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.
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.
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.
| Job | Low | Average | High | Duration |
|---|---|---|---|---|
| Single Storey Extension | £47,940 | £79,900 | £127,840 | 8-12 weeks |
| Double Storey Extension | £79,900 | £135,830 | £223,720 | 12-20 weeks |
| Loft Conversion | £39,950 | £71,910 | £119,850 | 6-10 weeks |
| Garage Conversion | £12,785 | £23,970 | £39,950 | 2-4 weeks |
| Porch Build | £3,995 | £7,190 | £12,785 | 1-2 weeks |
| Garden Wall | £1,280 | £2,395 | £4,795 | 2-4 days |
| Knock Through Internal Wall | £1,600 | £2,875 | £5,595 | 2-4 days |
| Chimney Breast Removal | £1,920 | £3,195 | £5,595 | 2-4 days |
| Underpinning | £7,990 | £19,175 | £39,950 | 2-4 weeks |
| Damp Proof Course | £800 | £1,920 | £3,995 | 1-3 days |
| New Build Garage | £15,980 | £28,765 | £47,940 | 3-5 weeks |
| Outbuilding or Garden Room | £19,175 | £39,950 | £79,900 | 3-6 weeks |
| Structural Steelwork (RSJ Installation) | £1,600 | £2,875 | £4,795 | 1-2 days |
| Patio or Decking Build | £2,395 | £5,595 | £11,185 | 3-5 days |
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
Regional comparison
How St Albans Compares
Average cost of single storey extension across regions.
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.
More services
Other Services in St Albans
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UK-wide pricing
Builder Costs in Other Cities
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Common questions
Frequently Asked Questions
Common questions about builder costs in St Albans.