Builder Costs in Henley-on-Thames
South East | Prices updated for 2026 | All estimates include labour and materials
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Estimated cost in Henley-on-Thames
£17,920 - £48,640
Single Storey Extension (medium (15-25 sqm))
Typical duration: 6-12 weeks
Builder Prices in Henley-on-Thames
Single Storey Extension
£17,920 - £48,640Labour
£10,240 - £25,600
Materials
£7,680 - £23,040
Typical duration: 6-12 weeks
Garage Conversion
£8,320 - £19,200Labour
£5,120 - £11,520
Materials
£3,200 - £7,680
Typical duration: 2-4 weeks
Internal Wall Removal
£896 - £2,944Labour
£640 - £1,920
Materials
£256 - £1,024
Typical duration: 1-3 days
Patio Construction
£1,664 - £5,760Labour
£1,024 - £3,200
Materials
£640 - £2,560
Typical duration: 2-5 days
How Henley-on-Thames Compares
More expensive
Trade prices in Henley-on-Thames are typically 28% above the national average. This reflects local labour rates and the cost of living in South East.
Seasonal Demand for Builder Work
Peak demand is typically in Jul, with the quietest period around Jan. You may find lower prices and better availability during off-peak months.
What Affects the Price
Single Storey Extension
- Extension size (square metres)
- Foundation type required by ground conditions
- Roof design (flat, pitched, or lean-to)
- Level of internal finish and specification
- Planning permission or permitted development status
Garage Conversion
- Garage size and structural condition
- Level of insulation and damp proofing needed
- Whether plumbing or electrics are required
- Quality of internal finish
Internal Wall Removal
- Whether the wall is load-bearing
- Steel beam size and specification
- Services (pipes, wires) running through the wall
- Making good to floor, ceiling, and adjacent walls
Patio Construction
- Patio area (square metres)
- Material choice (concrete slabs, natural stone, porcelain)
- Ground preparation and levelling
- Drainage and edging requirements
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Frequently Asked Questions
How much does a builder cost in Henley-on-Thames?
Builder prices in Henley-on-Thames typically range from £896 for internal wall removal to £48,640 for single storey extension. Prices include both labour and materials.
What is the average cost of single storey extension in Henley-on-Thames?
Single Storey Extension in Henley-on-Thames costs between £17,920 and £48,640 on average, depending on the scope of work and materials chosen.
When is the cheapest time to hire a builder in Henley-on-Thames?
Demand for builder work in Henley-on-Thames is typically lowest in January. Booking during quieter months may mean better availability and competitive pricing.
Are builder prices in Henley-on-Thames above or below the national average?
Builder prices in Henley-on-Thames are around 28% above the national average, reflecting higher local labour rates and cost of living.
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