


Looking to Expand Your Living Space?
S.T Contracts Ltd is your trusted home extension specialist, helping homeowners maximize space, increase property value, and create modern, open-plan living areas. From rear and side extensions to wrap-around and multi-storey additions, we tailor every project to your needs.
Custom Design
We collaborate with you to design an extension that maximises space and functionality while enhancing the aesthetic appeal of your home.

Our skilled team ensures that every detail of your extension is executed to the highest standards.

We build extensions that blend effortlessly with your existing home, creating a cohesive and harmonious living space.

Our Home Extension & Building Services
Design and Build
From concept to completion, we bring your vision to life with expert craftsmanship.
Seamlessly add extra space to your property while maintaining its style and structure.
Transform your home with modern, functional upgrades that enhance your living space.
We specialise in creating beautiful bespoke garden rooms that enhance the value and functionality of your home or commercial property.
Upgrade kitchens, bathrooms, and interiors with our expert carpentry and design services.
Install new flooring and ceilings to refresh the interior of your home.
Our Home Extension & Building Services
Design and Build
From concept to completion, we bring your vision to life with expert craftsmanship.
Seamlessly add extra space to your property while maintaining its style and structure.
Transform your home with modern, functional upgrades that enhance your living space.
We specialise in creating beautiful bespoke garden rooms that enhance the value and functionality of your home or commercial property.
Upgrade kitchens, bathrooms, and interiors with our expert carpentry and design services.
Install new flooring and ceilings to refresh the interior of your home.
About Us
S.T Contracts Ltd is a specialist in home extensions, with over 15 years of experience delivering high-quality construction services across Radlett, St. Albans, Watford, Chorleywood, Harpenden, and The Chalfonts.
We pride ourselves on offering a personalised, hands-on approach to home improvements—unlike larger firms that treat projects as just numbers. We work closely with you to design and build a bespoke extension that seamlessly integrates into your home.
Serving: Serving homes within a 15-20 mile radius.
Consultation Hours: 08:00 - 17:30


15+ Years of Experience: Established in 2009, our extensive knowledge ensures high-quality results.
Certified & Skilled Team: Our experts hold City & Guilds qualifications in plastering, carpentry, and brickwork, along with SMSTS site management, first aid, DBS checks, and CSCS certification.
Tailored Designs: Every project is customised to enhance your home and lifestyle.
End-to-End Project Management: We handle everything from concept to completion, ensuring a smooth process.
Attention to Detail: We go the extra mile to deliver precision and excellence.


What to expect from a site visit
When you book a consultation with us, we:
Discuss your goals and project requirements.
Offer expert design suggestions and ideas.
Conduct a full property survey to identify any potential issues.
Provide a brochure showcasing our past projects and services.
A no-obligation cost breakdown tailored to your home extension project.






Frequently Asked Question
The average project duration ranges from 2 to 6 months, depending on the complexity and scale of the work. We provide a detailed timeline after the initial consultation.
Yes! We provide free, no-obligation consultations where we discuss your project, offer expert advice, and conduct a property survey before preparing a quotation.
Are your workers qualified and certified?
Absolutely! Our team holds City & Guilds qualifications in plastering, carpentry, and brickwork, as well as SMSTS site management, first aid, DBS checks, and CSCS certification.
What areas do you cover?
We serve clients in Radlett, St. Albans, Watford, Chorleywood, Harpenden, The Chalfonts, and surrounding areas within a 15-20 mile radius.
Can you help with design and planning?
Yes! We offer design suggestions and planning insights during our consultations to help you make the best use of your space.
Do you handle all aspects of construction?
Yes, we provide end-to-end project management, handling everything from groundwork and structural work to final finishes, ensuring a smooth and seamless process.
What materials and finishes do you use?
We use high-quality materials and ensure all finishes are completed to the highest standards. We also accommodate specific material preferences based on your design goals.
Can I see examples of your past projects?
Yes! We showcase completed projects in our brochure, and you can also view our work on our Instagram and Google Reviews section.
What Our Customers Have to Say

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