Builder Costs in Cwmbran
Wales | Modelled planning ranges | Base prices dated May 2026 | Includes labour and materials
Cost Calculator
Estimated cost in Cwmbran
£11,760 - £31,920
Single Storey Extension (medium (15-25 sqm))
Typical duration: 6-12 weeks
Builder Prices in Cwmbran
Single Storey Extension
£11,760 - £31,920Labour
£6,720 - £16,800
Materials
£5,040 - £15,120
Typical duration: 6-12 weeks
Garage Conversion
£5,460 - £12,600Labour
£3,360 - £7,560
Materials
£2,100 - £5,040
Typical duration: 2-4 weeks
Internal Wall Removal
£588 - £1,932Labour
£420 - £1,260
Materials
£168 - £672
Typical duration: 1-3 days
Patio Construction
£1,092 - £3,780Labour
£672 - £2,100
Materials
£420 - £1,680
Typical duration: 2-5 days
How Cwmbran Compares
Cheaper than average
Our model for Cwmbran is 16% below 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 Cwmbran
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Frequently Asked Questions
How much does a builder cost in Cwmbran?
Builder prices in Cwmbran typically range from £588 for internal wall removal to £31,920 for single storey extension. Prices include both labour and materials.
What is the average cost of single storey extension in Cwmbran?
Single Storey Extension in Cwmbran costs between £11,760 and £31,920 on average, depending on the scope of work and materials chosen.
When is the cheapest time to hire a builder in Cwmbran?
Demand for builder work in Cwmbran is typically lowest in January. Booking during quieter months may mean better availability and competitive pricing.
Are builder prices in Cwmbran above or below the national average?
Builder prices in Cwmbran are around 16% below the national average, making it a more affordable area for this type of work.
Builder prices in nearby towns
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