Builder Costs in Ballymena
Northern Ireland | Modelled planning ranges | Base prices dated May 2026 | Includes labour and materials
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Estimated cost in Ballymena
£11,200 - £30,400
Single Storey Extension (medium (15-25 sqm))
Typical duration: 6-12 weeks
Builder Prices in Ballymena
Single Storey Extension
£11,200 - £30,400Labour
£6,400 - £16,000
Materials
£4,800 - £14,400
Typical duration: 6-12 weeks
Garage Conversion
£5,200 - £12,000Labour
£3,200 - £7,200
Materials
£2,000 - £4,800
Typical duration: 2-4 weeks
Internal Wall Removal
£560 - £1,840Labour
£400 - £1,200
Materials
£160 - £640
Typical duration: 1-3 days
Patio Construction
£1,040 - £3,600Labour
£640 - £2,000
Materials
£400 - £1,600
Typical duration: 2-5 days
How Ballymena Compares
Cheaper than average
Our model for Ballymena is 20% 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
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Frequently Asked Questions
How much does a builder cost in Ballymena?
Builder prices in Ballymena typically range from £560 for internal wall removal to £30,400 for single storey extension. Prices include both labour and materials.
What is the average cost of single storey extension in Ballymena?
Single Storey Extension in Ballymena costs between £11,200 and £30,400 on average, depending on the scope of work and materials chosen.
When is the cheapest time to hire a builder in Ballymena?
Demand for builder work in Ballymena is typically lowest in January. Booking during quieter months may mean better availability and competitive pricing.
Are builder prices in Ballymena above or below the national average?
Builder prices in Ballymena are around 20% below the national average, making it a more affordable area for this type of work.
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