FHA Loan Limits in Ada County, Idaho (2026)
In Ada County, the 2026 FHA loan limit for a one-unit home is $705,000. As a designated high-cost area, Ada County carries an FHA limit above the national floor of $541,287.
| Property Type | 2026 FHA Loan Limit |
|---|---|
| One-unit (single family) | $705,000 |
| Two-unit (duplex) | $902,595 |
| Three-unit (triplex) | $1,091,089 |
| Four-unit (fourplex) | $1,355,945 |
Example FHA payment in Ada County
Here is an illustrative FHA payment on a $510,000 home with 3.5% down ($17,850), an example 6.25% rate, and a 30-year term. Rates change daily — get notified when they move.
| Payment Component | Monthly |
|---|---|
| Principal & interest (6.25%, 30 yr) | $3,083 |
| FHA mortgage insurance (MIP) | $226 |
| Property taxes (est.) | $446 |
| Homeowners insurance (est.) | $117 |
| Estimated total payment | $3,872 |
How FHA loan limits work in Idaho
FHA sets a separate loan limit for every U.S. county each year. The "floor" of $541,287 applies to lower-cost areas, while high-cost metros can go as high as the national ceiling of $1,249,125 for a single-family home. Ada County's limit reflects local home prices relative to the conforming loan limit set by the FHFA.
If you are buying a two-to-four unit property in Ada County, FHA limits are higher — $902,595 for a duplex and up to $1,355,945 for a fourplex — and you can use FHA financing to "house-hack" by living in one unit and renting the others.
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Frequently Asked Questions
- What is the FHA loan limit in Ada County for 2026?
- The 2026 FHA loan limit in Ada County, Idaho is $705,000 for a one-unit home, $902,595 for a duplex, $1,091,089 for a triplex, and $1,355,945 for a fourplex.
- How much down payment do I need for an FHA loan in Ada County?
- FHA requires a minimum 3.5% down payment with a credit score of 580 or higher. On a $510,000 home that is about $17,850.
- Is Ada County a high-cost FHA area?
- Yes. Ada County is a designated high-cost area, so its FHA limit ($705,000) exceeds the national floor.