Just bought a resale home? Here’s your game plan.

A resale home is the opposite of new construction: no warranty clock, but no mystery either. The inspection happened, the systems have a track record, and with a little organizing you can turn “what did I just buy?” into a clear, ranked plan. You don’t need to fix everything in year one. You need to know what you’ve got, what’s living on borrowed time, and what order to spend in.

Start with your inspection report

Your inspection report isn’t a formality you file away after closing — it’s the best to-do list you’ll ever get for this house, written by someone who crawled the attic and ran every faucet. Pull it back out and re-read it as a prioritized punch list:

• Safety first — anything electrical, gas, or structural the inspector flagged.
• Gets worse if ignored — roof issues, drainage, active leaks, anything letting water in.
• Plan-and-budget — aging systems noted as “near end of life.”
• Cosmetic — the stuff that can wait until you’ve got time and money.

If you waved the inspection to win the offer, or want a fresh set of eyes now that you own it, it’s never too late to bring an inspector back. (My Houston home inspection cost guide breaks down what that runs.)

Know your systems — and how much life they have left

The single most useful thing you can do is write down the age of each major system and compare it to how long that system typically lasts. General ranges:

• Roof (asphalt shingle): ~15-30 years — 3-tab shingles 15-20, architectural 20-30. Houston sun and storms push toward the shorter end.
• Central AC: ~10-15 years; furnace: ~15-25. Here, the AC is the one that matters — it runs most of the year.
• Water heater: tank ~8-12 years; tankless ~15-20+.
• Electrical panel: ~25-40 years, but older panels (and certain discontinued brands) may need attention sooner.
• Sewer line: varies widely by material — and on older Houston homes it’s a real watch item (more below).

None of these are exact, and a well-maintained system outlives its range. But if your roof is 22 and your AC is 14, you now know what’s coming — and you can budget for a “when,” not get blindsided by an “if.”

Your first-year priorities

Regardless of age, a handful of moves are worth making in your first months:

• Re-key or change the locks — same logic as any move-in; you don’t know who has a copy.
• Service the HVAC — a tune-up tells you the real condition and resets the maintenance clock. Fresh filter, note the size.
• Flush the water heater — sediment builds up in our hard water and shortens its life; flushing is cheap.
• Check the attic and drainage — look for past leak stains, confirm insulation, and after a big rain, watch that water moves away from the foundation.
• Test smoke and CO detectors and replace anything older than ~10 years.

Older Houston homes have their own quirks

If your resale is a few decades old, a few Houston-specific things deserve attention:

• Foundation history. On our expansive clay, older slabs may have moved or been repaired. Ask for any repair records, watch for new cracks, and water the foundation consistently in dry spells. My Houston foundation guide covers what to look for and how to protect it.
• Cast-iron sewer lines. Many older Houston homes have cast-iron drain lines that corrode and crack over decades, and mature trees send roots into the joints. A sewer scope (a camera run through the line) is cheap relative to a sewer repair that can run into the thousands — well worth doing if it wasn’t done before closing.
• Pre-2000 materials. Depending on the era, you may run into older wiring, galvanized plumbing, or materials that need a professional eye. Nothing to fear — just worth knowing.

Build a maintenance reserve

The big-ticket items on a resale — roof, AC, water heater, sewer — are five-figure expenses when they come due, and on an older home several may land within a few years of each other. The fix is simple: set aside a little every month into a home reserve so those replacements are a planned expense, not an emergency on a credit card. A common rule of thumb is to budget roughly 1% of your home’s value per year for maintenance and replacements; adjust up for an older home. Get quotes early on the systems you know are aging, so the number you’re saving toward is real.

Do that, and you’re ahead of most homeowners. From here, your resale runs on the same seasonal rhythm as every house in town — that’s what the Houston home maintenance checklist is for.

Frequently asked questions

How long do the major systems in a home last?

General ranges: asphalt-shingle roof ~15-30 years, central AC ~10-15 and furnace ~15-25, tank water heater ~8-12 (tankless ~15-20+), electrical panel ~25-40. In Houston’s heat and storms, plan toward the shorter end for roof and AC, and use each system’s age as a budgeting guide.

What should I fix first after buying a resale home?

Safety and your inspection report first. Re-key the locks, test detectors, service the HVAC and flush the water heater, then work the inspection report as a ranked list — safety, then things that worsen if ignored (roof, drainage, leaks), then cosmetic. You don’t have to do it all at once; you do need the order.

Should I get a sewer scope on an older Houston home?

Yes, it’s worth it. Older Houston homes often have cast-iron sewer lines that corrode over time, and tree roots invade the joints. A camera scope is inexpensive next to a sewer repair, so it’s smart to do early if it wasn’t done before closing.