Basement in Kingston upon Thames: Planning Permission Guide
What you need to know about basement extensions in Kingston upon Thames — planning requirements, costs, and professional guidance.
Based on 21 decided applications in Kingston upon Thames over 12 months (14 granted, 7 refused).
Kingston has Green Belt in its south, including Chessington and Malden Rushett. Conservation areas include Kingston Town Centre, Coombe Hill, Hampton Wick, and Surbiton. Listed buildings cluster around the medieval market square, All Saints Church, and the historic Kingston Bridge. Flood zones apply along the Thames, restricting certain outbuilding classes near the river. The borough borders Richmond Park, a National Nature Reserve with additional controls near its edges.
Recent basement decisions in Kingston upon Thames
The 5 most recent decided applications. Addresses redacted to postcode area.
Details required for Condition 34 (Acoustic) of planning permission 24/00805/FUL (Demolition of existing buildings, redevelopment to pro…
Conversion of existing basement to a flat, with associated works to enlarge existing light wells, replacement windows, flood prevention g…
Details required for Conditions 3.a (Detailed Schedule and Specification.) 3.b (Site Plan,Elevations,Key Plans) of planning permission 24…
Details required for Condition 7 (Air Quality Assessment) and Condition 15 (Dust Management Plan) of planning permission 24/00805/FUL (De…
The existing rear garden is on a sloping ground and the proposed double storey basement dwelling is to be fully burried in the ground kee…
These are borough-wide. See the 5 nearest to your address.
Check your address freePermitted Development Rules
Basement excavation requires a full planning application.
Basement excavation does not have permitted development rights under Part 1 of the GPDO. A full planning application is always required.
Typical Costs in London
Basements are among the most expensive home improvement projects. Costs vary enormously depending on depth, ground conditions, and access.
Cost per m²
construction rate
Typical total
Based on 25–50 m²
Typically includes
Typically excludes
Basement projects are complex and costs vary enormously depending on depth, ground conditions, waterproofing, and access. Professional advice is essential.
Get a personalised cost estimate based on your actual basement dimensions.
Get my estimateWhich Professionals Do You Need?
Basement projects are complex and always require specialist professional input — an architect, structural engineer, and usually a party wall surveyor.
You'll need an architect, a structural engineer, and a party wall surveyor for this project.
Basement projects are complex and require specialist architectural and structural design.
Typical fee: £5,000–£15,000 (Full architectural service)
Basement excavation requires detailed structural engineering for underpinning, retaining walls, and waterproofing.
Typical fee: £2,000–£5,000
Basement excavation almost always triggers the Party Wall Act due to work near neighbouring foundations.
Typical fee: £700–£1,500 (per neighbour)
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 basement.
Get personalised guidanceConservation Areas & Listed Buildings
In conservation areas, basement applications receive additional scrutiny. The council will consider the impact on neighbouring properties and the character of the area.
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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