North East regional pricing

How Much Does a Builder Cost in County Durham?

Updated prices for . County Durham prices are typically 14% below the national average.

14 services priced
North East region
Updated

Price summary

County Durham Price Summary

Service Low Average High
Single Storey Extension £25,920 £43,200 £69,120
Double Storey Extension £43,200 £73,440 £120,960
Loft Conversion £21,600 £38,880 £64,800

Prices include labour and materials. VAT may apply. Based on North East regional pricing.

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Full pricing

All Builder Prices in County Durham

Every price adjusted for County Durham using a 0.864x cost multiplier, rounded to the nearest £5.

Single Storey Extension

Low

£25,920

Average

£43,200

High

£69,120

8-12 weeks

Double Storey Extension

Low

£43,200

Average

£73,440

High

£120,960

12-20 weeks

Loft Conversion

Low

£21,600

Average

£38,880

High

£64,800

6-10 weeks

Garage Conversion

Low

£6,910

Average

£12,960

High

£21,600

2-4 weeks

Porch Build

Low

£2,160

Average

£3,890

High

£6,910

1-2 weeks

Garden Wall

Low

£690

Average

£1,295

High

£2,590

2-4 days

Knock Through Internal Wall

Low

£865

Average

£1,555

High

£3,025

2-4 days

Chimney Breast Removal

Low

£1,035

Average

£1,730

High

£3,025

2-4 days

Underpinning

Low

£4,320

Average

£10,370

High

£21,600

2-4 weeks

Damp Proof Course

Low

£430

Average

£1,035

High

£2,160

1-3 days

New Build Garage

Low

£8,640

Average

£15,550

High

£25,920

3-5 weeks

Outbuilding or Garden Room

Low

£10,370

Average

£21,600

High

£43,200

3-6 weeks

Structural Steelwork (RSJ Installation)

Low

£865

Average

£1,555

High

£2,590

1-2 days

Patio or Decking Build

Low

£1,295

Average

£3,025

High

£6,050

3-5 days

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Regional comparison

How County Durham Compares

Average cost of single storey extension across regions.

County Durham
-14% £43,200
National Average
baseline £50,000
London
+24% £62,150

Local insights

What Affects Builder Costs in County Durham?

County Durham's housing stock is dominated by Victorian and Edwardian terraced houses, with large numbers of properties across the wider metropolitan area and surrounding towns. These older homes often present challenges for builder work, including limited access, older infrastructure and the need for more preparation. Properties that haven't been updated in decades tend to push costs toward the higher end of the ranges shown above.

The North East consistently sits below the national average for trade costs, and County Durham is no exception. Labour rates here are around 14% below the UK average and considerably lower than London or the South East. This reflects both the lower cost of living and a healthy supply of qualified builder professionals across the region. That said, prices can still vary by 30-50% between different tradespeople for the same job, making multiple quotes essential.

Several factors affect builder costs in County Durham. Back-to-back terraces may have limited access that makes work more complicated and expensive. Properties with solid walls rather than cavities can add to the difficulty. For larger projects, expect costs at the higher end — a double storey extension in County Durham typically runs £43,200 to £120,960. Material and product choices also make a significant difference to the total.

When getting quotes in County Durham, aim for a minimum of three from different qualified professionals. Ask each one to visit and assess the work rather than quoting over the phone. A good builder will check the existing conditions, identify potential complications, and provide a clear cost breakdown. Be wary of quotes that seem significantly cheaper than others — they may be cutting corners on materials or quality. Always check qualifications, insurance and recent reviews before hiring.

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More services

Other Services in County Durham

Explore costs for other services in the County Durham area.

40 services — scroll to explore

Common questions

Frequently Asked Questions

Common questions about builder costs in County Durham.

How much does a builder cost in County Durham in 2026?
Single Storey Extension in County Durham typically costs between £25,920 and £69,120, with the average being around £43,200. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are builder prices cheaper in County Durham than London?
Yes. County Durham builder costs are typically 14% below the national average, while London prices run around 24% above it. For single storey extension, you could save over £18,950 compared to the same job in London.
How do I find a good builder in County Durham?
Get at least three quotes from different tradespeople, check recent reviews, and ask whether the quote includes VAT and everything you need. A detailed written quote that breaks down all costs is a good sign. Always check qualifications, insurance and recent reviews before hiring.
What affects builder prices in County Durham?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. County Durham rates are 14% below the national average. Getting multiple quotes is the best way to ensure a fair price.
Do builder prices include materials in County Durham?
The prices shown on this page include all typical costs. However, when getting real quotes, always confirm what is and isn't included. Some tradespeople break out costs separately, while others give an all-in price. Ask for a detailed breakdown before agreeing to any work.