Buying Before You Sell in the Teton Valley
Program and regulatory figures verified September 25, 2026. Details change; confirm your scenario with us.
One Idaho county carries a conforming ceiling $416,375 above the rest of the state, and it is not the one with the famous ski resort.
The limit, and why it exists
Teton County, Idaho has a 2026 one-unit conforming limit of $1,249,125 and a two-unit limit of $1,599,375. Every other Idaho county is at $832,750.
The reason is how limits are drawn. FHFA sets them by metropolitan area, and Teton County sits in CBSA 27220, the Jackson, Wyoming-Idaho area. Driggs and Victor inherit the limit calculated for a market centred across the Teton Pass.
What the higher limit actually buys you
More than a bigger loan. It keeps more purchases inside agency financing, and agency financing is where the departing-residence rules are published rather than negotiated.
Fannie Mae B3-3.8-05, dated 09/02/2026, sets out the offset (gross rent times 75% less that property's PITIA, offsetting that payment only), the documentation (complete appraisal with market rents, a Form 1007, or market tools with at least three comparable rentals, and no leases), and the reserve requirement (six months on the vacated home under 12 months of property management experience).
Above a conforming limit those become investor-specific, deeper on reserves, and sometimes unavailable until the departing sale actually funds. Staying conforming is worth real flexibility on a buy-before-you-sell file. See the jumbo page.
The Blaine County contrast
Idaho's best-known resort county is Blaine, containing Sun Valley, Ketchum and Hailey. It sits at the $832,750 baseline.
So the two Idaho resort markets are $416,375 apart in conforming ceiling, and the gap runs the opposite way to their reputations. The rule of thumb is simply to look the county up rather than reason from how expensive a place feels.
The exemption is the same here
Idaho Code 63-602G(1) exempts the lesser of $125,000 or 50% of market value, so on Teton Valley values the flat $125,000 applies. Subsection (2)(a) requires owner-occupancy, and Idaho has no tenant exception, so the departing home forfeits the exemption on every structure. Detail on the exemption page and the owner-occupancy page.
Structures compared on the structures page.
Frequently asked questions
What is the conforming loan limit in Teton County, Idaho?
$1,249,125 on one unit and $1,599,375 on two units for 2026. Teton County sits in CBSA 27220, the Jackson, Wyoming-Idaho area, and inherits that area's high-cost limit. It is Idaho's only county above the $832,750 baseline.
Why does Driggs have a higher loan limit than Boise?
Because conforming limits are set by metropolitan area rather than by state. Teton County, Idaho shares CBSA 27220 with Jackson, Wyoming, so Driggs and Victor carry the limit calculated for that market: $1,249,125 against $832,750 in Ada County.
Does Sun Valley have a high-cost conforming limit?
No. Blaine County, containing Sun Valley, Ketchum and Hailey, is at the $832,750 baseline. Teton County is the only Idaho county above it, which puts the two resort markets $416,375 apart in the opposite direction from what their reputations suggest.
Mike Certo · NMLS #260555 · Cornerstone First Mortgage NMLS #173855 · Equal Housing Lender. Educational content about financing, not a loan commitment and not legal, tax, or real estate advice. Idaho's homeowner's exemption is administered county by county under Idaho Code 63-602G and 63-703, and eligibility depends on your facts; your county assessor, your CPA or an Idaho attorney, and your real estate agent each handle their own part. Loans are subject to borrower and property qualification.