Here's a home improvement project nobody looks forward to: replacing a sewer line.
For homeowners, the mortgage, property taxes and insurance only account for a portion of the cost of owning an abode.
It's those surprise emergency repairs that can destroy your budget.
Indeed, 18% of homeowners polled by HomeServe USA said that they had no money set aside for surprise repairs. The company, a provider of home repair plans, conducted an online poll of 1,429 homeowners from Feb. 27 to March 1.
More than half of participants said they had a home repair emergency in the last 12 months.
"Part of that can be attributed to the fact that the median age of a home is about 40 years, so that's telling us that homes are aging," said Myles Meehan, vice president of corporate communication at HomeServe USA.
"People should be concerned about maintenance and being prepared for things to break down," he said.
Roof to foundation 
Those repairs can run the gamut — and each one can take a chunk out of your wallet.
For instance, the national average cost of installing or replacing asphalt shingle roofing is $7,280, according to HomeAdvisor, a website that helps homeowners find contractors.
Fixing or replacing faucets, fixtures and pipes averages out to $304, HomeAdvisor found.
Failure to tackle those problems right away can lead to higher expenses.
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For instance, repairing a sewer line — the plumbing that carries waste water away from your home — runs an average cost of $2,556, according to HomeAdvisor.
Depending on the severity of the problem, you might have to hire contractors to excavate your lawn or driveway to replace the line. That cost can run anywhere from $3,000 to $25,000, HomeAdvisor found.
"I think you have to understand that things break, problems happen and, if you've owned a home for six months or longer, you know that," said David Mendels, a certified financial planner and director of planning at Creative Financial Concepts in New York.
Saving for a disaster
