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Home / Basement Conversions / Greater London

Basement Conversions in Greater London

Professional basement conversion across Greater London — free survey, fixed written quotes and guaranteed work.

Looking for basement conversion in Greater London? S&K Property Investments & Improvement is a trusted local team covering Greater London and the surrounding area.

We manage the whole project — design, trades and building control where needed — so you deal with one team. 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 Greater London 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 Greater London

We carry out basement conversion throughout Greater London, including Croydon, Bromley, Enfield, Barnet, Ealing, Harrow, Hounslow, Ilford and the surrounding villages.

CroydonBromleyEnfieldBarnetEalingHarrowHounslowIlfordRomfordKingston upon Thames

Basement Conversions in Greater London — FAQs

Can any cellar be converted?
Most existing cellars can be converted; creating a brand-new basement is a bigger structural job. We assess yours at survey.
Do basement conversions add value?
Done well, yes — usable dry space below ground can add significant value, especially in higher-value areas.
Can any cellar be converted?
Most existing cellars can be converted; creating a brand-new basement is a bigger structural job. We assess yours at survey.
Are you local to Greater London?
We are a West Midlands-based company covering Greater London and the wider region, so you get a responsive local service backed by a full team.
Is the quote for basement conversion in Greater London free?
Yes — we provide a free site survey and a fixed, itemised written quote with no obligation.

Ready to start? Call 0800 088 6341 or send an enquiry and we will arrange a convenient survey.

Basement Conversions in Greater London?

Call 0800 088 6341 or request a free survey and a fixed written quote for your basement conversion project in Greater London.

Call 0800 088 6341Request a quote
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