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Buyer guide

The true monthly cost of owning a home

The mortgage is the headline. These line items decide whether you can actually afford the house.

Updated June 12, 2026 · 4 min read

What actually makes up the monthly number

  • Principal & interest — the loan payment at your rate and term
  • Property taxes — set by the local effective rate, on the home's value
  • Homeowners insurance — higher in flood, wildfire, or storm-exposed areas
  • HOA dues — plus the risk of special assessments
  • Utilities — scale with the home's size, age, and efficiency
  • Maintenance — a rule of thumb is ~1% of the home's value per year

Why list price is a misleading anchor

Two homes at the same price can cost very different amounts to own. A higher property-tax jurisdiction, an HOA, or a flood-zone insurance premium can add hundreds a month — enough to change what you can afford.

Estimate it before you offer

HomeInteli estimates the true monthly cost using the ZIP's effective property-tax rate and insurance, with an interactive mortgage calculator you can tune by down payment and rate. It's an estimate to plan with — not a lender quote — and it lands in every report. Paste a listing link to see the number for a specific home.

Check any listing in about a minute

Paste a Zillow, Redfin, or Realtor.com link. We locate the property and check its FEMA flood zone free — the full report unlocks the rest.

AI-generated · informational only · not advice — verify and decide for yourself.

Frequently asked

How much should I budget for maintenance?

A common rule of thumb is about 1% of the home's value per year, more for older homes or those with aging major systems. It's lumpy — some years nothing, then a roof — so set it aside monthly.

Why is my estimated payment higher than the mortgage calculator I used?

Most basic calculators show only principal and interest. The true cost adds property taxes, insurance, HOA, and utilities — which together often rival a meaningful share of the loan payment.

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