Basement in Ealing: Planning Permission Guide
What you need to know about basement extensions in Ealing — planning requirements, costs, and professional guidance.
Based on 86 decided applications in Ealing over 12 months (85 granted, 1 refused).
Ealing has over 30 conservation areas including Bedford Park — England's first garden suburb, with notoriously strict design controls — plus Ealing Common, Hanwell, Northfields, and Walpole. Listed building density is high in Bedford Park. Article 4 Directions restrict external changes in Bedford Park and other heritage areas, targeting window replacements and external alterations. The council's conservation enforcement is consistently active.
Recent basement decisions in Ealing
The 5 most recent decided applications. Addresses redacted to postcode area.
Detailed Travel Plan part pursuant to Condition 4 (Phase 1 only) of planning permission ref: 235010FUL dated 27.02.2026 for: Redevelopmen…
Details of construction management plan pursuant to condition 15 of planning permission Ref: 232967FUL dated 31.01.2024 for 'Construction…
Details of external noise level with mitigation measures pursuant to condition 11 of planning permission ref: 241463FUL dated 06/11/2024 …
Details of a noise assessment of external noise levels from transport and industrial/ commercial/ cultural sources pursuant to condition …
Details of Materials and External Surfaces pursuant to Condition 3 of planning permission ref: 235010FUL dated 27.02.2026 for: Redevelopm…
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
Just want a quick yes/no for your basement?
Run our free 2-minute check to see whether your project likely qualifies as permitted development in Ealing — your address, your constraints, your council's own recent decisions.
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