Expert loft conversions in Harlow. From dormer and hip-to-gable to mansard conversions, our specialists create stunning living spaces tailored to your needs.
Get Your Free Harlow QuoteSee what your Harlow neighbours say about our loft conversion work.
"We were worried about the disruption, but the team at Building Group were incredibly considerate of our home in Harlow."
"The structural work was done quickly and safely. As a Harlow local, I appreciated their knowledge of local planning rules."
"I was expecting dust everywhere, but they left my Harlow house cleaner than they found it. Wizards, not builders!"
"Fantastic loft conversion in our Harlow home. The team was professional, tidy, and finished on time. Our new master bedroom with ensuite is stunning."
"Finally, a builder who turns up when they say they will! Restored my faith in tradesmen. Top job in Harlow."
"I used to hit my head on the rafters. Now I can do jumping jacks in my new Harlow bedroom. Incredible transformation."
See more genuine Harlow customer reviews and loft conversion project galleries.
Read More ReviewsTransform your Harlow 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 Harlow, we create bespoke solutions tailored to your lifestyle.
Our experienced Harlow team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Harlow conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your Harlow property to maximize space and value
The most cost-effective option for Harlow properties using roof windows for natural light. Perfect for Harlow homes with adequate headroom.
Add valuable floor space and headroom to your Harlow property with single or multiple dormers. Popular choice in Harlow for space optimization.
Transform sloping hip roofs into vertical gable walls in your Harlow home, significantly increasing usable floor space. Ideal for Harlow semi-detached properties.
The premium option for Harlow properties creating maximum space with near-vertical walls. Perfect for period properties in Harlow.
Your Harlow property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Harlow specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Harlow property and budget. Most Harlow conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in Harlow 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 Harlow housing stock.
Living in a terraced or semi-detached house in Harlow? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your Harlow loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for Harlow properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified Harlow engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in Harlow homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Harlow loft.
Plastering, decorating, flooring, and interior design services to create beautiful Harlow living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout Harlow city centre, including period properties, modern homes, and conservation areas requiring specialist Harlow planning expertise.
Expert loft conversion services across all Harlow suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Harlow.
Specialist conversions for Harlow's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of Harlow conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
Harlow Loft Conversions Completed
Average Harlow Customer Rating
Years Serving Harlow
Harlow Building Control Approved
With over 15 years of experience in Harlow, we understand local planning requirements, building regulations, and architectural styles. Our Harlow team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Harlow terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern Harlow semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in Harlow conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"We were worried about the disruption, but the team at Building Group were incredibly considerate of our home in Harlow."
- Robert Smith, Harlow
"The structural work was done quickly and safely. As a Harlow local, I appreciated their knowledge of local planning rules."
- Mark Thompson, Harlow
"I was expecting dust everywhere, but they left my Harlow house cleaner than they found it. Wizards, not builders!"
- Karen Clarke, Harlow
Loft conversion costs in Harlow vary based on type, size, and specifications. Typical Harlow 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 Harlow quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Harlow survey and detailed quote.
A transparent guide to typical conversion costs in the Harlow 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 Harlow properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the Harlow 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.
Want to see the rest of our portfolio?
View All Case StudiesMore room for activities? Yes please! Get your free quote for the ultimate Harlow man-cave or she-shed.
Book Free Harlow Loft Survey