503 Peterson Rd is a 2,068 square foot house on a 3.19 acre lot. - it last sold on June 11, 1991 for $62,500. Based on Redfin's Ontario data, we estimate the home's value is $409,487.
Single-familyProperty Type
1972Year Built
3.19 acresLot Size
$198Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$409,487
$347K since sold in June 1991$9,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 7.8% higher than the average sale price ($380K) 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.
Permits
Aug 26, 2025 • Final
Residential mechanical
Remove and replace a liquid petroleum gas furnace and air conditioning unit.
Gas
HVAC
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Exterior
Exterior Information
Building Type: Single Family
Property Information
Living Sq. Ft: 2,068
Lot Information
# of Buildings: 1
Land Sq. Ft: 138,956
Municipality Name: ONTARIO-RURAL
Acres: 3.19
Zoning Code: C-A1
County Use Description: SINGLE FAMILY RESIDENT
Financial
Assessor Information
Assessment Year: 2025
Tax Area: ONTARIO-RURAL
Public facts
Beds: —
Baths: —
Sq. Ft.: 2,068
Stories: —
Lot Size: 3.19 acres
Style: Single Family Residential
Year Built: 1972
Year Renovated: —
County: Malheur County
APN: 7013.0
Home facts updated by county records on Jun 12, 2026
Around this home
Schools
Aiken Elementary School
Public 2-3 • Assigned • 2.0mi
8/10
Ontario Middle School
Public 6-8 • Assigned • 2.6mi
3/10
Ontario High School
Public 9-12 • Assigned • 2.2mi
3/10
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
5/10 Fire Factor
6% chance of being in a wildfire in next 30 years
5/10 Heat Factor
7 days above 100° expected this year, 19 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
7/10 Air Factor
9 unhealthy days expected this year, 15 days in 30 years
Provided by First Street
Historical weather
Ontario, OR • 97914
Average low and high temperatures (°F)
40
27
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28
59
38
65
41
77
51
84
57
93
66
90
63
84
54
66
42
51
35
42
32
Jan
Feb
Mar
Apr
May
Jun
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Aug
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Sun exposure
In this area, properties receive around 11.4 hours in
June and 2.9 hours in December, placing it above the
U.S. average for solar exposure.