OH · updated 2026-07-30

Ohio property data

6,197,892 properties mapped across 88 Ohio counties, 1,114,813 of them carrying linked permit, violation, sale, or event records. These are the live map's own counts, not estimates. Statewide permit totals by jurisdiction are on the coverage page.

6,197,892

Properties mapped

1,114,813

With linked records (18%)

Counties covered

Active

Coverage tier

Counties

County	Properties	With records	Linked share	Tier
Franklin	448,719	177,061	39%	Active
Hamilton	352,500	181	0.1%	Parcel-first
Cuyahoga	324,249	85,770	26%	Active
Montgomery	272,289	246,027	90%	Deep
Summit	261,941	0	0.0%	Parcel-only
Lucas	204,331	0	0.0%	Parcel-only
Stark	201,100	0	0.0%	Parcel-only
Lorain	168,845	136,650	81%	Deep
Butler	165,812	1,370	0.8%	Parcel-first
Mahoning	158,928	180	0.1%	Parcel-first
Trumbull	133,428	18	0.0%	Parcel-first
Lake	112,386	111,695	99.4%	Deep
Warren	106,093	0	0.0%	Parcel-only
Clermont	96,425	96,313	99.9%	Deep
Delaware	94,350	0	0.0%	Parcel-only
Licking	79,470	0	0.0%	Parcel-only
Medina	76,411	75,576	99%	Deep
Greene	76,206	65	0.1%	Parcel-first
Ashtabula	73,739	81	0.1%	Parcel-first
Columbiana	73,526	120	0.2%	Parcel-first
Richland	72,052	15	0.0%	Parcel-first
Fairfield	72,011	561	0.8%	Parcel-first
Wood	70,649	41	0.1%	Parcel-first
Portage	67,744	0	0.0%	Parcel-only
Clark	66,193	0	0.0%	Parcel-only
Tuscarawas	59,863	89	0.1%	Parcel-first
Belmont	58,443	40	0.1%	Parcel-first
Washington	57,643	2	0.0%	Parcel-first
Muskingum	57,181	0	0.0%	Parcel-only
Wayne	56,804	0	0.0%	Parcel-only
Scioto	55,934	58	0.1%	Parcel-first
Jefferson	55,444	0	0.0%	Parcel-only
Miami	52,866	41	0.1%	Parcel-first
Allen	52,684	0	0.0%	Parcel-only
Lawrence	51,754	5	0.0%	Parcel-first
Geauga	50,768	29	0.1%	Parcel-first
Erie	45,853	0	0.0%	Parcel-only
Ross	42,104	9	0.0%	Parcel-first
Knox	41,756	6	0.0%	Parcel-first
Athens	40,475	36	0.1%	Parcel-first
Guernsey	39,763	0	0.0%	Parcel-only
Huron	39,021	0	0.0%	Parcel-only
Hancock	37,413	0	0.0%	Parcel-only
Logan	36,300	14	0.0%	Parcel-first
Ottawa	34,519	0	0.0%	Parcel-only
Marion	34,349	37	0.1%	Parcel-first
Brown	33,748	0	0.0%	Parcel-only
Crawford	33,639	14	0.0%	Parcel-first
Seneca	33,192	20	0.1%	Parcel-first
Union	33,107	0	0.0%	Parcel-only
Sandusky	32,887	51	0.2%	Parcel-first
Highland	31,959	21	0.1%	Parcel-first
Shelby	31,382	3	0.0%	Parcel-first
Ashland	31,361	32	0.1%	Parcel-first
Darke	30,945	19	0.1%	Parcel-first
Putnam	30,160	3	0.0%	Parcel-first
Meigs	29,729	0	0.0%	Parcel-only
Pickaway	28,868	10	0.0%	Parcel-first
Auglaize	28,713	17	0.1%	Parcel-first
Holmes	28,232	0	0.0%	Parcel-only
Carroll	27,943	9	0.0%	Parcel-first
Coshocton	26,996	26	0.1%	Parcel-first
Morrow	26,558	13	0.0%	Parcel-first
Jackson	26,514	34	0.1%	Parcel-first
Gallia	26,317	1	0.0%	Parcel-first
Defiance	26,029	2	0.0%	Parcel-first
Hardin	25,979	0	0.0%	Parcel-only
Clinton	25,863	13	0.1%	Parcel-first
Champaign	25,698	15	0.1%	Parcel-first
Williams	25,442	22	0.1%	Parcel-first
Mercer	25,303	25	0.1%	Parcel-first
Perry	25,211	5	0.0%	Parcel-first
Pike	23,599	0	0.0%	Parcel-only
Fulton	23,338	0	0.0%	Parcel-only
Adams	21,521	2	0.0%	Parcel-first
Madison	21,270	10	0.0%	Parcel-first
Preble	20,480	9	0.0%	Parcel-first
Hocking	20,374	0	0.0%	Parcel-only
Wyandot	20,045	20	0.1%	Parcel-first
Van Wert	19,647	3	0.0%	Parcel-first
Henry	19,594	2	0.0%	Parcel-first
Morgan	18,972	2	0.0%	Parcel-first
Paulding	17,678	2	0.0%	Parcel-first
Harrison	17,628	6	0.0%	Parcel-first
Fayette	17,099	6	0.0%	Parcel-first
Monroe	17,058	2	0.0%	Parcel-first
Noble	16,314	0	0.0%	Parcel-only
Vinton	12,329	1	0.0%	Parcel-first

Permit approval speed

Median calendar days from filing to issuance, computed from real filed/issued date pairs over the last 3 years and published only where the sample is large and clean enough to trust (full methodology on the methodology page). Jurisdictions with too little data, or a same-day-issuance artifact in the feed, are left out rather than shown with a misleading number.

City of Cleveland

All permit types combinedmedian 1d (p25 0–p75 7) · n=44,726

City of Cincinnati

All permit types combinedmedian 6d (p25 1–p75 22) · n=26,656

City of Worthington

All permit types combinedmedian 11d (p25 7–p75 19) · n=3,357

What is in the Ohio data

Every property above sits on the owned parcel layer (92M parcels nationally) and is joined to whichever record classes exist for its jurisdiction: building permits, code violations, complaints, deeds and sales, assessments, and certificates of occupancy. Per-county parcel-match rates are published openly on the data quality page.

Building permits · 47.1M+Parcels · 92M Code violations · 22.9M Complaints & 311 · 25.1M Deeds & sales · 33.4M Assessments · 85M Certificates of occupancy · 1.6M Contractors · 3.3M Hearings & penalties · 13.1M Government decisions · 2.37M

Other states

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Get Ohio property data

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