D & A Brickwork & Building completed projectD & A Brickwork & Building completed projectD & A Brickwork & Building completed projectD & A Brickwork & Building completed projectD & A Brickwork & Building completed project
26+ Years · Fully Insured · FMB Member

Builders in Dunstable and Harpenden

Looking for builders in Dunstable? D & A Brickwork & Building is a family-run firm based in Bidwell, Dunstable, doing extensions, conversions, brickwork and hardscaping — with NVQ Level 2 tradespeople and over 26 years' experience.

We also work in Harpenden and the nearby villages. Our bricklayers · Dunstable projects.

Builders in Harpenden (AL5)

We are based in Bidwell, Dunstable and also work across Harpenden, Redbourn and Wheathampstead. In Harpenden we build house extensions, loft conversions and garage conversions, and take on brickwork, garden walls, patios and driveways.

NVQ Level 2 Qualified
26+ Years Experience
Fully Insured
Free No-Obligation Quotes
Proud member ofFederation of Master Builders
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  • 26+ years experience
  • Fully insured
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Established craft

About Us

We are a family-run building company working across Harpenden, Wheathampstead, Redbourn and the surrounding Hertfordshire villages, specialising in domestic:

  • Extensions
  • All related hard landscapes
  • Garage conversions
  • Structural RSJ works

Our contractors have over 26 years of experience and hold a NVQ LEVEL 2 in various trades.

After I finished school, I went on to Barnfield College to achieve an NVQ LEVEL 2 in brickwork, which was 26 years ago. I first worked for my family construction company doing extensions on people’s homes, and we were taught from the very beginning to always keep a clean and tidy site and working environment, which we still use in full force today.

We have experience in bricklaying, conversions, property extensions, hardscaping, refurbishments, and many other building works.

Hardscaping projectGarden projectExtension project
Local knowledge

Builders in Harpenden, AL5

Harpenden and the villages around it are where we do most of our work — Batford, Southdown, Kinsbourne Green, Townsend, Rothamsted and the roads either side of the Common, plus Wheathampstead and Redbourn, where we work as builders in Harpenden, builders in Wheathampstead and builders in Redbourn. It is a mix of Victorian and Edwardian villas, 1930s semis and large post-war detached houses, and each type wants a different approach to extending. We will tell you honestly which one yours is and what it can take.

Harpenden housing stock

Around Crabtree Lane, Cravells Road and Bloomfield Road you are mostly dealing with late-Victorian and Edwardian brick, solid-wall construction, generous ceiling heights and long rear gardens — ideal for full-width rear extensions with a glazed link. The Uplands and Southdown bring 1930s semis with side access wide enough for a two-storey side extension. Towards Kinsbourne Green and Rothamsted the plots are larger detached houses where wrap-around extensions and garden rooms make more sense than loft work.

Conservation areas & the Common

Properties fronting Harpenden Common, the High Street and parts of Batford sit inside conservation areas, where permitted development is trimmed back: side elevations, roof alterations and front-facing changes usually need consent, and brick, mortar colour and window detail get scrutinised. We match existing brick and use lime mortar where the wall calls for it rather than defaulting to modern cement.

Planning & building control

Harpenden falls under St Albans City & District Council for planning and building control, with Hertfordshire highways involved on anything touching a footway crossing. Plenty of rear extensions and loft conversions go through on permitted development, but Article 4 and conservation constraints apply street by street. We check your specific address before you spend anything on drawings.

What we build in Harpenden

Single and double-storey extensions, loft and garage conversions, period brickwork and repointing, patios, driveways and garden walls, plus structural RSJ openings.

Full Harpenden page

Villages around Harpenden we serve

Each has its own local page with postcodes, housing stock and planning notes.

We also still cover our original Bedfordshire patch — see all areas covered.

How a project with us runs

  1. 01

    Survey & site visit

    We visit, measure up and talk through what you want.

  2. 02

    Estimate

    We assess the property and the work needed before the project begins.

  3. 03

    Build stages

    Foundations and groundworks first, then structure, then finish.

  4. 04

    Handover & aftercare

    A clean, tidy site at handover and we remain on the end of the phone afterwards.

Want the full detail? Read our six-step process or request your free estimate.

A general builder and building contractor in Dunstable

If you need local builders, it helps to know what kind of firm you are calling. We are a family-run general builder and building contractor based in Bidwell, Dunstable. The work we do ourselves is the structural and masonry side of a project: foundations, brickwork and blockwork, extensions, garage and loft conversions, patios, driveways and walls. Where a job needs other trades, we liaise with them so the project runs as one.

We cover Dunstable, Houghton Regis and Totternhoe on our own doorstep, and Harpenden, Wheathampstead and Redbourn a short drive away. Every enquiry starts with a free, no-obligation site visit and an estimate.

Questions about our building work

Are you builders near me?
We are based in Bidwell, Dunstable, and work across Dunstable, Houghton Regis, Totternhoe, Harpenden, Wheathampstead and Redbourn.
What does a general builder do?
A general builder carries out building work across several trades and organises a project from start to finish. For us that means foundations, brickwork, extensions, conversions and hardscaping, with other trades brought in where the job needs them.
Do you take on small jobs?
Yes. Alongside extensions and conversions we build garden walls, repoint brickwork, lay patios and repair chimneys.
How do I get a quote?
Call 07785 548631 or send an enquiry through the site. We arrange a site visit and follow up with a free estimate.

Related: extensions · garage conversions · bricklaying · patios · garden rooms · builders in Dunstable.

Customer reviews

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Google

D&A Brickwork & Building did a fantastic job of our ground floor… Read all reviews

Paul Lindars
January 16, 2026
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Fortunately for me, D&A builders were recommended to help with a small… Read all reviews

Mary Brady
March 22, 2026
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They were very professional and polite did an amazing job and very… Read all reviews

Tracey Hagger
March 29, 2026
D & A Brickwork & Building bricklaying project

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