Additional Listings Slow Home Price Growth in the Treasure Valley Housing Market
For years, those who’ve analyzed the local housing market have shared that more inventory is needed to balance demand for housing and slow price growth. August marked 19 consecutive months of year-over-year increases in inventory in both Ada and Canyon counties, and as a result, home price growth has slowed.
The year-to-date median sales price in Ada County had a 2.1% increase year-over-year. In comparison, the year-to-date median sales price in August 2024 was up 5.5%. In Canyon County, the year-to-date median sales price in August was up 2.2% versus 4.0% the year prior.
Data from the Intermountain MLS as of 9/8/25.
That’s a lot of percentages to absorb, but the bottom line is that home prices aren't declining, but price growth has slowed due to increased inventory.
Where do home prices sit now? In August, the median sales price for homes that closed was $559,990 in Ada County and $429,958 in Canyon County.
On the supply side, buyers had 2,213 available Ada County homes and 1,242 listed homes in Canyon County and to choose from last month, the highest number of listings for the month of August since 2022.
For those in the market to buy a home, there are more options to choose from, more time to make a decision and more wiggle room for negotiation. On average, buyers are paying 2.6-3.0% less than the original list price of a property. Brittany Grier, agent with The Moir Group at The Agency Boise had this advice for buyers: “While price cuts and negotiations are becoming more the norm, buyers shouldn’t expect steep discounts from the list price as a general rule, as home values are holding steady and most sellers aren’t distressed and desperate to sell.”
“Homesellers or those planning to list should plan to price competitively, market strategically and prep the home with repairs and/or staging to make your property stand out from the competition,” added Grier. Sellers are still getting great values for their homes, but don’t expect a bidding war as sellers aren’t at the same advantage as when inventory was lower.
Both buyers and sellers can benefit from recent drops in mortgage interest rates, which lower borrowing costs for buyers and will likely spur housing demand. If you’ve put your home search on pause, the fall may be a good time to re-evaluate your options with lower rates and additional available inventory.
Ready to make a move? A proven real estate agent will negotiate on your behalf, address the potential hurdles to a transaction, and utilize their industry knowledge and connections to get the job done. The Agency Boise is made up of a select group of driven agents that have deep roots in the community, local expertise, and are backed with a regional and global reach. Who you work with, matters.
Other notable metrics:
In Ada County,
Buyers had 2,213 available homes to choose from in August — 376 more than in August 2024 and 14 more than last month.
There were 1,141 pending sales, or homes under contract, in August, down 2.1% compared to a year ago.
With 829 sales for the county, there were 106 more closings in August than the same month a year ago.
The median sales price for homes that closed last month was $559,990, $20,000 more than in August 2024, and approximately $10,000 more than the month prior.
The average percent of the original list price received for homes that closed in August was 97.4%, meaning that on average, buyers paid 2.6% less than the price for which the home was originally listed.
Months supply of inventory stayed steady at 3.0 months in August and is at the highest level in years. Months supply is calculated by dividing the current inventory by the average sales from the last 12 months and indicates how long current inventory would last if no new listings were added. A balanced market, not favoring buyers or sellers, is typically considered 4-6 months of supply.
The most popular price range for home sales was $450,000-$600,000 with 276 sales, over a third of all home sales for the county. Of those, the average days on market before going under contract was 52 days and the average percent of original list price received was 97.0%.
As of September 14th, 2025, the list price range with the most inventory was $450,000-$600,000 with 748 listed homes, or nearly a third of all listed homes for the county. Of those, the average days they’ve spent on the market so far is 62 days. On average, those listed homes have undergone an average of a 1.5% price drop from the original listing price.
In Canyon County,
With 1,242 active listings in August, inventory was up 9.1% year-over-year, giving buyers 104 more listings to choose from compared to a year ago and 12 more listings than last month. New homes made up nearly half of all available homes for sale.
There were 652 pending sales in August 2025, down 7.0% when compared to the same month a year ago.
With 438 sales last month, closings were up 6.8% compared to August 2024.
The median sales price for August home sales was $429,958, about $18,500 more than in August 2024 and approximately $950 more than the month prior.
The average percent of the original list price received for homes that closed in August was 97.0%, meaning that on average, buyers paid 3.0% less than the price for which the home was originally listed.
Months supply of inventory was at 3.0 months in August, the level it’s hovered at for the last five months. Months supply is calculated by dividing the current inventory by the average sales from the last 12 months and indicates how long current inventory would last if no new listings were added. A balanced market, not favoring buyers or sellers, is typically considered 4-6 months of supply.
The most popular price range for home sales was $300,000-$450,000 with 233 sales, over half of all home sales for the county. Of those, the average days on market before going under contract was 51 days and the average percent of original list price received was 97.0%.
As of September 14th, 2025, the list price range with the most inventory was $300,000-$450,000 with 468 listed homes, over a third of all the listed homes for the county. Of those, the average days they’ve spent on the market so far is 77 days. On average, those listed homes have undergone an average of a 2.5% price drop from the original listing price.
