San Francisco County  »  94133  »  Mason St  »  1901 Mason St

1901 Mason Street, San Francisco, CA 94133 - Property report

Also known as: 800 Filbert St

Property image for 1901 Mason Street, San Francisco, CA 94133
static Mapbox map

Property type

Apartment (1)

Year built

1909

Lot sq. ft.

3,398

General Information

Address
Primary address
1901 Mason St
San Francisco, CA 94133
Alternate address(es)
1909 Mason St
800 Filbert St
802 Filbert St
Zip code
94133
Neighborhood
Russian Hill
County
San Francisco
Municipality
City of San Francisco
Parcel ID
0091-006

Owner

Find out who owns 1901 Mason Street, San Francisco, CA 94133. Uncover corporate and individual owners with a free account.

Tax
Tax year
2026-2027
Property tax
$4,968
Building
Property type
Apartment
Building sq. ft.
10,200
Stories
3
Year built
1909
Rooms
43
Lot
Acreage
0.078
Lot sq. ft.
3,398
Zoning & use
Zoning
Qualified opportunity zone
Units
9

Area overview

Walk score
99 /100.  Walker's Paradise
Transit score
86 /100.  Excellent Transit
Bike score
67 /100.  Bikeable
School district
San Francisco Unified School District

Ownership information for 1901 Mason Street, San Francisco, CA

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address

Sales history for 1901 Mason Street, San Francisco, CA 94133

No recently recorded sales for this property.

More about San Francisco County property records.

Title documents

Date Type Amount Party 1 Party 2 Doc #
04/13/2023 Trust Transfer Deed XXX XXXXXXX X XXXXXXX XXX XXXXX XXXXX
04/13/2023 Quitclaim Deed XXXXXXX XXXX XXX XXXXX XXXXX XXX XXXXXXX X
03/15/2018 Grant Deed XXX XXXXXXX X XXXXXXX & XXXX XXX XXX XX - XXX XXXX
03/15/2018 Quitclaim Deed XXX XXXX XXX XXX XXXXXXX X
11/03/2016 Decree/Final Distribution XXXXXX XXXXXX X XXXXXX XX XXXXXX XXXXX XXXXXX
06/02/2016 Grant Deed XXX XXXXXX XXX XXXXXX
04/15/2002 Affadavit Death XXXXXX XXXXXXXX X
01/14/1998 Decree/Final Distribution XXX XXXXX X XXX XXXXXXX X
06/21/1991 Affadavit Death XXXXXX XXXX X
01/18/1990 Decree/Final Distribution XXXXX XXXX XXXXX XXXX XXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Property taxes for 1901 Mason Street, San Francisco, CA

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2026-2027
Property tax
$4,968
Recent tax assessments
Market value
$420,069
Land value
$185,225
Building value
$234,844

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Assessed value Tax rate Property tax Y-o-Y change
2025-2026 $409,529 1.1827 $4,843 +2.98%
2024-2025 $401,501 1.1714 $4,703 +1.45%
2023-2024 $393,632 1.1777 $4,636 +1.83%
2022-2023 $385,916 1.1797 $4,553 +1.76%
2021-2022 $378,350 1.18248 $4,474 -0.31%
2020-2021 $374,474 1.1984 $4,488 +3.58%
2019-2020 $367,135 1.1801 $4,333 +3.51%
2018-2019 $359,904 1.163 $4,186 +1.17%
2017-2018 $352,927 1.1723 $4,137 +1.11%
2016-2017 $346,008 1.1826 $4,092 +1.52%

Permit information for 1901 Mason Street, San Francisco, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
06/24/2019
03/27/2019
02/12/2019
08/18/2017
08/18/2017

*Most recent permits on record for this property.

San Francisco residential market stats

Access a detailed real estate market overview of San Francisco so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in San Francisco and compare it to other neighborhoods in San Francisco.

Median sale price

$1,500,000

15.4% Y-o-Y

Median price/sq. ft.

$1,155

11.2% Y-o-Y

San Francisco county median sale price

$1,500,000

15.4% Y-o-Y

Check out recently sold homes in San Francisco and see how their prices compare.

Demographics by ZIP code

Total population
23,804
Median age
45.5
Average household income
$153,281
Family households
39.1%
People per household (average)
1.87
Occupied housing units
12,653
Owner-occupied units
16.5%
Median year structure built
1938
Median value mortgaged units
$1,603,200
Median value unmortgaged units
$1,517,100

Risk

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FEMA flood zones

FEMA flood zones
X
Landslides and liquefaction map

Fire hazard zones

Faults and tsunami inundation zones map
Crime incidents map

Transportation

Daily traffic map

Access the detailed traffic volume map for 1901 Mason Street, San Francisco, CA 94133 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Frequently asked questions

What is the year built for 1901 Mason Street, San Francisco, CA 94133?

The development at 1901 Mason Street, San Francisco, CA 94133 was built in 1909.

What is the total square footage of 1901 Mason Street, San Francisco, CA 94133?

1901 Mason Street, San Francisco, CA 94133 has a total of 10,200 square feet.

What is the assessed value of 1901 Mason Street, San Francisco, CA 94133?

1901 Mason Street, San Francisco, CA 94133 is currently assessed at $409,529.

What are the property taxes for 1901 Mason Street, San Francisco, CA 94133?

The property taxes for 1901 Mason Street, San Francisco, CA 94133 total $4,843.

How many residential units does this building have?

This building has 9 residential unit(s).

Disclaimer

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