A U.K. homeowner was frustrated to discover that replacing their roof could cost twice what their surveyor had estimated.
The disparity raised concerns and represented a substantial difference for a first-time buyer.
Here's what to know
The pre-purchase survey listed problems with the property and estimated repair costs, according to the homeowner's Reddit post. They had been living in their first house for roughly a year when they raised the issue.
Across various repairs, the homeowner reported costs ranging from 1.5 to five times the survey estimates of £20,000 ($27,000).
"In practice these prices are all drastically wrong," the original poster wrote.
The homeowner highlighted the roof's large size as relevant context. The roof had not yet been replaced, so the £40,000 ($54,000) figure reflected quotes from roofers and builders rather than a final bill.
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The estimates had delayed a step the homeowner wished they had taken sooner: asking contractors for quotes instead of relying on the survey.
More background
Commenters offered several possible explanations for the discrepancy, though none could establish why this particular survey's estimates differed so sharply.
One commenter, drawing on experience with commercial property, explained that surveyors commonly use price-book rates per square foot, naming BCIS as one source.
A detailed design and specification can help establish the roof structure's condition and identify upgrades required by building regulations. Without that detail, a contractor asked to quote for a replacement may include an allowance for uncertainty.
Chimney repairs provided one commenter with an example of a surveyor securing a lower price. Their surveyor had arranged the work for substantially less than the independent quotes they received. The commenter identified established contractor relationships and differences in the scope of work as possible reasons for pricing discrepancies.
The homeowner's higher quotes cannot automatically be attributed to rising prices or an inaccurate survey alone.
What can be done?
Giving roofers a shared brief was one commenter's recommendation for buyers facing similar repairs. The original poster could prepare a one-page specification and send identical copies to three roofing contractors.
Asking each roofer for itemized pricing could make it easier to check whether the quotes cover equivalent work. The specification would set out waste disposal and restoration requirements, scaffold provision, material choices, and the job's scope.
"I would look at a general survey primarily as a tool to help decide whether a purchase is a reasonable proposition, rather than for budgeting purposes for future maintenance," one commenter advised.
Where can I learn more?
Getting quotes is only part of the challenge; choosing a reliable roofer matters, too.
• In the U.K., a £5,500 roofing job left rain pouring in like a waterfall.
• In Scotland, a £3,750 roofing job led to £11,000 in damage amid scam concerns.
• A California homeowner's $32,000 reroofing contract grew by $13,000 after crews stripped three shingle layers.
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