Building Group is Mumby's premier loft conversion company. We combine architectural expertise with master craftsmanship to deliver superior results.
Get Your Free Mumby QuoteTransform your Mumby property without moving. Add space and value with our expert loft conversion service.
Add up to 20% to your Mumby property value with a professional loft conversion.
No need to leave Mumby. Get the space you need in your current home.
Most Mumby loft conversions completed in 4-6 weeks with minimal disruption.
Create bedrooms, offices, or playrooms perfect for Mumby family living.
Transform your Mumby 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 Mumby, we create bespoke solutions tailored to your lifestyle.
Our experienced Mumby team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Mumby conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your Mumby property to maximize space and value
The most cost-effective option for Mumby properties using roof windows for natural light. Perfect for Mumby homes with adequate headroom.
Add valuable floor space and headroom to your Mumby property with single or multiple dormers. Popular choice in Mumby for space optimization.
Transform sloping hip roofs into vertical gable walls in your Mumby home, significantly increasing usable floor space. Ideal for Mumby semi-detached properties.
The premium option for Mumby properties creating maximum space with near-vertical walls. Perfect for period properties in Mumby.
Your Mumby property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Mumby specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Mumby property and budget. Most Mumby conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in Mumby 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 Mumby housing stock.
Living in a terraced or semi-detached house in Mumby? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your Mumby loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for Mumby properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified Mumby engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in Mumby homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Mumby loft.
Plastering, decorating, flooring, and interior design services to create beautiful Mumby living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout Mumby city centre, including period properties, modern homes, and conservation areas requiring specialist Mumby planning expertise.
Expert loft conversion services across all Mumby suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Mumby.
Specialist conversions for Mumby's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of Mumby conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
Mumby Loft Conversions Completed
Average Mumby Customer Rating
Years Serving Mumby
Mumby Building Control Approved
With over 15 years of experience in Mumby, we understand local planning requirements, building regulations, and architectural styles. Our Mumby team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Mumby terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern Mumby semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in Mumby conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"We hired them for a shell conversion in Mumby and were so impressed we asked them to complete the fit-out too. Five stars."
- Sarah Jenkins, Mumby
"The best decision we made for our Mumby house. The extra office space is perfect. Great attention to detail from the whole team."
- Michael Hughes, Mumby
"The neighbors are jealous, the kids are happy, and the house value went up. The trifecta! Best investment in Mumby."
- James Walker, Mumby
Loft conversion costs in Mumby vary based on type, size, and specifications. Typical Mumby 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 Mumby quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Mumby survey and detailed quote.
A transparent guide to typical conversion costs in the Mumby 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 Mumby properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the Mumby 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."
Get the extra space you need without the stress of moving. Expert advice for Mumby families.
Book Free Mumby Loft Survey