East of England regional pricing

How Much Does a Builder Cost in St Albans?

Updated prices for . St Albans prices are typically 60% above the national average.

14 services priced
East of England region
Updated

Price summary

St Albans Price Summary

Service Low Average High
Single Storey Extension £47,940 £79,900 £127,840
Double Storey Extension £79,900 £135,830 £223,720
Loft Conversion £39,950 £71,910 £119,850

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

Ad Slot -- In-Content 1

Full pricing

All Builder Prices in St Albans

Every price adjusted for St Albans using a 1.598x cost multiplier, rounded to the nearest £5.

Single Storey Extension

Low

£47,940

Average

£79,900

High

£127,840

8-12 weeks

Double Storey Extension

Low

£79,900

Average

£135,830

High

£223,720

12-20 weeks

Loft Conversion

Low

£39,950

Average

£71,910

High

£119,850

6-10 weeks

Garage Conversion

Low

£12,785

Average

£23,970

High

£39,950

2-4 weeks

Porch Build

Low

£3,995

Average

£7,190

High

£12,785

1-2 weeks

Garden Wall

Low

£1,280

Average

£2,395

High

£4,795

2-4 days

Knock Through Internal Wall

Low

£1,600

Average

£2,875

High

£5,595

2-4 days

Chimney Breast Removal

Low

£1,920

Average

£3,195

High

£5,595

2-4 days

Underpinning

Low

£7,990

Average

£19,175

High

£39,950

2-4 weeks

Damp Proof Course

Low

£800

Average

£1,920

High

£3,995

1-3 days

New Build Garage

Low

£15,980

Average

£28,765

High

£47,940

3-5 weeks

Outbuilding or Garden Room

Low

£19,175

Average

£39,950

High

£79,900

3-6 weeks

Structural Steelwork (RSJ Installation)

Low

£1,600

Average

£2,875

High

£4,795

1-2 days

Patio or Decking Build

Low

£2,395

Average

£5,595

High

£11,185

3-5 days

Ad Slot -- In-Content 2

Regional comparison

How St Albans Compares

Average cost of single storey extension across regions.

St Albans
+60% £79,900
National Average
baseline £50,000
London
+24% £62,150

Local insights

What Affects Builder Costs in St Albans?

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 St Albans, 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 St Albans are typically 60% 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 St Albans 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 £79,900 to £223,720 for double storey extension in St Albans. Coastal properties in the East of England may face additional considerations that affect pricing.

When getting quotes in St Albans, 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 St Albans

Explore costs for other services in the St Albans area.

40 services — scroll to explore

Common questions

Frequently Asked Questions

Common questions about builder costs in St Albans.

How much does a builder cost in St Albans in 2026?
Single Storey Extension in St Albans typically costs between £47,940 and £127,840, with the average being around £79,900. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are builder prices cheaper in St Albans than London?
St Albans prices are 60% above the national average, though still comparable to London for single storey extension.
How do I find a good builder in St Albans?
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 St Albans?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. St Albans rates are 60% above the national average. Getting multiple quotes is the best way to ensure a fair price.
Do builder prices include materials in St Albans?
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.