503 E Mendocino St Altadena, CA 91001
Estimated payment $11,144/month
Highlights
- Detached Guest House
- Rooftop Deck
- Auto Driveway Gate
- Heated In Ground Pool
- Primary Bedroom Suite
- Updated Kitchen
About This Home
Just moments from iconic Christmas Tree Lane, beyond private automatic gates and a sweeping circular drive, this updated Mid-Century Ranch reveals itself as a rare Altadena compound: serene, refined, and thoughtfully reimagined for modern living.
Set on an expansive lot, this property offers two impeccably renovated residences that feel established yet sophisticated, completed with uncompromising attention to detail. The main home features 3 bedrooms and 2 baths, centered around a beautiful open kitchen designed for both daily living and elegant entertaining. Light pours through the interiors, accentuating clean lines, curated materials, and a seamless indoor outdoor flow. Every upgrade has been executed with intention, delivering a level of polish rarely found in homes of this era.
A detached 2 bedroom, 2 bath ADU/guest house provides exceptional versatility, ideal for multi-generational living, extended stays, executive-level home office, or private retreat space. Between the two residences, a tranquil courtyard is anchored by a built-in bbq and intimate jetted pool creating a boutique resort ambiance perfect for quiet evenings or curated gatherings.
Centrally located in one of the community’s most cherished pockets, this estate feels remarkably secluded offering rare space and discretion in Southern California. In a neighborhood defined by resilience and renewal, this offering represents not only continuity, but the opportunity to step right into a home that has already been thoughtfully elevated.
A distinguished Altadena compound designed for those who value privacy, presence, and enduring quality.
Listing Agent
Seven Gables Real Estate Brokerage Phone: 626-226-6535 License #01995250 Listed on: 02/27/2026
Home Details
Home Type
- Single Family
Year Built
- Built in 1919 | Remodeled
Lot Details
- 16,831 Sq Ft Lot
- Property fronts a private road
- West Facing Home
- Landscaped
- Secluded Lot
- Rectangular Lot
- Paved or Partially Paved Lot
- Lawn
- Front Yard
Parking
- 2 Car Attached Garage
- 6 Open Parking Spaces
- Pull-through
- Parking Available
- Circular Driveway
- Auto Driveway Gate
Home Design
- Entry on the 1st floor
- Turnkey
- Composition Roof
- Wood Siding
- Stucco
Interior Spaces
- 3,046 Sq Ft Home
- 2-Story Property
- Open Floorplan
- Beamed Ceilings
- Family Room Off Kitchen
- Living Room with Fireplace
- Mountain Views
Kitchen
- Updated Kitchen
- Open to Family Room
- Eat-In Kitchen
- Gas Oven
- Gas Cooktop
- Range Hood
- Dishwasher
- Quartz Countertops
Flooring
- Wood
- Tile
Bedrooms and Bathrooms
- 5 Bedrooms | 3 Main Level Bedrooms
- Primary Bedroom on Main
- Primary Bedroom Suite
- Walk-In Closet
- Remodeled Bathroom
- Bathroom on Main Level
- 4 Full Bathrooms
- Quartz Bathroom Countertops
- Dual Sinks
- Bathtub with Shower
- Exhaust Fan In Bathroom
Laundry
- Laundry closet
- Gas And Electric Dryer Hookup
Home Security
- Carbon Monoxide Detectors
- Fire and Smoke Detector
Outdoor Features
- Heated In Ground Pool
- Rooftop Deck
- Covered Patio or Porch
- Outdoor Grill
- Rain Gutters
Additional Homes
- Two Homes on a Lot
- Detached Guest House
Location
- Suburban Location
Schools
- John Muir High School
Utilities
- Ductless Heating Or Cooling System
- Heating Available
Community Details
- No Home Owners Association
- Foothills
Listing and Financial Details
- Legal Lot and Block 12 / 14
- Tax Tract Number 4611
- Assessor Parcel Number 5840009025
- $636 per year additional tax assessments
- Seller Considering Concessions
Map
Home Values in the Area
Average Home Value in this Area
Tax History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $11,354 | $981,123 | $791,684 | $189,439 |
| 2024 | $12,315 | $1,050,000 | $862,400 | $187,600 |
| 2023 | $2,629 | $171,451 | $28,718 | $142,733 |
| 2022 | $2,548 | $168,090 | $28,155 | $139,935 |
| 2021 | $2,366 | $164,795 | $27,603 | $137,192 |
| 2019 | $2,289 | $159,909 | $26,785 | $133,124 |
| 2018 | $2,186 | $156,774 | $26,260 | $130,514 |
| 2016 | $2,099 | $150,689 | $25,242 | $125,447 |
| 2015 | $2,076 | $148,426 | $24,863 | $123,563 |
| 2014 | $2,052 | $145,519 | $24,376 | $121,143 |
Property History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Event | Price | List to Sale | Price per Sq Ft |
|---|---|---|---|---|
| 03/23/2026 03/23/26 | Pending | -- | -- | -- |
| 02/27/2026 02/27/26 | For Sale | $1,899,000 | -- | $623 / Sq Ft |
Purchase History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Grant Deed | $1,050,000 | Provident Title Company | |
| Interfamily Deed Transfer | -- | None Available | |
| Interfamily Deed Transfer | -- | None Available | |
| Interfamily Deed Transfer | -- | -- |
Mortgage History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Status | Loan Amount | Loan Type |
|---|---|---|---|
| Open | $1,169,442 | New Conventional |
Source: California Regional Multiple Listing Service (CRMLS)
MLS Number: AR26035892
APN: 5840-009-025
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The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional.
Based on information from California Regional Multiple Listing Service, Inc. and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information
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