Union St, Ada, OH Property Records

Hardin County property records for 32 addresses on Union St, Ada, OH · Last verified August 2026

Union St Highlights

Properties 32
Median Sale Price $133,000
Deeds and Mortgages on File 29
Median Price per Sqft $77
Owner Occupied 19%
Median Annual Tax Bill $110
Median Year Built 1990
Median Ownership Tenure 24 years

Properties on Union St

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

202 Union St

4,500 sqft · Built 1994 · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$82025 1 Name on Record AssessorUpdated Apr 2026

208 Union St

6,200 sqft · Built 1996 · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$20,000Jun 1989 $82025 1 Name on Record AssessorUpdated Apr 2026

209 Union St

4 bd · 3 ba · 1,621 sqft · 0.264 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$62025 1 Name on Record Assessor + 2 DocumentsUpdated Apr 2026

210 Union St

6,200 sqft · Built 1996 · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$53,400Aug 1996 $92025 1 Name on Record AssessorUpdated Apr 2026

211 Union St

8,816 sqft · Built 2008 · 0.264 acres

Last Sale Tax Bill Prior Sale Owner Records
$34,000Apr 1986 $942025 1 Name on Record Assessor + 2 DocumentsUpdated Apr 2026

212 Union St

3 bd · 1 ba · 660 sqft · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$85,000Dec 2001 $3,8602025 1 Name on Record AssessorUpdated Jul 2026

219 Union St

4,000 sqft · Built 1991 · 0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$62025 1 Name on Record Assessor + 2 DocumentsUpdated Apr 2026

300 Union St

0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$82025 1 Name on Record AssessorUpdated Apr 2026

307 Union St

4 bd · 1 ba · 1,030 sqft · 0.223 acres

Last Sale Tax Bill Prior Sale Owner Records
$62025 1 Name on Record Assessor + 2 DocumentsUpdated Apr 2026

311 Union St

3,500 sqft · Built 1991 · 0.223 acres

Last Sale Tax Bill Prior Sale Owner Records
$62025 1 Name on Record Assessor + 2 DocumentsUpdated Apr 2026

315 Union St

Built 1990 · 0.286 acres

Last Sale Tax Bill Prior Sale Owner Records
$82025 1 Name on Record Assessor + 2 DocumentsUpdated Apr 2026

404 Union St

4 bd · 2,022 sqft · 0.556 acres

Last Sale Tax Bill Prior Sale Owner Records
$122025 1 Name on Record AssessorUpdated Apr 2026

426 Union St

0.66 acres

Last Sale Tax Bill Prior Sale Owner Records
$125,000Jun 2023 $512025 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

525 Union St

29,364 sqft · Built 1928 · 0.801 acres

Last Sale Tax Bill Prior Sale Owner Records
$122025 1 Name on Record Assessor + 2 DocumentsUpdated Apr 2026

601 Union St, #605

0.13 acres

Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record AssessorUpdated Apr 2026

608 Union St

3 bd · 1 ba · 2,058 sqft · 0.202 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$110,000Oct 2002 $2392025 —Sep 2002 1 Name on Record AssessorUpdated Jul 2026

610 Union St

3 bd · 1 ba · 1,401 sqft · 0.191 acres

Last Sale Tax Bill Prior Sale Owner Records
$7612025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

613 Union St

4 bd · 1 ba · 1,966 sqft · 0.276 acres · Pool

Last Sale Tax Bill Prior Sale Owner Records
—Aug 1999 $2,0802025 —Jul 1990 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

614 Union St

0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 1988 $962025 Amount on Record Dec 1985 1 Name on Record AssessorUpdated Jul 2026

619 Union St

3 bd · 1.5 ba · 1,642 sqft · 0.213 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$76,900Apr 2006 $1102025 1 Name on Record AssessorUpdated Jul 2026

620 Union St

4 bd · 1 ba · 2,639 sqft · 0.42 acres

Last Sale Tax Bill Prior Sale Owner Records
—Aug 2004 $2,3372025 —May 2004 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

625 Union St

8 bd · 1 ba · 3,290 sqft · 0.375 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$63,000Aug 1988 $2,8602025 1 Name on Record AssessorUpdated Jul 2026

701 Union St

2,900 sqft · Built 1967 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$975,000Sep 2005 $3982025 Amount on Record Jun 1987 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

705 Union St

0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$125,000Apr 2003 $1032025 1 Name on Record AssessorUpdated Jul 2026

707 Union St

2 bd · 1 ba · 2,392 sqft · 0.711 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$149,500Aug 2004 $2,1902025 —Sep 1994 1 Name on Record AssessorUpdated Jul 2026

718 Union St

2 bd · 1 ba · 720 sqft · 0.425 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$43,000Dec 1986 $2,5302025 1 Name on Record AssessorUpdated Jul 2026

720 Union St

2 bd · 1 ba · 1,719 sqft · 0.464 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$133,000Jun 2020 $2,2612025 Amount on Record Apr 2009 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

723 Union St

3 bd · 1 ba · 1,422 sqft · 0.5 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$36,700Jul 2005 $2562025 Amount on Record — 1 Name on Record AssessorUpdated Jul 2026

803 Union St

2 bd · 1.5 ba · 2,091 sqft · 0.413 acres

Last Sale Tax Bill Prior Sale Owner Records
$239,900Aug 2017 $3,6942025 Amount on Record Dec 1995 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

815 Union St

4 bd · 1 ba · 1,500 sqft · 0.403 acres

Last Sale Tax Bill Prior Sale Owner Records
$49,000May 1992 $1,6732025 1 Name on Record AssessorUpdated Jul 2026

821 Union St

3 bd · 1 ba · 1,428 sqft · 0.273 acres

Last Sale Tax Bill Prior Sale Owner Records
$43,500Jul 1992 $1,7142025 —Dec 1987 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

823 Union St

2 bd · 2 ba · 1,509 sqft · 0.18 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$120,000Jun 2018 $1,6522025 —May 2015 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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