Best in class and quality regarding house extensions, garage conversions, for St Albans, and across the entire Hertfordshire region.


Garage Conversions, House Extension, St Albans, Hertfordshire.
Located in the heart of St Albans, Stag Builders of Hertfordshire is a trusted name in construction. As a family-run building firm, we take pride in delivering high-quality workmanship through our skilled builders in the Hertfordshire area. We are recognised as one of the premier construction companies in Hertfordshire, specialising in house extensions, garage conversions. We are committed to excellence in every project we undertake.
Local Builders.
As proud members of the Federation of Master Builders, we are inspected and have consistently delivered high-quality specialist building services in St Albans. Our expertise includes kitchen installations, kitchen extensions, garage conversions, bathrooms, roofing, patios, house renovations, and, foremost, home extensions. Property extensions in Hertfordshire are a significant aspect of our work, and we genuinely enjoy what we do.
Garage Conversions.

This dormant double garage in St Albans has been converted into a practical space. Garage conversion ideas are endless. They can create everything from functional home offices and inviting guesthouses to entertainment-ready theatres.
Bathrooms Installations

This bathroom in St Albans truly makes a striking impression! The large wall tiles showcase geometric patterns, bringing a lively element to a space that often craves a bit more character!
Specialist in home renovation, and garage conversions, for Hertfordshire.
Our customer services and customer satisfaction is well known throughout the county of Hertfordshire, thanks to the highly skilled tradesmen and builders we employ. We firmly believe that being a family-run business is central to our success.
We offer a wide range of construction services in St Albans, Hertfordshire, and are always happy to advise new customers. We hope that the photos and information on our website have given you an idea of what we have accomplished.
If you would like to obtain a quotation, please use the Contact Form or call the nearest telephone number to your location.
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St Albans: 01727 432 002,
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Hertford: 01992 691 690,
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Welwyn Garden City: 01707 512 510,
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Kings Langley: 01923 532 656
Site Visit Appointments
By scheduling an appointment for us to visit your property, we can gain a clearer understanding of your requirements. This allows us to provide you with a fixed-price quotation, ensuring you can budget with confidence.
Our building services encompass a variety of solutions to meet your needs. Check out the topics section on this page for answers to any questions you may have. We're here to help!
Topics
How much does a garage conversion cost in Hertfordshire
Hertfordshire builders home renovation.
Decorating services Hertfordshire
0% VAT on loft and floor insulation
Plastering and exterior rendering St Albans
If estimates are free, why do quotes cost ?
Payment options
Builders based in St Albans
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Property Extensions
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K Rend Exterior Wall Rendering
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Garage Conversion
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Loft Conversion
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Home Renovation
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Carpentry
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Painting and Decorating Services
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Kitchen Installations
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Plasterboard and Plastering Services
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Loft & Home Insulation
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TV Media Walls
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And many other building services
Skilled builders that cover Hertfordshire...
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We enjoy home construction projects
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First-class aftercare service
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All our work is guaranteed
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Federation of master builders
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Trust Marked
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Our quotations are fixed-priced
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Hertfordshire Based
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St Albans
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Hertford
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Ware
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Welwyn Garden City
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Bishop's Stortford

Kitchen Installation
We are not just any old kitchen installer, but the leading kitchen supplier and installer in St Albans, Hertfordshire. We employ skilled kitchen fitters to carry out all aspects of kitchen installations in the Hertfordshire region.

Loft Conversions.
A spacious and expansive loft conversion located in St Albans, Hertfordshire, complete with a newly installed-suite bathroom.
Construction Companies Hertfordshire
Since the COVID-19 pandemic, our clients in Hertfordshire are requesting for "Garage conversion ideas"
We've observed increased inquiries from individuals seeking extra rooms or spaces to serve as permanent home offices. Additionally, there's been an unusual surge in calls for planning applications for rear single-storey house extensions in existing properties and converting garages into small offices across the Hertfordshire region.