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Builders in Hertfordshire for Extensions & Renovations

House extensions, loft and garage conversions, kitchens and new builds in Hertfordshire, handled by one experienced team from Hemel Hempstead.

Get a free quote Call 01442 976 112
Newly built semi-detached house with timber cladding and a paved driveway Bright bedroom with a new uPVC window Open-plan room with oak flooring and sliding doors to the garden White kitchen with an island hob and chimney extractor

Need a builder in Hertfordshire? Call us on 01442 976 112

Last reviewed: by R Gabriel Carpentry & Builders

R Gabriel Carpentry & Builders are builders in Hertfordshire, working from our base in Hemel Hempstead. We build house extensions, loft and garage conversions, new homes and kitchens, and manage every trade ourselves, from groundwork to the final coat of paint. Call 01442 976 112 for a free, no-obligation written quote.

At a glance

Who
R Gabriel Carpentry & Builders
What
Builders: extensions, loft and garage conversions, kitchens, renovations and new builds
Where
Hertfordshire, England
Experience
Over 30 years
How to book
Call 01442 976 112, WhatsApp 07799 800 880 or use our contact form

What building work do we take on in Hertfordshire?

Our builders in Hertfordshire take on most kinds of home building work, from a single room to a complete new house. The projects we're asked for most are:

See our full list of building services, or browse photos of recent projects in our project gallery. For other work, see our pages on construction in Hertfordshire and carpentry in Hertfordshire.

Knowing the homes of Hertfordshire

Hertfordshire is our home county. We work most often in west and central Hertfordshire, from Tring and Berkhamsted through Hemel Hempstead, St Albans and Watford to Hatfield and Welwyn Garden City. Homes across Hertfordshire include new town housing in Hemel Hempstead, Stevenage and Hatfield, Victorian terraces in the market towns, 1930s Metro-land homes in the south-west and period cottages in the villages.

Post-war houses here often have good-sized gardens and straightforward layouts, which suit single-storey rear extensions and open-plan kitchen-diners. Victorian and Edwardian homes often suit side-return extensions and rear-dormer loft conversions, and their solid walls need careful detailing where old meets new. 1930s semi-detached houses are classic candidates for hip-to-gable loft conversions and wraparound rear extensions.

Large open-plan room with an oak floor and sliding patio doors – an example of the work our builders in Hertfordshire take on
Example of our work: large open-plan room with an oak floor and sliding patio doors.

Do you need planning permission for building work in Hertfordshire?

Not always. Many single-storey rear extensions, loft conversions and garage conversions in Hertfordshire can go ahead under permitted development, but the limits are strict and some homes have lost those rights.

Planning applications in Hertfordshire are decided by the district or borough council for your address, such as Dacorum, St Albans, Three Rivers, Watford, Hertsmere or Welwyn Hatfield. Parts of Hertfordshire are within a conservation area, where some permitted development rights are reduced and extra care over materials is expected. Much of the countryside around Hertfordshire is Metropolitan Green Belt. Permitted development still applies to most houses, but applications for larger extensions are judged on whether they are disproportionate to the original building.

Whatever the planning position, extensions and loft and garage conversions need Building Regulations approval, which covers structure, fire safety, insulation and ventilation. Our guide to planning permission for house extensions explains the limits, and the Planning Portal guide to extensions has interactive examples.

Every project starts with a free visit and a written quote; see how an extension project with us works, step by step.

Why choose us as your builders in Hertfordshire?

Choosing builders in Hertfordshire is a big decision, so here is what you get with us:

  • Over 30 years' experience – in carpentry, building and home renovation.
  • All trades under one roof – carpenters, builders, roofers, painters and kitchen fitters in one team.
  • Design to completion – one firm manages your project from groundwork to final finish.
  • Built on recommendations – most of our work comes from repeat customers, referrals and word of mouth.
  • Clean, considerate sites – customers regularly mention tidy sites and work cleared up daily.

“Always on time, very friendly, very tidy and exceptional workmanship. Made the whole process a lot less stressful.”

Gary, customer review
Example of our work: utility room with doors to the gardenExample of our work: oak floor running through an open-plan kitchenExample of our work: extension under construction with scaffolding

Builders in Hertfordshire: frequently asked questions

Do you cover Hertfordshire?

Yes. We're based in Hemel Hempstead and work across Hertfordshire, most often in the west and centre of the county. For building work in the far north or east of the county, call us on 01442 976 112 to check.

Can you build a side-return extension on a Victorian terrace in Hertfordshire?

Yes. Side-return extensions are a popular way to widen the kitchen of a Victorian or Edwardian terrace. Some fall under permitted development, but wraparound designs and homes in conservation areas usually need planning permission, and work near the shared wall usually needs a party wall notice.

Can I add a hip-to-gable loft conversion to a 1930s semi in Hertfordshire?

Usually, yes. Hip-to-gable and rear dormer conversions are common on 1930s semis and are often permitted development within the 50 cubic metre allowance, unless the house is in a conservation area. Building Regulations approval is always needed.

Do I need planning permission for an extension in Hertfordshire?

Not always. Many single-storey rear extensions are allowed under permitted development, within limits such as 3 metres deep for an attached house (4 metres for a detached one) and 4 metres high. Parts of Hertfordshire are within a conservation area, where some permitted development rights are reduced and extra care over materials is expected. Applications in Hertfordshire are decided by the district or borough council for your address, such as Dacorum, St Albans, Three Rivers, Watford, Hertsmere or Welwyn Hatfield. A Lawful Development Certificate gives written confirmation if you're unsure.

How much does a house extension cost in Hertfordshire?

Every extension is priced individually, so we give a free, itemised written quote after visiting your home. The main things that move the price are size, the number of storeys, foundations and ground conditions, structural steelwork, glazing, and the kitchen or bathroom fittings you choose.

How long does it take to get an extension approved and built?

Councils aim to decide householder planning applications within 8 weeks, and Building Regulations approval can run alongside. Build time depends on size and specification, so we set out a written programme with your quote.

Do your builders in Hertfordshire handle all the trades?

Yes. Our team covers carpentry, bricklaying, roofing, plastering, painting and decorating, and kitchen fitting, and we manage the project from design to completion, so you deal with one firm rather than several contractors.

We work across the area, including builders in Hemel Hempstead, builders in St Albans, builders in Watford, builders in Harpenden, builders in Berkhamsted, builders in Hatfield, builders in Welwyn Garden City, builders in Stevenage and builders in Hitchin. See every place on our areas we cover page.

Planning work in Hertfordshire? Call 01442 976 112 or 07799 800 880, message us on WhatsApp or send us your project details for a free, no-obligation quote.

Get in touch today

Let's talk about your project in Hertfordshire

Get in touch today to arrange a free consultation and see how we can bring your project to life, from concept to completion.