Premium basement and cellar conversions across South Manchester and Cheshire — adding light-filled living space and lasting value to homes like yours.
Your request is in. We'll be in touch shortly — and if it's urgent, call us on 0800 802 1424.
In South Manchester and Cheshire, the space below your home is often the most cost-effective way to grow it — no lost garden, no planning battle, no compromise on the floors above.
A properly converted basement adds usable square footage — and meaningful resale value — to homes in sought-after postcodes.
Gain a gym, cinema, office, utility or guest suite without losing garden or extending outward.
Lightwells, proper tanking and insulation turn a damp cellar into a room you'll actually want to spend time in.
Certified waterproofing systems and an insurance-backed guarantee — done once, done right.
One specialist team for the whole project, from structural design to the final coat of paint.
Turn an existing cellar into a beautiful, dry, fully finished living space — designed by our CSSW team and built to completion.
New-build digs and structural basement construction where you want to create space from the ground up.
Cementitious and membrane tanking systems that keep water out and keep your new room reliably dry.
Approved Wykamol waterproofing and damp-proofing, designed to BS 8102 and backed by guarantee.
No surprises. You'll know what's happening at every stage — and what it costs — before we start.
We visit, assess the space and water conditions, and give you an honest, itemised quote — no pressure, no obligation.
Our certified surveyor designs the right waterproofing and structural approach for your specific basement.
Our insured, certified team carries out the work to BBA standards — tidily, on schedule, and with you kept informed.
Work is covered by an insurance-backed guarantee through the CGS scheme, so your investment is protected.
Basements are unforgiving — get the waterproofing wrong and you'll pay for it for years. We do this one thing, properly, and we stand behind it.
CSSW-certified design, CSCS-qualified team and IOSH/SMSTS-certified supervision on every site.
An approved Wykamol contractor — work is covered through the CGS guarantee scheme.
Working across Cheshire and South Manchester, with a track record of finished projects in the area.
“An outstanding effort on our recently completed project in Altrincham. An aggressive schedule, and it was completed on time. We'd certainly use them again.”Mitchel SmithAltrincham
“Excellent service, worth every penny — an amazing addition to our home. Thank you Select Basements, such a wonderful job.”Debora HiltonCheshire
“So pleased with the outcome. Family and friends are amazed — so much extra room now. Highly recommend!”Leanne HoldenBasement conversion
Based locally and working within around an hour of Manchester — including the areas below.
Tell us about your cellar and we'll come and take a look — with honest advice and a clear, itemised quote.
0800 802 1424