Builder Costs in Sevenoaks
South East | Modelled planning ranges | Base prices dated May 2026 | Includes labour and materials
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Estimated cost in Sevenoaks
£17,640 - £47,880
Single Storey Extension (medium (15-25 sqm))
Typical duration: 6-12 weeks
Builder Prices in Sevenoaks
Single Storey Extension
£17,640 - £47,880Labour
£10,080 - £25,200
Materials
£7,560 - £22,680
Typical duration: 6-12 weeks
Garage Conversion
£8,190 - £18,900Labour
£5,040 - £11,340
Materials
£3,150 - £7,560
Typical duration: 2-4 weeks
Internal Wall Removal
£882 - £2,898Labour
£630 - £1,890
Materials
£252 - £1,008
Typical duration: 1-3 days
Patio Construction
£1,638 - £5,670Labour
£1,008 - £3,150
Materials
£630 - £2,520
Typical duration: 2-5 days
How Sevenoaks Compares
More expensive
Our model for Sevenoaks is 26% above the base estimate. This is a location assumption, not a measured local quote average.
Illustrative Seasonality for Builder Work
Our seasonal model peaks in Jul and is lowest in Jan. This is not live demand data or a forecast of prices or availability.
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
Builder Profiles Near Sevenoaks
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Frequently Asked Questions
How much does a builder cost in Sevenoaks?
Builder prices in Sevenoaks typically range from £882 for internal wall removal to £47,880 for single storey extension. Prices include both labour and materials.
What is the average cost of single storey extension in Sevenoaks?
Single Storey Extension in Sevenoaks costs between £17,640 and £47,880 on average, depending on the scope of work and materials chosen.
When is the cheapest time to hire a builder in Sevenoaks?
Demand for builder work in Sevenoaks is typically lowest in January. Booking during quieter months may mean better availability and competitive pricing.
Are builder prices in Sevenoaks above or below the national average?
Builder prices in Sevenoaks are around 26% above the national average, reflecting higher local labour rates and cost of living.
Builder prices in nearby towns
Other trade prices in Sevenoaks
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