Kosta Sons Contractors Limited

What we do

Our services

Every job is managed directly by our directors, with the same team of tradespeople we have worked with for years. We handle small and large jobs alike, and we give a quote or estimate within two working days.

Lofts

Loft conversions

Turn unused roof space into a bedroom, office or bathroom. Dormer, hip-to-gable, L-shaped and mansard conversions, including the structural work, staircase, insulation, Velux windows and finishing. We work with your architect and structural engineer, or can introduce ones we trust.

Extensions

Rear, side and wrap-around

Open-plan kitchens and living spaces built from foundations up: groundworks, blockwork, steels, roofing, bi-fold doors, underfloor heating and the finish. Single or double storey, and the smaller side-return extensions that make a narrow kitchen work.

Renovation

Full refurbishments

Whole-house renovations managed start to finish: layouts opened up, new kitchens and bathrooms, plastering and coving, electrics, plumbing, doors, flooring and decoration. One contractor, one point of contact.

Roofing

New roofs and repairs

Pitched and flat roofs, re-roofing, lead work and repairs for houses and commercial buildings.

Structure

Structural work

Load-bearing walls removed, steel beams installed, chimney breasts taken out and large-scale reinforcement, built to your engineer's calculations and signed off with Building Control.

Commercial

Restaurants and offices

Fit-outs and refurbishments for restaurant owners, office and housing landlords, and public bodies. Our work includes projects for Westminster Council and Sanderstead United Reformed Church.

For professionals

Architects and designers

We want to work with architects and designers. We price from drawings, keep to the programme and keep you and your client informed throughout. If you have a project that needs a reliable building contractor, please do contact us.

For architects

How it works

From enquiry to handover

  1. Get in touch with what you have in mind; drawings if you have them.
  2. We visit, talk it through and send an estimate within two working days.
  3. Agree the scope, price and programme in writing.
  4. We build, with a named project manager and regular updates to you.
  5. Snagging, sign-off and handover.

Tell us about your project