East of England regional pricing

How Much Does a Builder Cost in Harlow?

Updated prices for . Harlow prices are typically 3% below the national average.

14 services priced
East of England region
Updated

Price summary

Harlow Price Summary

Service Low Average High
Single Storey Extension £29,070 £48,450 £77,520
Double Storey Extension £48,450 £82,365 £135,660
Loft Conversion £24,225 £43,605 £72,675

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

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Full pricing

All Builder Prices in Harlow

Every price adjusted for Harlow using a 0.969x cost multiplier, rounded to the nearest £5.

Single Storey Extension

Low

£29,070

Average

£48,450

High

£77,520

8-12 weeks

Double Storey Extension

Low

£48,450

Average

£82,365

High

£135,660

12-20 weeks

Loft Conversion

Low

£24,225

Average

£43,605

High

£72,675

6-10 weeks

Garage Conversion

Low

£7,750

Average

£14,535

High

£24,225

2-4 weeks

Porch Build

Low

£2,425

Average

£4,360

High

£7,750

1-2 weeks

Garden Wall

Low

£775

Average

£1,455

High

£2,905

2-4 days

Knock Through Internal Wall

Low

£970

Average

£1,745

High

£3,390

2-4 days

Chimney Breast Removal

Low

£1,165

Average

£1,940

High

£3,390

2-4 days

Underpinning

Low

£4,845

Average

£11,630

High

£24,225

2-4 weeks

Damp Proof Course

Low

£485

Average

£1,165

High

£2,425

1-3 days

New Build Garage

Low

£9,690

Average

£17,440

High

£29,070

3-5 weeks

Outbuilding or Garden Room

Low

£11,630

Average

£24,225

High

£48,450

3-6 weeks

Structural Steelwork (RSJ Installation)

Low

£970

Average

£1,745

High

£2,905

1-2 days

Patio or Decking Build

Low

£1,455

Average

£3,390

High

£6,785

3-5 days

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Regional comparison

How Harlow Compares

Average cost of single storey extension across regions.

Harlow
-3% £48,450
National Average
baseline £50,000
London
+24% £62,150

Local insights

What Affects Builder Costs in Harlow?

The East of England has a mix of housing styles, from Victorian and Edwardian semis to 1930s suburban developments and modern estates. In and around Harlow, many properties in areas near Surrey and Kent vary in age and condition. Older properties with original features typically cost more for builder work due to additional preparation and access challenges.

The East of England sits above the national average for trade costs, influenced by proximity to London and the generally higher cost of living. Labour rates in Harlow are typically 3% below the UK average. Despite this, there's a strong supply of qualified builder professionals across the region. Prices can vary 30-50% between different tradespeople for the same job, so getting multiple quotes is essential.

What you pay for builder work in Harlow depends on the complexity of the job, the materials used, and the condition of your property. Older detached and semi-detached homes often present more challenges that add to the cost. For larger jobs, expect to pay £48,450 to £135,660 for double storey extension in Harlow. Coastal properties in the East of England may face additional considerations that affect pricing.

When getting quotes in Harlow, aim for at least 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 setup, identify complications, and provide a detailed cost breakdown. Be wary of quotes that seem significantly cheaper — they may be cutting corners on materials or quality. Always check qualifications, insurance and recent reviews.

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More services

Other Services in Harlow

Explore costs for other services in the Harlow area.

40 services — scroll to explore

Common questions

Frequently Asked Questions

Common questions about builder costs in Harlow.

How much does a builder cost in Harlow in 2026?
Single Storey Extension in Harlow typically costs between £29,070 and £77,520, with the average being around £48,450. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are builder prices cheaper in Harlow than London?
Yes. Harlow builder costs are typically 3% below the national average, while London prices run around 24% above it. For single storey extension, you could save over £13,700 compared to the same job in London.
How do I find a good builder in Harlow?
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 Harlow?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. Harlow rates are 3% below the national average. Getting multiple quotes is the best way to ensure a fair price.
Do builder prices include materials in Harlow?
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.