OPENHOUSE EXTRAVGANZA 9/20-21! 2 homes on 1 lot! Beautiful 1936 built Mediterranean style Villa. Over an acre of land w/electric security gate at front & back of property. Main house is 3bdrm/1 ba upstairs, 1 bdrm/1.5 ba downstairs- and a LARGE dog salon. Tons potential with lower level! Artists etc
Single-familyProperty Type
1936Year Built
1.17 acresLot Size
$187Price/Sq.Ft.
2 car garageParking
Listed by Sophie Piper•DRE #01704073• BHG Tri-Valley Realty
Bought with Sadiq Habib•DRE #01453056• Sadiq Habib, Broker
bridgeMLS, Bay East AOR, or Contra Costa AOR #40673708
Oct 16, 2014
Listing Removed
—
Oct 16, 2014
Sold
$613,000
$187/sq ft
Sep 28, 2014
Pending
—
Sep 12, 2014
Listed
$650,000
$199/sq ft
+21
OPENHOUSE EXTRAVGANZA 9/20-21! 2 homes on 1 lot! Beautiful 1936 built Mediterranean style Villa. Over an acre of land w/electric security gate at front & back of property. Main house is 3bdrm/1 ba upstairs, 1 bdrm/1.5 ba downstairs- and a LARGE dog salon. Tons potential with lower level! Artists etc
bridgeMLS, Bay East AOR, or Contra Costa AOR #40673699
Oct 16, 2014
Sold
$613,000
$187/sq ft
Sep 28, 2014
Pending
—
Sep 12, 2014
Listed
$650,000
$199/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #20040473
Aug 18, 2001
Listing Removed
—
Public Records
Aug 7, 2001
Sold
$400,000
$122/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$11,537 (+104.7%)
$306,466 + $444,991
$751,457
2024
$5,636 (−48.9%)
$300,457 + $436,266
$736,723
2023
$11,026 (+1.5%)
$294,566 + $427,712
$722,278
2022
$10,865 (+0.5%)
$288,791 + $419,326
$708,117
2021
$10,810 (+4.4%)
$283,129 + $411,104
$694,233
2020
$10,353 (+1.4%)
$277,578 + $403,044
$680,622
2019
$10,208 (+4.1%)
$274,732 + $398,912
$673,644
2018
$9,810 (+2.5%)
$269,346 + $391,091
$660,437
2017
$9,568 (+1.3%)
$258,888 + $375,905
$634,793
2016
$9,447 (+0.4%)
$258,888 + $375,905
$634,793
2015
$9,405 (+22.0%)
$253,812 + $368,535
$622,347
2014
$7,708 (+1.7%)
$301,153 + $180,763
$481,916
2013
$7,581 (+7.7%)
$301,153 + $180,763
$481,916
2012
$7,039 (+1.2%)
$299,792 + $179,947
$479,739
2011
$6,953 (+4.9%)
$293,914 + $176,419
$470,333
2010
$6,627 (+3.5%)
$288,151 + $172,960
$461,111
2009
$6,400 (+8.7%)
$285,998 + $171,668
$457,666
2008
$5,886
$286,678 + $172,076
$458,754
Tax history for 4278 Appian Way
Year
Property tax
Land + Additions
Assessment*
2025
$11,537 (+104.7%)
$306,466 + $444,991
$751,457
2024
$5,636 (−48.9%)
$300,457 + $436,266
$736,723
2023
$11,026 (+1.5%)
$294,566 + $427,712
$722,278
2022
$10,865 (+0.5%)
$288,791 + $419,326
$708,117
2021
$10,810 (+4.4%)
$283,129 + $411,104
$694,233
2020
$10,353 (+1.4%)
$277,578 + $403,044
$680,622
2019
$10,208 (+4.1%)
$274,732 + $398,912
$673,644
2018
$9,810 (+2.5%)
$269,346 + $391,091
$660,437
2017
$9,568 (+1.3%)
$258,888 + $375,905
$634,793
2016
$9,447 (+0.4%)
$258,888 + $375,905
$634,793
2015
$9,405 (+22.0%)
$253,812 + $368,535
$622,347
2014
$7,708 (+1.7%)
$301,153 + $180,763
$481,916
2013
$7,581 (+7.7%)
$301,153 + $180,763
$481,916
2012
$7,039 (+1.2%)
$299,792 + $179,947
$479,739
2011
$6,953 (+4.9%)
$293,914 + $176,419
$470,333
2010
$6,627 (+3.5%)
$288,151 + $172,960
$461,111
2009
$6,400 (+8.7%)
$285,998 + $171,668
$457,666
2008
$5,886
$286,678 + $172,076
$458,754
*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
3
Baths
3
Stories
1
Lot width
—
Lot depth
—
Lot size
1.17 Acres
Year renovated
1965
Sq. Ft.
2,660
Year built
1936
Style
Single Family Residential
County
Contra Costa County
APN
4251700383
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Oct 10, 2026.
P-1
Planned Unit District
A large-scale integrated development or a general plan special area of concern provides an opportunity for, and requires cohesive design when flexible regulations are applied; whereas the application of conventional regulation, designed primarily for individual lot development, to a large-scale development or special area may create a monotonous and inappropriate neighborhood. The planned unit district is intended to allow diversification in the relationship of various uses, buildings, structures, lot sizes and open space while insuring substantial compliance with the general plan and the intent of the county code in requiring adequate standards necessary to satisfy the requirements of the public health, safety and general welfare. These standards shall be observed without unduly inhibiting the advantages of large-scale site or special area planning.
Permitted uses
Include but are not limited to:
Housing-Single unit
Oct 8, 2014 • Final
Building - residential plumbing
Install an automatic gas shut-off valve.
Gas
Jan 30, 2010 • Final
Building - residential electrical
Install or repair underground electrical service.
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
Parking
Parking Information
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Detached, RV/Boat Parking
Interior
Bathroom Information
# of Bathrooms Total: 4
# of Bathrooms Full: 3
# of Bathrooms Partial: 1
Interior Features
Interior Features: Au Pair, In-Law Floorplan, Workshop, Updated Kitchen
Laundry Features: Laundry Room
Upper Level Features: 3 Bedrooms, 1 Bath, Main Entry
Street Level Features: 1 Bedroom, 1.5 Baths, Laundry Facility
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood
Room Information
Kitchen Features: Updated Kitchen
Rooms Total: 8
Fireplace Features: Family Room
Exterior
Building Information
Construction Materials: Stucco
Building Area Total: 3,273
Exterior Features
Exterior Features: Back Yard, Dog Run, Front Yard, Side Yard
Fencing: Fenced
Roof: Shingle
Property Information
Living Area: 3273
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1936
Lot Information
Other Structures: Guest House
Lot Size Square Feet: 50965
Lot Size Area: 1.17
Lot Size Units: Acres
Lot Size Acres: 1.17
Lot Features: 2 Houses / 1 Lot, Irregular Lot
Zoning: R-7
Utilities
Utility Information
Water Source: Public
Sewer: Public Sewer
Heating & Cooling
Has Heating
Heating: Floor Furnace
Cooling: No Air Conditioning
Location
Homeowners Association Information
Pets Allowed: Yes
Public facts
Beds: 3
Baths: 3.0
Sq. Ft.: 2,660
Stories: 1.0
Lot Size: 1.17 acres
Style: Single Family Residential
Year Built: 1936
Year Renovated: 1965
County: Contra Costa County
APN: 4251700383
Home facts updated by county records on Oct 10, 2026
Around this home
Schools
Sheldon Elementary School
Public K-6 • Assigned • 0.6mi
6/10
Betty Reid Soskin Middle
Public 6-8 • Assigned • 1.2mi
2/10
De Anza Senior High School
Public 9-12 • Assigned • 1.1mi
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
3/10 Fire Factor
0.31% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 88° expected this year, 15 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
15 unhealthy days expected this year, 15 days in 30 years
Provided by First Street
Historical weather
El Sobrante, CA • 94803
Average low and high temperatures (°F)
59
44
61
45
67
49
65
49
69
51
68
52
69
54
73
55
73
58
73
54
61
48
57
45
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.1 hours in
June and 5 hours in December, placing it above the
U.S. average for solar exposure.
11.1 hrs
5 hrs
JuneDecember
Provided by Shadowmap
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Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2014. This data may not match public records. Learn more.