With property prices in Harrow and across London continuing to rise, converting your loft is a smart way to gain the extra space you need without the expense and upheaval of moving. Apex UK Roofing provides a full loft conversion service, handling every aspect from structural engineering and planning applications to roofing, plastering, and electrics.
A loft conversion involves transforming the unused roof space of your home into habitable rooms, typically bedrooms with en-suite bathrooms, home offices, playrooms, or additional living space. The main types of loft conversion we carry out in Harrow include Velux (rooflight) conversions, which add roof windows without changing the roof structure and usually fall under permitted development; dormer conversions, which extend out from the existing roof slope to create additional headroom and floor space; hip-to-gable conversions, which extend the sloping hip end of a roof to create a vertical gable wall and significantly more usable space; and mansard conversions, which replace one or both roof slopes with a near-vertical wall and flat top, providing the maximum possible space gain.
Our service is comprehensive: we handle structural engineering calculations, planning applications and Building Regulations submissions, all structural steelwork and carpentry, roofing work including new tiles, slates, and leadwork, dormer construction, staircase installation, insulation to current standards, electrics, plumbing, plastering, and decoration. For properties in Harrow, where a suburban borough in north-west London known for its Metroland housing of the 1920s-30s, many of which retain their original tiled roofs requiring careful maintenance, we have extensive experience with the local housing stock and understand which conversion types work best for different property styles.
We visit your Harrow home to assess whether your loft is suitable for conversion, measuring headroom, studying the roof structure, and discussing your requirements and ideas.
Our designers create detailed plans and 3D visualisations of your conversion, handle any planning applications, and submit Building Regulations documentation including structural calculations.
We install steel beams, construct dormers or gable extensions, carry out all roofing work including new tiles, leadwork, and insulation, and build the new staircase access.
We complete all electrics, plumbing, insulation, boarding, plastering, and internal finishing, including en-suite installation, built-in storage, and Velux windows with blinds.
Building Control carries out a final inspection, we complete snagging and clean-up, and hand over your beautiful new living space complete with all certificates and warranties.
From initial design to final decoration, we manage every aspect of your loft conversion so you deal with a single company throughout.
Our team includes experienced structural engineers who design safe, building-regulation-compliant conversions for every property type.
A well-designed loft conversion typically adds 15 to 20 percent to your property value, making it one of the best home improvement investments.
We work predominantly from the outside in, meaning most of the noisy structural work happens in the roof space rather than through your living areas.
Many loft conversions in Harrow fall under permitted development rights and do not require planning permission, particularly Velux and rear dormer conversions that stay within specific size and position limits. However, if your property is in a conservation area, is listed, or if the conversion involves a front-facing dormer or significant changes to the roof shape, planning permission will be needed. We handle all planning submissions and can advise you on what applies to your specific property in London during our free feasibility assessment.
Loft conversion costs in Harrow depend on the type of conversion and the specification. As a guide for London: a Velux (rooflight) conversion typically costs between 20,000 and 35,000 pounds; a dormer conversion costs between 35,000 and 55,000 pounds; a hip-to-gable with rear dormer costs between 45,000 and 65,000 pounds; and a mansard conversion costs between 55,000 and 75,000 pounds or more. These include full structural work, roofing, staircase, en-suite plumbing, electrics, and finishing. We provide detailed, itemised quotations after our free site assessment.
A typical loft conversion in Harrow takes between six and twelve weeks from start to completion, depending on the type and complexity. Velux conversions are the quickest at around five to seven weeks. Dormer conversions usually take eight to ten weeks. Hip-to-gable and mansard conversions may take ten to twelve weeks. We provide a detailed project schedule before work begins and keep you informed of progress throughout. Most of the disruptive structural work is concentrated in the first two to three weeks.
Yes, a well-executed loft conversion is consistently one of the best investments you can make in your Harrow property. Adding a bedroom with en-suite typically increases your home value by 15 to 20 percent, which in the London property market often represents a significant return on the cost of the conversion. Estate agents consistently rank loft conversions as the most desirable home improvement for buyers. The key is quality of design and finish, which is our focus on every project.
