Budget roughly 1% to 4% of your home's value per year for maintenance, or about $1 per square foot per year. For a $400,000 home that's $4,000 to $16,000 a year. For a 2,000 square foot home, the square-footage rule lands you around $2,000. Use whichever is easier to remember as a starting estimate, then adjust up for an older home, a harsh climate, or repairs you've been putting off.
Both of these are rules of thumb, not promises. Some years you'll spend almost nothing. Other years a single failure eats the whole budget and then some. The point of setting money aside isn't to predict any one year. It's to make sure the expensive years don't catch you flat.
The two rules, and which to use
The percentage rule ties your budget to what your home is worth. One percent is the floor, and many people use it because it's easy to remember: set aside 1% of your home's value each year. Four percent is closer to what an older or harder-working home costs to keep up. If you're not sure where you land, start in the middle.
The square-footage rule is simpler still: about $1 per square foot per year. A 1,500 square foot home points to roughly $1,500 a year. It ignores your local market, so it's a rougher number, but it's a fine back-of-the-envelope figure when you don't know your home's value or just want something to start with.
Neither number is exact. Treat them as a way to size the jar, not as a guarantee of what falls in any given month.
What drives the number up
The starting estimates assume an average home in average shape. A few things push you toward the higher end of the range:
- Age. Older homes have older systems, and older systems fail more often. A 40-year-old house costs more to maintain than a new build, even when both are well kept.
- Climate. Hard freezes, heavy snow, coastal salt air, intense sun, and big swings in humidity all wear a house faster and add seasonal tasks.
- Deferred maintenance. The biggest multiplier is the stuff you've skipped. Small problems left alone don't stay small. A clogged gutter becomes a fascia repair. A slow drip becomes a subfloor.
- Size and complexity. More square footage, more bathrooms, a pool, a long driveway, mature trees near the roof. Every extra system is another thing to keep up.
What the budget buys
Most of your maintenance money goes to small, recurring things that are easy to ignore right up until they aren't. Servicing the HVAC and changing filters. Cleaning gutters. Resealing caulk and grout. Flushing the water heater. Checking the roof and the attic. Testing the sump pump before the wet season. Touching up exterior paint and trim before bare wood starts to rot.
None of these is dramatic on its own. Together, they're the whole game. Staying on top of the small tasks is what keeps the big, unbudgeted bills away. A serviced furnace lasts longer before it needs replacing, and HVAC replacement averages around $14,000. Clean gutters and good caulk keep water where it belongs, and the average water damage claim runs about $13,954. You're not just spending the budget. You're spending it so the five-figure surprises stay rare.
Good maintenance rhythm
- Monthly: check or change HVAC filters, run a quick look for leaks under sinks and around the water heater.
- Seasonally: clean gutters, test the sump pump, check the roof from the ground, swap smoke and CO detector batteries on a schedule.
- Twice a year: have the heating and cooling systems serviced by a professional, once before summer and once before winter.
- Yearly: flush the water heater, inspect caulk and grout and reseal as needed, walk the exterior for paint and trim that needs attention.
Set the money aside automatically if you can, the same way you'd treat any other bill. A small monthly transfer into a separate account turns a scary lump sum into something boring, which is exactly what you want a maintenance fund to be. When something does break, the money's already there.
Add reminders to the Dome mobile app to always stay ahead of your home maintenance.