State, one year
Idaho in 2020
Index change and building permits for the year, with every county.
In 2020 the FHFA house price index for Idaho changed +8.7%, against +3.0% for the United States and +11.2% in 2019.
19,130 housing units were authorised by building permits in the state that year (14,969 single-family), +8.0% on 2019; the national total was 1,471,141.
Counties in 2020
Ranked by the county index change from 2019 to 2020 (FHFA annual county index). Permits are units authorised in 2020; per 1,000 uses the vintage 2025 population.
| County | Index change 2020 | Units permitted | Single-family | Per 1,000 |
|---|---|---|---|---|
| Lincoln County | +14.9% | 15 | 15 | 2.7 |
| Adams County | +13.9% | 11 | 11 | 2.2 |
| Gem County | +13.5% | 148 | 146 | 6.8 |
| Shoshone County | +12.4% | 29 | 29 | 2.1 |
| Fremont County | +11.6% | 136 | 136 | 9.6 |
| Canyon County | +11.2% | 3,395 | 2,827 | 12.3 |
| Elmore County | +11.1% | 86 | 86 | 2.9 |
| Bonneville County | +10.3% | 880 | 868 | 6.5 |
| Bonner County | +10.2% | 203 | 159 | 3.7 |
| Owyhee County | +10.2% | 37 | 37 | 2.9 |
| Washington County | +9.7% | 42 | 42 | 3.6 |
| Boise County | +9.5% | 122 | 119 | 14.3 |
| Kootenai County | +9.5% | 2,929 | 1,669 | 15.3 |
| Payette County | +9.4% | 250 | 212 | 9.0 |
| Ada County | +9.0% | 6,060 | 5,029 | 11.1 |
| Bingham County | +8.9% | 304 | 220 | 5.9 |
| Custer County | +8.6% | 11 | 11 | 2.4 |
| Bannock County | +8.5% | 763 | 286 | 8.3 |
| Benewah County | +8.3% | 48 | 48 | 4.6 |
| Jefferson County | +8.0% | 291 | 267 | 8.2 |
| Lemhi County | +8.0% | 36 | 32 | 4.2 |
| Twin Falls County | +8.0% | 959 | 797 | 9.8 |
| Idaho County | +7.9% | 8 | 8 | 0.4 |
| Madison County | +7.4% | 648 | 322 | 11.7 |
| Jerome County | +7.2% | 94 | 94 | 3.6 |
| Gooding County | +7.1% | 32 | 32 | 1.9 |
| Blaine County | +6.9% | 221 | 143 | 8.7 |
| Oneida County | +6.9% | 22 | 22 | 4.3 |
| Valley County | +6.3% | 286 | 286 | 22.3 |
| Cassia County | +6.1% | 112 | 112 | 4.2 |
| Franklin County | +6.1% | 91 | 91 | 5.7 |
| Nez Perce County | +6.1% | 99 | 99 | 2.3 |
| Boundary County | +6.0% | 76 | 76 | 5.4 |
| Power County | +5.8% | 9 | 9 | 1.1 |
| Teton County | +5.7% | 247 | 219 | 18.6 |
| Caribou County | +5.6% | 19 | 19 | 2.6 |
| Clearwater County | +5.5% | 35 | 33 | 3.8 |
| Minidoka County | +4.8% | 173 | 171 | 7.6 |
| Latah County | +4.6% | 122 | 106 | 2.9 |
| Bear Lake County | +3.3% | 63 | 63 | 9.4 |
| Butte County | +2.6% | 2 | 2 | 0.7 |
| Lewis County | +2.1% | 9 | 9 | 2.4 |
Permits by year, 1995–2025
Housing units authorised in Idaho by yearsingle-family2+ unit buildings
Source: Federal Housing Finance Agency annual state and county house price indexes (updated March 31, 2026); Census Bureau Building Permits Survey annual state and county files. Public domain. Methodology.