Common Questions About Building Work in the UK

Practical answers to help you plan, budget, and hire with confidence. Grouped by topic so you can find what you need fast.

These answers are general guidance for UK homeowners and tradespeople. Planning rules, building regulations, and costs can vary by property, region, and local authority. Always check with the relevant authority or qualified professional for your specific situation.

Planning & Building Regs

Do I need planning permission for a house extension?

Planning Updated May 2026

Can I convert my garage without planning permission?

Planning Updated May 2026

Do I need building regulations approval for a new bathroom?

Building Regs Updated May 2026

What is a party wall agreement and do I need one?

Legal Updated May 2026

Do I need scaffolding for roof repairs?

Health & Safety Updated May 2026

Costs & Pricing

How much does a loft conversion cost in the UK?

Cost Guide Updated May 2026

How much does it cost to knock down an internal wall?

Cost Guide Updated May 2026

How much does underfloor heating cost to install?

Cost Guide Updated May 2026

Should I always get three quotes for building work?

Pricing Updated May 2026

Choosing Tradespeople

How do I find a good builder in the UK?

Hiring Updated May 2026

What qualifications should a plumber have in the UK?

Hiring Updated May 2026

Specific Trades

What is first fix and second fix in construction?

Building Updated May 2026

What is the difference between a combi and a system boiler?

Plumbing Updated May 2026

What's included in a full house rewire?

Electrical Updated May 2026

How long does plastering take to dry before you can paint?

Plastering Updated May 2026

How often should you replaster walls?

Plastering Updated May 2026

Can you tile over existing tiles?

Tiling Updated May 2026

How long does exterior paint last on a house?

Decorating Updated May 2026

How long does a kitchen refit take?

Kitchen Updated May 2026

Preparation

How should I prepare before my builder starts work?

Preparation Updated May 2026