Most Homebuyers Discover Hidden Costs After Closing. The Data Already Existed Before They Made an Offer

Written by:

Steve Marcinuk

Date:

04 Aug 2026

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Insurance companies already know what’s wrong with a house before a buyer makes an offer. They know the roof age, the flood exposure, the permit history. Buyers typically don’t have access to that same information until after closing, or never at all.

That gap between what insurers know and what buyers see is not a marginal oversight. It’s a structural feature of how home sales work: disclosure rules generally require sellers to report only what they personally know, not what’s actually discoverable about a property. A flood event before the current owner’s tenure, an unpermitted renovation, an aging sewer line, none of it has to surface unless someone goes looking for it.

A small number of companies have begun building pre-offer risk reports meant to close that gap, pulling hazard, permit, system-age, and repair-history data into a single view before a buyer ever makes an offer, the kind of consolidated picture that has long existed for underwriters but rarely for buyers. Bob Frady, CEO & Co-Founder of PropertyLens, one such company, frames the timing problem buyers face bluntly: “The worst time to make a multi-hundred-thousand-dollar decision is when you first fall in love. That’s a terrible time to make that kind of a decision.”

The Cost That Shows Up After Closing

Post-purchase repair costs are common enough that they function almost as a hidden second price tag on a home. According to PropertyLens data, most homes carry between 2% and 8% of the listing price in anticipated repair costs after closing, with some running higher.

The costs aren’t concentrated in one category. System ages – heating, roofing, sewer lines – account for much of what surprises buyers. Inspectors typically check whether a system functions, but not how old it is or whether past renovation work was permitted. Frady points to a case in Nashville where a home showed extensive renovation with no permits pulled; the inspection turned up structural problems requiring $35,000 in repairs, caught only because the buyer hadn’t waived the inspection contingency.

Sewer lines are a similar blind spot, excluded from standard inspections, and expensive when they fail. “Trees love sewer lines,” Frady notes. “And if it backs up, it creates a lot of problems for everybody.”

Who Actually Feels This Gap

Demand for this kind of data doesn’t map cleanly onto first-time buyers, who might seem like the obvious audience. Frady says the stronger pull tends to come from repeat buyers who’ve already been surprised by post-purchase costs once. “If you’ve bought a home before, you know something’s hiding,” he says. That group tends to want as much information as possible before negotiating – not to avoid buying, but to buy with realistic cost expectations.

First-time buyers still stand to benefit, particularly in markets where compounding costs can push a home from affordable to unsustainable. Frady cites a Minneapolis property where taxes rose 8.5%, and insurance climbed 10% in a single year, increases that, compounded over several years, change the math on what a home actually costs to keep.

The Disclosure Framework’s Structural Gaps

The current disclosure system runs largely on a “buyer beware” basis. In most states, sellers only have to disclose what they personally know, which means a flood event before their ownership, or an untested radon reading, can legally go unmentioned.

Some states are tightening the rules – Florida now mandates flood disclosure, and Massachusetts prohibits waiving the home inspection contingency – but the patchwork of 50 different standards leaves protection uneven across the country.

There’s also a structural incentive problem underneath the disclosure rules themselves: buyer’s agents are typically paid out of the seller’s side of the transaction. “There’s an inherent conflict in the way the whole process works – nobody wants to surface these problems, because it impacts the ability to close the deal,” Frady says. Sellers want the highest price, listing agents want the deal closed, and buyer’s agents are paid from the same commission pool, which means no party in a standard transaction has a financial incentive to flag risk before an offer is made.

How Market Conditions Change the Value of the Data

What this kind of information is actually used for shifts with market conditions. In colder markets with excess inventory, buyers can use risk data directly in price negotiations. Frady notes that Florida holds roughly 14% of homes currently for sale nationally despite accounting for about 8% of the population, the kind of oversupply that gives buyers room to negotiate on price using known issues.

In hotter markets, where inspection contingency waivers are common, the same data serves a different purpose: helping buyers budget for issues they’ll simply absorb rather than negotiate away.

For investors, the calculus is more binary. “Investors’ job is to take emotion out of the buying process and run the numbers,” Frady says. “They don’t care about the dream. They care about whether they can make money on a property.” Flood zone status, he adds, is often the single data point that most frequently changes a decision, particularly for investors who treat it as an outright disqualifier.

Roof Age and the Insurance Cliff

One risk category ties property condition directly to ongoing cost in a way that’s easy to miss. After a roof passes a certain age – seven years in Texas, ten years in most other states, according to Frady – insurance coverage commonly shifts from guaranteed replacement cost to actual cash value. If a storm damages an older roof after that point, the payout may not cover full replacement, leaving the difference to the homeowner.

Frady notes that even he didn’t have this information handed to him: his own roof’s replacement date wasn’t disclosed when he bought his current home, and he had to ask. “The knowledge from the previous owners generally goes away with the transaction,” he says. “But the data records last as long as we have them.”

Affordability as the Overriding Headwind

Any business tied to real estate transactions – agents, inspectors, data providers alike – is ultimately dependent on transaction volume, and that volume is historically low. Roughly 4.05 million homes sold last year, among the lowest totals in recent history, as homeowners locked into 3% mortgages hold onto their properties and the average first-time buyer’s age climbs from 29 fifteen years ago to close to 40 today.

For buyers navigating this slower market, the math is straightforward: fewer transactions may mean less competitive pressure in some areas, but the homes on the market still carry the same hidden costs they always have. Knowing those costs before making an offer remains the difference between a negotiated price and one simply absorbed after the fact.

About the Expert: Bob Frady is CEO and Co-Founder of PropertyLens, a company building pre-offer risk reports for home buyers that consolidate hazard, permit, system-age, and repair-history data before a purchase decision is made.

This article is based on information provided by the expert source cited above. It is intended for general informational purposes only and does not constitute legal, financial, or real estate advice. Readers should conduct their own research and consult qualified professionals before making any real estate or financial decisions.