280 Keystone Ct is a 1,645 square foot house on a 6,098 square foot lot with 3 bathrooms. Based on Redfin's O Fallon data, we estimate the home's value is $294,187.
Single-familyProperty Type
2005Year Built
6,098 sq ftLot Size
$179Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$294,187
$2,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 11.8% lower than the average sale price ($334K) of 5 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$2,781 (−1.1%)
$10,544 + $76,987
$87,531
2024
$2,812 (−3.8%)
$9,619 + $70,231
$79,850
2023
$2,923 (−2.8%)
$8,537 + $62,333
$70,870
2022
$3,007 (−1.8%)
$7,849 + $57,307
$65,156
2021
$3,063 (−1.4%)
$7,873 + $54,825
$62,698
2020
$3,106 (−1.2%)
$7,712 + $53,703
$61,415
2019
$3,145 (−17.5%)
$7,453 + $51,897
$59,350
2018
$3,814 (+5.3%)
$7,237 + $50,390
$57,627
2017
$3,623 (+1.0%)
$7,675 + $46,634
$54,309
2016
$3,586 (+6.5%)
$7,545 + $45,845
$53,390
2015
$3,366 (+5.6%)
$7,369 + $44,775
$52,144
2013
$3,187
$7,172 + $43,578
$50,750
Tax history for 280 Keystone Ct
Year
Property tax
Land + Additions
Assessment*
2025
$2,781 (−1.1%)
$10,544 + $76,987
$87,531
2024
$2,812 (−3.8%)
$9,619 + $70,231
$79,850
2023
$2,923 (−2.8%)
$8,537 + $62,333
$70,870
2022
$3,007 (−1.8%)
$7,849 + $57,307
$65,156
2021
$3,063 (−1.4%)
$7,873 + $54,825
$62,698
2020
$3,106 (−1.2%)
$7,712 + $53,703
$61,415
2019
$3,145 (−17.5%)
$7,453 + $51,897
$59,350
2018
$3,814 (+5.3%)
$7,237 + $50,390
$57,627
2017
$3,623 (+1.0%)
$7,675 + $46,634
$54,309
2016
$3,586 (+6.5%)
$7,545 + $45,845
$53,390
2015
$3,366 (+5.6%)
$7,369 + $44,775
$52,144
2013
$3,187
$7,172 + $43,578
$50,750
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
SR-1(P)
Single-Family Residence Dwelling Planned Use District
The division of the city into zoning districts is based on the principle that similar conditions should prevail throughout a particular district. Some uses of land are appropriate neither as a permitted use, nor a special use, in certain districts and are, therefore, designated as planned uses or are otherwise subject to the planned use site plan approval process of this subchapter where such specified circumstances exist. It is the intent of this subchapter to authorize these planned uses only where the location and circumstances are appropriate to the use and a site plan is approved by the City Council. It is also the intent of this subchapter to increase the flexibility of development design through evaluation and approval of a site plan applying site-specific regulations. Approval of a planned use and corresponding site plan shall be considered a legislative act of rezoning. Any ordinance approving a site plan for a planned use shall be deemed to incorporate the provisions of this chapter. The term Planned Use shall mean the specified use, associated site plans and corresponding overlay district regulations authorized pursuant to this subchapter.
Permitted uses
Include but are not limited to:
Housing-Single unit
Infrastructure
Public service
Educational/school
Property details
Interior
Basement Information
Basement Sq. Ft: 1,645
Bathroom Information
# of Bathroom Fixtures: 8
Heating & Cooling
Air Conditioning Type: Central
Fireplace Information
Has Fireplace
Exterior
Exterior Information
Building Construction Quality: Average
Exterior Wall: Frame
Building Type: Single Family
Property Information
Subdivision Name: HEARTHSTONE 04
Living Sq. Ft: 1,645
Building Sq. Ft: 3,731
# of Stories: 1
Stories Type: 1
Legal Description: HEARTHSTONE PLAT 4 LOT 133 A01938758
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 441
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 6,098
Legal Lot Number: 133
Municipality Name: OFALLON
Acres: 0.14
County Use Description: RES/IMP RESIDENTIAL
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: —
Baths: 3.0
Sq. Ft.: 1,645
Stories: 1.0
Lot Size: 6,098 square feet
Style: Single Family Residential
Year Built: 2005
Year Renovated: 2005
County: St. Clair County
APN: 04080402017
Home facts updated by county records on Jul 23, 2026
Around this home
Schools
Delores Moye Elementary School
Public PreK-5 • Assigned • 0.8mi
7/10
Amelia V Carriel Junior High School
Public 6-8 • Assigned • 1.8mi
7/10
O'Fallon High School
Public 9-12 • Assigned • 3.2mi
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
5/10 Heat Factor
7 days above 106° expected this year, 21 days in 30 years
2/10 Wind Factor
1% chance of strong winds in next 30 years
3/10 Air Factor
3 unhealthy days expected this year, 4 days in 30 years
Provided by First Street
Historical weather
O Fallon, IL • 62269
Average low and high temperatures (°F)
37
20
46
28
65
41
71
51
75
56
85
67
90
73
87
65
84
61
74
50
57
41
46
30
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 9.9 hours in
June and 4.1 hours in December, which is comparable to the
U.S. average for solar exposure.
9.9 hrs
4.1 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$280,000 – $339,000
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