2303 Santa Rosa Ave is a 1,817 square foot house on a 10,510 square foot lot with 3 bedrooms and 2 bathrooms. - it last sold on November 30, 1973 for $35,000. Based on Redfin's Altadena data, we estimate the home's value is $1,325,982.
Single-familyProperty Type
1958Year Built
10,510 sq ftLot Size
$730Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,325,982
$1.3M since sold in November 1973$31K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 83.1% higher than the average sale price ($724K) 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 and permits
Zoning
Permits
R-1-10000
Single-Family Residence Zone
Residential Zones preserve, protect, and enhance areas for residential land uses in a range of densities; provide for orderly, well-planned, and balanced growth of residential neighborhoods; and ensure adequate light, air, privacy, and open space for each dwelling. These zones also provide for the appropriate location of public and semi-public uses such as schools, parks, and religious facilities that can serve and complement residential uses.
Permitted uses
Include but are not limited to:
Agriculture-Other
Housing-Group
Housing-Other
Jul 28, 2022 • Final
Roof mount residential solar
Install a roof-mounted solar photovoltaic system with solar modules and a central string inverter.
Electrical
Solar
Jul 19, 2022 • Final
Electrical permit (simple) - county
Upgrade the main electrical service panel to a new 200 amp panel.
Electrical
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
Interior
Heating & Cooling
Heating Type: Central
Exterior
Pool Information
Has Pool
Property Information
Subdivision Name: 24045
Living Sq. Ft: 1,817
# of Units: 1
Legal Description: TRACT # 24045 SE 140 FT OF LOT 5
Lot Information
# of Buildings: 1
Land Sq. Ft: 10,510
Legal Lot Number: 5
Acres: 0.2413
Depth Footage: 140
Front Footage: 75
Zoning Code: LCR110
County Use Description: SINGLE FAMILY RESID
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,817
Stories: —
Lot Size: 10,510 square feet
Style: Single Family Residential
Year Built: 1958
Year Renovated: 1958
County: Los Angeles County
APN: 5839006022
Home facts updated by county records on Aug 28, 2026
Around this home
Schools
Altadena Elementary School
Public K-5 • Assigned • 0.2mi
5/10
Eliot Arts Magnet
Public 6-8 • Assigned • 0.5mi
2/10
John Muir High School
Public 9-12 • Assigned • 1.3mi
4/10
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
6/10 Fire Factor
12% chance of being in a wildfire in next 30 years
5/10 Heat Factor
7 days above 98° expected this year, 19 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
21 unhealthy days expected this year, 24 days in 30 years
Provided by First Street
Historical weather
Altadena, CA • 91001
Average low and high temperatures (°F)
68
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81
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83
59
90
64
86
63
81
58
71
51
69
50
Jan
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May
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Sun exposure
In this area, properties receive around 10.2 hours in
June and 6.5 hours in December, placing it above the
U.S. average for solar exposure.
10.2 hrs
6.5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.26M – $1.53M
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