South East regional pricing
How Much Does a Builder Cost in Winchester?
Updated prices for . Winchester prices are typically 17% above the national average.
Price summary
Winchester Price Summary
| Service | Low | Average | High |
|---|---|---|---|
| Single Storey Extension | £34,980 | £58,300 | £93,280 |
| Double Storey Extension | £58,300 | £99,110 | £163,240 |
| Loft Conversion | £29,150 | £52,470 | £87,450 |
Prices include labour and materials. VAT may apply. Based on South East regional pricing.
Full pricing
All Builder Prices in Winchester
Every price adjusted for Winchester using a 1.166x cost multiplier, rounded to the nearest £5.
| Job | Low | Average | High | Duration |
|---|---|---|---|---|
| Single Storey Extension | £34,980 | £58,300 | £93,280 | 8-12 weeks |
| Double Storey Extension | £58,300 | £99,110 | £163,240 | 12-20 weeks |
| Loft Conversion | £29,150 | £52,470 | £87,450 | 6-10 weeks |
| Garage Conversion | £9,330 | £17,490 | £29,150 | 2-4 weeks |
| Porch Build | £2,915 | £5,245 | £9,330 | 1-2 weeks |
| Garden Wall | £935 | £1,750 | £3,500 | 2-4 days |
| Knock Through Internal Wall | £1,165 | £2,100 | £4,080 | 2-4 days |
| Chimney Breast Removal | £1,400 | £2,330 | £4,080 | 2-4 days |
| Underpinning | £5,830 | £13,990 | £29,150 | 2-4 weeks |
| Damp Proof Course | £585 | £1,400 | £2,915 | 1-3 days |
| New Build Garage | £11,660 | £20,990 | £34,980 | 3-5 weeks |
| Outbuilding or Garden Room | £13,990 | £29,150 | £58,300 | 3-6 weeks |
| Structural Steelwork (RSJ Installation) | £1,165 | £2,100 | £3,500 | 1-2 days |
| Patio or Decking Build | £1,750 | £4,080 | £8,160 | 3-5 days |
Single Storey Extension
Low
£34,980
Average
£58,300
High
£93,280
8-12 weeks
Double Storey Extension
Low
£58,300
Average
£99,110
High
£163,240
12-20 weeks
Loft Conversion
Low
£29,150
Average
£52,470
High
£87,450
6-10 weeks
Garage Conversion
Low
£9,330
Average
£17,490
High
£29,150
2-4 weeks
Porch Build
Low
£2,915
Average
£5,245
High
£9,330
1-2 weeks
Garden Wall
Low
£935
Average
£1,750
High
£3,500
2-4 days
Knock Through Internal Wall
Low
£1,165
Average
£2,100
High
£4,080
2-4 days
Chimney Breast Removal
Low
£1,400
Average
£2,330
High
£4,080
2-4 days
Underpinning
Low
£5,830
Average
£13,990
High
£29,150
2-4 weeks
Damp Proof Course
Low
£585
Average
£1,400
High
£2,915
1-3 days
New Build Garage
Low
£11,660
Average
£20,990
High
£34,980
3-5 weeks
Outbuilding or Garden Room
Low
£13,990
Average
£29,150
High
£58,300
3-6 weeks
Structural Steelwork (RSJ Installation)
Low
£1,165
Average
£2,100
High
£3,500
1-2 days
Patio or Decking Build
Low
£1,750
Average
£4,080
High
£8,160
3-5 days
Regional comparison
How Winchester Compares
Average cost of single storey extension across regions.
Local insights
What Affects Builder Costs in Winchester?
The South East has a mix of housing styles, from Victorian and Edwardian semis to 1930s suburban developments and modern estates. In and around Winchester, 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 South East sits above the national average for trade costs, influenced by proximity to London and the generally higher cost of living. Labour rates in Winchester are typically 17% 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 Winchester 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 £58,300 to £163,240 for double storey extension in Winchester. Coastal properties in the South East may face additional considerations that affect pricing.
When getting quotes in Winchester, 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 Winchester
Explore costs for other services in the Winchester 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 Winchester.