South East regional pricing

How Much Does a Builder Cost in Crawley?

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

14 services priced
South East region
Updated

Price summary

Crawley Price Summary

Service Low Average High
Single Storey Extension £29,160 £48,600 £77,760
Double Storey Extension £48,600 £82,620 £136,080
Loft Conversion £24,300 £43,740 £72,900

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

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Full pricing

All Builder Prices in Crawley

Every price adjusted for Crawley using a 0.972x cost multiplier, rounded to the nearest £5.

Single Storey Extension

Low

£29,160

Average

£48,600

High

£77,760

8-12 weeks

Double Storey Extension

Low

£48,600

Average

£82,620

High

£136,080

12-20 weeks

Loft Conversion

Low

£24,300

Average

£43,740

High

£72,900

6-10 weeks

Garage Conversion

Low

£7,775

Average

£14,580

High

£24,300

2-4 weeks

Porch Build

Low

£2,430

Average

£4,375

High

£7,775

1-2 weeks

Garden Wall

Low

£780

Average

£1,460

High

£2,915

2-4 days

Knock Through Internal Wall

Low

£970

Average

£1,750

High

£3,400

2-4 days

Chimney Breast Removal

Low

£1,165

Average

£1,945

High

£3,400

2-4 days

Underpinning

Low

£4,860

Average

£11,665

High

£24,300

2-4 weeks

Damp Proof Course

Low

£485

Average

£1,165

High

£2,430

1-3 days

New Build Garage

Low

£9,720

Average

£17,495

High

£29,160

3-5 weeks

Outbuilding or Garden Room

Low

£11,665

Average

£24,300

High

£48,600

3-6 weeks

Structural Steelwork (RSJ Installation)

Low

£970

Average

£1,750

High

£2,915

1-2 days

Patio or Decking Build

Low

£1,460

Average

£3,400

High

£6,805

3-5 days

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Regional comparison

How Crawley Compares

Average cost of single storey extension across regions.

Crawley
-3% £48,600
National Average
baseline £50,000
London
+24% £62,150

Local insights

What Affects Builder Costs in Crawley?

The South East has a mix of housing styles, from Victorian and Edwardian semis to 1930s suburban developments and modern estates. In and around Crawley, 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 South East sits above the national average for trade costs, influenced by proximity to London and the generally higher cost of living. Labour rates in Crawley 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 Crawley 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 £48,600 to £136,080 for double storey extension in Crawley. Coastal properties in the South East may face additional considerations that affect pricing.

When getting quotes in Crawley, 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 Crawley

Explore costs for other services in the Crawley area.

40 services — scroll to explore

Common questions

Frequently Asked Questions

Common questions about builder costs in Crawley.

How much does a builder cost in Crawley in 2026?
Single Storey Extension in Crawley typically costs between £29,160 and £77,760, with the average being around £48,600. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are builder prices cheaper in Crawley than London?
Yes. Crawley 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 £13,550 compared to the same job in London.
How do I find a good builder in Crawley?
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 Crawley?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. Crawley 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 Crawley?
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.