Idaho has outpaced every other state in housing construction for the second year in a row, yet the numbers tell a story of demand that continues to outrun supply — leaving working-class residents priced out of the communities they call home.
The state added more than 17,000 housing units in 2025, pushing its total housing stock up by 2.1 percent. That figure dwarfs the national average increase of 0.5 percent. Over the longer arc of 2020 to 2024, Idaho expanded its housing supply by more than 12 percent, a pace unmatched anywhere in the country.
Population Pressure Keeps Coming
The reason builders have been busy is no mystery. Idaho’s population grew at 1.5 percent statewide — second only to South Carolina among all fifty states. More than 90 percent of Idaho’s cities have posted positive population growth since 2020. The Treasure Valley alone absorbed nearly 10,000 new residents across Caldwell, Meridian, and Nampa between 2023 and 2024.
That wave of new arrivals has reshaped local economies in complicated ways. Ada and Canyon counties are seeing a notable income gap between longtime residents departing and newcomers settling in — a difference of roughly $40,000 annually. The result is a housing market that increasingly serves transplants with higher earnings while squeezing out Idaho families who have lived and worked there for decades.
“Idahoans can’t afford to buy a house in the town they grew up in,” said Ali Rabe, executive director of the Gen State Housing Alliance.
That concern is backed by hard data. The National Low Income Housing Coalition found that for every 100 rent-burdened households in Idaho, only 33 affordable housing units are available. A minimum wage worker in Idaho would need to log 146 hours per week — well beyond the capacity of any single person — just to afford a one-bedroom apartment at average fair market rent. The state faces a shortage of close to 24,000 affordable homes.
Those figures, combined with rising home sale prices across the Magic Valley, illustrate how Twin Falls County residents face the same pressures hitting Idaho communities statewide.
State Policy Aims to Unlock Supply
Governor Brad Little signed legislation during the 2025 session designed to ease some of the constraints holding back construction. The new law encourages development of starter home neighborhoods and removes certain barriers to accessory dwelling unit, or ADU, construction on existing residential lots. Zoning regulations have long been identified as a primary bottleneck slowing Idaho’s housing pipeline, and restrictions on ADUs in particular have kept potential units from being built in established neighborhoods.
A new statewide zoning law is set to take effect next month, with local municipalities given until February 2025 to update their codes in compliance. Not everyone in local government is enthusiastic about state-level direction on land use decisions. Pocatello Mayor Mark Dahlquist voiced a preference for local control, saying he believes “it is better for the cities individually to determine what their needs are and set their own codes and their own policies.”
That tension between state mandates and local authority is likely to play out in city halls across Idaho as the compliance deadline approaches. Smaller communities, in particular, may find themselves balancing growth pressure against the infrastructure costs that come with denser development.
Beyond zoning, builders and developers face rising construction costs that have outpaced general inflation nationwide, adding another layer of difficulty to closing the affordability gap even when permitting is smooth.
What Comes Next
Implementation of the new zoning framework will be the near-term test of whether Idaho’s legislative approach translates into actual units on the ground. Local municipalities across the state, including those in Twin Falls County, will need to bring their codes into alignment with the new rules. Housing advocates are watching closely to see whether the law accelerates ADU construction and starter home development at any meaningful scale.
Economists and housing analysts broadly agree that Idaho’s supply-side gains, while impressive by national standards, will need to continue at an aggressive pace for the affordability picture to improve. For now, Idaho may hold the nation’s top ranking in housing growth — but for many residents, that progress is not yet showing up in their monthly rent or mortgage payment. For more on Idaho’s broader economic trends, visit Idaho News.