Idaho Housing Market Shows Resilience as Mortgage Rates Rise

Idaho’s housing market continued to show year-over-year growth in September 2026, with home sales and median prices rising in several key areas despite higher mortgage rates. However, the statewide picture masks meaningful differences between the fast-moving Treasure Valley and markets in southeastern Idaho, where prices and buyer conditions are evolving differently.

The latest data suggests that demand remains active in parts of the state, but affordability and local inventory continue to shape the experience for buyers and sellers.

Treasure Valley Sales and Prices Remain Firm

Ada County recorded 854 closed home sales in September, an increase of 8.5% compared with the same month last year, according to Boise Regional REALTORS® market data. The county’s median sale price reached $575,000, up 2.9% year over year.

Canyon County also recorded a median sale price of approximately $443,523, an increase of about 5.1% from September 2025. It reported 419 closed sales, roughly level with the previous year.

These figures point to continued demand across the Treasure Valley, although performance differs by county and property type. Ada County’s higher prices reflect a different market mix from Canyon County, making it important for buyers and sellers to use comparable local sales when evaluating a specific property.

Statewide Data Shows Higher Prices and Fewer Listings

Redfin’s September 2026 data shows Idaho’s median home sale price at $493,582, up 3.9% year over year. The number of homes sold increased 3.2% to 2,518.

At the same time, the number of homes listed for sale fell 14.4% to 10,535. Redfin reported that 15.6% of homes sold above their asking price, indicating that some properties continued to attract competitive offers.

These figures suggest that Idaho’s market has not cooled uniformly. Fewer available listings can support prices in areas where demand remains strong, but not every home or community experiences the same level of competition. Statewide data also includes a wide range of locations and property types, so it should not be treated as a precise measure of conditions in any one city.

Mortgage Rates Add Pressure to Affordability

Mortgage rates moved above 7% in October, increasing the cost of financing a home purchase. Freddie Mac reported that the average 30-year fixed mortgage rate reached 7.40% on October 8 and October 15, before easing to 7.32% on October 22.

Higher borrowing costs can reduce the amount buyers qualify to borrow and increase monthly payments, even when home prices rise only modestly. That can lead some buyers to delay a purchase, consider a less expensive property or negotiate for seller concessions.

The September sales figures also need to be considered alongside timing. Many homes that closed during September would have gone under contract earlier, meaning the full effect of October’s higher mortgage rates may not be reflected in those completed transactions.

Micron’s Expansion Adds to Long-Term Regional Demand

Micron Technology’s planned Boise campus expansion is another major factor shaping the region’s longer-term outlook. The company’s multibillion-dollar investment is expected to create substantial employment opportunities and influence demand across several real estate sectors.

At a Colliers Treasure Valley Outlook conference in October, industry participants discussed the expansion’s potential effects on housing, multifamily properties, industrial space and retail. The scale of the project could increase demand for homes and rentals as workers move to the area or seek housing closer to employment.

However, the actual effect will depend on the pace of construction, hiring, population growth and the supply of new homes and apartments. A major investment can create opportunities for the local market, but it does not guarantee that property values or rents will rise at the same rate in every location.

Southeastern Idaho Shows a Different Market Picture

Conditions in Idaho Falls and Pocatello differ from those in the Treasure Valley.

Redfin reported that the median sale price in Idaho Falls was $359,829 for the three months ending in September, up just 0.1% year over year. In Pocatello, the median was $339,738, an increase of 1.4% over the same period.

The figures point to relatively modest price changes compared with the statewide increase. Local listing data can also show different conditions from completed-sale data, depending on whether it measures asking prices, sold prices, inventory or days on market.

For buyers, these markets may offer different options and negotiating opportunities from higher-priced parts of the Boise region. Still, conditions can vary considerably by neighborhood, property condition and price range, so buyers should review current local listings and comparable sales before drawing conclusions about whether a particular area favors buyers or sellers.

What Idaho’s Housing Trends Mean for Buyers and Sellers

For buyers in Ada County and other high-demand areas, competition may remain strong for well-priced homes, while higher mortgage rates make budgeting and financing comparisons especially important. Getting quotes from multiple lenders and considering the full monthly cost of ownership can help buyers make more informed decisions.

In southeastern Idaho, buyers may find properties that better fit their budgets, but should compare recent sales, time on market and any price reductions rather than relying only on regional averages.

For sellers, pricing remains critical. A realistic asking price based on recent comparable sales can help attract qualified buyers, while overpriced homes may need reductions or additional incentives. Sellers should also consider how financing costs affect the pool of buyers able to afford their property.

The Outlook: Resilience, With Local Differences

Idaho’s September 2026 housing figures show continued year-over-year growth in statewide sales and prices, alongside a decline in available inventory. The Treasure Valley remains an important area to watch as Micron’s expansion progresses, while Idaho Falls and Pocatello are showing more modest price changes.

The broader market is resilient, but it is not moving uniformly. Mortgage rates, housing supply, employment growth and local affordability will continue to influence market conditions in the months ahead. Buyers and sellers will be best served by focusing on current data for their specific city and property type rather than relying on statewide trends alone.