London Victorian terrace: £82k rear extension delivered on budget
"The estimate landed within 3% of the winning quote. We saved weeks of back-and-forth and avoided two builders who were quietly £18k over the market."
A Hackney homeowner used BuildPriceIQ to scope a 22 m² rear extension, shortlist 3 verified builders and lock a fair price before quotes came in.
Challenges
- Party-wall agreement with two neighbours
- Steel beam over kitchen opening with limited rear access
- Conservation area — restricted to brick + slate finishes
Outcomes
- Builder selection in 9 days instead of 6+ weeks
- Final spend within 1% of BuildPriceIQ estimate
- Avoided a 28% overpriced quote thanks to the cost benchmark
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Disclaimer: This is an industry-informed estimate for guidance only — not a fixed quote, valuation, survey or legal advice. Figures are based on UK regional averages and the details you provided. Site-specific factors (access, ground conditions, structural surprises, planning constraints) can materially change the cost. Always confirm with a site inspection, written quotes from qualified UK tradespeople, and supplier pricing before committing to work. Build Price IQ accepts no liability for decisions made on the basis of these estimates.