Buying a Home in Affton, MO
What it actually costs to buy in this established St. Louis County suburb — real prices, monthly payments, income needed, and the local rules most buyers don’t know. From a local broker, not a national average.
What it costs to buy in Affton
Affton’s median sale price is about $266,016 — below the St. Louis County median. Here’s a rough monthly picture at that price:
20% down · 30-yr fixed
What you’d need to afford it
At Affton’s median, a typical buyer needs roughly $50,000–$60,000 in household income (less with more down, more if you carry other debt). Want to see where your budget actually reaches across St. Louis? Explore the affordability map to compare Affton with every nearby community.
Affton by the numbers
Source: U.S. Census Bureau, ACS 2024 5-year.
Run your Affton numbers
These are the same free tools that power this page — try them with Affton’s prices and your own situation:
Living in Affton: what buyers should know
The feel
Affton is an established unincorporated community in south St. Louis County, near Grant's Farm and the Grant's Trail recreational path. Housing is dominated by mid-20th-century ranches, bungalows, and brick homes from the area's postwar growth.
Schools
Affton is served by the Affton School District. For factual, source-based ratings, review the district’s Missouri DESE report card or its GreatSchools profile as you weigh your budget.
Local rules most buyers miss
Occupancy inspection: Affton is in unincorporated St. Louis County, where the County (not a city) handles occupancy permits — an occupancy inspection is generally required at a change of occupancy, and county inspection waits can run several weeks, so order it early. Confirm current requirements with the St. Louis County Public Works.
Property taxes: Missouri assesses homes at 19% of market value, and your bill depends on Affton’s combined St. Louis County and school-district levies. Taxes are a real line in your payment here — don’t estimate from a national calculator.
Good news: Missouri has no real-estate transfer tax, so that’s one closing cost you won’t pay.
How Affton compares to nearby communities
Median sale prices for Affton and its immediate neighbors (Redfin, May 2026):
| Community | Median price |
|---|---|
| Affton | $266,016 |
| Oakville | $363,713 |
| Crestwood | $332,552 |
| Mehlville | $246,779 |
| Sunset Hills | $685,645 |
Prefer a different price point? Compare Affton with the neighbors above, or see them all on the map →.
Buying in Affton with Better Rate Mortgage
We’re a St. Louis broker — we know Affton’s inspections, its taxes, and what it takes to win a home here. For qualified buyers, our $5,000 Seller Guarantee can make your offer stand out in a competitive Affton market by giving sellers extra confidence your financing will close.
Affton home-buying FAQ
How much does a home cost in Affton, MO?
What income do you need to buy in Affton?
Does Affton require an occupancy inspection?
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Sources & disclaimers. Median home prices: Redfin Data Center, 3-month sales-weighted average, as of May 2026. Payment and income figures are illustrative estimates for general education only, assume an illustrative rate and typical St. Louis County tax/insurance, and are not Better Rate Mortgage’s actual rates or a commitment to lend; your terms depend on your application. Confirm occupancy-inspection and permit requirements with your local building department. Reviewed by Sean Zalmanoff, Founder & Chief Loan Officer, Better Rate Mortgage (NMLS #239823). Company NMLS #2401335. Equal Housing Lender. Basemap © OpenStreetMap contributors, © CARTO.
