West Midlands regional pricing
How Much Does a Builder Cost in Birmingham?
Updated prices for . Birmingham prices are typically 7% below the national average.
Price summary
Birmingham Price Summary
| Service | Low | Average | High |
|---|---|---|---|
| Single Storey Extension | £27,990 | £46,650 | £74,640 |
| Double Storey Extension | £46,650 | £79,305 | £130,620 |
| Loft Conversion | £23,325 | £41,985 | £69,975 |
Prices include labour and materials. VAT may apply. Based on West Midlands regional pricing.
Full pricing
All Builder Prices in Birmingham
Every price adjusted for Birmingham using a 0.933x cost multiplier, rounded to the nearest £5.
| Job | Low | Average | High | Duration |
|---|---|---|---|---|
| Single Storey Extension | £27,990 | £46,650 | £74,640 | 8-12 weeks |
| Double Storey Extension | £46,650 | £79,305 | £130,620 | 12-20 weeks |
| Loft Conversion | £23,325 | £41,985 | £69,975 | 6-10 weeks |
| Garage Conversion | £7,465 | £13,995 | £23,325 | 2-4 weeks |
| Porch Build | £2,335 | £4,200 | £7,465 | 1-2 weeks |
| Garden Wall | £745 | £1,400 | £2,800 | 2-4 days |
| Knock Through Internal Wall | £935 | £1,680 | £3,265 | 2-4 days |
| Chimney Breast Removal | £1,120 | £1,865 | £3,265 | 2-4 days |
| Underpinning | £4,665 | £11,195 | £23,325 | 2-4 weeks |
| Damp Proof Course | £465 | £1,120 | £2,335 | 1-3 days |
| New Build Garage | £9,330 | £16,795 | £27,990 | 3-5 weeks |
| Outbuilding or Garden Room | £11,195 | £23,325 | £46,650 | 3-6 weeks |
| Structural Steelwork (RSJ Installation) | £935 | £1,680 | £2,800 | 1-2 days |
| Patio or Decking Build | £1,400 | £3,265 | £6,530 | 3-5 days |
Single Storey Extension
Low
£27,990
Average
£46,650
High
£74,640
8-12 weeks
Double Storey Extension
Low
£46,650
Average
£79,305
High
£130,620
12-20 weeks
Loft Conversion
Low
£23,325
Average
£41,985
High
£69,975
6-10 weeks
Garage Conversion
Low
£7,465
Average
£13,995
High
£23,325
2-4 weeks
Porch Build
Low
£2,335
Average
£4,200
High
£7,465
1-2 weeks
Garden Wall
Low
£745
Average
£1,400
High
£2,800
2-4 days
Knock Through Internal Wall
Low
£935
Average
£1,680
High
£3,265
2-4 days
Chimney Breast Removal
Low
£1,120
Average
£1,865
High
£3,265
2-4 days
Underpinning
Low
£4,665
Average
£11,195
High
£23,325
2-4 weeks
Damp Proof Course
Low
£465
Average
£1,120
High
£2,335
1-3 days
New Build Garage
Low
£9,330
Average
£16,795
High
£27,990
3-5 weeks
Outbuilding or Garden Room
Low
£11,195
Average
£23,325
High
£46,650
3-6 weeks
Structural Steelwork (RSJ Installation)
Low
£935
Average
£1,680
High
£2,800
1-2 days
Patio or Decking Build
Low
£1,400
Average
£3,265
High
£6,530
3-5 days
Regional comparison
How Birmingham Compares
Average cost of single storey extension across regions.
Local insights
What Affects Builder Costs in Birmingham?
The Midlands has a wide range of housing types, from Victorian terraces and back-to-backs to post-war council estates and modern developments. Birmingham and surrounding areas like Solihull and Coventry have a large number of properties of varying ages and conditions. Older properties generally cost more for builder work due to the extra preparation and access challenges they present.
The West Midlands sits slightly below the national average for trade costs, making it one of the more affordable areas for builder work. Labour rates in Birmingham are around 7% below the UK average. There's a good supply of qualified professionals across the Midlands, but prices still vary by 30-50% between tradespeople for the same job. Always get multiple quotes.
What you pay for builder work in Birmingham depends on the job complexity, materials chosen, and the condition of your property. Older properties with solid walls or limited access can make work more disruptive and expensive. For larger projects, expect to pay £46,650 to £130,620 for double storey extension in Birmingham. Material choices also make a significant difference to the total.
When getting quotes in Birmingham, 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 conditions, identify potential complications, and give you a detailed breakdown of costs. Be wary of significantly cheaper quotes — they may cut corners on materials or quality. Always check qualifications, insurance and recent reviews.
More services
Other Services in Birmingham
Explore costs for other services in the Birmingham area.
40 services — scroll to explore
UK-wide pricing
Builder Costs in Other Cities
Compare builder prices across the UK.
Common questions
Frequently Asked Questions
Common questions about builder costs in Birmingham.