Luxury home extensions and personalised renovations where the flow of how your family lives comes first. As trusted builders in Hertfordshire, we manage every stage in-house — for a stress-free build, start to finish.

We aren't just builders; we are renovation specialists who put people first. We listen closely to how your family lives, ensuring every layout and material choice makes your life better. With Build Trust, you aren't just buying a build — you're buying total peace of mind.
Workmanship Warranty
Accredited Members
As builders in Hertfordshire, we cover everything from extensions and loft conversions to landscaping, driveways and roofing — one trusted contractor for the whole project.

Single & double-storey extensions that add light, space and value.

Full home transformations tailored to your lifestyle.

Turn unused loft space into a stunning new room.

Open-plan kitchens and living areas built for real life.
We provide you with a knowledgeable, consistent point of contact who is available to you every working day from 8am to 4pm, to answer questions promptly and help you make key decisions timely.
Wondering what your project might cost before you pick up the phone? Our quick estimate tool gives you a ballpark range in under a minute, no pressure, no obligation. It's a starting point to help you plan, and if you'd like a precise figure, we'll happily talk it through on a free home visit.
Answer three quick questions for an instant ballpark range - built on typical Hertfordshire build costs.
What type of extension?
Roughly how big?
Where’s the property?
Pop in your details and we’ll email a fuller cost breakdown for your project — no obligation, no hard sell.
We’ll only use your details to send your breakdown and follow up if you’d like. Unsubscribe anytime.
We combine creative vision with practical problem-solving. Most importantly, we listen — so you get a clear, realistic price and a detailed timeline, and never second-guess the budget.
Cost-effective solutions without compromising on a high-end finish.
No hidden costs or second-guessing. You receive clear timelines and honest answers.
Our tight-knit team of polite professionals deliver excellence in every detail.
Workmanship promise on every build
Live on-site design turnaround
Project-managed, start to finish
Workmanship promise on every build
Live on-site design turnaround
Project-managed, start to finish
Homeowners speak about their experience
Our team is on standby.
Transparency is our promise. To the right, we’ve addressed the most common questions our clients ask when planning a luxury renovation. For more specific guidance, our team is always ready to provide the honest answers you deserve.
Transparency is our promise; we provide realistic, fixed pricing based on a deep understanding of your goals before a single brick is laid. We focus on intelligent design and practical problem-solving to maximise your budget and avoid the "money pit" scenario common with standard builders.
Many clients come to us knowing how they want their home to feel, without necessarily knowing how to translate that into a finished design — that is completely normal. We ask the right questions to draw out what matters most: how you live, what you’re drawn to, what you want the space to solve, and what will feel right over time. By understanding both your practical requirements and your personal sense of style, we shape a design that feels considered, natural, and genuinely yours.
Any building project will bring some disruption; what matters is how well it’s managed. We plan each stage carefully, communicate clearly throughout, and take practical steps to protect your home, keep the site tidy, and reduce unnecessary inconvenience wherever possible.
We’re proud to be backed by TrustMark, the UK’s only Government-endorsed quality scheme for trades carried out in and around the home. We also provide a written warranty on materials and workmanship — and if a genuine workmanship issue comes to light years later, we’ll still return and put it right. Our reputation matters deeply to us, and so does the experience our clients have with us.
Because the experience matters just as much as the finished result. We combine high standards of workmanship with clear communication, thoughtful planning, and a genuinely attentive approach, so you feel informed, looked after, and confident throughout the project. For us, doing the job properly means being organised, considerate, and straightforward from start to finish.
Send a few details and we'll be in touch to arrange your consultation. Prefer a call? Hit "Relax — We'll Call You" and we'll do the rest.
+44 7480 777 253
25 Town Square, Stevenage, SG1 1BP
25 Town Square
Stevenage
SG1 1BP