Extensions, kitchens and groundwork, done properly.

Everything under one roof — no chasing three different trades to finish one job.

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  Extensions & conversions

  Single and double storey, garage and loft conversions — plans to plaster.

  • Building
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  Kitchens & bathrooms

  Full fit-outs — from strip-out and first fix to tiling and the last trim.

  • Fit-out
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  Groundwork & drives

  Driveways, patios, drainage and foundations — dug, laid and levelled right.

  • Groundwork

A few we've finished lately. The work page lets you filter every job by trade and area — the photography below is stock, swap it for your own site photos before this goes live.

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  Rear kitchen extension

  Wickfield

  Single-storey rear extension with bi-folds and a flat roof lantern.

  • Extension
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  Full re-roof

  Marsh End

  Stripped, felted, battened and re-tiled with new leadwork.

  • Roofing
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  Block-paved driveway

  Wickfield

  Dug out, drained and laid in block paving with a new dropped kerb.

  • Groundwork

Why Keystone

• One team, start to finish

  The people who quote your job are the people who do it — no faceless subcontractors.

• A written quote you can hold us to

  Itemised and fixed before we start. If the job changes, you sign it off first.

• We leave it clean

  Waste taken away and the site swept — you get your home back, not a building site.