House Extensions in Horsham
House Extensions in Horsham
Create More Space, Add Value & Transform the Way You Live
A well-designed house extension is one of the most effective ways to unlock extra living space, increase your home’s value and enhance day-to-day comfort—all without the cost and hassle of moving.
We design and build single-storey, double-storey, side extensions, rear extensions, and wrap-around extensions, tailored to how you live and the style of your home.
Whether you want a bigger kitchen, extra bedroom, open-plan living area or a multifunctional family space, our experienced team brings your plans to life with expert craftsmanship and smooth project management from start to finish.
Our service covers the complete project from the first foundation trench to the final coat of paint, with one team managing groundwork, steelwork, brickwork, roofing, plastering, electrics, plumbing, and all finishing. Contact us to discuss extending your Horsham home.
House Extensions in Horsham
Single-Storey Extensions
Single storey rear extensions are our most popular choice for Horsham homeowners wanting additional ground floor space. They create room for spacious kitchen-diners, larger living areas, or dedicated home offices without the cost of building upward. Under permitted development, you can typically extend 3 metres from the original rear wall for attached houses or 4 metres for detached properties without planning permission. Properties across Roffey, Littlehaven, and Holbrook suit single storey extensions perfectly. We design extensions that maximise natural light through bi-fold doors and skylights.
Double-Storey Extensions
When you need both ground floor and first floor space, a double storey extension delivers excellent value. Building two storeys costs significantly less than separate single storey projects because foundations, walls, and roof are shared. Double storey extensions suit growing families needing larger kitchen-diners below with extra bedrooms or bathrooms above. These extensions typically require planning permission from Horsham District Council. Properties across Broadbridge Heath, Southwater, and Billingshurst often accommodate double storey extensions well. We design additions that complement your existing home seamlessly.
Wrap-Around Extensions
Wrap-around extensions combine rear and side extensions into one L-shaped structure, maximising the space gained from your project. This approach suits corner plots or properties where both side and rear extension are feasible. Wrap-around designs create the largest ground floor transformations, often doubling kitchen and living space. They require careful design to maintain natural light to existing rooms. Detached properties across Warnham, Rusper, and Slinfold often accommodate wrap-around designs beautifully. We plan extensions to work with your property’s specific characteristics and your family’s needs.
Kitchen Extensions
Transform your kitchen into the heart of your home with a purpose-built extension. Kitchen extensions create space for cooking, dining, and family life in one flowing area. We design layouts that work for modern living—space for islands, breakfast bars, and sociable cooking. Bi-fold doors connect indoor and outdoor living, flooding your new space with natural light. Properties across Horsham town centre, Denne, and surrounding areas benefit from kitchen extensions that modernise dated layouts. We handle all construction, plumbing, electrics, and finishing throughout.
Our 4-Step Extension Process
1. Free Site Visit & Consultation
We visit your home to discuss ideas, measure the space and explore layouts, budgets and planning requirements.
You’ll receive tailored advice based on your property and goals.
2. Detailed, Itemised Quote
Your quote includes all construction stages, materials, timelines and options—clear, transparent and easy to understand.
3. Professional Build & Installation
Our skilled team handles all construction, structural work, roofing, electrics, plumbing and finishing with care and precision.
4. Final Inspection & Sign-Off
You only sign off once you’re completely happy with the finished extension
More of our services
Garden Rooms & Outbuildings
Create extra space with a purpose-built garden room, office, workshop or insulated outbuilding. Designed around your home and lifestyle, our garden structures are durable, practical and finished to a high standard — perfect for work, hobbies or additional living space
Kitchen Renovations
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, plastering, plumbing, electrical installations, tiling, flooring, and precision fitting. We install kitchens from any supplier and coordinate every trade in sequence so the project moves without delays. From dated galley kitchens to full open-plan ground floor transformations with structural wall removal, we deliver results built to last.
Kitchen Renovations
Loft Conversions
Transform unused roof space into a master bedroom, home office, or additional bathroom without extending your footprint or losing garden. We carry out Velux, rear dormer, and hip-to-gable conversions across Horsham, handling structural steelwork, floor strengthening, insulation, staircase installation, electrics, plumbing, and finishing. Most conversions proceed under permitted development without a planning application. We manage the full project from structural assessment to final decoration, delivering a finished room that adds genuine living space and measurable value to your Horsham property.
Get a Free Extension Quote
Planning an extension in Horsham? Contact us today for a free, no-obligation quote from experienced local builders.