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Loft Conversions in Chiswick
Add a bedroom and bathroom to your Chiswick 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
Chiswick's terraces are ideal for an L-shaped dormer over the main roof and back addition, adding a double bedroom with an en-suite. Semis suit a hip to gable with a rear dormer, where the street allows it.
Because so much of Chiswick is in conservation areas, many loft conversions here need planning permission rather than Permitted Development. We will tell you honestly what is likely to be approved on your street, prepare the drawings and handle the application with Hounslow council, plus the Party Wall notices.
We are based in Hounslow and manage everything from survey to sign-off.
Chiswick (W4), Turnham Green, Grove Park, Strand on the Green, Bedford Park, Gunnersbury, Brentford
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 Chiswick?
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 Chiswick?
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 Chiswick, Grove Park, Turnham Green, Strand on the Green, Bedford Park and Brentford. We reply within 1 working day.