At Horsham Builder, we provide a full range of building and home improvement services designed to add space, value and comfort to your property. Whether you’re planning a major transformation or a small upgrade, our experienced local team delivers reliable workmanship and a smooth, stress-free service from start to finish.
When your Horsham home no longer provides the space your family needs, a house extension offers the ideal solution. We design and build single storey, double storey, side return, and wrap-around extensions, managing every stage from initial design and planning applications through to construction and finishing. Whether you need a spacious kitchen-diner opening onto the garden, additional bedrooms and bathrooms above, or a dedicated home office, we deliver extensions tailored to your property and budget. Our team handles all trades in-house including structural work, bricklaying, roofing, plastering, electrics, and plumbing, so you deal with one team from start to finish. We build extensions across Horsham that complement the existing property and add genuine value to your home.
Transform unused roof space into valuable living accommodation without sacrificing garden space. We build dormer conversions for maximum headroom, Velux conversions for simpler projects, and hip-to-gable alterations for properties needing extra width. Horsham’s mix of housing suits loft conversions well—from Victorian properties near the town centre to 1930s semis across Trafalgar Road and modern homes throughout Broadbridge Heath. Our team handles structural calculations, building regulations applications, and all construction including electrics, plastering, and finishing. Most conversions complete within six to eight weeks with minimal disruption to daily life.
The kitchen is the room you use most and the one that makes the biggest impact on how your home feels. We install kitchens of all sizes and styles, handling everything from initial strip-out and structural alterations through to final finishing. Our service includes layout changes, plastering, tiling, flooring, plumbing, full electrical installation with dedicated appliance circuits, worktop sockets, and lighting. We work with any kitchen supplier and coordinate all trades so the project runs in the right sequence without delays. Whether you want a straightforward suite replacement in the existing layout or a full structural renovation creating open-plan living, we deliver a finished kitchen you’ll enjoy using every day. Professional kitchen installation across Horsham.
Not every project fits neatly into a single category, and that’s where our general building service comes in. We handle the kind of work that crosses trade boundaries — structural alterations, knocking through walls and fitting steels, garage conversions, porch builds, garden walls, patios, drainage work, and the countless jobs that need a combination of bricklaying, carpentry, plastering, and coordination. Whether it’s a straightforward repair, a structural modification, or a project that doesn’t have an obvious label, we approach it with the same professionalism and quality as our larger work. Having a broad skill set and experienced tradespeople across multiple disciplines means we can take on virtually any domestic building project across Horsham and deliver it to a high standard.
Create versatile extra space with a bespoke garden room. Whether you need a home office in Roffey, a gym in Southwater, or a studio in Storrington, we design and build garden rooms for year-round use. Full insulation, double glazing, electrical installation, and quality finishes throughout. We handle everything from groundwork and foundations to final fitting out. Most garden rooms fall under permitted development, avoiding planning delays. Transform your Horsham garden into valuable living space that works through every season whatever the Sussex weather brings.
Open up your Horsham home with expert structural alterations. We remove load-bearing walls and install steel beams to create open-plan living spaces, widen doorways, create new openings, and reconfigure layouts to suit modern family life. Every project is designed by qualified structural engineers and completed with full building regulations approval. We handle all temporary support, steel installation, and making good. Perfect for modernising Horsham’s Victorian and Edwardian properties into flowing contemporary homes while respecting their original character and period features.
Renovating a property is one of the most complex building projects you can undertake, and having the right builder makes the difference between a smooth transformation and a drawn-out headache. We carry out full and partial renovations across Horsham, from single-room refurbishments to complete house transformations. Our service covers structural alterations, new layouts, kitchen and bathroom installations, rewiring, replumbing, plastering, flooring, and decoration. We coordinate every trade, programme the work in the right sequence, and manage the surprises that inevitably come with opening up older properties. Horsham’s mix of period homes around the Causeway and newer housing in developments like Kilnwood Vale each present different challenges, and we have the experience to handle them all confidently.
We understand how homes in Horsham are built — from charming period cottages to modern new-builds. This local insight helps us design and deliver building work that fits your property, your needs and the way people live in Horsham. Every project is shaped around your space, your lifestyle and the character of your home.
Your home deserves work completed with accuracy, care and pride. We use proven construction techniques, reliable materials and a detail-driven approach to ensure long-lasting results. From structural work to finishing touches, our craftsmanship is consistent, dependable and built to stand the test of time.
From the first enquiry to the final handover, we keep things clear, honest and stress-free. You’ll always know what’s happening and when, with straightforward communication from a team that values reliability. Our goal is simple: a smooth experience and a result you’ll feel confident in for years to come.
We handle a full range of domestic building services including extensions, loft conversions, kitchen and bathroom refurbishments, garden rooms, structural alterations, and general building repairs.
Yes — we offer free, no-obligation quotations for all projects. We’ll visit your property, discuss your plans, and provide a clear, detailed estimate.
Absolutely. We carry full public liability and employer’s liability insurance, giving you complete peace of mind throughout your project.
Yes. We can guide you through the planning process, advise on local requirements, and work with architects or planning officers where needed.
Either works. We’re happy to collaborate with your architect or recommend trusted local architects we regularly partner with.
Yes. We regularly assist clients with planning applications, building control requirements and structural calculations, ensuring your project meets all regulations.
Yes. We oversee your entire build, coordinating trades, organising materials and ensuring everything is completed safely, efficiently and to a high standard.
We primarily serve Horsham, Southwater, Broadbridge Heath, Roffey, Warnham, Faygate, Mannings Heath, and surrounding West Sussex villages.
We’ll assess your space, discuss design ideas and explain what’s possible.