East of England regional pricing
How Much Does a Builder Cost in Harlow?
Updated prices for . Harlow prices are typically 3% below the national average.
Price summary
Harlow Price Summary
| Service | Low | Average | High |
|---|---|---|---|
| Single Storey Extension | £29,070 | £48,450 | £77,520 |
| Double Storey Extension | £48,450 | £82,365 | £135,660 |
| Loft Conversion | £24,225 | £43,605 | £72,675 |
Prices include labour and materials. VAT may apply. Based on East of England regional pricing.
Full pricing
All Builder Prices in Harlow
Every price adjusted for Harlow using a 0.969x cost multiplier, rounded to the nearest £5.
| Job | Low | Average | High | Duration |
|---|---|---|---|---|
| Single Storey Extension | £29,070 | £48,450 | £77,520 | 8-12 weeks |
| Double Storey Extension | £48,450 | £82,365 | £135,660 | 12-20 weeks |
| Loft Conversion | £24,225 | £43,605 | £72,675 | 6-10 weeks |
| Garage Conversion | £7,750 | £14,535 | £24,225 | 2-4 weeks |
| Porch Build | £2,425 | £4,360 | £7,750 | 1-2 weeks |
| Garden Wall | £775 | £1,455 | £2,905 | 2-4 days |
| Knock Through Internal Wall | £970 | £1,745 | £3,390 | 2-4 days |
| Chimney Breast Removal | £1,165 | £1,940 | £3,390 | 2-4 days |
| Underpinning | £4,845 | £11,630 | £24,225 | 2-4 weeks |
| Damp Proof Course | £485 | £1,165 | £2,425 | 1-3 days |
| New Build Garage | £9,690 | £17,440 | £29,070 | 3-5 weeks |
| Outbuilding or Garden Room | £11,630 | £24,225 | £48,450 | 3-6 weeks |
| Structural Steelwork (RSJ Installation) | £970 | £1,745 | £2,905 | 1-2 days |
| Patio or Decking Build | £1,455 | £3,390 | £6,785 | 3-5 days |
Single Storey Extension
Low
£29,070
Average
£48,450
High
£77,520
8-12 weeks
Double Storey Extension
Low
£48,450
Average
£82,365
High
£135,660
12-20 weeks
Loft Conversion
Low
£24,225
Average
£43,605
High
£72,675
6-10 weeks
Garage Conversion
Low
£7,750
Average
£14,535
High
£24,225
2-4 weeks
Porch Build
Low
£2,425
Average
£4,360
High
£7,750
1-2 weeks
Garden Wall
Low
£775
Average
£1,455
High
£2,905
2-4 days
Knock Through Internal Wall
Low
£970
Average
£1,745
High
£3,390
2-4 days
Chimney Breast Removal
Low
£1,165
Average
£1,940
High
£3,390
2-4 days
Underpinning
Low
£4,845
Average
£11,630
High
£24,225
2-4 weeks
Damp Proof Course
Low
£485
Average
£1,165
High
£2,425
1-3 days
New Build Garage
Low
£9,690
Average
£17,440
High
£29,070
3-5 weeks
Outbuilding or Garden Room
Low
£11,630
Average
£24,225
High
£48,450
3-6 weeks
Structural Steelwork (RSJ Installation)
Low
£970
Average
£1,745
High
£2,905
1-2 days
Patio or Decking Build
Low
£1,455
Average
£3,390
High
£6,785
3-5 days
Regional comparison
How Harlow Compares
Average cost of single storey extension across regions.
Local insights
What Affects Builder Costs in Harlow?
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 Harlow, 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 Harlow are typically 3% 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 Harlow 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 £48,450 to £135,660 for double storey extension in Harlow. Coastal properties in the East of England may face additional considerations that affect pricing.
When getting quotes in Harlow, 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
Builder Costs in Other Cities
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Common questions
Frequently Asked Questions
Common questions about builder costs in Harlow.