The usual suspects
- Scaffolding (£1,500–4,000 for a loft)
- Skips and waste (£300–400 each)
- Building control fees (£800–1,500)
- Structural engineer (£600–1,500)
- Party wall surveyor (£1,000–3,000 if neighbours appoint their own)
- Electrical certificate and consumer unit upgrade
- Making good to neighbouring surfaces
- Decoration
- Contingency (10%)
- VAT (20%)
- Temporary works and protection
- Removal and reinstatement of services
Why they get left out
Some builders quote low to win the job and add the rest as "extras". Others assume you know. Either way the number you compare is not the number you pay.
What Quote Check adds
A missing items table with estimated cost impact and a normalised total so that three quotes become comparable.
General information for England, not advice on your property. Rules change; we check the current position in every report.