Classic 3 bdrm, 1 bath Colony Home (1399 sf) with 2 additional homes. The guest house has 2 bdrms, 1 ba, large kitchen, living rm, indoor laundry (904 sf). The 3rd home has 1 bdrm, 1 bath, living room & kitchen(735 sf). All 3 homes are in top class condition on 1.9 level acres. The property features a large deck, fruit trees & water tower. Fenced for animals with a one stall barn & pastures. The colony home, is recorded with the Historical Society as The Calder-Garrity Home. A rare find indeed!!!
Single-familyProperty Type
1917Year Built
1.92 acresLot Size
$423Est. Price/Sq.Ft.
3 car garageParking
Listed by Roseann Church•DRE #01302310• Century 21 Hometown Realty AT
Original Colony Home Plus 2 additional residences perfect for extended family living. Savor the classic elegance in this superbly maintained home with functional upgrades. Level 1.9 +/- acres in a convenient Westside location. Gorgeous Setting!! Lot Description: nice parcel
Year
Property tax
Land + Additions
Assessment*
2025
$11,358 (+4.1%)
$394,985 + $626,426
$1,021,411
2024
$10,909 (+4.9%)
$387,241 + $614,144
$1,001,385
2023
$10,400 (+5.0%)
$360,000 + $565,000
$925,000
2022
$9,906 (+32.9%)
$360,000 + $565,000
$925,000
2021
$7,453 (+8.3%)
$340,000 + $535,000
$875,000
2020
$6,882
$305,000 + $355,000
$660,000
2019
$6,882 (+1.7%)
$280,000 + $330,000
$610,000
2018
$6,768 (+13.4%)
$280,000 + $330,000
$610,000
2017
$5,969
$255,000 + $275,000
$530,000
2016
$5,968 (+9.4%)
$255,000 + $275,000
$530,000
2015
$5,454 (+7.3%)
$255,000 + $275,000
$530,000
2014
$5,081 (+20.2%)
$235,000 + $250,000
$485,000
2013
$4,228
$200,000 + $210,000
$410,000
2012
$4,228
$200,000 + $210,000
$410,000
Tax history for 4400 Portola Rd
Year
Property tax
Land + Additions
Assessment*
2025
$11,358 (+4.1%)
$394,985 + $626,426
$1,021,411
2024
$10,909 (+4.9%)
$387,241 + $614,144
$1,001,385
2023
$10,400 (+5.0%)
$360,000 + $565,000
$925,000
2022
$9,906 (+32.9%)
$360,000 + $565,000
$925,000
2021
$7,453 (+8.3%)
$340,000 + $535,000
$875,000
2020
$6,882
$305,000 + $355,000
$660,000
2019
$6,882 (+1.7%)
$280,000 + $330,000
$610,000
2018
$6,768 (+13.4%)
$280,000 + $330,000
$610,000
2017
$5,969
$255,000 + $275,000
$530,000
2016
$5,968 (+9.4%)
$255,000 + $275,000
$530,000
2015
$5,454 (+7.3%)
$255,000 + $275,000
$530,000
2014
$5,081 (+20.2%)
$235,000 + $250,000
$485,000
2013
$4,228
$200,000 + $210,000
$410,000
2012
$4,228
$200,000 + $210,000
$410,000
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Zoning
Permits
Beds
2
Baths
2
Stories
1
Lot width
—
Lot depth
—
Lot size
1.92 Acres
Year renovated
—
Sq. Ft.
1,806
Year built
1917
Style
Single Family Residential
County
San Luis Obispo County
APN
054-052-012
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Sep 16, 2026.
RSF-Z
NORTH COUNTY PLANNING AREA
SALINAS RIVER SUB AREA
INLAND AREA
Residential Single Family Zoning District
This zone is established to provide for single-family residential areas within the urban services line.
Zone overlays
Permitted uses
Include but are not limited to:
Housing
Housing-Single unit
Housing-Senior
Infrastructure
Housing-Mobile home park
Dec 15, 2021 • Final
Building residential
Install a roof-mounted photovoltaic system on a residential building.
Electrical
Solar
Mar 10, 2021 • Final
Building residential
Construct an addition for a master bedroom and bathroom and perform minor remodeling work.
Addition
Remodel
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
Parking
Parking / Garage Information
# of Garage Spaces: 3
Covered Parking
Has Parking
Interior
Laundry Information
Has Laundry
In Garage
Kitchen Information
Appliances: Dishwasher, Gas Cooking
Has Appliances
Formal Dining Room
Bathroom Information
# of Baths (Full): 1
Cooling Information
Wall Window
Has Cooling
Room Information
Basement, Guest/Maid's Quarters, Main Floor Primary Bedroom, Sun
Fireplace Information
Living Room, Pellet Stove
Has Fireplace
Flooring Information
Wood
Heating Information
Forced Air, Wall Heater
Has Heating
Interior Features
Ceiling Fan
Levels: One
Window Features: Double Pane Windows
Exterior
Exterior Information
Roof: Shingle
Other Structures: Barn, Guest House Attached
Has Fence
Construction Materials: Other
Foundation Information
Foundation Details: Raised
Exterior Features
Patio And Porch Features: Covered, Deck
Has Patio
Lot Information
Lot Size Source: Assessor's Data
Lot Features: Horse Property, Paved
Property Information
Parcel Number: 054051063
Has View
Utilities
Utilities Information
Sewer: Septic Tank
Cable Available, Telephone - On Property
Water Source: District/Public
Location
Location Information
Latitude: 35.48894500
Longitude: -120.68763700
Directions: Highway 41 west to Portola just past Santa Lucia on the left. From highway 101 exit San Anselmo west, to Ardilla right to Portola. Cross Streets: Ardilla
Zoning: RRUR
Public facts
Beds: 2
Baths: 2.0
Sq. Ft.: 1,806
Stories: 1.0
Lot Size: 1.92 acres
Style: Single Family Residential
Year Built: 1917
Year Renovated: —
County: San Luis Obispo County
APN: 054-052-012
Home facts updated by county records on Sep 16, 2026
Other
Listing Information
Days Active in MLS: 85
Continuous Days Active in MLS: 85
Listing Agent Information
List Agent First Name: Roseann
List Agent Last Name: Church
Listing Office Information
List Office Name: Century 21 Hometown Realty AT
Selling Agent Information
Buyer Agent First Name: Lisa
Buyer Agent Last Name: Marrs
Selling Office Information
Buyer Office Name: Realty One, Inc.
Around this home
Schools
Monterey Road Elementary School
Public K-5 • Assigned • 0.8mi
6/10
Atascadero Middle School
Public 6-8 • Assigned • 1.2mi
7/10
Atascadero High School
Public 9-12 • Assigned • 0.9mi
8/10
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
4/10 Fire Factor
2% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 92° expected this year, 18 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
7/10 Air Factor
12 unhealthy days expected this year, 12 days in 30 years
Provided by First Street
Historical weather
Atascadero, CA • 93422
Average low and high temperatures (°F)
63
36
65
41
71
43
69
44
76
46
80
50
81
52
89
55
83
55
79
49
65
43
63
41
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 10.7 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
10.7 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.22M – $1.48M
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