Foundation maintenance checklist
Updated August 2026
Foundation care is really water management: keep the soil graded to fall away from the house, run downspouts 4 to 6 feet past the wall, and measure any cracks once a year. Hairline cracks are normal in concrete; anything past about 1/4 inch, or that keeps growing, gets a professional look. Get the drainage right and a foundation lasts the life of the house. Ignore it and settlement repair runs $5,000–15,000 or more.
| Task | Interval | Effort |
|---|---|---|
| Walk the perimeter for pooling or standing water | After heavy rain | 10 min · DIY |
| Confirm soil drops 6 inches over the first 10 feet | Twice a year | 15 min · DIY |
| Check downspout extensions carry water 4 to 6 ft out | Twice a year | 10 min · DIY |
| Task | Interval | Effort |
|---|---|---|
| Measure and photograph every crack to track it | Yearly | 20 min · DIY |
| Scan basement and crawl space walls for new cracks | Yearly | 15 min · DIY |
| Note sticking doors and windows, a settlement tell | Yearly | 10 min · DIY |
| Task | Interval | Effort |
|---|---|---|
| Seal small, stable, non-structural cracks | 1–3 years | $20–100 DIY |
| Regrade or add drainage where water pools | As needed | $1,000–4,000 pro |
What neglect costs
Water is the whole story. Downspouts that dump at the wall and soil that slopes toward the house keep the footings sitting in saturated ground that swells, shrinks, and lets the foundation settle unevenly. Left alone, a widening crack becomes stair-step masonry failure, bowing walls, and jammed doors. Piering and stabilizing a settled foundation runs $5,000–15,000, and a full underpinning job can pass $30,000. Redirecting a downspout and dropping in a splash block costs about $30.
Leave these to a pro
Grading and gutter fixes are DIY, but a crack that is wider than a quarter inch, growing, leaking, or offset side to side deserves a structural engineer's report before any contractor sells you a repair. An engineer's evaluation runs $400–800 and is the best money you can spend here, because it tells you whether a crack is cosmetic or the sign of active settlement. The actual repair, from carbon-fiber straps on a bowing wall to helical piers under a settled corner, is firmly pro territory at $5,000–15,000.
This whole checklist ships as reminders in OnOtto: every task above, on the right schedule for your home, snooze-proof.
Load this checklist as remindersFrequently asked questions
Which foundation cracks should I worry about?
Thin vertical or hairline cracks under about 1/4 inch are usually just concrete curing and shrinking, and they are common in the first few years. Worry about horizontal cracks, stair-step cracks in block, anything wider than a quarter inch, cracks that keep growing between yearly photos, and offsets where one side sits proud of the other. Those point to soil pressure or settlement. The crack inspection page shows how to measure and track each type.
How do I keep water away from my foundation?
Two moves handle most of it. Grade the soil so it drops at least 6 inches over the first 10 feet from the wall, using fill dirt rather than mulch, which just holds water. Then extend every downspout to discharge 4 to 6 feet out with a buried pipe or a splash block, never straight down at the footing. On wet lots, a French drain or a regraded swale carries it the rest of the way. This is the cheapest foundation insurance there is.
Can I seal foundation cracks myself?
Small, stable, non-structural cracks in poured concrete are a reasonable DIY job with a polyurethane or epoxy injection kit that runs $20 to 100. Clean the crack, set the ports, and inject from the bottom up. What you should not do is caulk over a crack that is actively moving or leaking under pressure, because it will just reopen and you will have hidden the evidence. Confirm it is cosmetic first. The crack-sealing page covers when to seal versus call.
How long does a foundation last?
A poured concrete or block foundation can last 80 to 100 years, or the full life of the house, as long as water is kept away from it. The footings and walls do not wear out on a schedule the way a roof does; they fail from drainage, expansive clay soil, tree roots, or poor original construction. That is why maintenance here is about the yard and the gutters, not the concrete. See how long a foundation lasts for what shortens it.