Home repairs that can run into the thousands — and the warning signs buyers should not overlook

Buying a house is often seen as a major financial achievement, but for many Americans, the strain does not end once they get the keys.

From worn-out roofs and failing furnaces to outdated wiring and damaged sewer lines, keeping a home in good condition is becoming another costly responsibility for owners already dealing with high mortgage payments, insurance premiums and property taxes.

According to LendingTree, the typical home improvement project cost $2,113, a 76.1 percent increase from 2015 after inflation is taken into account.

Routine upkeep adds another $1,433 a year on average, and that rises to $1,706 for homes built before 1940.

Those averages may still understate the burden for owners facing major repairs. Replacing a roof, plumbing or electrical system can quickly cost thousands, forcing families to use savings or take on debt just to keep a house safe.

David Garner, CEO of Cashflow Rentals, said he learned firsthand how expensive it can be to delay replacing aging systems.

From 2016 to 2022, Garner's company grew to 124 rental properties by buying lower-cost homes and making cosmetic updates. But relying on temporary fixes instead of replacing old systems eventually backfired when several big repairs came due at once.

Now the business owns 30 rental properties across the Midwest, and Garner said major systems are replaced before tenants move in.

A renovation project on a three-bedroom, one-bathroom home in Kansas City shows how fast expenses can climb.

The house was purchased for $50,000 in February 2026, but it took $90,000 to transform it into a five-bedroom, two-bathroom property.

The roof alone cost $8,000, the water line $6,000, the furnace and air conditioning system $6,000, and the water heater $1,500. The remaining $68,500 went toward interior work, a basement conversion and plumbing and electrical upgrades.

Those four core systems accounted for $21,500, creating a five-figure bill before any cosmetic improvements such as new countertops or flooring.

Garner said labor, materials and contractor overhead are all pushing bills higher. In his experience, materials have increased by roughly 20 percent since 2023, while the cost of running a contracting business has risen with insurance, vehicle expenses, wages and licensing.

He also pointed to immigration enforcement as a factor affecting the construction workforce.

A survey by the Associated General Contractors of America and NCCER found that 29 percent of contractors reported an impact from immigration enforcement in the previous six months, while 12 percent said workers had left or stopped showing up.

Mitch Coluzzi, co-founder and head of construction at real estate firm SoldFast, also cited rising material prices and a shrinking labor pool as major reasons renovation bills keep rising.

He said older homes can be especially expensive to maintain because of deteriorating materials, outdated building methods and aging systems such as knob-and-tube wiring and polybutylene plumbing.

Properties that have gone decades without major updates can leave owners facing several expensive repairs at the same time.

Coluzzi also warned that homeowners need to be realistic about whether a renovation will actually pay off.

Many projects do not recover their full cost at sale, he said, and serious issues with a home's foundation, framing or essential systems can make selling a better financial choice than continuing to pour money into repairs.

For electrical work, Bert Delgado, owner of ElectriciansX, a licensed electrical contractor in Cape Coral, Florida, said three forces are driving costs higher: materials, code requirements and a shortage of licensed workers.

Copper wire, breakers and electrical panels are far more expensive than they were a decade ago, Delgado said. Replacing an older electrical component can also trigger additional work to meet current code, including new grounding, arc-fault breakers and permit and inspection fees.

The issue can be especially pressing in Southwest Florida, where Delgado said some insurers will not renew policies on homes with older Federal Pacific or Zinsco electrical panels.

That can turn a repair a homeowner hoped to delay into a several-thousand-dollar job that has to be completed before an insurance deadline.

Delgado advised buyers to get an electrical inspection before purchasing a home or renewing coverage, and to deal with warning signs such as warm outlets or breakers that keep tripping before they become emergencies.

Older homes can be especially costly because several major systems may reach the end of their useful life at about the same time.

Garner said he closely examines sewer lines, foundations, wiring and cast-iron drain pipes when evaluating older properties. These problems can be expensive to find and repair, especially when years of deferred maintenance have allowed damage to spread.

Financial pressure is also changing how people think about renovation.

John Salvatore Gelfusa, a Michigan-licensed builder with more than 30 years of experience and president of the remodeling firm HomeWorks CGO, said homeowners are increasingly choosing to improve their current home rather than buy another one.

For many, location is the deciding factor. If they like where they live, they may prefer to upgrade the house they already own instead of paying the costs of selling and moving, especially if a new mortgage would come with a higher interest rate.

Gelfusa said homeowners should budget one percent to four percent of a home's value each year for maintenance and repairs, following a Fannie Mae guideline. On a $400,000 home, that would mean $4,000 to $16,000 annually, though newer homes may cost less and older properties more.

He stressed that this is only a guideline, not a forecast of what every household will spend.

Homeowners should also separate repairs that preserve a property's value from upgrades that are mainly cosmetic, he said.

Fixing a leaking shower can prevent costly water damage, while replacing a shower that works fine simply for appearance is a different kind of expense.

Garner said his own rental portfolio typically spends about $2,500 per property each year on preventive maintenance, including servicing heating and cooling systems, flushing water heaters, cleaning gutters and handling small repairs.

Once surprise breakdowns are added in, the annual cost can top $5,000 per home depending on its condition and upkeep.

For homeowners already stretched thin by everyday expenses, an unexpected repair may mean putting the bill on a credit card or delaying other goals. LendingTree found that 6.3 percent of home improvement projects were paid for with credit cards or store cards.

Garner said he has bought homes from owners who could no longer afford to maintain them, including landlords who kept fixing old systems until the accumulated costs became unmanageable.

His advice is to review the condition and age of major systems, including the roof, heating and cooling, water and sewer lines, and electrical components, and estimate which ones may need replacement within the next five years.

Whenever possible, planning ahead for replacements can help homeowners avoid the expense of an emergency failure, he said. But if the likely repair bill would take up a large share of their equity and they cannot afford the work, selling before a major system fails may be worth considering.

Coluzzi said the choice to renovate or sell also depends on how severe the problems are and whether the owner wants to improve daily life or recover money spent on the property.

Some upgrades may make a house more attractive, he said, but major problems with core systems can make selling the more sensible financial move.

For homeowners who cannot afford to move, the fallback is to focus on essential repairs, build a maintenance fund when possible and fix small issues before they grow into larger ones.