12850 Knight Arch Rd is a 4,038 square foot house on a 2 acre lot with 4 bedrooms and 3 bathrooms. - it last sold on July 27, 1995 for $85,000. Based on Redfin's Fairfax data, we estimate the home's value is $1,213,111.
Single-familyProperty Type
1999Year Built
2 acresLot Size
$300Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,213,111
$1.1M since sold in July 1995$19K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 3.8% lower than the average sale price ($1.26M) 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-1
WSPO
Residential District, One Dwelling Unit/Acre
The R-1 District provides for single-family detached dwellings on large lots and allows other uses that are compatible with the low-density residential character of the district.
Zone overlays
Water Supply Protection Overlay District
Permitted uses
Include but are not limited to:
Agriculture-Other
Housing-Group
Housing-Single unit
Public service
Property details
Interior
Basement Information
Basement Sq. Ft: 224
Basement Finish: Full
Basement Type: Full Daylight
Bathroom Information
# of Full Baths: 3
Heating & Cooling
Heating Fuel Type: No Gas Public/Piped
Heating Type: Heat Pump
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 11
Exterior
Exterior Information
Construction Type: Wood
Exterior Wall: Wood
Roof Covering Type: Composition Shingle
Building Type: Single Family
Property Information
Subdivision Name: FOULGER & BOLDOG PROP
Living Sq. Ft: 4,038
Adjusted Gross Sq. Ft: 3,814
Building Sq. Ft: 4,470
# of Stories: 2
Stories Type: 2
Legal Description: HOWARD AND IRENE LIGHTFOOT PROP PCL 2
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 432
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 87,120
Legal Lot Number: 7B
Municipality Name: SPRINGFIELD DIST. #2
Acres: 2
Zoning Code: R-1
County Use Description: RESID 1 FAM DETACHED
Utility Information
Electricity / Wiring Type: Available
Financial
Assessor Information
Assessment Year: 2026
Tax Area: SPRINGFIELD DIST. #2
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 4,038
Stories: 2.0
Lot Size: 2 acres
Style: Single Family Residential
Year Built: 1999
Year Renovated: —
County: Fairfax County
APN: 0554 01 0007B
Home facts updated by county records on Jul 30, 2026
Around this home
Schools
Eagle View Elementary School
Public PreK-6 • Assigned • 1.6mi
6/10
Johnson Middle School
Public 7-8 • Assigned • 3.6mi
6/10
Fairfax High School
Public 9-12 • Assigned • 5.7mi
6/10
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
6/10 Heat Factor
7 days above 103° expected this year, 15 days in 30 years
4/10 Wind Factor
14% chance of strong winds in next 30 years
2/10 Air Factor
1 unhealthy days expected this year, 2 days in 30 years
Provided by First Street
Historical weather
Fairfax, VA • 22030
Average low and high temperatures (°F)
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63
40
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49
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89
72
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64
78
61
69
48
59
41
45
30
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Feb
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May
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Sun exposure
In this area, properties receive around 9.3 hours in
June and 4.1 hours in December, placing it below the
U.S. average for solar exposure.
9.3 hrs
4.1 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.15M – $1.40M
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