20 Roberts Ave is a 844 square foot house on a 2,205 square foot lot with 1 bedroom and 1 bathroom. - it last sold on February 01, 2008 for $375,000. Based on Redfin's San Rafael data, we estimate the home's value is $523,863.
Single-familyProperty Type
1905Year Built
2,205 sq ftLot Size
$621Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$523,863
$149K since sold in February 2008$10K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 37.3% lower than the average sale price ($835K) 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
R5
Single-Family Residential District
The single-family residential districts provide opportunities for low-density, detached single-family residential development. Development densities are based on existing development patterns in the area and environmental site constraints. In hillside areas, development shall conform to the hillside development standards and review procedures established in Chapter 14.12, Hillside Development Overlay District.; Single-family residential districts include hillside resource residential land use categories with minimum densities of 2 or more acres for minimum lot sizes; hillside residential and residential estate categories with densities from 20,000 sq ft to 2 acre lot minimums; and low-density residential land use categories with densities ranging from 5,000 sq ft to 20,000 sq ft lot minimums.
Permitted uses
Include but are not limited to:
Garden center
Housing-Single unit
Housing-Multiple units
Housing-Senior
Educational/school
Recreation
Park & open space
Apr 24, 2008 • Final
Demo
Demolish unauthorized improvements in the attic of a residential building.
Demolition
Apr 24, 2008 • Final
Plumbing
Demolish unauthorized improvements in the attic of a residential building.
Demolition
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
Basement Information
Basement Sq. Ft: 305
Basement Type: Unfinished
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Exterior
Exterior Information
Building Style Type: Contemporary
Building Construction Quality: Average
Property Information
Subdivision Name: PICNIC VLY
Living Sq. Ft: 844
Building Sq. Ft: 1,149
# of Units: 1
Lot Information
# of Buildings: 1
Land Sq. Ft: 2,205
Municipality Name: SAN RAFAEL
Acres: 0.0506
County Use Description: 1 FAMILY RESID
Financial
Assessor Information
Assessment Year: 2026
Tax Area: SAN RAFAEL
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 844
Stories: —
Lot Size: 2,205 square feet
Style: Single Family Residential
Year Built: 1905
Year Renovated: 1925
County: Marin County
APN: 013-122-08
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Laurel Dell Elementary School
Public K-5 • Assigned • 0.1mi
8/10
James B. Davidson Middle School
Public 6-8 • Assigned • 0.2mi
6/10
San Rafael High School
Public 9-12 • Assigned • 1.0mi
6/10
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
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
3/10 Heat Factor
7 days above 86° expected this year, 16 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
San Rafael, CA • 94901
Average low and high temperatures (°F)
59
42
61
45
69
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47
72
50
75
52
74
54
80
55
78
55
74
52
62
47
55
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 10.6 hours in
June and 5 hours in December, placing it above the
U.S. average for solar exposure.
10.6 hrs
5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$498,000 – $603,000
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