Idaho Housing Market Update: What May 2026 Means for Treasure Valley Buyers, Sellers, and Investors

If you have been watching the Idaho housing market and waiting for the right moment to make a move, this week has a lot worth paying attention to.

Mortgage rates climbed back up, a massive new neighborhood just got proposed in North Meridian, a statewide short-term rental law is on its way to the governor's desk, and the spring market is flooding with more new listings than we have seen in nearly four years.

Here is a plain-English breakdown of what is happening and what it means for you, whether you are buying your first home in Nampa, selling in Eagle, or eyeing an investment property near Payette Lake in McCall.

Mortgage Rates Are Back Up to 6.37%: What That Costs You in Real Dollars

After dipping to their lowest point of 2025 back in November at around 6.06%, the 30-year fixed mortgage rate has been creeping back up. As of May 4, 2026, the national average sits at approximately 6.37%, according to Bankrate.

That might not sound like a big difference from last fall, but it adds up fast.

On a $450,000 home (close to the median price range for Canyon County and a common entry point for many Treasure Valley buyers), here is what the math looks like:

• At 6.06% (November 2025): roughly $2,715 per month in principal and interest
• At 6.37% (today): roughly $2,806 per month

That is about $91 more every single month, or roughly $1,092 extra per year. Over a 30-year loan, that adds up to nearly $33,000 more paid in interest.

Think of it like signing up for a streaming subscription you didn't know you added. It doesn't feel like much on any given day, but over time it matters for your budget.

The Federal Reserve kept its benchmark rate steady and has no meeting scheduled in May, so do not expect any sudden relief. Most forecasters expect 30-year rates to stay in the mid-6% range through the rest of 2026.

What this means for Idaho buyers: If you are waiting for rates to fall significantly before buying, most experts say that is a long wait. Locking in at today's rates while Treasure Valley inventory is at its highest point in years could be the smarter play.

Treasure Valley Inventory Just Hit a 4-Year High

Here is the flip side of the rate story. While borrowing is a bit more expensive than last fall, buyers in Ada and Canyon counties have more homes to choose from than they have had since June 2022.

Ada County saw 1,300 new listings hit the market in April alone, the highest monthly count in nearly four years. Canyon County added another 649 new listings during the same period.

Months of supply are sitting at about 2.18 months in Ada County and 2.48 months in Canyon County. Homes are also taking longer to sell. Ada County properties spent an average of 55 days on market in March 2026, up nearly 20% compared to the same time a year ago.

What does that mean in practice? It means the days of losing out to 12 competing offers in the first weekend are mostly gone. Buyers have real negotiating room again. Sellers who price too ambitiously are watching their homes sit.

Ada County median home price came in around $540,945 in March, which is actually down about 4.3% year over year. Canyon County's median price was $432,490, up a modest 1.8% year over year. A more balanced market in Ada County, with slight appreciation continuing in Canyon County.

Idaho was also recently ranked the 13th least competitive housing market in the country for 2026. For buyers who felt completely squeezed out in 2021 and 2022, the market is genuinely more accessible today.

Big Development News: 570 New Homes Proposed Near SpurWing

One of the most significant local development stories this week comes out of North Meridian. Brighton Corporation submitted a general plan for a project called Basque Ranch, a 470-plus acre development bordered by SpurWing Golf Club, Highway 16, and the Boise River.

The plan shows roughly 570 home sites spread across three density zones, ranging from townhome-style medium-high density to larger medium-low-density lots. The project would also include space for a city park adjacent to the City of Star.

Basque Ranch still has a long approval road ahead. This is not a neighborhood you will be moving into next year. But it signals clearly where North Meridian is headed and adds to a pipeline of major projects transforming the Treasure Valley's fastest-growing corridor.

Also in the mix is Mayfield Springs, a master-planned community near Downtown Boise and the Micron Technology campus, with plans for up to 15,000 homes plus parks, schools, and resort-style amenities.

For investors and long-term buyers: Land near Highway 16, North Meridian, and the Southeast Boise corridor is seeing significant development interest. If you are thinking about where Treasure Valley growth is headed, those areas are worth watching closely.

Micron's Boise Fab Finishes Construction This Year

Micron Technology's first full-scale semiconductor fabrication plant in Southeast Boise is on track to wrap construction in 2026, with chip production expected to begin in 2027.

The facility is part of a massive $50 billion investment that is expected to bring 3,500-plus direct jobs to the area, with partner companies adding even more positions. Many of these jobs come with six-figure salaries.

For real estate, this kind of sustained, high-wage job growth is one of the strongest long-term demand drivers you can have. Neighborhoods in Southeast Boise and nearby communities like Kuna and the southern parts of Meridian are likely to see increased interest from workers looking to live close to the campus.

Idaho's Short-Term Rental Law Is Heading to the Governor

If you own or are thinking about buying a vacation rental in McCall, Coeur d'Alene, or anywhere in Idaho, this is a story to follow closely.

The Idaho Legislature passed House Bill 583, and it is now headed to Governor Brad Little's desk. The bill sets a statewide framework that limits how strictly cities and counties can regulate short-term rentals like Airbnbs and VRBOs.

Local governments would still be able to require safety features like smoke alarms, carbon monoxide detectors, and maximum occupancy limits, but those occupancy limits cannot be stricter than what is already in Idaho's building codes.

McCall is watching this carefully. The city has some of the strongest short-term rental regulations in the state and had been resistant to state preemption. If signed, this law could prevent McCall from tightening its rules further while still allowing the safety standards already in place.

For STR investors: This legislation could offer meaningful protection against future local crackdowns in popular Idaho vacation towns.

Valley County and McCall: What's Happening in the Mountain Market

The real estate market in Valley County, home to McCall, Cascade, and the Garden Valley area, is showing signs of a healthy cool-down after years of rapid appreciation.

McCall's median home price sat around $897,000 in February 2026, which is down about 4% year over year in price per square foot. The market is slowing compared to recent years, which actually makes this one of the more accessible windows for buyers who want a piece of the Payette Lake lifestyle but have been priced out until now.

McCall's short-term rental economy remains strong. The city hosts over 325 managed STR properties plus 118 individually licensed rentals, driven by four-season tourism demand.

One item for investors to note: McCall added a new 4% lodging tax effective January 1, 2026, dedicated to street infrastructure for the next decade. That applies to all lodging, including short-term rentals, so factor it into your return calculations.

Garden Valley and the Crouch/Banks area continue to attract buyers looking for rural acreage and recreational property at a lower price point than McCall.

A Plain-English Take for Buyers, Sellers, and Investors

• If you are buying: This is genuinely one of the better buying environments Treasure Valley has offered in several years. Inventory is up, competition is down, and sellers are more willing to negotiate. Waiting for a big rate drop while watching good homes sit longer on the market may cost you more in the long run.
• If you are selling: The market still leans in your favor, but only if you price correctly from day one. Overpriced homes are sitting. A well-priced, well-presented home in a strong Treasure Valley location will still sell, but the days of accepting any offer above asking within 48 hours are largely behind us. Curious about your home's value? Get your free value report here.
• If you are an investor: The combination of Micron-driven job growth, a proposed STR-friendly state law, and a slowing McCall market creates interesting opportunities on multiple fronts.

One Thing to Watch This Week

The April jobs report drops this Friday. If hiring numbers come in stronger than expected, it could push mortgage rates higher right as the spring buying season hits its peak. If jobs disappoint, rates might ease a touch. Either way, it is the single most important data point this week for anyone watching Idaho mortgage rates.

Ready to Make a Move in Idaho?

Whether you are thinking about buying your first home in Meridian, selling in Eagle, or exploring investment property near McCall, the IdaListings team knows the Treasure Valley and Valley County inside and out.

Browse homes for sale or reach out to connect with a local expert who can help you understand what today's market means for your specific situation.