Ornate red-brick Victorian houses beside a newer red-brick block of flats with bay windows and balconies, set behind brick garden walls on a London street.

W8 · Kensington · Kensington & Chelsea

Planning and building regulation drawings in Kensington (W8)

W8 is the Kensington of white stucco: terraces and garden-square houses around Kensington Palace and the High Street, much of it Victorian and a large share of it listed. Kensington Court is among its streets. Many of the houses have been divided into flats, while others are held as substantial single homes, so the work here seldom involves anything visible at the front. It tends to be internal reconfiguration, roof and rear alterations, and basement schemes.

MCIAT chartered technologists
Royal Borough of Kensington and Chelsea granted 94% of 574 householder applications
Drawings in about 7 days

Almost the entire district sits within Royal Borough conservation areas, among them Kensington Palace, Kensington Square, Kensington Court and Pembridge. That removes most householder permitted development, so a full planning application is the starting point for nearly any external change, and where a building is listed, listed building consent is needed for internal works as well. The drawings therefore need to show clearly how a change sits within the terrace.

Basements are a particular subject. The borough has one of the stricter basement policies in the country, which generally limits excavation to a single storey under part of the garden and controls how the work is built. In stucco terraces where houses touch and gardens are small, party-wall and neighbour-amenity issues sharpen every extension and every dig. We check the conservation area, the listing and the basement position against your address first, and say plainly what looks achievable before you spend on design.

Planning in Kensington: what to know before you apply

In W8, the Royal Borough's conservation areas cover almost the whole district and many buildings are listed, so modest works usually go through a full planning application, often with listed building consent alongside it. Article 4 directions remove permitted development across much of the conservation coverage. Under the basement policy, a new basement is generally held to one storey and its extent is controlled, with the construction impact examined closely. Detailed material and elevation control applies to mews and garden-square townscape. We confirm every constraint up front, so that the drawings are prepared for the route that is actually available.

Applications are decided by Royal Borough of Kensington and Chelsea — its planning pages.

Check your route

Does your Kensington project need planning permission?

Route check · Kensington (W8)

ProjectProperty

Listed building?

Conservation area?

Likely permitted development — no planning applicationNeeds checking

A single-storey rear extension up to 4 m deep on a detached house, or 3 m on any other house, is Class A permitted development subject to the height and materials conditions.
An Article 4 direction applies here and may withdraw this freedom — the schedule must be checked before relying on it.
One or more constraints are unknown — we check the council's registers as part of the free appraisal.
Where permitted development applies, a lawful development certificate proves it for lenders and buyers.

Sources: GPDO 2015, Schedule 2, Part 1 · Planning Portal — common projects · Building Regulations 2010 — when approval is needed

This is a first-pass indication from the national rules, not planning advice for your property. Your council's registers, any Article 4 schedule and the exact dimensions decide it — the free appraisal checks all three before we recommend a route.

Confirm it with a free appraisal

Kensington (W8) in numbers

What Royal Borough of Kensington and Chelsea has decided, and what W8 is built of — the two facts that shape every job here.

Householder planning decisions — Royal Borough of Kensington and Chelsea

Kensington (W8) applications are decided by Royal Borough of Kensington and Chelsea; these are its published householder figures for the last four quarters.

Householder applications decided2025 Q2 to 2026 Q1	574
Granted	541
Refused	33
Grantedof 574 decisions · England 90%	94%
Decided within 8 weeksof 339, excluding prior approvals	97%

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Permitted development prior approvals — Royal Borough of Kensington and Chelsea

How the larger-home-extension route has fared with Royal Borough of Kensington and Chelsea, which decides W8 notifications.

Larger home extension prior approvals — not required2024 Q2 to 2026 Q1	0
Prior approval granted	0
Prior approval refused	0

Source: Ministry of Housing, Communities and Local Government (PS1 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Planning appeals — Royal Borough of Kensington and Chelsea

Refusals in W8 can be appealed to the Planning Inspectorate; this is Royal Borough of Kensington and Chelsea's householder appeal record.

Householder appeals determined2021–2026	188
Allowed	81
Allowedof 188 · England 36%	43%

Source: Planning Inspectorate appeals casework. Open Government Licence v3.0 Extracted 2026-09-22.

Conservation areas and Article 4 directions — Royal Borough of Kensington and Chelsea

Register counts for Royal Borough of Kensington and Chelsea. A count describes what the council has published, never a rank against another council.

Conservation areas in the register41 dated, 1968–2019	41
Article 4 directions in the register	84
Areas covered by an Article 4 direction	84

Source: MHCLG Planning Data Platform. Open Government Licence v3.0 Extracted 2026-09-22.

What W8 is built of

Residential building form across Kensington (W8), from 410 classified buildings — the fact that decides party walls, side returns and loft headroom before any policy does.

Attached on more than one side	80%
Attached on one side	16%
Detached	3%
Median building footprint	79 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate	2.96
Buildings classified	410

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 2026-09-22.

Day 0Measured survey of your Kensington property — or your existing plans if you have them.
About 7 daysDrawings issued for your approval. Free redraws until you are happy.
SubmissionWe validate against Royal Borough of Kensington and Chelsea’s checklist and submit on your behalf.
Council: 8-week targetHouseholder applications carry an 8-week statutory target. Royal Borough of Kensington and Chelsea decided 97% of 339 recent householder applications inside it.

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Neighbourhoods

Streets and neighbourhoods in W8

Kensingtonpredominantly Victorian, with grand mid-19th-century stucco terraces and garden squares

Nearby

Nearby postcode districts

Hanwell W7Maida Vale W9Hammersmith W6North Kensington W10Ealing Broadway W5Notting Hill W11Chiswick W4Shepherds Bush W12

FAQ

Kensington (W8) — FAQs

Do I need permission to change the inside of my listed Kensington house?+

Often yes. Where a building is listed, internal works can need listed building consent as well as anything planning-related. We check the listing and what it covers before suggesting a layout.

Can I add a basement under my W8 house?+

Possibly, within tight limits. The borough's policy generally restricts a basement to a single storey and controls its extent, and the neighbouring houses bring party-wall questions. We check what is realistic for your property first.

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