How Much Rent to Charge: Comps, Costs and Vacancy Math

Set rent from the market, not from your mortgage. Find three to five comparable rentals nearby that leased recently, adjust for real differences in size, condition and amenities, and price within that range. Then check two things. First, make sure the rent covers your costs with room for vacancy and repairs. Second, make sure it doesn't stall the listing, because a month of vacancy usually costs more than a slightly lower rent. Finally, check whether your state or city limits rent or later rent increases. That's the whole method; the rest of this guide shows how to do each step.

Step 1: Pull comparable rentals

A comparable ("comp") is a unit a renter would weigh against yours: the same neighborhood or school zone, a similar type (single-family, duplex, apartment), and within a bedroom or so of yours. Leased units tell you more than listings do, because a listing price is only an asking price. Sources include:

• Listings that went off-market recently in your area, and how long they sat
• Local property managers, who know what actually leased
• Your own past leases, if the unit has rented before

Note each comp's rent, beds and baths, square footage, condition, parking, laundry, outdoor space, utilities included, and pet policy.

Step 2: Adjust for differences

Adjust each comp's rent toward your unit. If a comp includes water and trash and yours doesn't, subtract what those cost a tenant. If yours has in-unit laundry and the comp has none, add a little. Keep adjustments small and based on what renters in your market pay for. After adjusting, your comps should cluster in a range. Start near the middle, or the top if your unit is clearly better.

HUD's fair market rents are a useful sanity check, not a target. They are generally set at the 40th percentile of local rents for standard-quality units, including utilities (24 CFR 888.113). If your asking rent is well under that figure, you may be leaving money on the table. If you plan to accept housing vouchers, the PHA will also check your rent against comparable unassisted units (24 CFR 982.507); see Section 8 for landlords.

Step 3: Check the rent against your costs

Your costs don't set the market rent, but they tell you whether the deal works at that rent. Add up:

• Mortgage principal and interest
• Property taxes and insurance
• HOA dues and any utilities you pay
• A maintenance and capital-repair reserve
• A vacancy allowance
• Property management, if you use it

The rental property calculator runs this for you. If market rent doesn't cover these costs, raising the rent above the market won't fix it; the unit will just sit empty. See real estate investment analysis for evaluating the numbers.

Step 4: Do the vacancy math

Every empty month costs a full month's rent. A hypothetical example: on a $2,000 unit, one vacant month costs $2,000. Pricing at $2,100 earns an extra $100 a month, or $1,100 over the 11 months left in the year. If the higher price adds even one more vacant month, you come out about $900 behind. That's why a price that's slightly under the market but leases quickly often beats an ambitious one.

Watch the response to your listing. Lots of inquiries and showings in the first week suggest the price is at or below the market. Silence after a week or two usually means it's too high, the photos are weak, or the listing is reaching the wrong audience.

Step 5: Set screening to match the rent

Many landlords require gross income of about 2.5 to 3 times the monthly rent. That's a business choice, not a law. Set it before you list and apply it to everyone. The rent-to-income ratio calculator shows what income a given rent implies. In places that protect voucher holders or other sources of income, count all lawful income consistently; see how to screen tenants.

Legal limits on what you charge

• Same price for everyone. Charging different rent or terms because of race, color, religion, sex, disability, familial status or national origin violates the Fair Housing Act, and so do ads that state such a preference (42 U.S.C. § 3604(b)–(c)). Concessions and deposits should follow the same rule.
• Statewide rent caps. A few states limit increases on existing tenancies. California caps most units over 15 years old at 5% plus inflation, never more than 10% in 12 months (Cal. Civ. Code § 1947.12). Oregon caps increases at 7% plus CPI or 10%, whichever is lower, for buildings at least 15 years old (ORS 90.323). Washington limits increases to 7% plus CPI or 10%, whichever is lower, and bars increases in the first 12 months of a tenancy unless an exemption applies (RCW 59.18.700–.710).
• Local rent control. Cities such as New York City, Los Angeles, San Francisco, Washington, D.C. and St. Paul regulate rents on covered units. In a regulated unit, the legal rent may not be yours to choose.

The starting rent matters because later increases are measured from it. The rent increase laws by state cover notice periods and caps, and how to raise rent without losing tenants covers renewals. When you've settled on a number, the lease agreement generator puts it, along with the due date and late-fee terms, into a written lease.

Sources

Official sources cited above (checked 2026-10-30):

• 24 CFR 888.113, fair market rents methodology (Cornell LII)
• 24 CFR 982.507, rent to owner: reasonable rent (Cornell LII)
• 42 U.S.C. § 3604, discrimination in the sale or rental of housing (Cornell LII)
• Cal. Civ. Code § 1947.12, rent increase limits
• ORS chapter 90, residential landlord and tenant (ORS 90.323)
• RCW 59.18.700–.710, Washington rent increase limits