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House extensions in Durham

More space without the move. Single and two-storey extensions across Durham, designed and built by one accountable firm, design through handover.

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Flat-roof rear extension with roof lanterns and full-width sliding glass built by ATKINSONS
Extensions in Durham

More room. One firm, start to finish.

Outgrown your home but love where you live? An extension adds the space, value and function you need without the cost and upheaval of moving. We design and build extensions right across Durham, on everything from the Victorian terraces to the newer estates around Newton Hall and Belmont.

We run the whole job: design, planning, structural work, every trade and the finishes. One contractor, one programme, one fixed price, so you're not coordinating an architect, a builder, a sparky and a plumber who've never met.

A named Contracts Manager keeps it on track with daily site visits, and you get a written programme before a brick is laid.

  • Design and planning handled in-house
  • Structure, electrics, plumbing and finishes by our own trades
  • Named Contracts Manager, daily site visits
  • Fixed written quote before work starts
What's included

Everything under one roof.

Why ATKINSONS

Local. Accountable. Every trade in-house.

01

No subbies

The people on your job work for ATKINSONS. One firm accountable for the lot.

02

One manager

A named Contracts Manager from first visit to final certificate.

03

Real people

A real person answers in office hours, with an emergency line out of hours. Engineers dispatched, not job numbers logged.

04

Fixed prices

In writing, in plain English. No surprises in the small print.

How we work

Six steps. No surprises.

Step 01

Enquiry logged

Tell us the work, the property, your timescale and budget through our quick form, and upload any plans or photos. Everything in one place from the start.

Step 02

Initial review

We review what you've sent and decide the best next step, whether that's pricing straight away or sorting drawings, planning or building control first.

Step 03

Site visit

Where it's needed, we come and look properly: access, structure, levels and anything affecting the cost. Your chance to ask questions before we quote.

Step 04

Detailed quote

A clear, transparent quote setting out what's included, assumed and excluded, with a payment structure. Confidence in what you're accepting, not a one-line price.

Step 05

Planned properly

Once you're happy, we sort dates, materials, access and building control before anyone lifts a tool, so the job runs smoothly on site.

Step 06

Work begins

Our team arrives clear on the agreed scope, keeps the site tidy, communicates as we go and respects your home throughout.

Questions we get asked

Extensions in Durham. Straight answers.

How much does an extension cost in Durham?

It depends on size, specification and ground conditions, so we don't guess. We visit your Durham home, measure up, and come back with a fixed written quote in plain English. The free site visit carries no obligation.

Do I need planning permission for an extension in Durham?

Not always. Many single-storey extensions fall under permitted development, but conservation areas and listed buildings around the city have tighter rules. We assess this at the site visit and handle any application to Durham County Council.

How long does an extension take to build?

A typical single-storey extension runs eight to twelve weeks on site depending on size and spec. You get a written programme before we lay a brick.

Will I be able to stay in the house during the work?

Usually yes. We phase the work to keep your home liveable, and a clean, tidy site is part of how we work.

Do you handle the design, planning and building regs?

Yes, all of it: design, structural calculations, planning where needed, building control sign-off and completion certificates, under one contract.

Who manages the job day to day?

A named Contracts Manager from day one, on site daily, reachable throughout. One person accountable from first visit to handover.

Do you use subcontractors?

No. Every trade on your Durham extension is on our own books, which is why one firm stays accountable for the whole job.

Get a quote

Tell us the job. We’ll fix a price.

Fill this in and one of the team rings you back, usually within one working day. Prefer to talk now? Call 0191 369 2405. Office hours Mon to Fri 8am to 5pm, Sat 9am to 1pm.

✓ FREE SITE VISIT ✓ FIXED WRITTEN QUOTE ✓ NO OBLIGATION

No call-out charge, no obligation. See our privacy policy.

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More in Durham

Every trade in Durham. One firm.

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More space, no move

Thinking about an extension in Durham? Let’s look.

Book a free site visit with ATKINSONS. Design through handover, one accountable firm, fixed written quote. No obligation.

Why choose ATKINSONS? →

Mon to Fri 8am–5pm · Sat 9am–1pm 0191 369 2405

Or email enquiries@atkinsonsgroup.co.uk

No call-out charge for quotes. Fixed prices, in writing.