Permits through August 2026Yearly permits since 1995Warren County index 1975–2025
Warren County (100 = first year)United States, rebased to the same startNBER recession
House prices are indexed by county, not by city: this is Warren 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.
Warren County Unincorporated Area, Ohio (Warren County), authorised 1,168 housing units through building permits in the 12 months to August 2026, +38.2% on the previous 12 months.
571 of those units were single-family houses (49%), 14 were in two- to four-unit buildings and 583 in buildings of five or more units.
Since 1995 the place has authorised 34,258 units, with the busiest year 2001 (1,938 units). Warren County's FHFA house price index rose +103.2% over the ten years to 2025.
1,168units permitted, 12 months to August 2026+38.2% on the previous 12 months
571single-family units49% of the total
583units in 5+ unit buildings50% of the total
—units per 1,000 residentsWarren County 5.7 · Ohio 2.7
Permits by month and structure type
Housing units authorised in Warren County Unincorporated Area by month, latest 24 monthssingle-family2+ unit buildings
Units, 12 months to August 2026
Warren County Unincorporated Area
Warren County
Ohio
United States
All housing units
1,168
1,477
32,282
1,418,086
Single-family (1 unit)
571 (49%)
854 (58%)
17,616 (55%)
888,241 (63%)
2 units
14
14
768
34,814
3–4 units
0
6
852
17,298
5 or more units
583 (50%)
603 (41%)
13,046 (40%)
477,733 (34%)
Units per 1,000 residents
—
5.7
2.7
4.1
Change on previous 12 months
+38.2%
+10.6%
−0.9%
−0.1%
Permits by year since 1995
Housing units authorised in Warren County Unincorporated Area by year, 1995–2025single-family2+ unit buildings
34,258 units since 1995; the busiest year was 2001. Annual figures include units imputed for months a place did not report.
Home prices in Warren County
FHFA's index for Warren County rose +103.2% over the ten years to 2025 (+7.3% a year) and +4.0% in the latest year, against +93.4% and +4.8% for Ohio. 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 Warren County Unincorporated Area, OH?
1,168 housing units were authorised by building permits in the 12 months to August 2026, against 845 in the previous 12 months.
What kind of housing is being permitted in Warren County Unincorporated Area?
571 single-family units, 14 in two-unit buildings, 0 in three- and four-unit buildings and 583 in buildings of five or more units.
How does Warren County Unincorporated Area compare with its county and state?
No population estimate is attached to this permit-issuing area, so a per-resident rate is not shown; Warren County runs at 5.7 units per 1,000 residents and Ohio at 2.7.
How have home prices moved in Warren County?
FHFA's index for Warren County rose +103.2% over the ten years to 2025 and +4.0% 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 672400); 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.