings.

Attached on more than one side	73%
Attached on one side	24%
Detached	2%
Median building footprint	56 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate	2.09
Buildings classified	352

Source: Ordnance Survey National Geographic Database (derived statistics). Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Extracted 2026-08-17.

Rear Extension Drawings for Tottenham (N17) homes: the package and the process

Depth is the number the application turns on, and it has to be measured from the original rear wall of the house rather than from whatever is there now. The drawings carry that dimension, the eaves and ridge heights, the position of any rooflight, and the boundary distances on both sides.

Where the scheme goes beyond the standard allowance and relies on the larger home extension route, the drawings serve a second purpose: they are what the council sends to the neighbours during the consultation. A clear, dimensioned proposed elevation answers the objection about overshadowing before it is made.

Depth is limited by the plot as much as by the rules. A long garden behind a terrace can take the full allowance, while a short one runs out before the rules do — and on a semi or detached house the same depth reads very differently from the boundary.

Do I need planning permission for a rear extension in London?

Many single-storey rear extensions qualify as permitted development, meaning no planning application is needed, provided depth, height and materials stay within set limits. That changes if your property sits in a conservation area or is subject to an Article 4 direction, both of which can remove permitted development rights across a street or borough — in that case a full householder planning application is required regardless of size.

Even where an extension qualifies, most homeowners obtain a Lawful Development Certificate to confirm that status in writing before building — useful for mortgage lenders, buyers and Building Control. We check your property against your borough's constraints before recommending a route.

How deep can a single-storey rear extension go?

Depth is the main constraint on a rear extension, and it depends on your house type and whether you use standard permitted development or the larger home extension scheme.

Permitted development

Standard permitted development allows a single-storey rear extension up to 3 metres deep for terraced and semi-detached houses, or 4 metres for detached houses, generally with eaves height limited to match or stay close to the existing house.

Larger home extension scheme

The prior-approval scheme extends this to 6 metres for terraced and semi-detached houses and 8 metres for detached houses. Your council writes to affected neighbours; if none object within the notification period, approval follows without a full planning application. If an objection is raised, the council assesses the impact on neighbouring light and outlook itself, rather than automatically refusing, so a well-considered design still has a good chance of approval.

Designing the kitchen-diner: rooflights, bi-folds and daylight

Most rear extensions exist to create one open-plan kitchen, dining and living space, so the drawing work focuses on getting light and flow right within the depth you are allowed.

Structural opening sized for bi-fold or sliding doors across most of the rear elevation
Rooflights or a roof lantern positioned to light the centre of the room, away from the shadow line of the main house
Open-plan layout tested against the 45-degree rule, which protects daylight to your neighbours' windows and can limit how close a flank wall or roof comes to the boundary
Floor build-up and threshold detail coordinated so the new floor meets the existing one without a step

Rear extension routes at a glance
Route	When it applies	Typical fee
Permitted development (Lawful Development Certificate)	Depth within 3m (terraced/semi) or 4m (detached), height and materials within PD limits	PD/LDC pack ~£950–£1,450
Larger home extension (prior approval)	Depth up to 6m (terraced/semi) or 8m (detached), with neighbour notification	from £1,100
Full householder planning permission	Extension exceeds PD/larger-home limits, or the property is in a conservation area with an Article 4 direction	Full Planning pack ~£1,600–£2,400
Planning + Building Regulations (structural)	Combined planning and construction-ready pack with structural calculations for the opening and roof	Planning + Building Regs pack ~£2,200–£3,850

Sheet from a rear extension drawings package drawn for a Tottenham property in N17, showing the existing and proposed arrangement at scale — A sheet from the rear extension drawings package we submit to London Borough of Haringey for Tottenham (N17) properties.

Also in Tottenham N17

Planning Permission Planning Drawings Architectural Drawings Building Regulations Drawings Loft Conversion Drawings Rear Extension Drawings across Haringey Rear Extension Drawings across London

FAQ

Rear Extension Drawings in Tottenham N17 — FAQs

How much does a rear extension cost to design in London?+

Rear extension drawings start from £1,100, with the final fee set by the route your extension takes — permitted development, prior approval or full planning — and whether you need building regulations and structural calculations bundled in. The fee is fixed and agreed upfront.

Do I need an architect for a rear extension?+

No. DrawingsDirect is an MCIAT-chartered architectural technologist practice, producing the same council-accepted drawings as an architect for a fixed fee typically around 30% lower.

How long does it take to get rear extension drawings?+

Drawings are typically ready around 7 days from survey. Once submitted, councils have a statutory 8-week period to determine a standard householder planning application.

What is the 45-degree rule?+

It is a daylight test many London councils apply to check that a rear extension does not block too much light to a neighbour's nearest window, measured as a line drawn at 45 degrees from that window. We check it before submission, not after a refusal.

Will I need a Party Wall Agreement for a rear extension?+

Only if your foundations or new walls sit on or near the boundary with a neighbouring property. A straightforward rear extension set within your own plot often does not trigger the Party Wall etc. Act 1996, unlike a Side Return or Wraparound extension, which usually does.

Do I need planning permission for a loft conversion in Haringey?+

On the Edwardian terraces of the Harringay Ladder and the streets of Crouch End, hip-to-gable and dormer lofts frequently qualify as permitted development within the volume limits, so a full application isn't always needed. Conservation areas — Highgate, Crouch End and Muswell Hill in particular — restrict this. We check your street first and can confirm permitted development with a Lawful Development Certificate.

Will protected views toward Alexandra Palace affect my project?+

They can for roof-level proposals. Haringey protects views toward Alexandra Palace and across the borough's hills, so a dormer or roof extension on a prominent site may be assessed against that setting. We check whether your address falls within a protected view and design the roof form to respect it, which keeps the application on track.

What does Haringey expect on the Harringay Ladder?+

The Ladder has a consistent Edwardian terrace character the council expects extensions and lofts to respect — matching the building line, roofline and materials of the street. We design to that established pattern rather than imposing a standard template, which is what carries applications to consent on these streets.

How long does Haringey Council take to decide?+

Haringey determines most householder applications within the statutory eight-week period once validated; Highgate, Crouch End and Muswell Hill conservation cases can involve additional consultation. We prepare submissions to the council's validation checklist to avoid the drawing queries that cause most delays.

How much do planning drawings cost in Haringey?+

We agree a fixed fee before starting, usually around 30% below an architect's fee for the same council-accepted drawings, with free redraws until Haringey approves. A Harringay Ladder loft and a Highgate conservation application differ in the evidence required, so we quote once we understand your street and project rather than by the hour.

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