Wales regional pricing
How Much Does a Builder Cost in Flintshire?
Updated prices for . Flintshire prices are typically 1% below the national average.
Price summary
Flintshire Price Summary
| Service | Low | Average | High |
|---|---|---|---|
| Single Storey Extension | £29,610 | £49,350 | £78,960 |
| Double Storey Extension | £49,350 | £83,895 | £138,180 |
| Loft Conversion | £24,675 | £44,415 | £74,025 |
Prices include labour and materials. VAT may apply. Based on Wales regional pricing.
Full pricing
All Builder Prices in Flintshire
Every price adjusted for Flintshire using a 0.987x cost multiplier, rounded to the nearest £5.
| Job | Low | Average | High | Duration |
|---|---|---|---|---|
| Single Storey Extension | £29,610 | £49,350 | £78,960 | 8-12 weeks |
| Double Storey Extension | £49,350 | £83,895 | £138,180 | 12-20 weeks |
| Loft Conversion | £24,675 | £44,415 | £74,025 | 6-10 weeks |
| Garage Conversion | £7,895 | £14,805 | £24,675 | 2-4 weeks |
| Porch Build | £2,470 | £4,440 | £7,895 | 1-2 weeks |
| Garden Wall | £790 | £1,480 | £2,960 | 2-4 days |
| Knock Through Internal Wall | £985 | £1,775 | £3,455 | 2-4 days |
| Chimney Breast Removal | £1,185 | £1,975 | £3,455 | 2-4 days |
| Underpinning | £4,935 | £11,845 | £24,675 | 2-4 weeks |
| Damp Proof Course | £495 | £1,185 | £2,470 | 1-3 days |
| New Build Garage | £9,870 | £17,765 | £29,610 | 3-5 weeks |
| Outbuilding or Garden Room | £11,845 | £24,675 | £49,350 | 3-6 weeks |
| Structural Steelwork (RSJ Installation) | £985 | £1,775 | £2,960 | 1-2 days |
| Patio or Decking Build | £1,480 | £3,455 | £6,910 | 3-5 days |
Single Storey Extension
Low
£29,610
Average
£49,350
High
£78,960
8-12 weeks
Double Storey Extension
Low
£49,350
Average
£83,895
High
£138,180
12-20 weeks
Loft Conversion
Low
£24,675
Average
£44,415
High
£74,025
6-10 weeks
Garage Conversion
Low
£7,895
Average
£14,805
High
£24,675
2-4 weeks
Porch Build
Low
£2,470
Average
£4,440
High
£7,895
1-2 weeks
Garden Wall
Low
£790
Average
£1,480
High
£2,960
2-4 days
Knock Through Internal Wall
Low
£985
Average
£1,775
High
£3,455
2-4 days
Chimney Breast Removal
Low
£1,185
Average
£1,975
High
£3,455
2-4 days
Underpinning
Low
£4,935
Average
£11,845
High
£24,675
2-4 weeks
Damp Proof Course
Low
£495
Average
£1,185
High
£2,470
1-3 days
New Build Garage
Low
£9,870
Average
£17,765
High
£29,610
3-5 weeks
Outbuilding or Garden Room
Low
£11,845
Average
£24,675
High
£49,350
3-6 weeks
Structural Steelwork (RSJ Installation)
Low
£985
Average
£1,775
High
£2,960
1-2 days
Patio or Decking Build
Low
£1,480
Average
£3,455
High
£6,910
3-5 days
Regional comparison
How Flintshire Compares
Average cost of single storey extension across regions.
Local insights
What Affects Builder Costs in Flintshire?
Wales has a distinctive mix of housing, from Victorian and Edwardian terraces in the south to stone-built cottages and rural properties across the rest of the country. Flintshire and the wider area around Swansea and the Valleys include many older properties that present challenges for builder work. Stone walls, exposed locations, and older infrastructure all tend to push costs toward the higher end.
Wales sits below the national average for trade costs. Labour rates in Flintshire are typically 1% below the UK average. While this makes builder work more affordable, there can be fewer qualified professionals in rural areas compared to English cities, which can mean longer waiting times. In more populated areas, competition keeps prices reasonable. Always get at least three quotes.
Properties in Flintshire can present specific challenges that affect builder costs. Stone-built and older Welsh terraces often have thick walls that make work more difficult and expensive. Properties in exposed or rural locations may face harsher weather conditions that influence timing and approach. For larger jobs in Flintshire, expect to pay £49,350 to £138,180 for double storey extension.
When getting quotes in Flintshire, 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 existing conditions, 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 Flintshire
Explore costs for other services in the Flintshire 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 Flintshire.