Builder Costs in Carrickfergus
Northern Ireland | Prices updated for 2026 | All estimates include labour and materials
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Estimated cost in Carrickfergus
£11,760 - £31,920
Single Storey Extension (medium (15-25 sqm))
Typical duration: 6-12 weeks
Builder Prices in Carrickfergus
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 Carrickfergus Compares
Cheaper than average
Trade prices in Carrickfergus are typically 16% below the national average. This reflects local labour rates and the cost of living in Northern Ireland.
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 Carrickfergus?
Builder prices in Carrickfergus 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 Carrickfergus?
Single Storey Extension in Carrickfergus 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 Carrickfergus?
Demand for builder work in Carrickfergus is typically lowest in January. Booking during quieter months may mean better availability and competitive pricing.
Are builder prices in Carrickfergus above or below the national average?
Builder prices in Carrickfergus are around 16% below the national average, making it a more affordable area for this type of work.
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