How much does a builder charge per day in the UK?

A general builder in the UK typically charges £200–£300 per day. Specialists and main contractors can charge £300–£500 per day. Labourers cost £120–£180 per day. Rates are typically 20–30% higher in London and the South East.

Do I need planning permission for an extension?

Many single-storey extensions under 4 metres (detached) or 3 metres (semi/terraced) fall under Permitted Development Rights and don't need planning permission. However, they still require Building Regulations approval. Always check with your local planning authority before work begins, especially if you live in a conservation area or listed building.

How long does a loft conversion take?

A typical loft conversion takes 8–16 weeks from start to finish. A straightforward Velux loft conversion can be completed in 6–8 weeks, while a dormer or mansard conversion may take up to 16 weeks. This includes structural work, roofing, insulation, electrical, and plastering.

How Much Does a Builder Cost UK 2026?

Average builder costs, day rates, and typical project prices.

Note: Prices are estimates. Always get multiple written quotes. Major projects require building regulations approval.

Average Day Rates

Type of Builder	Day Rate
Labourer	£120-£180
Craftsman	£180-£250
General Builder	£200-£300
Specialist/Restorer	£300-£450
Main Contractor	£300-£500

Small Jobs & Typical Costs

Job	Average Cost	Time
Repointing (per m²)	£40-£80	Variable
Damp course installation	£500-£2,000	2-5 days
Partition wall	£400-£800	1-2 days
Garage conversion	£5,000-£15,000	2-4 weeks
Extension (single)	£20,000-£50,000	8-16 weeks
Loft conversion	£25,000-£60,000	8-16 weeks

Kitchen & Bathroom Costs

Job	Average Cost	Time
Kitchen fitting only	£1,500-£4,000	5-10 days
Full kitchen install	£8,000-£25,000	2-4 weeks
Bathroom fitting	£1,500-£3,500	5-10 days
Wet room	£3,000-£8,000	1-2 weeks

Structural Work

Job	Average Cost	Notes
RSJ installation	£1,000-£3,000	Requires engineer
Beam & column	£2,000-£5,000	Structural engineer required
Knock through	£1,500-£4,000	Wall removal
Basement dig	£30,000-£80,000	Major project

Finding a Reliable Builder

The building trade is largely unregulated in the UK — anyone can call themselves a builder. Protecting yourself through due diligence is essential, especially for large projects.

Get at least 3 written quotes — Always written and itemised, breaking down labour, materials, and VAT separately. Be cautious of quotes that are significantly lower than the others — this can indicate shortcuts on materials or uninsured labour.
Check references from recent projects — Ask for the names and contact details of at least 2 previous clients. Visit completed work in person where possible.
Verify public liability insurance — Minimum £2 million cover for most domestic projects. Request a copy of the certificate, not just a verbal assurance.
Check CSCS cards and NVQ qualifications — A CSCS (Construction Skills Certification Scheme) card shows that a worker has the appropriate training and qualifications for their role on site.
Use a written contract — Specify start and finish dates, payment schedule, materials specification, and a snagging period. The Federation of Master Builders provides standard contracts. Never pay the full amount upfront — a 10–25% deposit is reasonable; staged payments tied to project milestones are best practice.
Check planning and Building Regulations — Confirm who is responsible for submitting the Building Regulations application and paying any associated fees. This is usually the contractor for extensions and conversions.

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Disclaimer: Average figures only. Always get written quotes specific to your project. NearbyTraders provides directory info only.