In-depth analysis

Should you buy an STR in Sun Valley in 2026?

Only with capital depth. Sun Valley is one of the original American destination ski resorts, with a deeply established second-home buyer base, the Sun Valley Resort itself anchoring brand awareness, and surprising summer activity (Ketchum’s restaurant scene, the Pavilion concert series, fly-fishing the Big Wood River). ADR around $278 and 59% occupancy generate solid RevPAR — but the smallness of the market means inventory turnover is thin and entry premiums are real.

Regulation: where the city stands

Idaho state preemption (Idaho Code 55-2705) prevents an outright municipal STR ban.
City of Sun Valley and City of Ketchum (adjacent, much larger population, where most of the rental inventory actually sits) require registration and lodging tax collection. Ketchum has tightened administrative requirements in recent years; verify current rules.
Blaine County rules apply outside city limits — typically still permissive.
HOA / condo association rules at the Sun Valley Resort base properties are extensive — many properties have mandatory rental-program participation.

See the City of Ketchum business licensing page for current registration; Sun Valley proper has very limited residential inventory.

The market by the numbers

Metric	Sun Valley	Park City	Big Sky
ADR	$278	$415	$289
Occupancy	59%	60%	56%
RevPAR	~$164	~$249	~$162

Sun Valley sits one tier below Park City and Aspen on ADR, but with a meaningfully more relaxed regulatory environment than either.

Submarkets that matter

Sun Valley Resort base (Sun Valley proper) — purpose-built resort lodging, mandatory rental-program properties, premium acquisition.
Ketchum (Warm Springs corridor, downtown) — most of the actual rentable inventory lives here. Walkable to lifts at Warm Springs and to Ketchum’s restaurant district.
Elkhorn — gated golf/condo community, lower acquisition than Sun Valley base, established rental program.
Hailey (downvalley) — local-residential character, lower acquisition, longer commute to lifts.

The 3 mistakes buyers make here

Buying a Sun Valley Resort condo without reading the rental-program contract. Mandatory participation at fixed splits caps independent upside.
Underestimating mud-season collapse. April-May and October-November are deep troughs.
Confusing the cachet with the cash flow. The brand sells the buyer; it doesn’t pay the mortgage.

What to do next

Stress-test the listing in /comp-analyzer/.
Score the market: /market-score/.
Financing model: /dscr-loan-calculator/.
Year-one cash: /year-1-cash-needs/.

Not investment advice. Mandatory rental-program properties have unique economics — review the contract before offer.