The space above your ceiling is one of the most valuable parts of your home — and in most Horsham properties, it’s doing nothing more useful than storing suitcases and boxes of things you forgot you owned. A loft conversion transforms that unused roof void into a genuine additional floor, adding a bedroom, bathroom, home office, or whatever room your household needs most, without extending your footprint or losing a metre of garden.
We design and build loft conversions across Horsham, handling every stage from initial structural assessment through to finishing and certification. Velux conversions that work within the existing roof shape, rear dormers that dramatically increase usable floor area, and hip-to-gable conversions that reclaim the space lost to sloping side roofs — we build them all and manage every trade involved in delivering a completed room.
Our service covers the full project. We coordinate structural steelwork, floor strengthening, dormer or gable construction, insulation, staircase installation, electrics, plumbing for ensuites and bathrooms, plastering, flooring, and decoration. You deal with one team from the first steel beam to the final coat of paint, with clear communication and transparent pricing throughout. Contact us to discuss converting the loft at your Horsham home.
A Velux conversion is the most straightforward and affordable route to converting your loft. The existing roof structure stays unchanged — no dormers, no external alterations — with natural light provided by Velux roof windows fitted into the existing slope. The work involves strengthening the floor to habitable standard, installing insulation throughout, building the staircase, and fitting out the interior with electrics, plastering, and decoration. Velux conversions suit lofts with adequate existing headroom — typically a minimum of 2.2 metres from the ceiling joists to the ridge. Many of Horsham’s detached and semi-detached properties across Roffey, Littlehaven, and the established streets around the town centre have roof spaces with sufficient height for this approach. The quickest and most cost-effective conversion type.
A rear dormer extends the roof outward at the back of the property, creating a flat-roofed structure that dramatically increases both the usable floor area and the headroom. Where a Velux conversion limits you to the space under the existing roof slope, a dormer provides vertical walls and a flat ceiling across the extended section, making the room feel like a proper additional storey rather than a converted attic. Full-width rear dormers are the most popular option across Horsham because they transform the entire loft into one spacious room with consistent headroom throughout. Most rear dormers proceed under permitted development without a planning application, keeping the process straightforward and the timeline shorter than projects requiring planning approval.
Many of Horsham’s semi-detached houses — particularly those built from the 1930s through to the 1970s across areas like Roffey, Holbrook, and Trafalgar — feature hipped roofs where the side slopes inward rather than meeting a vertical gable wall. This hip significantly reduces the usable loft space. A hip-to-gable conversion extends the side wall vertically up to the ridge line, replacing the sloping hip with a flat gable end and reclaiming the space that was previously lost. Combined with a rear dormer, a hip-to-gable conversion creates the most spacious possible loft room from the available roof structure. The gable gives you width, the dormer gives you depth, and together they deliver a room that genuinely transforms the property.
Most loft conversions across Horsham include an ensuite bathroom or shower room, and the combination of an additional bedroom with its own private bathroom is what makes the conversion such a valuable addition. The main challenge is routing supply and waste plumbing to the roof space — particularly the soil stack connection that handles the toilet and shower waste. We plan the plumbing routing during the design stage, ensuring the waste falls are adequate and the soil connection is achievable without compromising the rooms below. We install loft ensuites from compact shower rooms in the eaves space to full bathrooms with baths where the room allows, handling all plumbing, tiling, waterproofing, and fitting as part of the conversion programme.
A loft conversion involves structural work that fundamentally changes how your roof supports itself. The steelwork needs specifying correctly, the floor needs strengthening to habitable standard, fire safety provisions must meet Building Regulations, and every trade needs coordinating in the right sequence to deliver a finished room rather than a half-completed project. Getting this right demands experience, structural understanding, and the project management to keep everything moving.
We provide detailed quotes covering every element — structural steelwork, dormer or gable construction, insulation, staircase, electrics, plumbing, plastering, flooring, decoration, and building control fees. You see exactly what’s included and what it costs before work begins. No vague estimates and no surprises during the build.
We carry out loft conversions throughout Horsham and the surrounding West Sussex area, covering the town centre, Roffey, Littlehaven, Holbrook, Trafalgar, Broadbridge Heath, Southwater, Billingshurst, Pulborough, Storrington, Henfield, Steyning, and surrounding villages.
Your kitchen works harder than any other room, and a well-planned renovation transforms how you use it every day. We carry out complete kitchen projects across Horsham, handling strip-out, structural modifications for open-plan layouts, plastering, plumbing, electrical installations, tiling, flooring, and precision fitting. We install kitchens from any supplier and coordinate every trade in the right sequence. If you’re converting the loft and renovating the kitchen at the same time, having one team manage both means the trades already on site move between projects without scheduling gaps or coordination issues.
If your garage stores everything except a car, converting it into a habitable room delivers living space at a fraction of extension costs. We transform integral and attached garages across Horsham into bedrooms, offices, playrooms, and annexes. The work covers structural modifications, insulation, damp proofing, flooring, electrics, heating, plastering, and complete finishing. A garage conversion on the ground floor paired with a loft conversion above gives your Horsham home additional space at both ends of the house without building outward at all. Most conversions complete within three to four weeks.
From single-room refurbishments to whole-house transformations, we handle building work that crosses trade boundaries. Our service covers structural alterations, wall removal, layout reconfiguration, rewiring, replumbing, plastering, flooring, and decoration. We also build garden rooms, carry out external work including patios and garden walls, and handle the general building projects that need a builder with broad capabilities. A loft conversion often forms part of a wider renovation — converting the roof while updating the rest of the house — and having one team manage the full scope keeps everything coordinated and on programme.
Considering a loft conversion? Contact us today for a free, no-obligation quote from experienced Horsham builders.