Google street view image for 321 S Union Rd, Miamisburg, OH 45342

Off Market Dec 1984 for $24K

$401,037

Est. refi paymentEst. refi $163/mo

•

2.5 ba

•

2,176

sq ft

321 S Union Rd, Miamisburg, OH 45342

About this home

321 S Union Rd is a 2,176 square foot house on a 5 acre lot with 4 bedrooms and 2.5 bathrooms. - it last sold on December 05, 1984 for $24,000. Based on Redfin's Miamisburg data, we estimate the home's value is $401,037.

Single-familyProperty Type

1985Year Built

5 acresLot Size

$184Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$401,037

$377K since sold in December 1984$2,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 39.9% higher than the average sale price ($287K) of 6 comparable homes.

SOLD MAY 22, 2026
$340,000
A
3 beds2 baths1,404 sq ft
7519 Lower Miamisburg Rd, Miamisburg, OH 45342
SOLD JUL 10, 2026
$219,000
B
3 beds2 baths1,416 sq ft
8074 Lower Miamisburg Rd, Germantown, OH 45327
SOLD MAY 26, 2026
$260,000
C
3 beds2 baths1,696 sq ft
7332 Upper Miamisburg Rd, Miamisburg, OH 45342
SOLD MAY 15, 2026
$365,000
D
4 beds2.5 baths2,184 sq ft
413 Lawrence Ave, Miamisburg, OH 45342
SOLD AUG 28, 2026
$254,000
E
3 beds2 baths1,620 sq ft
8150 Manning Rd, Germantown, OH 45327
SOLD MAY 26, 2026
$282,180
F
3 beds2 baths1,736 sq ft
7427 Upper Miamisburg Rd, Miamisburg, OH 45342

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Earn from this home

Sell

$375,933

Est. take-home

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Est. cash available

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Rent

$1,904/mo

Redfin rental estimate

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Market trends in 45342, OH

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

98.5%

0.5% MoM

Median sale price

$265K

$1K MoM

Avg. days on market

34d

4 days MoM

Recently sold homes

138

3 MoM

New listings for sale

NEW 20 HRS AGO
$299,900
3 beds2 baths1,543 sq ft
9037 Marquis Dr, Miamisburg, OH 45342
(937) 439-4500
OPEN SUN, 2PM TO 4PM
$249,000
3 beds3 baths1,120 sq ft
441 W Early Dr, Miamisburg, OH 45342
(937) 433-1776
FOR SALE BY OWNER
$65,000
3 beds2 baths— sq ft
20 Beth Ln, Miamisburg, OH 45342
$125,000
2 beds1.5 baths982 sq ft
2826 Foxwood Ct, Miamisburg, OH 45342
(937) 949-0006
OPEN THU, 6PM TO 8PM
$280,000
3 beds1.5 baths1,508 sq ft
1403 Moondust Ct, Miamisburg, OH 45342
$309,900
4 beds1.5 baths1,336 sq ft
5281 Soldiers Home Miamisburg Rd, Miamisburg, OH 45342
(937) 866-6364
$529,900
3 beds2.5 baths3,688 sq ft
9845 Jamaica Rd, Miamisburg, OH 45342
(937) 748-0000
$204,900
3 beds2 baths1,113 sq ft
2959 Asbury Ct, Miamisburg, OH 45342
(937) 530-4904
$300,000
3 beds2 baths2,304 sq ft
1414 Belvo Rd, Miamisburg, OH 45342
$320,000
2 beds2 baths1,563 sq ft
1848 Rosina Dr, Miamisburg, OH 45342
See all

Provided by Redfin

Sale history for 321 S Union Rd

Year

Property tax

Land + Additions

Assessment*

2025

$5,633 (+12.5%)

$20,640 + $65,780

$86,420

2024

$5,008 (+1.7%)

$20,640 + $65,780

$86,420

2023

$4,924 (−8.6%)

$20,640 + $65,780

$86,420

2022

$5,385 (+13.0%)

$19,110 + $60,900

$80,010

2021

$4,766 (+0.2%)

$19,110 + $60,900

$80,010

2020

$4,754 (−0.9%)

$19,110 + $60,900

$80,010

2019

$4,796 (−0.3%)

$19,110 + $55,550

$74,660

2018

$4,812 (+0.7%)

$19,110 + $55,550

$74,660

2017

$4,780 (+5.4%)

$19,110 + $55,550

$74,660

2016

$4,535 (−10.7%)

$19,110 + $49,860

$68,970

2014

$5,079 (−2.2%)

$19,110 + $49,861

$68,971

2013

$5,195

$28,665 + $44,685

$73,350

Tax history for 321 S Union Rd

Year

Property tax

Land + Additions

Assessment*

2025

$5,633 (+12.5%)

$20,640 + $65,780

$86,420

2024

$5,008 (+1.7%)

$20,640 + $65,780

$86,420

2023

$4,924 (−8.6%)

$20,640 + $65,780

$86,420

2022

$5,385 (+13.0%)

$19,110 + $60,900

$80,010

2021

$4,766 (+0.2%)

$19,110 + $60,900

$80,010

2020

$4,754 (−0.9%)

$19,110 + $60,900

$80,010

2019

$4,796 (−0.3%)

$19,110 + $55,550

$74,660

2018

$4,812 (+0.7%)

$19,110 + $55,550

$74,660

2017

$4,780 (+5.4%)

$19,110 + $55,550

$74,660

2016

$4,535 (−10.7%)

$19,110 + $49,860

$68,970

2014

$5,079 (−2.2%)

$19,110 + $49,861

$68,971

2013

$5,195

$28,665 + $44,685

$73,350

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Zoning

Agricultural Residential District

The AR Agricultural Residential District is intended to provide for agricultural activities on large tracts and areas of open land with a minimum of 40000 square feet of lot area per dwelling unit.

Property details

Interior

Basement Information
Basement Type: Full

Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1
# of Bathroom Fixtures: 8

Heating & Cooling
Air Conditioning Type: Central
Heating Fuel Type: Gas
Heating Type: Central

Room Information
# of Rooms: 7

Exterior

Exterior Information
Building Style Type: Colonial
Exterior Wall: Frame/Masonry

Property Information
Subdivision Name: CITY/MIAMISBURG
Living Sq. Ft: 2,176
Adjusted Gross Sq. Ft: 900
Ground Floor Sq. Ft: 896
Building Sq. Ft: 2,752
# of Stories: 2
Stories Type: 2
Legal Description: 4115 PT

Parking & Garage Information
# of Parking Spaces: 3
Parking Type: Attached Masonry Garage
Garage/Parking Sq. Ft: 576
Garage / Carport Type: Attached Masonry Garage

Lot Information
# of Buildings: 1
Land Sq. Ft: 217,800
Legal Lot Number: 3
Municipality Name: CITY OF MIAMISBURG
Acres: 5
County Use Description: SFD TO 9.99 AC
State Use Description: RESIDENTIAL

Location Information
Parcel Location Influence: Neighborhood / Spot

Utility Information
Electricity / Wiring Type: Available

Financial

Assessor Information
Assessment Year: 2025
Tax District County: MIAMI TWP-MIAMISBURG CITY II-M

Public facts

Beds: 4
Baths: 2.5
Sq. Ft.: 2,176
Stories: 2.0
Lot Size: 5 acres
Style: Single Family Residential
Year Built: 1985
Year Renovated: —
County: Montgomery County
APN: K46 00815 0003

Home facts updated by county records on Sep 18, 2026

Around this home

Schools

Bear Elementary School

Public PreK-2 • Assigned • 0.5mi

Miamisburg Middle School

Public 6-8 • Assigned • 2.4mi

6/10

Miamisburg High School

Public 9-12 • Assigned • 2.9mi

7/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

3/10 Heat Factor

7 days above 101° expected this year, 19 days in 30 years

2/10 Wind Factor

1% chance of strong winds in next 30 years

3/10 Air Factor

2 unhealthy days expected this year, 4 days in 30 years

Provided by First Street

Historical weather

Miamisburg, OH • 45342

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 9.4 hours in June and 3.1 hours in December, placing it below the U.S. average for solar exposure.

9.4 hrs

3.1 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$381,000 – $462,000

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Nearby similar homes

$275,000

3 beds2 baths2,082 sq ft

1646 Hickory Glenn Dr, Miamisburg, OH 45342

(937) 530-6289

$820,000

4 beds3.5 baths3,703 sq ft

20 Fairwood Dr, Miamisburg, OH 45342

$294,500

3 beds2 baths2,239 sq ft

717 E Mcguire St, Miamisburg, OH 45342

(937) 866-6364

$165,000

2 beds2 baths1,090 sq ft

1221 Orchard Hill Dr, Miamisburg, OH 45342

(937) 436-2700

NEW CONSTRUCTION

$299,900

3 beds2 baths1,375 sq ft

2091 Pine Forest Dr, Miamisburg, OH 45342

$529,900

3 beds2.5 baths3,688 sq ft

9845 Jamaica Rd, Miamisburg, OH 45342

(937) 748-0000

New listings for sale in 45342

NEW 20 HRS AGO

$299,900

3 beds2 baths1,543 sq ft

9037 Marquis Dr, Miamisburg, OH 45342

(937) 439-4500

OPEN SUN, 2PM TO 4PM

$249,000

3 beds3 baths1,120 sq ft

441 W Early Dr, Miamisburg, OH 45342

(937) 433-1776

FOR SALE BY OWNER

$65,000

3 beds2 baths— sq ft

20 Beth Ln, Miamisburg, OH 45342

$125,000

2 beds1.5 baths982 sq ft

2826 Foxwood Ct, Miamisburg, OH 45342

(937) 949-0006

OPEN THU, 6PM TO 8PM

$280,000

3 beds1.5 baths1,508 sq ft

1403 Moondust Ct, Miamisburg, OH 45342

$309,900

4 beds1.5 baths1,336 sq ft

5281 Soldiers Home Miamisburg Rd, Miamisburg, OH 45342

(937) 866-6364

$529,900

3 beds2.5 baths3,688 sq ft

9845 Jamaica Rd, Miamisburg, OH 45342

(937) 748-0000

$204,900

3 beds2 baths1,113 sq ft

2959 Asbury Ct, Miamisburg, OH 45342

(937) 530-4904

$300,000

3 beds2 baths2,304 sq ft

1414 Belvo Rd, Miamisburg, OH 45342

Home values near 321 S Union Rd

Data from public records.

Address	Redfin Estimate
330 S Union Road, Miamisburg, OH 3 Beds \| 1.5 Baths \| 1232 Sq. Ft.	$306,025
285 S Union Road, Miamisburg, OH 4 Beds \| 2.5 Baths \| 3163 Sq. Ft.	$432,258

Address	Redfin Estimate
331 S Union Road, Miamisburg, OH 3 Beds \| 2.5 Baths \| 3129 Sq. Ft.	$490,067
257 S Union Road, Miamisburg, OH 3 Beds \| 2.5 Baths \| 3052 Sq. Ft.	$407,669

Address	Redfin Estimate
177 S Union Road, Miamisburg, OH 4 Beds \| 2.5 Baths \| 3322 Sq. Ft.	$458,167
229 S Union Road, Miamisburg, OH 4 Beds \| 2.5 Baths \| 2328 Sq. Ft.	$378,450

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 45342, OH

Sale history for 321 S Union Rd

Tax history for 321 S Union Rd

Zoning

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 45342

Home values near 321 S Union Rd

More real estate resources