Why move out when you can move up? Save on stamp duty and moving costs with a premium loft conversion in Biggin Hill by Building Group.
Get Your Free Biggin Hill QuoteTransform your Biggin Hill property without moving. Add space and value with our expert loft conversion service.
Add up to 20% to your Biggin Hill property value with a professional loft conversion.
No need to leave Biggin Hill. Get the space you need in your current home.
Most Biggin Hill loft conversions completed in 4-6 weeks with minimal disruption.
Create bedrooms, offices, or playrooms perfect for Biggin Hill family living.
Transform your Biggin Hill property's unused loft space into beautiful, functional living areas with our professional loft conversion services. Whether you need an extra bedroom, home office, or playroom in Biggin Hill, we create bespoke solutions tailored to your lifestyle.
Our experienced Biggin Hill team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Biggin Hill conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your Biggin Hill property to maximize space and value
The most cost-effective option for Biggin Hill properties using roof windows for natural light. Perfect for Biggin Hill homes with adequate headroom.
Add valuable floor space and headroom to your Biggin Hill property with single or multiple dormers. Popular choice in Biggin Hill for space optimization.
Transform sloping hip roofs into vertical gable walls in your Biggin Hill home, significantly increasing usable floor space. Ideal for Biggin Hill semi-detached properties.
The premium option for Biggin Hill properties creating maximum space with near-vertical walls. Perfect for period properties in Biggin Hill.
Your Biggin Hill property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Biggin Hill specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Biggin Hill property and budget. Most Biggin Hill conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in Biggin Hill have a 40-50 cubic meter allowance for roof extensions without full planning permission. We handle all Lawful Development Certificate applications for you.
Every conversion we build is inspected by approved inspectors to ensure compliance with Part B (Fire Safety) and Part L (Insulation) of the building regulations specific to Biggin Hill housing stock.
Living in a terraced or semi-detached house in Biggin Hill? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your Biggin Hill loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for Biggin Hill properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified Biggin Hill engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in Biggin Hill homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Biggin Hill loft.
Plastering, decorating, flooring, and interior design services to create beautiful Biggin Hill living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout Biggin Hill city centre, including period properties, modern homes, and conservation areas requiring specialist Biggin Hill planning expertise.
Expert loft conversion services across all Biggin Hill suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Biggin Hill.
Specialist conversions for Biggin Hill's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of Biggin Hill conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
Biggin Hill Loft Conversions Completed
Average Biggin Hill Customer Rating
Years Serving Biggin Hill
Biggin Hill Building Control Approved
With over 15 years of experience in Biggin Hill, we understand local planning requirements, building regulations, and architectural styles. Our Biggin Hill team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Biggin Hill terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern Biggin Hill semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in Biggin Hill conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"Professional service from start to finish. Our hip-to-gable conversion has added so much space to our Biggin Hill home. Quality workmanship."
- Mark Thompson, Biggin Hill
"We are delighted with our Velux conversion in Biggin Hill. The builders were respectful and the finish is high quality. Highly recommended."
- Richard Harris, Biggin Hill
"Cannot recommend them enough for loft conversions in Biggin Hill. They handled all the planning permission and the build was smooth."
- Mark Thompson, Biggin Hill
Loft conversion costs in Biggin Hill vary based on type, size, and specifications. Typical Biggin Hill prices: Velux conversions £20,000-£30,000, Dormer conversions £35,000-£45,000, Hip-to-gable £40,000-£55,000, Mansard conversions £45,000-£65,000. All Biggin Hill quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Biggin Hill survey and detailed quote.
A transparent guide to typical conversion costs in the Biggin Hill area (2025 Estimates)
| Conversion Type | Suitability | Timeframe | Price Range |
|---|---|---|---|
| Velux (Roof Light) | Existing headroom > 2.3m | 4-6 Weeks | £20k - £30k |
| Dormer (Rear) | Semis & Terraces | 6-8 Weeks | £35k - £50k |
| Hip-to-Gable | End-terrace & Semi-detached | 8-10 Weeks | £45k - £60k |
| Mansard | Period Properties / London Styles | 10-12 Weeks | £50k - £75k+ |
*Prices are indicative for Biggin Hill properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the Biggin Hill area. My job is to ensure your project meets local building regulations while maximizing every inch of space. I'm happy to visit your property for a preliminary structural assessment."
Speak to our friendly team about your requirements and get a fixed-price quote for your Biggin Hill conversion.
Book Free Biggin Hill Loft Survey