


Trowbridge, the Wiltshire county town, blends rural charm with urban convenience, and its mix of period and modern properties makes it a popular place for families to put down roots. Many Trowbridge homeowners believe it is preferable to improve the home they love rather than move as their family grows or requirements change.
As family-run building contractors, KL & Sons Building Services delivers house extensions, home renovations and structural alterations across Trowbridge and the surrounding area, including villages like Staverton, Hilperton, Southwick, North Bradley, Yarnbrook and West Ashton.
A house extension involves far more than new walls. A single-storey extension, double-storey extension or wraparound extension starts with foundations and brickwork, then adds the roof structure, drainage and glazing. Where the new space meets the existing structure, a structural opening and steelwork carry the load safely, and every stage must satisfy Building Regulations. Handled well, the result is extra living space that feels like part of the original house.
Smaller projects deserve the same care. Widening a doorway, removing a load-bearing wall or reconfiguring your internal layout are all structural alterations, so we plan the structural work first and schedule the other trades around it.
Our owners and managers handle project coordination themselves, supported by a carefully picked team of skilled sub-contractors: electricians, plumbers, carpenters, bricklayers, tilers and plasterers. That allows us to complete every stage of your building project in Trowbridge to a high standard, on time and on budget.

Kitchens and bathroom upgrades and refits are among the home improvements we are most often asked to carry out in Trowbridge.
A kitchen renovation is rarely just a case of installing new units: kitchen fitting can involve structural alterations to create an open-plan kitchen-diner, along with plumbing, electrical work, plastering, joinery and decorating. Because we coordinate those trades as one team, your kitchen installation runs as a single, joined-up project rather than a string of separate jobs.
If there is no room to extend outwards, consider going up or converting what you already have. A loft conversion, including a dormer conversion, turns unused roof space into a habitable bedroom, home office or en-suite, and typically involves steelwork, a new staircase, insulation and fire protection. A garage conversion turns an integral or attached garage into habitable space, with insulated floors and walls, ventilation, heating and electrics that meet Building Regulations.
Larger home renovation and property refurbishment projects bring together first fix and second fix trades, from plumbing and electrical work to plastering, carpentry and finishing.
We offer:
Starting a building project in Trowbridge is straightforward. Call our team to arrange a free site survey and consultation, where we assess your existing property and talk through what you have in mind.
If you are short on ideas or looking for inspiration, we will show you our portfolio of completed projects to help you find the right solution, whether that is an extra bedroom, a home office, more living space or a larger kitchen-diner.
Once your requirements are settled, we draw up a detailed specification and give you a fixed price quote, covering everything from foundations and structural work through to plastering and decorating. Depending on the project, your extension or conversion may also involve planning permission or permitted development checks, structural calculations and Building Control inspections, and we will explain what applies to your property at the survey stage.
With over 25 years of qualified building experience, we are Trading Standards approved through the Buy With Confidence scheme, TrustMark approved and members of the Federation of Master Builders. Together with our growing list of testimonials from satisfied customers, that is your assurance that we can be trusted to provide a reliable, responsible and professional approach to building work across Trowbridge, Wiltshire.
We are based near Devizes and are pleased to provide our services across Avebury, Calne, Corsham, Marlborough, Melksham, Pewsham, Lacock, Royal Wootton Basset, Salisbury Plain, Royal Wootton Bassett, Trowbridge, Chippenham, Durrington & Larkhill, Castle Combe, Tidworth and Westbury and surrounding areas.