Estimate how much to set aside each year and each month for repairs and upkeep. Compare three common rules of thumb: 1% of the home's value, a cost per square foot, and an age-adjusted percentage for older homes, plus a 10-year projection.
Last updated:
Your home
$
sq ft
years
$/ sq ft / yr
Rule of thumb: about $1 per sq ft per year.
Method
Main estimate based on
%
Enter your values to see the result.
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How to use the Home Maintenance Cost Calculator
Enter the home's value, square footage and age.
Adjust the cost per square foot if you know typical costs in your area.
Choose the method for the main estimate: 1% rule, per square foot or age-adjusted.
Set a yearly cost increase for the 10-year projection.
Press Estimate budget and set aside the monthly amount in a separate savings account.
The three budgeting rules
1% rule: annual budget = home value × 1%
Square-foot rule: annual budget = square footage × cost per sq ft (often $1)
Age-adjusted rule: annual budget = home value × a percentage based on the home's age
Monthly savings = annual budget ÷ 12. Example: a $400,000, 2,000 sq ft home built 25 years ago gives $4,000 (1% rule), $2,000 (square-foot rule) and $8,000 (age-adjusted, 2%) per year.
Age-adjusted percentages used
This calculator uses the following simple schedule, based on the common advice to budget 1% for newer homes and more for older ones. Adjust your plan for the actual condition of the roof, HVAC and plumbing.
Age of home
Budget (% of value per year)
On a $400,000 home
Per month
Under 10 years
1.0%
$4,000
$333
10–19 years
1.5%
$6,000
$500
20–29 years
2.0%
$8,000
$667
30–49 years
2.5%
$10,000
$833
50 years or more
3.0%
$12,000
$1,000
Frequently asked questions
What is the 1% rule for home maintenance?
It suggests budgeting about 1% of your home's value each year for maintenance and repairs. A $400,000 home would need about $4,000 a year, or $333 a month. It is a rough guide that works best for homes in average condition.
What is the square-foot rule?
It suggests about $1 per square foot per year, so a 2,000 sq ft home would need about $2,000 a year. It is less affected by high property prices in expensive areas, where the 1% rule can overestimate.
Why do older homes cost more to maintain?
Roofs, water heaters, HVAC systems, windows, plumbing and wiring have limited lifespans, so older homes face more replacements. The age-adjusted rule in this calculator raises the percentage from 1% for homes under 10 years old to 3% for homes 50 years or older.
What does home maintenance include?
Routine upkeep such as servicing the heating and cooling, gutter cleaning and painting, plus repairs and replacements like a roof, water heater or appliances. Cosmetic upgrades and renovations are usually budgeted separately.
Should I save the money even if nothing breaks?
Yes. Many maintenance costs are large and infrequent, such as a new roof. Saving the monthly amount in a dedicated account means the money is there when a big repair comes up instead of going on a credit card.
Which method is most accurate?
None is exact. Use the range between the methods as a guide, then adjust for climate, the condition of major systems and your own records of past repair costs.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.