East of England regional pricing

How Much Does a Builder Cost in Southend-on-Sea?

Updated prices for . Southend-on-Sea prices are typically 6% above the national average.

14 services priced
East of England region
Updated

Price summary

Southend-on-Sea Price Summary

Service Low Average High
Single Storey Extension £31,770 £52,950 £84,720
Double Storey Extension £52,950 £90,015 £148,260
Loft Conversion £26,475 £47,655 £79,425

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 Southend-on-Sea

Every price adjusted for Southend-on-Sea using a 1.059x cost multiplier, rounded to the nearest £5.

Single Storey Extension

Low

£31,770

Average

£52,950

High

£84,720

8-12 weeks

Double Storey Extension

Low

£52,950

Average

£90,015

High

£148,260

12-20 weeks

Loft Conversion

Low

£26,475

Average

£47,655

High

£79,425

6-10 weeks

Garage Conversion

Low

£8,470

Average

£15,885

High

£26,475

2-4 weeks

Porch Build

Low

£2,650

Average

£4,765

High

£8,470

1-2 weeks

Garden Wall

Low

£845

Average

£1,590

High

£3,175

2-4 days

Knock Through Internal Wall

Low

£1,060

Average

£1,905

High

£3,705

2-4 days

Chimney Breast Removal

Low

£1,270

Average

£2,120

High

£3,705

2-4 days

Underpinning

Low

£5,295

Average

£12,710

High

£26,475

2-4 weeks

Damp Proof Course

Low

£530

Average

£1,270

High

£2,650

1-3 days

New Build Garage

Low

£10,590

Average

£19,060

High

£31,770

3-5 weeks

Outbuilding or Garden Room

Low

£12,710

Average

£26,475

High

£52,950

3-6 weeks

Structural Steelwork (RSJ Installation)

Low

£1,060

Average

£1,905

High

£3,175

1-2 days

Patio or Decking Build

Low

£1,590

Average

£3,705

High

£7,415

3-5 days

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Regional comparison

How Southend-on-Sea Compares

Average cost of single storey extension across regions.

Southend-on-Sea
+6% £52,950
National Average
baseline £50,000
London
+24% £62,150

Local insights

What Affects Builder Costs in Southend-on-Sea?

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 Southend-on-Sea, 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 Southend-on-Sea are typically 6% above 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 Southend-on-Sea 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 £52,950 to £148,260 for double storey extension in Southend-on-Sea. Coastal properties in the East of England may face additional considerations that affect pricing.

When getting quotes in Southend-on-Sea, 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 Southend-on-Sea

Explore costs for other services in the Southend-on-Sea area.

40 services — scroll to explore

Common questions

Frequently Asked Questions

Common questions about builder costs in Southend-on-Sea.

How much does a builder cost in Southend-on-Sea in 2026?
Single Storey Extension in Southend-on-Sea typically costs between £31,770 and £84,720, with the average being around £52,950. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are builder prices cheaper in Southend-on-Sea than London?
Southend-on-Sea prices are 6% above the national average, though still £9,200 cheaper than London for single storey extension.
How do I find a good builder in Southend-on-Sea?
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 Southend-on-Sea?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. Southend-on-Sea rates are 6% above the national average. Getting multiple quotes is the best way to ensure a fair price.
Do builder prices include materials in Southend-on-Sea?
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.