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OUR SERVICES
Loft Conversions in Hertfordshire
Unlock the Space You Already Own
Build Trust is one of the loft conversion companies in Hertfordshire with the experience to handle every type from start to finish — dormer, hip-to-gable, Velux rooflight and mansard conversions. We manage structure, staircases, carpentry, plastering and all associated trades as one project. We serve homeowners across Welwyn Garden City, Hertford, Stevenage, Potters Bar, Cheshunt and Hitchin.
What We Create
Loft Space Turned Into Rooms You'll Love
Dormer & Hip-to-Gable
The right conversion type to maximise head height and usable floor space.
Bedrooms & En-Suites
Private, light-filled retreats tucked into the top of your home.
Offices & Studios
Quiet, characterful spaces to work, create or unwind — away from it all.
Why build Trust
More Home, Without Moving House
A loft conversion adds real space and value while you stay exactly where you love to be.
We handle structure, light and staircases so the new room feels like it was always part of the house — with planning, drawings and building regulations managed for you, and our signature live on-site design once the shell is complete. Loft conversion costs vary by type and size; we're always happy to visit and give you a realistic assessment.
Trusted & Accredited
Backed by the Industry's Highest Standards
Federation of Master Builders membership is earned through a vetting and inspection process — a recognised mark of quality, professionalism and proper standards. For you, it's added reassurance that you're working with a builder who takes both workmanship and client care seriously.
A Secure Process from Groundbreak to Handover
In line with our pragmatic, professional approach, we manage every technical detail to move you from planning to completion with ease:
1.
Intelligent Planning & Assessment
We evaluate your property's potential and coordinate with architects to ensure the design meets both aesthetic ambition and practical function.
2.
Dedicated Project Management
A dedicated lead keeps our team on schedule, maintaining a clean and respectful site that minimises disruption to your world.
3.
Rigorous Quality Handover
We conduct a final, comprehensive quality check before handing over the keys to a new space perfectly suited to your lifestyle.
10-Year
Workmanship promise on every build
Days
Days
Live on-site design turnaround
100%
Project-managed, start to finish
10-Year
Workmanship promise on every build
Days
Live on-site design turnaround
100%
Project-managed, start to finish
Real voices
Homeowners speak about their experience
Ready When You Are
Ready to Unlock Your Loft?
Our team is on standby. Book a no-obligation call and see what's possible for your loft.
FAQs
Transparency is our promise. We've addressed the questions clients ask most. For anything else, our team is a quick call away.
Is my loft suitable for a conversion?
Most are. It comes down to head height, roof structure and pitch — we assess all of this during your survey and tell you honestly what's possible.
How do you keep the project on budget?
We provide realistic, fixed pricing based on a deep understanding of your goals before work begins — no hidden costs.
How disruptive is the work?
Any project brings some disruption; what matters is how well it’s managed. We plan carefully, communicate clearly, and keep the site tidy throughout.
Are your works guaranteed?
Yes — we're TrustMark registered and FMB accredited, with a written 10-year workmanship promise on every build.
Get in Touch
Tell Us About Your Space
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
Extensions, renovations, and landscaping across Hertfordshire, managed by one team.
Location
25 Town Square
Stevenage
SG1 1BP