South East regional pricing
How Much Does a Builder Cost in Slough?
Updated prices for . Slough prices are typically 1% below the national average.
Price summary
Slough Price Summary
| Service | Low | Average | High |
|---|---|---|---|
| Single Storey Extension | £29,670 | £49,450 | £79,120 |
| Double Storey Extension | £49,450 | £84,065 | £138,460 |
| Loft Conversion | £24,725 | £44,505 | £74,175 |
Prices include labour and materials. VAT may apply. Based on South East regional pricing.
Full pricing
All Builder Prices in Slough
Every price adjusted for Slough using a 0.989x cost multiplier, rounded to the nearest £5.
| Job | Low | Average | High | Duration |
|---|---|---|---|---|
| Single Storey Extension | £29,670 | £49,450 | £79,120 | 8-12 weeks |
| Double Storey Extension | £49,450 | £84,065 | £138,460 | 12-20 weeks |
| Loft Conversion | £24,725 | £44,505 | £74,175 | 6-10 weeks |
| Garage Conversion | £7,910 | £14,835 | £24,725 | 2-4 weeks |
| Porch Build | £2,475 | £4,450 | £7,910 | 1-2 weeks |
| Garden Wall | £790 | £1,485 | £2,965 | 2-4 days |
| Knock Through Internal Wall | £990 | £1,780 | £3,460 | 2-4 days |
| Chimney Breast Removal | £1,185 | £1,980 | £3,460 | 2-4 days |
| Underpinning | £4,945 | £11,870 | £24,725 | 2-4 weeks |
| Damp Proof Course | £495 | £1,185 | £2,475 | 1-3 days |
| New Build Garage | £9,890 | £17,800 | £29,670 | 3-5 weeks |
| Outbuilding or Garden Room | £11,870 | £24,725 | £49,450 | 3-6 weeks |
| Structural Steelwork (RSJ Installation) | £990 | £1,780 | £2,965 | 1-2 days |
| Patio or Decking Build | £1,485 | £3,460 | £6,925 | 3-5 days |
Single Storey Extension
Low
£29,670
Average
£49,450
High
£79,120
8-12 weeks
Double Storey Extension
Low
£49,450
Average
£84,065
High
£138,460
12-20 weeks
Loft Conversion
Low
£24,725
Average
£44,505
High
£74,175
6-10 weeks
Garage Conversion
Low
£7,910
Average
£14,835
High
£24,725
2-4 weeks
Porch Build
Low
£2,475
Average
£4,450
High
£7,910
1-2 weeks
Garden Wall
Low
£790
Average
£1,485
High
£2,965
2-4 days
Knock Through Internal Wall
Low
£990
Average
£1,780
High
£3,460
2-4 days
Chimney Breast Removal
Low
£1,185
Average
£1,980
High
£3,460
2-4 days
Underpinning
Low
£4,945
Average
£11,870
High
£24,725
2-4 weeks
Damp Proof Course
Low
£495
Average
£1,185
High
£2,475
1-3 days
New Build Garage
Low
£9,890
Average
£17,800
High
£29,670
3-5 weeks
Outbuilding or Garden Room
Low
£11,870
Average
£24,725
High
£49,450
3-6 weeks
Structural Steelwork (RSJ Installation)
Low
£990
Average
£1,780
High
£2,965
1-2 days
Patio or Decking Build
Low
£1,485
Average
£3,460
High
£6,925
3-5 days
Regional comparison
How Slough Compares
Average cost of single storey extension across regions.
Local insights
What Affects Builder Costs in Slough?
The South East has a mix of housing styles, from Victorian and Edwardian semis to 1930s suburban developments and modern estates. In and around Slough, 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 Slough are typically 1% below 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 Slough 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 £49,450 to £138,460 for double storey extension in Slough. Coastal properties in the South East may face additional considerations that affect pricing.
When getting quotes in Slough, 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
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UK-wide pricing
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Common questions
Frequently Asked Questions
Common questions about builder costs in Slough.