Permits through August 2026Yearly permits since 1995Bonneville County index 1975–2025
Bonneville County (100 = first year)United States, rebased to the same startNBER recession
House prices are indexed by county, not by city: this is Bonneville County's FHFA index, with the national index rebased to the same start.
Census Bureau notes: building permit figures cover new privately owned housing units authorised by permit-issuing places; permits do not mean the units were started or completed, and places that report less often than monthly are imputed in monthly totals. FHFA notes: The FHFA HPI is a broad measure of the movement of single-family house prices. The FHFA HPI is a weighted, repeat-sales index, meaning that it measures average price changes in repeat sales or refinancings on the same properties.
Idaho Falls, Idaho (Bonneville County), authorised 786 housing units through building permits in the 12 months to August 2026, −44.1% on the previous 12 months.
279 of those units were single-family houses (35%), 0 were in two- to four-unit buildings and 507 in buildings of five or more units. That is 10.9 units per 1,000 residents, above the county's 9.1 and above the state's 9.1.
Since 1995 the place has authorised 11,194 units, with the busiest year 2024 (1,729 units). Bonneville County's FHFA house price index rose +147.2% over the ten years to 2025.
786units permitted, 12 months to August 2026−44.1% on the previous 12 months
279single-family units35% of the total
507units in 5+ unit buildings65% of the total
10.9units per 1,000 residentsBonneville County 9.1 · Idaho 9.1
Permits by month and structure type
Housing units authorised in Idaho Falls by month, latest 24 monthssingle-family2+ unit buildings
Units, 12 months to August 2026
Idaho Falls
Bonneville County
Idaho
United States
All housing units
786
1,236
18,471
1,418,086
Single-family (1 unit)
279 (35%)
661 (53%)
14,341 (78%)
888,241 (63%)
2 units
0
16
316
34,814
3–4 units
0
52
664
17,298
5 or more units
507 (65%)
507 (41%)
3,150 (17%)
477,733 (34%)
Units per 1,000 residents
10.9
9.1
9.1
4.1
Change on previous 12 months
−44.1%
−35.6%
+1.3%
−0.1%
Permits by year since 1995
Housing units authorised in Idaho Falls by year, 1995–2025single-family2+ unit buildings
11,194 units since 1995; the busiest year was 2024. Annual figures include units imputed for months a place did not report.
Home prices in Bonneville County
FHFA's index for Bonneville County rose +147.2% over the ten years to 2025 (+9.5% a year) and +0.9% in the latest year, against +149.0% and +2.3% for Idaho. Full county page: decade table, peak-to-low declines, every ZIP code and every permit-issuing place in the county.
Questions and answers
How many homes are being built in Idaho Falls, ID?
786 housing units were authorised by building permits in the 12 months to August 2026, against 1,405 in the previous 12 months.
What kind of housing is being permitted in Idaho Falls?
279 single-family units, 0 in two-unit buildings, 0 in three- and four-unit buildings and 507 in buildings of five or more units.
How does Idaho Falls compare with its county and state?
10.9 units per 1,000 residents in Idaho Falls, 9.1 in Bonneville County and 9.1 in Idaho.
How have home prices moved in Bonneville County?
FHFA's index for Bonneville County rose +147.2% over the ten years to 2025 and +0.9% in the latest year; the county page has the full series.
What does a permit count?
A housing unit authorised by a building permit for new privately owned residential construction, as reported to the Census Bureau Building Permits Survey by the permit-issuing office. Permits are not completions; some permitted units are never built, and places that report only annually are imputed in monthly figures.
Provenance
Permits: US Census Bureau, Building Permits Survey, place-level monthly and annual files through August 2026 (permit office 449000); county and state comparisons from the county and state files. Population: Census Bureau vintage 2025 estimates for incorporated places, matched on FIPS place code where the permit office is one. House price index: Federal Housing Finance Agency. Public domain. Corrections · Building Permits Survey.