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Loft Conversions in Brentford
Add a bedroom and bathroom to your Brentford home. Fixed price, Building Regulations and Party Wall handled.
- Free loft survey and head-height check
- Planning and conservation area advice
- Structural design and calculations
- Lawful Development Certificate or planning application to Hounslow council
- Party Wall notices
- Building Regulations application and inspections
- Steel beams and structural work
- Rear dormer, L-shaped dormer, hip to gable or Velux
- Insulation and fire safety to current regulations
- New staircase
- Electrics, heating and plumbing
- En-suite shower room if required
- Plastering, flooring and decoration
- Building Control completion certificate
Brentford's Victorian and Edwardian terraces suit an L-shaped dormer over the main roof and back addition, which can add a double bedroom and a bathroom. Interwar semis suit a hip to gable with a rear dormer.
Some Brentford streets are in conservation areas, where a dormer needs planning permission and a sympathetic design. Outside those, many lofts are Permitted Development, which we confirm with a Lawful Development Certificate from Hounslow council. Party Wall notices are almost always needed on terraces, and we handle them.
We are based nearby in Hounslow and run the whole job with one team.
Brentford (TW8), Brentford End, Syon, Isleworth, Chiswick, Kew Bridge, Ealing
Survey before quote. We check your roof and head height before we price.
Fixed price. No open-ended day rates.
Party Wall handled. We manage the notices with your neighbours.
Straight planning advice. We tell you what is realistic for your street.
Fully insured. Public liability cover on every project.
How much does a loft conversion cost in Brentford?
A Velux conversion typically costs £30,000 to £40,000. A rear dormer is usually £40,000 to £55,000, and an L-shaped dormer or hip to gable with dormer usually £50,000 to £70,000. An en-suite adds roughly £6,000 to £10,000.
Do I need planning permission for a loft conversion in Brentford?
Many loft conversions are Permitted Development, which we confirm with a Lawful Development Certificate. In conservation areas, or where Permitted Development rights have been removed, you need planning permission from Hounslow council. We check before we draw anything.
How long does it take?
A dormer conversion usually takes 8 to 12 weeks on site. A Velux conversion takes 4 to 6 weeks.
Book a free loft survey and get a fixed written quote. We cover Brentford, Syon, Isleworth, Chiswick and Ealing. We reply within 1 working day.