Basement Conversion in Ealing

Redefining your West London property with a modern basement conversion in Ealing requires specialist knowledge and an understanding of local building regulations.

Proficiency Design & Build delivers bespoke basement conversions across Central London and the surrounding areas, increasing your home's long-term property value.

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Rated 4.9/5 on

Fantastic builders who really care about the quality of finish.

Oliver Meek ( Director At Rio Cinema )

Featured Building Project

Ealing, W5

This North London house extension highlights the skill and attention to detail of our experienced team. The lower-floor levels are finished with elegant hardwood flooring, complemented by black-framed bi-folding doors and skylights that fill the area with natural light.

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The Proficiency Difference

Local
Expertise

With over 14 years of experience in residential construction, we've become Ealing's trusted basement conversion experts. Our expertise encompasses interior design, structural engineering, damp-proofing systems, and planning requirements as required by the Ealing Council.

Reliable Project Management

Every Ealing basement project is overseen by a dedicated project manager who coordinates tradesmen and timelines, and provides expert advice. This hands-on approach ensures transparency and a smooth construction process from start to finish.

High-Quality
Finishes

We select premium materials and collaborate with skilled craftsmen to deliver refined interiors that complement your W5 home and lifestyle. Attention to detail at every building phase ensures your new basement feels cohesive with the rest of your Ealing property.

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W5 Basement Conversion Specialists

As experienced basement conversion contractors, we transform outdated Ealing basements into practical living spaces that suit modern London living.

Our basement conversion company handles all aspects of compliance: planning permissions, local building regulations, party wall agreements, and conservation area requirements directly through Ealing Council on your behalf.

From home gyms, swimming pools, and home offices to utility rooms and wine cellars, our basement conversion specialists deliver exceptional living spaces throughout the entire W5 area tailored to your needs and lifestyle.

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Basement Conversion Process

Initial On-Site Assessment

Every new basement conversion project starts with a site visit to assess structure, access, drainage, and planning considerations.

Design & Structural Engineering

Our ARB and RIBA-certified architects and interior design team prepare precise technical drawings to support planning submissions.

Excavation & Structural Work

All groundworks, including basement excavation, fully comply with current regulations and industry best practices.

Waterproofing & Drainage

Industry-approved waterproofing systems are installed to prevent moisture and water ingress.

Fit-Out & Completion

Bespoke joinery and lighting, with thoughtfully curated finishes and layouts, ensure your new Ealing basement is completed to the highest standard.

Our Building Company

Proficiency Design & Build is an established construction company serving London and the Home Counties, backed by a 4.9/5 Google rating.

Federation of Master Builders - Membership confirms high-quality craftsmanship, financial stability, and adherence to professional standards.
Fully Insured - Comprehensive insurance cover, including Public Liability, Professional Indemnity, and Contractors All Risk. We are also NICEIC and Gas Safe approved.
Considerate Contractor Scheme - We're committed to safe working practices, neighbour care, and minimally invasive impact on the surrounding environment.