Professional house extensions in Swindon including rear, side and double-storey builds. Trusted local builders with full project management.
House extensions are one of the most effective ways to add space and long-term value to your home. At Swindon Builders, we design and construct extensions that are tailored to your property, lifestyle and budget, ensuring the new space feels like a natural part of the original home.
An extension adds the space your family needs while keeping you exactly where you want to be. The established community you’ve grown to love, the school catchment you chose carefully, the neighbours who’ve become genuine friends—none of that changes. You simply gain more room to live comfortably together.
We design and build house extensions across Swindon and surrounding Wiltshire. From modest single storey additions creating breathing room to substantial double storey builds transforming family homes entirely, we deliver extensions tailored to your property, your requirements, and your budget throughout.
We work across Swindon, Old Town, Wroughton, Stratton, Haydon Wick and Royal Wootton Bassett, delivering high-quality extensions for growing families and homeowners seeking more usable space.
Single storey rear extensions remain our most requested project across Swindon and the surrounding area. They create generous kitchen-diners where families gather daily, spacious living areas flooded with natural light throughout the day, dedicated home offices away from household bustle and interruption, or utility spaces freeing up room elsewhere in the house. Bi-fold doors connect new spaces to gardens, bringing Wiltshire light deep into your home throughout every season. Roof lanterns add drama and brightness overhead, transforming how spaces feel entirely. Under permitted development rules, you can typically extend three metres from attached houses or four metres from detached properties without planning permission—larger extensions remain possible through prior approval with Swindon Borough Council. Properties across Old Town, Wroughton, and Highworth regularly transform through single storey additions that change daily life completely.
When ground floor space alone won’t suffice, building upward delivers exceptional value for growing families needing comprehensive additional accommodation. Double storey extensions provide living accommodation below with bedrooms or bathrooms above, using the same foundations and roof to serve two floors efficiently throughout. Cost per square metre drops significantly compared to building equivalent space separately as two distinct projects at different times. Growing families gain kitchen-diners for togetherness plus bedrooms for privacy—both within one comprehensive project completed together. Double storey builds typically require planning permission from Swindon Borough Council and careful design considering neighbour impact and light to adjacent properties, but deliver maximum additional accommodation effectively. Properties across Stratton, Haydon Wick, and Blunsdon suit double storey extensions addressing both living space and bedroom requirements simultaneously.
Wraparound configurations combine rear and side extensions into L-shaped additions maximising transformation potential entirely within one project. Where properties have both rear garden depth and side access available, wraparound designs create the most dramatic ground floor changes possible—sometimes doubling usable living space in a single comprehensive build. Kitchens, dining areas, and living zones flow together in configurations impossible within original footprints, creating the open-plan living modern families desire throughout daily life. Careful design maintains natural light to existing rooms while creating bright, contemporary spaces revolutionising how homes function. Properties on corner plots or those with generous side passages suit this approach particularly well throughout Swindon. We design wraparound extensions respecting your property’s character while delivering expansive spaces families love.
Victorian and Edwardian properties across Swindon—particularly around Old Town and the Railway Village—often feature narrow side returns, those wasted passages running alongside rear projections originally housing outside toilets or coal stores decades ago. Extending into this neglected strip adds crucial width to cramped rear rooms without significantly impacting garden space or depth at all. Combined with modest rear extension, side return builds transform narrow galley kitchens into generous open-plan areas where cooking, dining, and family life happen together comfortably throughout the day. Period properties around Swindon town centre, throughout Lawn, and across historic Wiltshire villages commonly suit this approach effectively. We design side return extensions preserving natural light to adjacent rooms while maximising every centimetre of recovered space.
Extensions represent significant investments—choosing the right builder determines whether that investment delivers lasting value or ongoing headaches for years to come. We’ve completed extensions across Swindon for fifteen years, building expertise spanning every property type, ground condition, and design challenge the area presents throughout our experience.
Wiltshire properties present particular considerations requiring genuine local knowledge. Clay soils common across parts of the region affect foundation requirements significantly. Older properties around Old Town and the Railway Village reveal surprises once work begins requiring experienced problem-solving abilities. Conservation area restrictions in historic villages demand sensitive design approaches respecting local character. Experience navigating these challenges means fewer problems and better solutions for your project throughout.
We handle everything extensions require—planning applications with Swindon Borough Council, building regulations submissions, structural engineering coordination, groundwork, construction, roofing, windows, plastering, electrics, plumbing, and finishing throughout. One team managing every element ensures nothing falls between gaps and accountability stays clear.
We build house extensions throughout Swindon and surrounding areas including Old Town, Lawn, Wroughton, Highworth, Wootton Bassett, Stratton, Haydon Wick, Blunsdon, Chiseldon, Purton, Cricklade, and surrounding Wiltshire villages. Contact us for a free consultation and quotation.
Create a high-quality, fully insulated garden room designed for year-round use. Ideal as a home office, gym, studio or quiet retreat, our garden rooms are built to suit your space, lifestyle and budget.
We manage the full build from base and structure through to electrics, insulation and finishing — delivering a durable, comfortable space that adds real value to your home.
Turn unused loft space into a bright, practical living area with a professionally built loft conversion. Whether you’re adding a bedroom, home office or en-suite, we handle the full process from structural work to final finishes.
Our loft conversions include insulation, electrics, staircase installation and all required building work, ensuring a safe, compliant and well-designed space that integrates seamlessly with your home.
Expand your home with a carefully planned house extension built around your needs. From single-storey and double-storey extensions to wraparound designs, we create additional space that feels like a natural continuation of your property.
We manage every stage of the build — foundations, structure, roofing, glazing and finishes — delivering a long-lasting extension that improves layout, comfort and overall property value.