What to Expect from a Loft Conversion or Home Extension Quote: A Homeowner’s Guide

When requesting a quote for a loft conversion or extension, understanding what a detailed, honest quote should include helps you compare properly and avoid hidden costs.

What a Good Quote Should Include
  • Scope of work — structural carpentry, roof or floor framing, RSJ installation if required, staircase, insulation, finish frame work (first-fix), possibly second- fix.
  • Materials & timber specification — treated structural timber (or steel beams), compliance with building-reg standards, load-bearing specifications.
  • Labour breakdown — structural carpentry, roof work, joisting, staircase installation, clean-up, management, etc.
  • Timescales & milestones — start date, key structural phases, finishing phases, expected completion.
  • Compliance & certification — structural plans, building-reg compliance, inspection fees (if applicable), documentation.
  • Contingency and allowances — potential unforeseen work (e.g. extra structural reinforcement if the survey reveals problems), VAT or regulatory costs.
Why Clear Quotes Matter

A clear, detailed quote ensures you (homeowner) know exactly what you’re paying for and helps avoid surprises. It also helps compare different contractors fairly and ensures you’re not under-quoting vital structural or compliance work.

What to Ask When Quoting

“What’s the contingency for unexpected issues (old roof, structural problems, re-works)?”

“Does the quote include structural survey and RSJ (if needed)?”

“Are timber frames treated and to what specification?”

“Is the staircase included (if a loft conversion)? What type and finish?”

“Are first-fix and second-fix carpentry included or excluded?”

“Are building-reg compliance and any inspections covered?”