Home Maintenance Calculator
| Home value | 1% rule per year | Per month | 2% rule per year |
|---|---|---|---|
| $200,000 | $2,000 | $167 | $4,000 |
| $350,000 | $3,500 | $292 | $7,000 |
| $500,000 | $5,000 | $417 | $10,000 |
| $750,000 | $7,500 | $625 | $15,000 |
The 1% rule - budget one percent of your home's value every year for maintenance - is personal-finance folklore with real machinery underneath: roofs expire at 20-25 years, HVAC at 15, water heaters at 10, paint at 7, and the expirations average out near that line for a normal house. Enter your home's value and the calculator turns the rule into a monthly savings target with a conservative 2% sibling.
Bottom line: $400,000 home means $4,000 a year, $333 a month, into a maintenance fund that exists so the roof never surprises you. The 2% rule ($8,000) is for older homes, harsh climates, or anyone who has met a plumber on a Sunday.
The honest part: the rule is a budgeting heuristic, not an appraisal - a new-build spends under 1% early and stockpiles; a 1960s special spends the 2% and then some. The value of either rule is the same: maintenance money that exists in advance turns emergencies into invoices.
How to use
- Enter your home's value (or rebuild cost - the maintenance math tracks the structure, not the land).
- Budget the 1% figure monthly - a separate account is the difference between a fund and a theory.
- Choose 2% honestly: homes over ~40 years old, cold or coastal climates, and mature trees all argue for the conservative line.
Frequently asked questions
How much should I budget for home maintenance per year?
The classic answer is 1% of home value per year - $4,000 on a $400,000 house, or $333 a month set aside. The honest refinement: 1% is the average a mature home needs; new builds run under it for a decade, and older homes run at the 2% line or above. The calculator shows both so the choice matches your actual house, not the average one.
Why budget maintenance at all if years can pass with nothing breaking?
Because home maintenance is lumpy in a way groceries are not: five quiet years and then a $12,000 roof. The fund's job is to convert that spike into the flat monthly number, and the peace-of-mind dividend is measurable - the maintenance-funded homeowner fixes things when they are small, which is why the same house costs its second owner half as much.
What are the big-ticket maintenance items and when do they hit?
The expirations to calendar: roof every 20-25 years (asphalt; longer for metal and tile), HVAC at 15, water heater at 10-12, exterior paint every 7-10, and appliances on a 10-15 year drift. None of these are emergencies if the 1% fund exists - which is the entire argument for the rule.
Should I use my home's value or its rebuild cost?
Rebuild cost (what a contractor charges to reconstruct the structure) is the truer base, because the land under your house does not need a roof - in land-expensive cities that makes the 1% rule overbudget. For most owners the two are close enough that the simple value input works; the calculator's number is the budget, not a tax assessment.