Builder Costs in Winchester
South East | Prices updated for 2026 | All estimates include labour and materials
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Estimated cost in Winchester
£17,220 - £46,740
Single Storey Extension (medium (15-25 sqm))
Typical duration: 6-12 weeks
Builder Prices in Winchester
Single Storey Extension
£17,220 - £46,740Labour
£9,840 - £24,600
Materials
£7,380 - £22,140
Typical duration: 6-12 weeks
Garage Conversion
£7,995 - £18,450Labour
£4,920 - £11,070
Materials
£3,075 - £7,380
Typical duration: 2-4 weeks
Internal Wall Removal
£861 - £2,829Labour
£615 - £1,845
Materials
£246 - £984
Typical duration: 1-3 days
Patio Construction
£1,599 - £5,535Labour
£984 - £3,075
Materials
£615 - £2,460
Typical duration: 2-5 days
How Winchester Compares
More expensive
Trade prices in Winchester are typically 23% 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 Winchester?
Builder prices in Winchester typically range from £861 for internal wall removal to £46,740 for single storey extension. Prices include both labour and materials.
What is the average cost of single storey extension in Winchester?
Single Storey Extension in Winchester costs between £17,220 and £46,740 on average, depending on the scope of work and materials chosen.
When is the cheapest time to hire a builder in Winchester?
Demand for builder work in Winchester is typically lowest in January. Booking during quieter months may mean better availability and competitive pricing.
Are builder prices in Winchester above or below the national average?
Builder prices in Winchester are around 23% above the national average, reflecting higher local labour rates and cost of living.
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