South East regional pricing

How Much Does a Builder Cost in Arun?

Updated prices for . Arun prices are typically 7% below the national average.

14 services priced
South East region
Updated

Price summary

Arun Price Summary

Service Low Average High
Single Storey Extension £27,900 £46,500 £74,400
Double Storey Extension £46,500 £79,050 £130,200
Loft Conversion £23,250 £41,850 £69,750

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

Ad Slot -- In-Content 1

Full pricing

All Builder Prices in Arun

Every price adjusted for Arun using a 0.93x cost multiplier, rounded to the nearest £5.

Single Storey Extension

Low

£27,900

Average

£46,500

High

£74,400

8-12 weeks

Double Storey Extension

Low

£46,500

Average

£79,050

High

£130,200

12-20 weeks

Loft Conversion

Low

£23,250

Average

£41,850

High

£69,750

6-10 weeks

Garage Conversion

Low

£7,440

Average

£13,950

High

£23,250

2-4 weeks

Porch Build

Low

£2,325

Average

£4,185

High

£7,440

1-2 weeks

Garden Wall

Low

£745

Average

£1,395

High

£2,790

2-4 days

Knock Through Internal Wall

Low

£930

Average

£1,675

High

£3,255

2-4 days

Chimney Breast Removal

Low

£1,115

Average

£1,860

High

£3,255

2-4 days

Underpinning

Low

£4,650

Average

£11,160

High

£23,250

2-4 weeks

Damp Proof Course

Low

£465

Average

£1,115

High

£2,325

1-3 days

New Build Garage

Low

£9,300

Average

£16,740

High

£27,900

3-5 weeks

Outbuilding or Garden Room

Low

£11,160

Average

£23,250

High

£46,500

3-6 weeks

Structural Steelwork (RSJ Installation)

Low

£930

Average

£1,675

High

£2,790

1-2 days

Patio or Decking Build

Low

£1,395

Average

£3,255

High

£6,510

3-5 days

Ad Slot -- In-Content 2

Regional comparison

How Arun Compares

Average cost of single storey extension across regions.

Arun
-7% £46,500
National Average
baseline £50,000
London
+24% £62,150

Local insights

What Affects Builder Costs in Arun?

The South East has a mix of housing styles, from Victorian and Edwardian semis to 1930s suburban developments and modern estates. In and around Arun, 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 Arun are typically 7% 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 Arun 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 £46,500 to £130,200 for double storey extension in Arun. Coastal properties in the South East may face additional considerations that affect pricing.

When getting quotes in Arun, 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.

Ad Slot -- In-Content 3

More services

Other Services in Arun

Explore costs for other services in the Arun area.

40 services — scroll to explore

Common questions

Frequently Asked Questions

Common questions about builder costs in Arun.

How much does a builder cost in Arun in 2026?
Single Storey Extension in Arun typically costs between £27,900 and £74,400, with the average being around £46,500. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are builder prices cheaper in Arun than London?
Yes. Arun builder costs are typically 7% below the national average, while London prices run around 24% above it. For single storey extension, you could save over £15,650 compared to the same job in London.
How do I find a good builder in Arun?
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 Arun?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. Arun rates are 7% below the national average. Getting multiple quotes is the best way to ensure a fair price.
Do builder prices include materials in Arun?
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.