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Loft Conversions in Twickenham
Add a bedroom and bathroom to your Twickenham home. Fixed price, full Building Regulations and Party Wall management.
- Free loft survey and head-height check
- Planning and conservation area advice
- Structural design and calculations
- Lawful Development Certificate or planning application to Richmond upon Thames council
- Party Wall notices
- Building Regulations application and inspections
- Steel beams and structural work
- L-shaped dormer, rear 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
Twickenham's terraces and semis are some of the best houses in West London for loft conversions. On the Victorian and Edwardian terraces of St Margarets and Strawberry Hill, an L-shaped dormer over the main roof and back addition can add a double bedroom and a bathroom. On the 1930s semis of Whitton and Heathfield, a hip to gable with rear dormer is the usual choice.
If your house is in one of Richmond's conservation areas, a dormer will need planning permission and a careful design. We will tell you honestly what is likely to be approved before you spend anything.
We are based nearby in Hounslow and manage every part of the conversion, so you deal with one team from survey to sign-off.
Twickenham (TW1, TW2), St Margarets, Strawberry Hill, Whitton, Heathfield, Fulwell, Teddington, Isleworth, Hounslow
Survey before quote. We check your roof and head height before we price.
Fixed price. No open-ended day rates.
Party Wall handled. Essential on Twickenham terraces, and we manage it.
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 Twickenham?
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.
Can I do an L-shaped dormer without planning permission?
Often, yes, if your house is outside a conservation area and the dormer stays within Permitted Development limits. We recommend a Lawful Development Certificate to confirm it, and we handle the application.
How long does it take?
An L-shaped or rear dormer 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 Twickenham, Whitton, St Margarets, Strawberry Hill, Teddington and Isleworth. We reply within 1 working day.