Basement Conversions in Swansea

S&K Property Investments & Improvement provides professional basement conversion across Swansea, backed by a proper survey and a fixed written quote.

You get a straight assessment, a fair fixed price, and work carried out when we say it will be. A basement or cellar conversion creates space without touching your garden or roofline — ideal in areas where extending out or up is restricted. We convert and, where needed, lower and underpin cellars into dry, warm rooms with proper waterproofing.

Our basement conversions service in Swansea includes

• Structural waterproofing (tanking + cavity membrane)
• Sump, pump and drainage system
• Underpinning and lowering where required
• Insulation, damp control and ventilation
• Electrics, lighting and heating
• Full fit-out and building-control sign-off

Correct tanking and drainage is everything below ground, so we specify a full waterproofing system with a pump and membrane, then insulate, service and finish the space. Every job is designed with structural and building-control input.

Basement conversion across Swansea

We carry out basement conversion throughout Swansea, including Swansea, Morriston, Gorseinon, Sketty, Mumbles, Clydach, Pontarddulais, Gowerton and the surrounding villages.

Basement Conversions in Swansea — FAQs

Call 0800 088 6341 or request a free quote online and we will get straight back to you.