Basement Conversions in Ealing, W5
Cellar and basement conversions in Ealing: dry, habitable rooms below ground with designed waterproofing, natural light and building control approval.
Covered under one contract
- Structural design and calculations
- Planning or lawful development certificate
- New staircase, dormer and roof windows
- Insulation, fire safety and building control
- En-suite designed and fitted
- Waterproofing with guarantee for basements
Basement Conversions in Ealing.
Where a house cannot grow outwards or upwards, it can grow downwards. Many of the older houses in Ealing already have a cellar or vaults, and converting them into a usable floor is a well-established route to a utility room, guest suite, study or cinema room.
The two things that decide whether a basement works are waterproofing and light. We use a designed system, normally a cavity drainage membrane with a sump and pump, which carries a guarantee, and we bring light in through a lightwell or a rear opening where the site allows. Ceiling height, drainage and structure are all surveyed at the outset.
Converting an existing cellar without changing the exterior of the house does not usually need planning permission. Lightwells, listed buildings and new excavation do, and the central London boroughs have their own basement policies with impact assessments. All basements need building regulations approval and most involve party wall notices, which we prepare and serve.
- Area
- Ealing, W5 · W13
- Council
- London Borough of Ealing
- Housing
- Victorian and Edwardian houses, large semi-detached villas near the commons, 1930s houses, Brentham Garden Suburb cottages
- Transport
- Ealing Broadway, Ealing Common, South Ealing
- Basement, existing cellar
- 10 to 16 weeks
- Consent
- Often permitted development for lofts
- Waterproofing
- Guaranteed system, designed for the site
Ealing: the houses and the planning rules.
Ealing, the Queen of the Suburbs, has some of the best family housing in west London: substantial Victorian and Edwardian houses around Ealing Common and Haven Green, red-brick villas along the roads towards Ealing Broadway, and the Arts and Crafts cottages of Brentham Garden Suburb. Several districts are conservation areas.
We have completed two bathroom refurbishments and a fitted kitchen in Ealing, one with a freestanding black bath and walk-in shower, one with Italian tiles and bespoke furniture, and a handle-less kitchen with a quartz island.
The Ealing Common, Ealing Green, Haven Green, Castlebar and Brentham Garden Suburb conservation areas cover the older streets.
London Borough of Ealing
Ealing decides applications. Outside the conservation areas, rear extensions and lofts are often permitted development; within them, Article 4 directions apply on many streets.
Edwardian houses
Deep plans with rear additions suit side-return and wraparound extensions; the roofs generally have enough headroom for a dormer loft.
Brentham Garden Suburb
Tight controls on external changes; internal refurbishment is unaffected but needs building regulations approval.
Approvals for basement conversions in Ealing.
Converting an existing cellar without altering the exterior does not usually need planning permission; lightwells, listed buildings and new excavation do. Every basement needs building regulations approval and a designed waterproofing system, and most involve party wall notices.
Ealing decides applications. Outside the conservation areas, rear extensions and lofts are often permitted development; within them, Article 4 directions apply on many streets.
What basement conversions in Ealing includes.
- Structural design and calculations
- Planning or lawful development certificate
- New staircase, dormer and roof windows
- Insulation, fire safety and building control
- En-suite designed and fitted
- Waterproofing with guarantee for basements
From site visit to handover.
- 01
Site visit & consultation
We visit, listen and measure. Brief, budget and constraints understood before any advice is given.
- 02
Design & itemised quote
Our architects and engineers draw the scheme, and from that we provide a transparent, itemised quotation for your approval.
- 03
Planning & approvals
Planning applications, building control and party wall matters handled for you.
- 04
Build, managed weekly
Our own trades, sequenced by a site manager. Progress reported every week.
- 05
Handover & aftercare
Joint snagging walk-through, documentation, and a guarantee on our workmanship.
Basement Conversions in Ealing: your questions.
Can I convert a cellar in Ealing?
Usually. Converting an existing cellar without changing the outside of the house does not normally need planning permission. Lightwells, listed buildings and new excavation do, and every basement needs building regulations approval.
How do you keep a converted basement dry?
With a designed waterproofing system, typically a cavity drainage membrane with a sump and pump, or tanking where appropriate. It carries a guarantee and is designed for the ground conditions found on site.
Which parts of Ealing do you cover?
All of Ealing and W5 · W13, including Ealing Common, Haven Green, Castlebar Road, Mount Park Road, The Avenue, Northfield Avenue, and the neighbouring districts. We are based in London and our teams work across central, north, north-west, west and south-west London.
Our work near Ealing.
Other services in Ealing.

House Refurbishment in Ealing
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Flat Refurbishment in Ealing
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House Extensions in Ealing
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Structural Alterations in Ealing
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Loft Conversions in Ealing
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Kitchen Renovation in Ealing
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Bathroom Renovation in Ealing
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Bespoke Joinery & Fitted Furniture in Ealing
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Architectural & Interior Design in Ealing
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Planning Permission & Building Regulations in Ealing
Read moreBasement Conversions across London.
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All of West LondonTalk to us about a basement conversion in Ealing.
We will visit, listen and explain what is possible for your property and how it would be approved. No pressure, no sales pitch.



