Garden City Carpentry and Building was established in 1983 by Tony Cartwright and is based in Letchworth Garden City, Hertfordshire. Tony and his team of expert builders provide fully managed carpentry and building services to both domestic and commercial clients, specialising in extensions and conversions.

"We are a fully insured family run company that combines professional services with a warm and friendly attitude. Getting the job done and making friends in the process. Happy days!"

Tony Cartwright - Managing Director
Tony Cartwright

Choose the service
that suits your needs. All work is guaranteed.

Baldock Renovation

Refurbishments & Renovations

No matter how big or small the project, the end result is always something to be proud of. We are able to take on full building renovations, including the following aspects:

  • Architecture & Design
  • Timber Framing
  • Brickwork
  • Doors & Windows
  • Roofing
  • Flooring


Our builders specialise in extensions, including:

  • Single storey extensions
  • Double storey extensions
  • Wrap-around extensions


We can convert that unused space into a valuable feature, such as:

  • Loft conversion
  • Garage conversion


Fully fitted kitchens tailored to requirements.



We are trained in many types of roofing installations:

  • Tiled
  • Single Ply
  • GRP Fibreglass
  • EPDM Rubber

Many more

While we do prioritise larger extension and conversion projects, our skills and partnerships enable us to tackle many additional services as part of these, such as:

  • Drainage
  • Underfloor Heating
  • Scaffolding
  • Painting and Decorating
  • Electrical, Gas and Plumbing
  • Professional post-build deep clean

Feedback from our partners and clients is always welcome

We were able to draw on the years of experience Tony brought to improve on the design along the way and can’t be more happy with the end result. We would proudly recommend Garden City Carpentry to anyone looking to secure their services.
Murray & Rita
It’s been a real pleasure working with Garden City Carpentry on this big project. Many thanks to Tony and his team for the opportunity to work with you.
Wren Decorating, Arlesey
I have years of experience using different builders and I would have absolutely no hesitation in recommending Tony Cartwright of Garden City Carpentry to anyone. You don't get many like him.
Rob Moss - Chevronics, Hitchin
We recently used Garden City Carpentry to convert our bungalow into a 4-bed detached house and we cannot recommend them enough. Tony and his team were professional and friendly throughout the 8 month project and we would not hesitate to use the team again for any future work he may have.
Steve and Becki - Baldock
Tony and Trevor completed a wrap around extension for us last year. The quality of build was very high and we have had others tradesmen come in and comment on the standard of the build. The team were always polite and friendly and our 3 year old daughter thought they were great.
Matt, Hitchin


  • gardencitycarpentry@hotmail.co.uk
  • 07961893636


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