Boise Idaho Housing Market Update – May 2026

Sarah Breck
May 27
6 min read

https://www.youtube.com/watch?v=CATkiWUyyW8

Mortgage Rates Drop, Inventory Rises, and Idaho Passes Major Housing Laws - Housing Market Update

If you’ve been waiting for the Boise housing market to completely collapse… this month’s data may complicate that narrative a little.

Because despite inflation rising again, mortgage rates unexpectedly ticked downward. At the same time, pending sales in Ada County climbed to their highest level since 2022, inventory continued rising, and Idaho lawmakers passed major legislation aimed at increasing housing supply across the state.

The Treasure Valley market isn’t behaving like a market in freefall. Instead, it’s behaving like a market adjusting, adapting, and gradually finding a new rhythm.

In this Boise real estate market update, we’ll cover:

Boise mortgage rate trends
Ada County housing market stats
Inventory and pending sales
Boise’s new pre-approved ADU program
Idaho’s new housing laws
Major new developments in Meridian and the Micron corridor

Mortgage Rates Unexpectedly Declined Despite Rising Inflation

Mortgage rates slightly declined this week even as inflation data came in hotter than expected.

According to Freddie Mac, the average 30-year fixed mortgage rate dropped to 6.36% for the week ending May 14, down slightly from 6.37% the previous week. For comparison, rates averaged 6.81% during the same period in 2025.

At the same time, the latest Consumer Price Index (CPI) report showed inflation rising 3.8% year-over-year — the highest level in three years.

Much of the increase has been tied to rising oil prices resulting from conflict in the Middle East and disruptions surrounding the Strait of Hormuz.

What economists are watching closely now is how rising energy costs are spreading into:

transportation
shipping
consumer goods
services
and broader business costs

Typically, inflation pressure pushes mortgage rates higher, which is why this recent slight rate decline surprised many analysts.

More importantly, Boise buyers appear to be adapting to the “higher-for-longer” rate environment rather than completely sitting on the sidelines.

And that shift is starting to show up clearly in local housing data.

Ada County Housing Market Update – April 2026

According to Boise Regional REALTORS®, April brought stronger buyer activity, rising pending sales, and faster-moving inventory across Ada County.

Median Home Prices in Ada County

The median sales price in Ada County reached:

$545,000 overall
down just 0.3% year-over-year
and up 0.7% month-over-month

While overall prices remained relatively flat, one notable trend emerged:

The gap between original list price and final sold price narrowed significantly — from roughly $13,000 in March to about $8,000 in April.

That suggests sellers are becoming more strategic with pricing, while buyers are responding quickly to well-positioned homes.

This market continues rewarding preparation and realistic pricing rather than overly aggressive listing strategies.

Boise Home Sales Increased Significantly

Ada County recorded:

908 homes sold in April
up 21.4% year-over-year
and up 12.1% month-over-month

Boise specifically experienced a particularly strong jump in activity, with sales volume increasing 32% compared to March.

An interesting detail from the report:

The average age of homes sold in Boise increased from 36 years old to 41 years old in just one month.

This may indicate buyers are broadening their search criteria beyond newer construction and showing increased interest in established Boise neighborhoods with:

mature landscaping
larger lots
central locations
and long-term value potential

Pending Sales Reach Highest Level Since 2022

One of the strongest signals in this month’s report is the continued rise in pending sales.

Ada County now has:

1,512 pending sales
the highest level seen since April 2022

Pending sales have now increased for four consecutive months.

This matters because pending contracts reflect what buyers are doing now — not what closed 30 to 60 days ago.

Despite mortgage rates remaining in the 6% range, buyers are still actively entering the market, especially when homes are priced appropriately and monthly payments align with their comfort level.

Boise Inventory Continues Rising

Inventory also increased in April.

Ada County now has:

1,735 active listings
up 12.9% month-over-month

For this housing market update - nearly half of all current inventory was added within the last month, with Boise accounting for a larger share of those newer listings.

However, despite rising inventory levels, Boise Regional REALTORS® still classifies the market as seller-leaning with only 2.2 months supply of inventory.

For context:

A balanced market is typically considered 4–6 months supply.
Boise remains well below that threshold.

So while buyers now have more choices and slightly more negotiating power, the market is still far from oversupplied.

Homes in Boise Are Selling Faster Again

Days on market declined again in April.

Boise homes sold in:

approximately 26 days on average
down from 31 days in March

Interestingly, resale homes built between roughly 31–80 years ago had some of the fastest sales timelines in Ada County.

This further supports the trend of buyers gravitating toward established neighborhoods and older resale inventory.

Boise Launches Pre-Approved ADU Program

Boise homeowners now have a faster path to building accessory dwelling units (ADUs), including:

backyard cottages
in-law suites
garage apartments
and detached guest homes

The city’s new pre-approved ADU program provides ready-to-use building plans that simplify the design and permitting process.

Available plan options include:

Goldfinch
Waxwing
Kingfisher
Kestrel
Sandpiper
Osprey

Properties must:

contain an existing single-family home
be zoned for ADU use
and meet overlay restrictions

Properties located in Flood Protection Overlay or Hillside Development Overlay areas are excluded from the program.

Maximum ADU size is limited to:

70% of the primary residence
or 900 square feet
whichever is smaller

One particularly notable detail:

Boise does not require additional parking spaces for the ADU beyond the single existing parking space for the primary residence.

This change could significantly increase flexibility for:

multigenerational living
aging parents
long-term rental income
and homeowners seeking additional housing flexibility

Idaho Passes Major Housing Legislation

Idaho lawmakers also passed two major housing bills aimed at increasing housing supply statewide.

Governor Brad Little signed:

Senate Bill 1352
Senate Bill 1354

Both laws apply to Idaho cities with populations over 10,000.

Senate Bill 1352 – Starter Home Density

SB 1352 limits the ability of cities to block higher-density starter-home developments on parcels larger than four acres.

The bill:

allows smaller lot sizes
reduces setback restrictions
reduces width requirements
and requires cities to permit at least 12 units per acre unless infrastructure constraints exist

This marks a substantial shift in Idaho development policy.

Senate Bill 1354 – ADU Protections

SB 1354 prevents local governments and homeowners associations from prohibiting accessory dwelling units.

The law guarantees property owners the right to build at least one ADU per lot and restricts limitations on ADU size.

Combined with Boise’s new pre-approved ADU program, these changes could significantly reshape housing flexibility throughout the Treasure Valley over the next several years.

Major New Development Coming to Meridian

Meridian’s Eagle View Landing development is also expanding with several large-scale projects planned.

The four-part expansion includes:

a 125,000 square foot corporate campus
a seven-acre medical campus
a three-story medical office building
and a concert venue

Construction is expected to begin in 2026, with projected openings in 2027.

Large commercial and medical developments like these are often long-term indicators of economic confidence and regional growth.

CWI Expands Workforce Training Near Micron Corridor

The College of Western Idaho also announced a new 100,000 square foot Micron Academic Building.

The facility will support:

business programs
information technology
cybersecurity
adult education
and workforce training

As Micron’s expansion continues influencing the Treasure Valley economy, workforce development projects like this may play a significant role in supporting long-term employment and housing demand.

Final Thoughts on the Boise Housing Market

The Boise real estate market continues evolving — but current data suggests normalization rather than collapse.

Inventory is improving.Pending sales are rising. Homes are still moving when priced appropriately.And Idaho is actively pursuing policies designed to increase long-term housing supply.

For buyers, sellers, and relocation clients, strategy matters more now than headline panic.

If you’re considering relocating to Boise, buying, selling, building an ADU, or simply trying to understand how these changes may impact your plans, I’m always happy to help guide the conversation.