Windows & doors in Kensington & Chelsea: Planning Permission Guide
A guide to replacing windows and doors in Kensington & Chelsea — when you need planning permission and typical costs.
Based on 144 decided applications in Kensington & Chelsea over 12 months (142 granted, 2 refused).
Kensington and Chelsea is overwhelmingly covered by conservation areas, with intense Article 4 Directions restricting external changes, front garden paving, basement extensions, and window replacements. Listed building coverage is among the highest in London, including large sections of Chelsea and South Kensington. Basement developments are subject to additional council policy restrictions. Professional planning advice is essential for any external alteration.
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5 nearest comparables & refusal reasons for your address.
Get my report — £9See a sample →Recent windows & doors decisions in Kensington & Chelsea
The 5 most recent decided applications. Addresses redacted to postcode area.
Replacement of faulty metal door with wood and glass door to roof above 13 Stafford Terrace, W8
Replacement of single-glazed timber sash and casement windows to the elevations of 2-4 Colville Road (1-9), London, W11 2BP. The works se…
We seek permission for the removal and replacement of both the pitched roof covering and balcony glass infill panels, with an equal and a…
The application is for works to the Grade II Listed public building at Chelsea Sports Centre, Manor Street, London, SW3 5EE, including li…
Replace the existing single-glazed timber windows and rear door throughout with new double glazed slimline heritage timber sliding sash a…
These are borough-wide. See the 5 nearest to your address.
Get my report — £9Permitted Development Rules
Replacing or adding windows/doors may need planning permission in conservation areas or for listed buildings.
Replacing windows and doors like-for-like generally doesn't need planning permission. However, in conservation areas or listed buildings, changes to the appearance of windows and doors may require consent.
Typical Costs in London
Window and door costs depend on the number of openings, material choice, and style.
Typical total
Typically includes
Typically excludes
Highly variable depending on number of windows, material (UPVC vs timber vs aluminium), and style. Per-window costs typically £500–£1,500.
Get a personalised cost estimate based on your actual windows & doors dimensions.
Get my estimateWhich Professionals Do You Need?
Window replacements rarely need professional services. Suppliers typically handle measurement, manufacture, and installation.
This project is unlikely to need specialist professional services beyond a competent builder.
This type of project does not typically require architectural services.
This guidance is based on a typical semi-detached house with no special constraints. Listed buildings, conservation areas, and attached properties may require additional professional input.
Find out exactly which professionals you need for your windows & doors.
Get personalised guidanceConservation Areas & Listed Buildings
In conservation areas, changing window materials (e.g. timber to UPVC) or styles may need planning permission. Listed buildings always need Listed Building Consent for any window or door changes.
Properties in conservation areas often have reduced permitted development rights. Some project types (like side extensions) lose PD rights entirely. An Article 4 Direction can remove additional PD rights.
Listed buildings (Grade I, II*, or II) have no permitted development rights at all. Any external alteration requires Listed Building Consent in addition to any planning permission. An architect experienced in heritage work is essential.
Check if your property is in a conservation area or has other planning constraints.
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