Google street view image for 8 Unionstone Dr, San Rafael, CA 94903

Off market oct 2002 for $648K

$1,596,690

Est. refi paymentEst. refi $4,372/mo

•

3 ba

•

2,238

sq ft

8 Unionstone Dr, San Rafael, CA 94903

About this home

8 Unionstone Dr is a 2,238 square foot house on a 7,700 square foot lot with 3 bedrooms and 3 bathrooms. - it last sold on October 18, 2002 for $648,500. Based on Redfin's San Rafael data, we estimate the home's value is $1,596,690.

Single-familyProperty Type

1965Year Built

7,700 sq ftLot Size

$713Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,596,690

$948K since sold in October 2002$5,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 4.7% higher than the average sale price ($1.53M) of 5 comparable homes.

SOLD JUL 2, 2026
$2,015,000
A
4 beds2.5 baths2,230 sq ft
159 Lucas Park Dr, San Rafael, CA 94903
SOLD OCT 16, 2026
$1,430,000
B
4 beds2.5 baths2,046 sq ft
157 Deepstone Dr, San Rafael, CA 94903
SOLD AUG 7, 2026
87 Twelveoak Hill Dr, San Rafael, CA 94903
$1,476,000
C
3 beds2.5 baths1,638 sq ft
87 Twelveoak Hill Dr, San Rafael, CA 94903
SOLD OCT 13, 2026
$1,495,000
D
4 beds2.5 baths2,016 sq ft
58 Maple Hill Dr, San Rafael, CA 94903
SOLD AUG 21, 2026
$1,210,000
E
4 beds3 baths1,901 sq ft
24 Corte Miguel, San Rafael, CA 94903

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Earn from this home

Sell

$1,354,864

Est. take-home

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Refinance

Est. cash available

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Rent

$5,326/mo

Redfin rental estimate

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Market trends in 94903, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

101.6%

0.3% MoM

Median sale price

$1.2M

$20K MoM

Avg. days on market

29d

3 days MoM

Recently sold homes

5 MoM

New listings for sale

$1,650,000
4 beds2 baths1,502 sq ft
762 Idylberry Rd, San Rafael, CA 94903
VIDEO TOUR
$2,385,000
4 beds2 baths1,882 sq ft
1212 Idylberry Rd, San Rafael, CA 94903
$210,000
1 bed1 bath660 sq ft
100 Thorndale Dr #245, San Rafael, CA 94903
$629,000
2 beds2 baths1,333 sq ft
260 Channing Way #2, San Rafael, CA 94903
$1,483,800
4 beds2 baths1,697 sq ft
833 Appleberry Dr, San Rafael, CA 94903
$449,999
2 beds2.5 baths1,236 sq ft
60 Almond Ct, San Rafael, CA 94903
$1,450,000
4 beds3 baths2,296 sq ft
48 Canyon Oak Dr, San Rafael, CA 94903
$450,000
1 bed1 bath804 sq ft
5 Forest Ln, San Rafael, CA 94903
EARLY ACCESS
$210,000
1 bed1 bath660 sq ft
100 Thorndale Dr #437, San Rafael, CA 94903
VIDEO TOUR
$1,675,000
4 beds2.5 baths1,783 sq ft
772 Beechnut Ct, San Rafael, CA 94903
See all

Provided by Redfin

Sale history for 8 Unionstone Dr

Year

Property tax

Land + Additions

Assessment*

2025

$14,697 (+3.1%)

$369,290 + $588,648

$957,938

2024

$14,257 (+0.8%)

$362,050 + $577,107

$939,157

2023

$14,148 (+4.3%)

$354,952 + $565,794

$920,746

2022

$13,567 (+4.8%)

$347,995 + $554,704

$902,699

2021

$12,950 (+0.4%)

$341,172 + $543,828

$885,000

2020

$12,903 (+4.1%)

$334,485 + $533,169

$867,654

2019

$12,399 (+1.5%)

$331,057 + $527,705

$858,762

2018

$12,213 (+5.8%)

$324,567 + $517,360

$841,927

2017

$11,538 (+2.3%)

$311,967 + $497,276

$809,243

2016

$11,282 (+2.7%)

$311,967 + $497,276

$809,243

2015

$10,990 (+6.6%)

$305,852 + $487,528

$793,380

2014

$10,307 (+2.6%)

$295,360 + $470,803

$766,163

2013

$10,049 (+4.5%)

$295,360 + $470,803

$766,163

2012

$9,616 (+0.5%)

$285,690 + $455,391

$741,081

2011

$9,573 (+1.7%)

$272,086 + $433,706

$705,792

2010

$9,412 (+1.3%)

$280,502 + $447,120

$727,622

2009

$9,292 (+5.1%)

$280,502 + $447,120

$727,622

2008

$8,839

$281,170 + $448,184

$729,354

Tax history for 8 Unionstone Dr

Year

Property tax

Land + Additions

Assessment*

2025

$14,697 (+3.1%)

$369,290 + $588,648

$957,938

2024

$14,257 (+0.8%)

$362,050 + $577,107

$939,157

2023

$14,148 (+4.3%)

$354,952 + $565,794

$920,746

2022

$13,567 (+4.8%)

$347,995 + $554,704

$902,699

2021

$12,950 (+0.4%)

$341,172 + $543,828

$885,000

2020

$12,903 (+4.1%)

$334,485 + $533,169

$867,654

2019

$12,399 (+1.5%)

$331,057 + $527,705

$858,762

2018

$12,213 (+5.8%)

$324,567 + $517,360

$841,927

2017

$11,538 (+2.3%)

$311,967 + $497,276

$809,243

2016

$11,282 (+2.7%)

$311,967 + $497,276

$809,243

2015

$10,990 (+6.6%)

$305,852 + $487,528

$793,380

2014

$10,307 (+2.6%)

$295,360 + $470,803

$766,163

2013

$10,049 (+4.5%)

$295,360 + $470,803

$766,163

2012

$9,616 (+0.5%)

$285,690 + $455,391

$741,081

2011

$9,573 (+1.7%)

$272,086 + $433,706

$705,792

2010

$9,412 (+1.3%)

$280,502 + $447,120

$727,622

2009

$9,292 (+5.1%)

$280,502 + $447,120

$727,622

2008

$8,839

$281,170 + $448,184

$729,354

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Property details

Interior

Heating & Cooling
Heating Type: Central

Fireplace Information
# of Fireplaces: 1
Has Fireplace

Exterior

Exterior Information
Building Style Type: Contemporary
Building Construction Quality: Good

Property Information
Subdivision Name: MARINWOOD #7
Living Sq. Ft: 2,238
Building Sq. Ft: 2,238
# of Units: 1
# of Stories: 1
Legal Description: MAP E5 546

Parking & Garage Information
Garage/Parking Sq. Ft: 484

Lot Information
# of Buildings: 1
Land Sq. Ft: 7,700
Legal Lot Number: 995
Municipality Name: DIXIE SCHOOL AREA (MARINWOOD)
Acres: 0.1768
County Use Description: 1 FAMILY RESID

Financial

Assessor Information
Assessment Year: 2026
Tax Area: DIXIE SCHOOL AREA (MARINWOOD)

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,238
Stories: 1.0
Lot Size: 7,700 square feet
Style: Single Family Residential
Year Built: 1965
Year Renovated: 1979
County: Marin County
APN: 164-172-10

Home facts updated by county records on Oct 19, 2026

Around this home

Schools

Mary E. Silveira Elementary School

Public K-5 • Assigned • 0.2mi

7/10

Miller Creek Middle School

Public 6-8 • Assigned • 0.7mi

10/10

Terra Linda High School

Public 9-12 • Assigned • 2.8mi

9/10

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

1% chance of being in a wildfire in next 30 years

3/10 Heat Factor

8 days above 88° expected this year, 18 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 • 94903

Average low and high temperatures (°F)

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

$1.52M – $1.84M

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Home values near 8 Unionstone Dr

Data from public records.

Address	Redfin Estimate
12 Unionstone Drive, San Rafael, CA 5 Beds \| 3 Baths \| 2391 Sq. Ft.	$1,739,544
20 Unionstone Drive, San Rafael, CA 4 Beds \| 2 Baths \| 1612 Sq. Ft.	$1,377,895

Address	Redfin Estimate
11 Unionstone Drive, San Rafael, CA 4 Beds \| 2 Baths \| 1748 Sq. Ft.	$1,632,797
18 Unionstone Drive, San Rafael, CA 4 Beds \| 2 Baths \| 1728 Sq. Ft.	$1,386,212

Address	Redfin Estimate
14 Unionstone Drive, San Rafael, CA 4 Beds \| 2 Baths \| 1642 Sq. Ft.	$1,316,334
7 Unionstone Drive, San Rafael, CA 3 Beds \| 2 Baths \| 1552 Sq. Ft.	$1,304,015

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 94903, CA

Sale history for 8 Unionstone Dr

Tax history for 8 Unionstone Dr

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94903

Home values near 8 Unionstone Dr

More real estate resources