San Francisco County » 94121 » 21st Ave » 20 21st Ave

20 21st Avenue, San Francisco, CA 94121 - Property report

Also known as: 20 21st Ave

Property image for 20 21st Avenue, San Francisco, CA 94121

Property type

Single Family Residence (31)

Year built

1914

Lot sq. ft.

9,191

General Information

Address

Primary address

20 21st Ave
San Francisco, CA 94121

Zip code

94121

Neighborhood

Lake Street

County

San Francisco

Municipality

City of San Francisco

Parcel ID

1338-020

Tax

Tax year

2026-2027

Property tax

$3,693

Tax per sq. ft.

Building

Property type

Single Family Residence

Building sq. ft.

6,449

Stories

Year built

1914

Rooms

Bathrooms

Lot

Acreage

0.211

Zoning & use

Zoning

Residential- House, One Family (RH-1)

Units

Area overview

Walk score

87 /100. Very Walkable

Transit score

65 /100. Good Transit

Bike score

73 /100. Very Bikeable

School district

San Francisco Unified School District

Ownership

Ownership information for 20 21st Avenue, San Francisco, CA

Property owner name

Registered owner

Source

Deed

Owner contact information

Phone number

Owner address

Documents

Sales history for 20 21st Avenue, San Francisco, CA 94121

No recently recorded sales for this property.

More about San Francisco County property records.

Title documents

Date	Type	Party 1	Party 2
10/30/2012	Deed	XXXXXXXX XXXX X	XXXXXXXX XXXXXX XXXX XXXXX XX
10/30/2012	Deed of Trust	XXXXXXXX XXXX X	XXXX XX XXXXXXX XX
09/21/2012	Deed	XXXXXXXX XXXXXX XXXX XXXXXXX XX	XXXXXXXX XXXX X
06/18/2009	Deed	XXXXXXXX XXXX X	XXXXXXXX XXXXXX XXXX XXXXXXX XX
03/30/2009	Deed	XXXXXXXX XXXX X	XXXXXXXX XXXX X
03/30/2009	Deed of Trust	XXXXXXXX XXXX X	XXXX XX XXXXXXX XX
03/30/2009	Deed	XXXXXXXX XXXX X	XXXXXXXX XXXX X
03/17/2009	Deed	XXXXXXXX XXXX X	XXXXXXXX XXXXXX XXXX XXXXXXX XX
10/30/2008	Deed	XXXXXXXX XXXXXX XXXX XXXXXXX XX	XXXXXXXX XXXX X
05/14/2007	Deed	XXXXXXXX XXXX X	XXXXXXXX XXXXXX XXXX XXXXXXX XX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 20 21st Avenue, 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

$3,693

Tax per sq. ft.

Recent tax assessments

Market value

$312,236

Land value

$111,695

Building value

$200,541

More about San Francisco County property taxes

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	$305,932	1.1827	$3,618	+2.98%
2024-2025	$299,938	1.1714	$3,513	+1.45%
2023-2024	$294,060	1.1777	$3,463	+1.83%
2022-2023	$288,298	1.1797	$3,401	+1.77%
2021-2022	$282,649	1.18248	$3,342	-0.31%
2020-2021	$279,753	1.1984	$3,353	+3.58%
2019-2020	$274,273	1.1801	$3,237	+3.51%
2018-2019	$268,870	1.163	$3,127	+1.19%
2017-2018	$263,603	1.1723	$3,090	+1.11%
2016-2017	$258,439	1.1826	$3,056	+1.52%

Permits

Permit information for 20 21st Avenue, San Francisco, CA

Issued date	Permit number	Permit type	Sub type	Valuation	Finaled date	Status
02/09/2026
11/02/2018
10/18/2018
10/13/1995
11/15/1990

*Most recent permits on record for this property.

Neighborhood

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.

Risk

Create a free account to unlock expanded risk information, such as crime incidents in the area, tsunami and landslides risks, or its location relative to FEMA flood zones and the Coastal Barriers Resources System Area (COBRA).

FEMA flood zones

FEMA flood zones

Landslides and liquefaction map

Fire hazard zones

Faults and tsunami inundation zones map

Crime incidents map

Transportation

Daily traffic map

View daily traffic map

Access the detailed traffic volume map for 20 21st Avenue, San Francisco, CA 94121 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Schools

Nearest elementary schools

Name	Rating	Type	Grade range	No of students	Distance (miles)
Kittredge, Inc.	NR	Private	1-8	82	0.25
Alamo Elementary School	8	Public	K-5	410	0.29
St. Monica School	NR	Private	K-8	209	0.48
San Francisco Schoolhouse	NR	Private	K-7	60	0.50
St. John Of San Francisco Orthodox Acade	NR	Private	K-12	50	0.53
Sutro Elementary School	9	Public	K-5	219	0.54
Katherine Delmar Burke School	NR	Private	K-8	402	0.71
Argonne Elementary School	6	Public	K-5	361	0.83
Peabody (George) Elementary School	8	Public	K-5	269	0.88

Nearest middle schools

Name	Rating	Type	Grade range	No of students	Distance (miles)
Kittredge, Inc.	NR	Private	1-8	82	0.25
St. Monica School	NR	Private	K-8	209	0.48
San Francisco Schoolhouse	NR	Private	K-7	60	0.50
St. John Of San Francisco Orthodox Acade	NR	Private	K-12	50	0.53
Presidio Middle School	7	Public	6-8	978	0.63
Olympia Institute	NR	Private	6-11	8	0.67

Nearest high schools

Name	Rating	Type	Grade range	No of students	Distance (miles)
St. John Of San Francisco Orthodox Acade	NR	Private	K-12	50	0.53
Olympia Institute	NR	Private	6-11	8	0.67
San Francisco County Rop School	NR	Public	10-12	0	0.79
Erikson School	NR	Private	6-12	7	0.80
Nativity High school	NR	Private	9-12	0	0.81
Lisa Kampner Hebrew Academy	NR	Private	K-12	37	0.85
Washington (George) High School	9	Public	9-12	2,036	0.86
Independence High School	5	Public	9-12	205	1.87
Wallenberg (Raoul) Traditional High School	7	Public	9-12	549	1.93

Nearby ZIP codes for 20 21st Avenue, San Francisco, CA

Frequently asked questions

What is the year built for 20 21st Avenue, San Francisco, CA 94121?

The development at 20 21st Avenue, San Francisco, CA 94121 was built in 1914.

What is the total square footage of 20 21st Avenue, San Francisco, CA 94121?

20 21st Avenue, San Francisco, CA 94121 has a total of 6,449 square feet.

What is the assessed value of 20 21st Avenue, San Francisco, CA 94121?

20 21st Avenue, San Francisco, CA 94121 is currently assessed at $305,932.

What are the property taxes for 20 21st Avenue, San Francisco, CA 94121?

The property taxes for 20 21st Avenue, San Francisco, CA 94121 total $3,618.

Disclaimer

All data comes from government sources. No attempt has been made to validate it. No attempt has been made to validate the accuracy of the programming of this website.

Do not rely on this report to support investment decisions. The only authoritative source for the information in this report is the government agencies from which the data was acquired.