Why Do FHA Loan Limits Vary by County?
A borrower comparing FHA loan limits across two neighboring counties can find surprisingly different numbers, and the reason has less to do with the program itself than with the cost of housing in each area.
The short answer
FHA loan limits vary by county because they’re designed to track local housing costs: areas where homes typically sell for more get a higher maximum loan amount, while lower-cost areas get a lower ceiling. The limits are set using local median home prices and are updated periodically by the government agency that administers the program. A borrower in a high-cost metro area and a borrower in a lower-cost rural county can face very different maximums for the same type of loan.
The logic behind a local ceiling
An FHA loan is designed to help make homeownership accessible, particularly for buyers who might not qualify for a conventional mortgage on the same terms. If the program used a single nationwide limit, that number would be far too low to be useful in expensive metro areas and unnecessarily high in places where modest homes cost a fraction of that amount. Tying the limit to local housing costs keeps the program relevant in both settings, rather than favoring one type of housing market over another.
How the numbers actually get set
Loan limits are generally recalculated on a set schedule using data about median home prices in each county, then compared against a national floor and ceiling that bound how low or high any single county’s limit can go. Counties with home prices well above the national baseline are assigned higher limits, up to the ceiling; counties closer to or below the national median typically sit near the program’s floor amount. Because this is based on housing cost data that shifts over time, the specific dollar figures change from one update to the next and are always worth checking directly rather than assumed from memory.
What this means in practice
- High-cost areas. Buyers in expensive metro counties get access to larger FHA-insured loan amounts, which can make the difference between qualifying for a property in that market or not.
- Lower-cost areas. Buyers in counties with more modest home prices see lower limits, which generally still align with what a typical home costs locally.
- Borrowing above the limit. A purchase price above the local FHA limit generally requires either a larger down payment to bring the loan amount under the cap, or a different loan product such as a conventional mortgage or a jumbo loan for higher-priced properties.
How this compares to other government-backed limits
FHA isn’t the only program with geographically adjusted limits — conforming loan limits for conventional mortgages follow a similar county-by-county logic, and both sets of numbers are typically updated together on a similar schedule. They aren’t identical figures, though, so it’s worth checking the specific limit for the specific loan type being considered rather than assuming FHA and conventional limits match in a given county.
What to weigh
Because these limits are set by a government agency and adjusted periodically based on housing cost data, the only reliable way to know the current limit for a specific county is to look it up directly rather than rely on a number that may already be outdated. Understanding that the limit reflects local housing costs, not the borrower’s individual situation, helps explain why the same loan program can look so different from one county to the next.