Quality you can see, service you can trust. We are dedicated to delivering the best loft conversions in Andover, on time and on budget.
Get Your Free Andover QuoteSee what your Andover neighbours say about our loft conversion work.
"They managed the party wall agreement with our Andover neighbors professionally. The whole street was impressed with their cleanliness."
"High-end finish on our mansard extension. The carpentry and plastering work in our Andover home is flawless."
"Exceptional value for money. We got quotes from three Andover firms and Building Group offered the best spec for the price."
"Top quality dormer conversion. Added significant value to our Andover property. Friendly team and very clean working environment."
"Finally, a builder who turns up when they say they will! Restored my faith in tradesmen. Top job in Andover."
"We were worried about the disruption, but the team at Building Group were incredibly considerate of our home in Andover."
See more genuine Andover customer reviews and loft conversion project galleries.
Read More ReviewsTransform your Andover 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 Andover, we create bespoke solutions tailored to your lifestyle.
Our experienced Andover team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Andover conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your Andover property to maximize space and value
The most cost-effective option for Andover properties using roof windows for natural light. Perfect for Andover homes with adequate headroom.
Add valuable floor space and headroom to your Andover property with single or multiple dormers. Popular choice in Andover for space optimization.
Transform sloping hip roofs into vertical gable walls in your Andover home, significantly increasing usable floor space. Ideal for Andover semi-detached properties.
The premium option for Andover properties creating maximum space with near-vertical walls. Perfect for period properties in Andover.
Your Andover property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Andover specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Andover property and budget. Most Andover conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in Andover 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 Andover housing stock.
Living in a terraced or semi-detached house in Andover? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your Andover loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for Andover properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified Andover engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in Andover homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Andover loft.
Plastering, decorating, flooring, and interior design services to create beautiful Andover living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout Andover city centre, including period properties, modern homes, and conservation areas requiring specialist Andover planning expertise.
Expert loft conversion services across all Andover suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Andover.
Specialist conversions for Andover's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of Andover conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
Andover Loft Conversions Completed
Average Andover Customer Rating
Years Serving Andover
Andover Building Control Approved
With over 15 years of experience in Andover, we understand local planning requirements, building regulations, and architectural styles. Our Andover team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Andover terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern Andover semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in Andover conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"They managed the party wall agreement with our Andover neighbors professionally. The whole street was impressed with their cleanliness."
- William Turner, Andover
"High-end finish on our mansard extension. The carpentry and plastering work in our Andover home is flawless."
- William Turner, Andover
"Exceptional value for money. We got quotes from three Andover firms and Building Group offered the best spec for the price."
- Daniel Evans, Andover
Loft conversion costs in Andover vary based on type, size, and specifications. Typical Andover 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 Andover quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Andover survey and detailed quote.
A transparent guide to typical conversion costs in the Andover 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 Andover properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the Andover 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."
Four recent loft conversions across the UK — from a London mansard within a conservation area to an L-shaped Manchester dormer, a Birmingham hip-to-gable, and a Leeds rear dormer. Tap any project for the full case study.
Loft
Mansard loft conversion on a London Victorian terrace within a conservation area — full mansard build raising the rear roof line, slate-clad cheeks to match the neighbours, two double bedrooms with private en-suites, and a sky-lit landing. Approval secured under full planning, not Permitted Development.
Loft
L-shaped rear dormer loft conversion on a Victorian terrace — turning unused roof space into two double bedrooms and a shared en-suite, with two Velux windows to the front, a glass balustrade to the new staircase, and matching slate-grey finish to blend with the original roof.
Loft
Rear dormer loft conversion turning unused roof space into a master bedroom and en-suite, with two Velux roof windows to the front and a slim glass balustrade to the new staircase.
Loft
Hip-to-gable conversion with rear dormer on a 1930s semi-detached — squaring off the original hipped roofline to gain full standing headroom, creating a master bedroom with built-in wardrobes and a generous en-suite, plus a third Velux to the front for natural light.
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View All Case StudiesQuality craftsmanship, guaranteed. Book your free structural survey in Andover with Building Group.
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