For pros
Up, up and away 🪜

Loft conversions in SW18, Wandsworth

Loft conversions in Wandsworth (SW18): turn the dusty attic into a bedroom, office or hideaway. Tell us about your roof and up to 3 local builders will quote.

✨ Free to use🤝 No obligation🔒 Shared with 3 pros max

✅ What your loft conversions covers in SW18 (Wandsworth)

  • A survey of your roof space and structure
  • Velux, dormer, hip-to-gable or mansard options
  • Floor strengthening and insulation
  • Stairs, windows and fire safety
  • Electrics, heating and finishing

💷 Typical loft conversions prices in SW18 (Wandsworth)

Velux (rooflight) conversion£35,000 to £55,000
Dormer loft conversion£55,000 to £85,000
Mansard conversion£70,000 to £110,000
Typical London prices in 2026. A guide only; your quotes will depend on the job.

💬 Questions about loft conversions in Wandsworth

Is my loft suitable in Wandsworth?

Most need about 2.2 metres of head height at the highest point. A builder can check this on a quick visit before you commit to anything.

Do I need planning permission?

Many loft conversions fall under permitted development. Flats, conservation areas and bigger roof changes usually need permission. Ask builders when they quote.

How long will it take?

Often 8 to 12 weeks of building work once approvals are in. Your builder will plan it with you.

📍 Loft conversions covering SW18

SW18 covers Wandsworth in the London Borough of Wandsworth. Enter your full postcode above and we'll send your job to builders who work in SW18 and nearby, like SW11 (Battersea), SW12 (Balham) and SW15 (Putney).

Want more than loft conversions?

✨ More jobs for builders in SW18