Business Details
17 Years
experience
Local Builders You Can Trust
S.T Contracts Ltd is a Watford-based, family-operated building company specialising in residential construction, renovation and conversion services. Since 2009, we have supported homeowners throughout St Albans and the wider Hertfordshire area with projects that demand precision, reliability and a professional approach. By keeping all trades in-house, we retain full control over quality, scheduling and on-site standards, removing the uncertainty often associated with subcontracted work. Our accreditations with recognised trade bodies reflect our commitment to best practice, transparency and long-term client confidence.We undertake a wide range of building works, including loft conversions, house extensions, garage conversions and custom-built garden rooms. Each service is designed to maximise existing space and enhance everyday living without unnecessary disruption. From the outset, we provide clear documentation, realistic timelines and visual designs to help clients understand the finished result before construction begins. Our team remains consistent throughout the project, delivering a full handover and detailed snagging review on completion. Fully insured and locally knowledgeable, we combine technical expertise with a straightforward, client-focused service that prioritises quality outcomes and lasting value.
Services
Building Services
Garden Rooms
Renovations
Solar Panels
Schools
Conversions/Extensions
Garage Conversions
Loft Conversions
House Extensions
Barn Conversions
Served areas
- St Albans, Radlett, Harpenden, Watford, Borehamwood, Bushey, Rickmansworth, Hemel Hempstead, Aldenham, Abbots Langley, Kings Langley, Potters Bar, Chorleywood, Berkhamsted, Hatfield
Details
- Year established: 2009
- Licensed
- Insured
Highlights and features
- We offer over 50 years of combined building experience in St Albans and Hertfordshire.
- Our team is fully insured with comprehensive public and employer liability cover.
- We provide free 3D design visualisations for all projects.
- All work is contracted with clear terms before commencement.
- We offer a six-month follow-up guarantee on all workmanship.
Associations and certifications
- Federation of Master Builders
- Guild of Master Craftsmen
Payment methods
- Bank transfers
Services
Garden Rooms
We build garden rooms from scratch to meet your exact brief, producing fully insulated, weather-tight spaces designed for long-term use. Our team oversees groundwork, construction and the final fit-out, including plastering, decoration and flooring. Where required, we install electrics, plumbing and heating, and we guide you through planning considerations while keeping costs clear and honest.
Home Renovations
We deliver bespoke home renovations, managing projects of all sizes with care and precision. As a family-run business with over two decades of experience, we undertake everything from single-room updates to complete property transformations. Our team provides a fully managed service, combining skilled workmanship with clear communication throughout every stage of the build.
Building Services
We deliver professional building services supported by 24 years of industry experience. Our team manages projects from initial planning through to completion, ensuring regulatory compliance and consistent quality. We undertake extensions, conversions, renovations and new builds, providing a reliable, well-organised service that produces durable results and a straightforward construction experience.
House Extensions
Our bespoke house extension service is designed to simplify the building process while maintaining high construction standards. We oversee design, planning assistance and on-site works through a single managed programme. Backed by long-standing experience, we deliver fully compliant extensions with dependable workmanship and thorough project supervision throughout.
Garage Conversions
We offer a tailored approach to garage conversions, creating practical rooms that enhance everyday living. Backed by long-standing experience in the building trade, we take responsibility for the entire build process. All conversions are completed to meet building regulations, with careful construction methods ensuring reliable, lasting results.
Solar Panels
We offer a complete solar panel installation service, covering both residential and commercial properties. Our experienced, MCS accredited team manages surveying, system design and installation with attention to detail throughout. Clients benefit from compliant systems, optional battery integration and a structured process delivered to professional standards.
Questions
What areas do S.T. Contracts serve?
We serve St Albans, Watford, Radlett, Bushey, Rickmansworth, Hemel Hempstead, and the wider Hertfordshire area within 25 miles of Watford.
Are S.T. Contracts fully insured?
Yes, we are fully insured with comprehensive public and employer liability cover for all our building projects.
What accreditations does S.T. Contracts hold?
We are members of the Federation of Master Builders and the Guild of Master Craftsmen, ensuring high standards of workmanship.
Do you offer free consultations?
Yes, we provide free consultations for all projects, including 3D design visualisations to help plan your building needs.
What types of building services do you offer?
We offer a wide range of services, including new builds, extensions, conversions, renovations, solar panel installations, and school construction projects.
How long has S.T. Contracts been in business?
We have been operating since 2009, with over 50 years of combined experience among our team members.
Reviews (5)
Tommy Floyd
Nov 17, 2024
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ST Contracts recently installed solar panels and built a bespoke garden room for us, and were absolutely delighted with the outcome. The team was professional, knowledgeable, and always kept us informed throughout the process. The solar panels have already started reducing our energy bills, and the garden room is now our favourite space beautifully designed and finished to the highest standard. Their attention to detail and commitment to quality really stood out. We highly recommend ST Contracts for anyone looking for reliable, top-quality workmanship.
Ally Sampson
Sep 09, 2024
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We are very happy with our garage conversion. We got a quick and fair quote and the work started quickly. They have been very professional, with good communication throughout, kept everything clean and tidy and completed the work in a very timely manner. We are extremely pleased with the end result and would highly recommend S.T Contracts.
Fran Barnett
Sep 02, 2024
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Stuart and his team put bi fold doors in my house, also converted a garage into a room. Absolutely excellent work, while the building was going on everything was kept neat and tidy. Brilliant team, nothing was too much trouble and everything was completed to the highest standard. My friends have also had Stuart and his team in and are all as happy and so pleased with all building work. I would highly recommend this company, the absolute best.
Rebecca Sharp
Aug 07, 2024
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Highly recommend.fantastic service from start to end. Absolutely over the moon with the work we had done
Aimee Vaughan
May 25, 2024
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had an extension put on my house, stuart was very respectful polite and even had banta which made it easy for us to get along with him, he done an amazing job would 100% recommend