Loft Conversions
Add a bedroom, en-suite, or home office without moving house.
All Well Property Services provides professional loft conversions across South East London. Prices range from £45,000to £80,000. Typical build time: 6–10 weeks. All projects include a fixed-price contract, single project manager, and full Building Control sign-off. Call 020 3920 9617 for a free consultation.
What We Offer
Add a bedroom, en-suite, or home office without moving house. We build dormer, L-shaped, hip-to-gable, and mansard loft conversions — handling structural design, staircase build, and Building Regulations sign-off as one team.
- ✓Dormer loft conversions
- ✓L-shaped loft conversions
- ✓Hip-to-gable conversions
- ✓Mansard conversions
- ✓En-suite bathroom installation
- ✓Velux and dormer windows
- ✓Staircase design and build
- ✓Building Regulations handled
Typical Investment
6–10 weeks | Fixed-price contracts
Dormer conversion
Most popular, flat-roof rear dormer
£45,000 – £60,000
L-shaped dormer
Maximum space on Victorian terraces
£55,000 – £70,000
Hip-to-gable conversion
Ideal for semi-detached properties
£55,000 – £75,000
Mansard conversion
Maximum headroom, usually needs planning
£65,000 – £85,000
Most clients in South London typically invest between £50,000 and £65,000 for a dormer loft conversion with en-suite.
Fixed-price contracts | No hidden costs | 6–10 week typical build
What Affects the Cost?
- •Roof structure and conversion type
- •En-suite bathroom inclusion (adds £5,000-£12,000)
- •Staircase complexity and existing layout
- •Party wall requirements (terraced/semi-detached)
- •Conservation area or planning requirements
Want a personalised estimate?
Use our free loft cost calculator→Recent Loft Conversions Projects
Loft Conversions across South East London
What Our Customers Say
“All Well managed our project from start to finish. The fixed-price contract meant no surprises, and the result is stunning.”
Verified Customer
“Professional team, clean site, and they handled all the paperwork. Would recommend to anyone.”
Verified Customer
“Great communication throughout. They kept to the timeline and budget exactly as quoted.”
Verified Customer
Accredited & Certified
Frequently Asked Questions
- What types of loft conversion are there?
- The most common types are dormer (from £45,000), L-shaped (from £55,000), hip-to-gable (from £55,000), and mansard (from £65,000). The best option depends on your roof shape, budget, and space requirements.
- Do I need planning permission for a loft conversion?
- Most dormer and hip-to-gable conversions fall under permitted development and do not require planning permission. Mansard conversions and properties in conservation areas usually do need approval.
- Do I need a party wall agreement for a loft conversion?
- If your loft conversion involves work on or near a shared wall with a neighbour, you will need a party wall agreement under the Party Wall Act 1996. We guide you through this process and recommend a surveyor.
Get a Free Loft Conversions Quote
Free site visit. No-obligation quote. We respond within 24 hours — usually the same day.
Book Free Consultation