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 71 decided applications in Kensington & Chelsea over 12 months (68 granted, 3 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.
Recent windows & doors decisions in Kensington & Chelsea
The 5 most recent decided applications. Addresses redacted to postcode area.
Repair and repainting of door and its immediate surrounds.
Details required by condition 3 (submission of details) of listed building consent 24/03342 (Exchange of single-glazed timber windows and…
Replacement of all elevation windows and flat balcony doors to a block of 10no. flats with double glazed white coloured uPVC of casement …
Installation of retractable awning to rear bay window at upper ground floor (Retrospective Application)
Replacement of existing modern single-glazed sash windows with vacuum-glazed timber sashes on front and rear elevations; upgrading any or…
These are borough-wide. See the 5 nearest to your address.
Check your address freePermitted 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.
Check my propertyFrequently Asked Questions
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