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Free 2026 London Planning Report — Rear Extension Drawings in Notting Hill W11

Rear extension drawings for a stucco terrace in Notting Hill W11, Royal Borough of Kensington and Chelsea
Notting Hill · W11 · Kensington & Chelsea

Rear Extension Drawings in Notting Hill W11

Fixed-fee, MCIAT-chartered rear extension drawings for Notting Hill (W11) homeowners — Royal Borough of Kensington and Chelsea validation and local constraints handled from the start.

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Notting Hill (W11) in Kensington and Chelsea is built around its communal garden squares. The Norland and Avondale conservation areas protect that layout — mid-Victorian stucco terraces arranged so their rear elevations face a shared garden rather than individual private ones. That single fact changes the arithmetic of a rear extension here: the elevation you are altering is seen from a protected communal space, and it is assessed accordingly.

Kensington and Chelsea's Article 4 directions do the rest. Basement work has had its permitted development rights removed, so the deep lower-ground schemes W11 is known for need a full planning application from the outset. A second direction covers minor alterations in conservation areas including works to windows, so replacing windows on a stucco frontage needs permission in its own right. A third removes permitted development rights for commercial to residential conversion. Many W11 addresses are also flats within subdivided houses, which carry no permitted development rights regardless. We establish the garden-square context, the tenure and which directions apply before drawing to the borough's guidance.

Rear extension drawings for a stucco terrace in Notting Hill W11, Royal Borough of Kensington and Chelsea
Isometric illustration of a Notting Hill W11 home rear extension drawings design
Proposed floor plan
Notting Hill W11

Planning in Notting Hill (W11): what to know before you apply

W11 sits within the Norland and Avondale conservation areas, which protect a layout of mid-Victorian stucco terraces built around communal garden squares — so rear elevations face a shared protected garden and are assessed against that setting. Kensington and Chelsea's Article 4 directions remove permitted development rights for basements, for minor alterations in conservation areas including works to windows, and for commercial to residential conversion. Basement schemes and window replacement therefore both need a full planning application. Many addresses are flats within subdivided houses, which have no permitted development rights in any case.

Typical Notting Hill housing stock

Mid-Victorian stucco-fronted terraces laid out around communal garden squares, built as single houses and now a mix of whole houses and large subdivided flats.

Streets we regularly draw for in Notting Hill

Portobello Road · Lansdowne Road · Elgin Crescent · Clarendon Road

Rear Extension Drawings for Notting Hill (W11) homes: the package and the process

Every rear extension drawings we prepare for an Notting Hill property is drawn to Royal Borough of Kensington and Chelsea’s validation standards and tuned to the W11 constraints above. Here is what the drawing package covers and how the process runs from first survey to approval.

A single-storey rear extension is the most common way London homeowners add space, usually taking the form of an open-plan kitchen-diner that opens onto the garden through bi-fold or sliding doors, with rooflights or a roof lantern bringing daylight deep into the plan. Because depth and height are tightly controlled by permitted development rules and by the 45-degree rule that protects neighbouring windows, the design work sits as much in checking what the council will allow as in drawing what you want.

DrawingsDirect draws rear extensions for permitted development, the larger home extension prior-approval scheme and full householder planning, with structural calculations for the opening and roof produced in-house by our MCIAT-chartered team. If your project also involves widening the kitchen sideways or adding a second storey, see our Side Return, Wraparound and Double Storey Extension pages — many London rear extensions grow into one of those during design.

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.

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

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FAQ

Rear Extension Drawings in Notting Hill W11 — 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 works in Kensington & Chelsea?+
Almost always. Near-comprehensive conservation-area coverage and a high density of listed buildings mean a full planning application — and often listed-building consent — is usually required even for modest works. Permitted development can rarely be assumed here. We confirm the exact designations and listing status for your address before any design begins.
Can I build a basement in Kensington & Chelsea?+
Within limits. The borough's basements policy is nationally known for restricting new basements — generally to a single storey — and controlling excavation extent, alongside a basement impact assessment. A basement can still be viable, but it must be designed to the policy from the outset. We confirm what your site allows and evidence the scheme accordingly.
My home is listed — what consent do I need?+
Listed-building consent is usually required alongside or instead of planning permission, and internal as well as external changes can be controlled. Given the borough's extensive listed-building coverage across Kensington, Chelsea and the mews, we screen listing status first and prepare the heritage-led drawings and justification the council expects.
How long does the Royal Borough take to decide?+
The council determines most householder applications within the statutory eight-week period once validated, though listed-building, basement and conservation cases frequently attract additional consultation. We prepare submissions to the borough's exacting validation and design standards to avoid the drawing queries that cause most delays.
How much do planning drawings cost in Kensington & Chelsea?+
We agree a fixed fee before starting, typically around 30% below an architect's fee for the same council-accepted drawings, with free redraws until the council approves. Heritage-led and listed-building schemes require more evidence than a standard extension, so we quote once we understand your address and scheme rather than by the hour.
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