18431 Old Triangle Rd is a 867 square foot house on a 9,448 square foot lot with 1 bedroom and 1 bathroom. - it last sold on May 01, 1991 for $56,682. Based on Redfin's Triangle data, we estimate the home's value is $225,545.
Single-familyProperty Type
1901Year Built
9,448 sq ftLot Size
$260Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$225,545
$169K since sold in May 1991$11K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 39.9% lower than the average sale price ($375K) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
R-4
Suburban Residential District
The R-4 district is intended to implement the suburban residential-low, suburban residential-moderate, and community employment center land use classifications of the Comprehensive Plan. This district is designed to provide for and encourage development of quality one-family dwellings at a low to moderate suburban density of approximately four dwelling units per acre or less.
Permitted uses
Include but are not limited to:
Housing-Group
Housing-Single unit
Office
Property details
Interior
Bathroom Information
# of Full Baths: 1
Heating & Cooling
Heating Type: Stove
Room Information
# of Rooms: 4
Exterior
Exterior Information
Physical Condition: Average
Exterior Wall: Wood Siding
Property Information
Living Sq. Ft: 867
Building Sq. Ft: 867
# of Stories: 1
Stories Type: 1
Lot Information
# of Buildings: 1
Land Sq. Ft: 9,448
Legal Lot Number: 37A
Municipality Name: COUNTY
Acres: 0.2169
Zoning Code: R4
County Use Description: RES-1 FAMILY DET
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 867
Stories: 1.0
Lot Size: 9,448 square feet
Style: Single Family Residential
Year Built: 1901
Year Renovated: 1901
County: Prince William County
APN: 8188-75-5177
Home facts updated by county records on Aug 26, 2026
Around this home
Schools
Triangle Elementary School
Public PreK-5 • Assigned • 0.8mi
3/10
Graham Park Middle School
Public 6-8 • Assigned • 0.6mi
4/10
Forest Park High School
Public 9-12 • Assigned • 4.7mi
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
3/10 Fire Factor
0.31% chance of being in a wildfire in next 30 years
8/10 Heat Factor
7 days above 104° expected this year, 15 days in 30 years
4/10 Wind Factor
18% chance of strong winds in next 30 years
2/10 Air Factor
1 unhealthy days expected this year, 1 days in 30 years
Provided by First Street
Historical weather
Triangle, VA • 22172
Average low and high temperatures (°F)
40
24
46
30
63
41
71
51
75
57
85
67
89
73
82
65
78
63
70
50
60
42
46
30
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 9.5 hours in
June and 4.4 hours in December, placing it below the
U.S. average for solar exposure.
9.5 hrs
4.4 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$215,000 – $260,000
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