170 Main Dr is a 3,345 square foot house on a 2.18 acre lot with 4 bedrooms and 3 bathrooms. - it last sold on October 15, 2014 for $1,875,000. Based on Redfin's San Rafael data, we estimate the home's value is $4,103,268.
Single-familyProperty Type
1951Year Built
2.18 acresLot Size
$1,227Est. Price/Sq.Ft.
2 car garageParking
Source:Public Records
Redfin Estimate
$4,103,268
$2.2M since sold in October 2014$1.2M since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 76.1% higher than the average sale price ($2.33M) of 5 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
PD
Planned Development District
The specific purposes of the planned development (PD) district are to: Promote and encourage cluster development on large sites to avoid sensitive areas of property; Encourage innovative design on large sites by allowing flexibility in property development standards; Encourage the establishment of open areas in land development; Encourage the assembly of properties that might otherwise be developed in unrelated increments to the detriment of surrounding neighborhoods; Establish a procedure for the development of large lots of land in order to reduce or eliminate the rigidity, delays and conflicts that otherwise would result from application of zoning standards and procedures designed primarily for small lots; Accommodate various types of large-scale, complex, mixed-use, phased developments; Enable affected governmental bodies to receive information and provide an integrated response to both the immediate and long-range impacts of such proposed developments.
Permitted uses
Include but are not limited to:
Garden center
Recreation
Park & open space
Mar 9, 2026 • Final
Building
Install a new ground-mounted solar system and battery storage.
Battery
Electrical
Solar
Feb 10, 2015 • Final
Mechanical
Install a new heating and cooling unit to convert a storage area into a playroom. Perform associated electrical work.
Electrical
HVAC
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
Interior
Basement Information
Basement Sq. Ft: 600
Basement Type: Unfinished
Heating & Cooling
Heating Type: Central
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Exterior
Exterior Information
Building Style Type: Contemporary
Building Construction Quality: Good
Pool Information
Has Pool
Property Information
Subdivision Name: BAYSIDE ACRES 02
Living Sq. Ft: 3,345
Building Sq. Ft: 3,945
# of Units: 1
Legal Description: MAP 4 PG 61 LOT 5
Lot Information
# of Buildings: 1
Land Sq. Ft: 94,960
Legal Lot Number: 5
Municipality Name: SAN RAFAEL
Acres: 2.18
County Use Description: 1 FAMILY RESID
Financial
Assessor Information
Assessment Year: 2026
Tax Area: SAN RAFAEL
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 3,345
Stories: —
Lot Size: 2.18 acres
Style: Single Family Residential
Year Built: 1951
Year Renovated: 1971
County: Marin County
APN: 186-051-13
Home facts updated by county records on Oct 12, 2026
Around this home
Schools
Glenwood Elementary School
Public K-5 • Assigned • 0.4mi
7/10
James B. Davidson Middle School
Public 6-8 • Assigned • 2.6mi
6/10
San Rafael High School
Public 9-12 • Assigned • 1.8mi
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
3/10 Fire Factor
0.15% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 85° 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
San Rafael, CA • 94901
Average low and high temperatures (°F)
59
42
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45
69
48
67
47
72
50
75
52
76
55
80
55
77
57
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 10.8 hours in
June and 5 hours in December, placing it above the
U.S. average for solar exposure.
10.8 hrs
5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$3.90M – $4.72M
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