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343 21st Avenue, San Francisco, CA 94121 Property Information

343 21st Avenue, San Francisco, CA 94121 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Neighborhood
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343 21st Avenue, San Francisco, CA 94121
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Address

Primary address 343 21st Avenue, San Francisco
Zip code 94121
County San Francisco
Neighborhood Central Richmond
Parcel ID 1453-008

Sales & Tax Overview for 343 21st Avenue, San Francisco

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Property tax $6,362

Lot & Building Information for 343 21st Avenue, San Francisco

Building sqft 4,360
Building class Apartments 5 to 14 Units (A5)
Acreage 0.069
Rooms 20
Units 6
Year built 1961
Stories 2
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Zoning, Use & Area Overview

Walk Score
Transit Score
Bike Score


Zoning district
School district San Francisco Unified School District

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Other Property Data for 343 21st Avenue, San Francisco

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About 343 21st Avenue, San Francisco

What is the year built & the total sq. ft. for 343 21st Avenue, San Francisco, CA 94121?

343 21st Avenue, San Francisco, CA 94121 was built in 1961 and has a total of 4,360 square feet.

What is the assessed value of 343 21st Avenue, San Francisco, CA 94121 and the property tax paid?

Assessed at $537,959, the tax amount paid for 343 21st Avenue, San Francisco, CA 94121 is $6,362.

When was 343 21st Avenue, San Francisco, CA 94121 last sold?

343 21st Avenue, San Francisco, CA 94121 was last sold in 11/09/2021.

How many residential units does this building have?

This building has 6 residential unit(s).

Ownership Information

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Real Estate Reports:
Eliza Theiss, Jul 22, 2026 Prices Rise in 32 of NYC’s Leading Neighborhoods as City and Manhattan Hit Record Highs
Q2 2026 saw NYC and Manhattan reach historic highs, with Brooklyn and Queens marking close to new records as well. Meanwhile, Hudson Yards remained at the top, Central Midtown posted its highest price ever and Carroll Gardens marked its third consecutive quarter over $2 million
Laura Pop-Badiu, Jul 15, 2026 How to Find Property Owners — The Complete Guide 
For real estate professionals looking for the best ways to find property owners — whether through free methods based on public sources or paid tools with verified, in-depth data — this comprehensive guide breaks down every step of the due diligence process.
Eliza Theiss, Jul 08, 2026 2026 Q2 Foreclosure Report: Bronx Caseload Hits 7-Year High, Brooklyn & Manhattan Slow to 4-Year Low
Manhattan yet again slowed to become the city’s least active foreclosure market, Brooklyn’s caseload dropped so low it barely edged out Staten Island, while the Bronx heated up enough to surpass all boroughs except Queens.
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Past Sales & Property History for 343 21st Avenue, San Francisco

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No recorded sales for this property.

Title Documents for 343 21st Avenue, San Francisco

To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.

Date Type Amount Party 1 Party 2 Maturity Document Doc image
11/09/2021 Quitclaim Deed
02/09/2021 Quitclaim Deed
02/09/2021 Quitclaim Deed
05/06/1998 Deed
               
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R: Recorded date
D: Document date

Property Taxes for 343 21st Avenue, San Francisco

Access detailed property tax data for 343 21st Avenue, San Francisco, CA 94121. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year: 2025-2026
Property tax $6,362
Market value $537,959

Assessment History for 343 21st Avenue, San Francisco

Here's the assessment & property tax history for 343 21st Avenue, San Francisco, including the evolution of the total tax rate and corresponding property tax.

Year Assessment value Total tax rate Property tax Year over year change
2025-2026 $537,959 1.1827 $6,362 +3.10%
2024-2025 $526,817 1.1714 $6,171 +1.45%
2023-2024 $516,488 1.1777 $6,083 +1.83%
2022-2023 $506,362 1.1797 $5,974 +1.76%
2021-2022 $496,435 1.18248 $5,870 -0.31%

San Francisco residential market stats

Median Sale Price
$1,500,000
15.4% YoY
Median Price/Sqft
$1,155
11.2% YoY
San Francisco County Median Sale Price
$1,500,000
15.4% YoY

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 County.

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Demographics by Zip Code

Total population 41,995
Median age 44.5
Average household income $202,368
Family households 55.3%
Occupied housing units 18,206
Owner occupied units 43.9%
People per household (average) 2.28
Median year structure built 1938
Median value for units with a mortgage $1,804,800
Median value for units without a mortgage $1,411,300

Risk

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FEMA flood zone(s) X (See more on map)
Fire hazard zone See more on map
Faults and tsunami inundation zone map
Landslides and liquefaction map
Crime incidents map

Transportation

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View daily traffic map

Neighbors for 343 21st Avenue, San Francisco

Here are the neighbors for 343 21st Avenue, San Francisco.

Address Square feet Purchase date Purchase price
347 21st Ave, San Francisco 3,600 06/08/2016
331 21st Ave, San Francisco 3,948 03/04/1988 $600,000
327 21st Ave, San Francisco 2,700 11/20/2017
359 21st Ave, San Francisco 4,300 03/22/2005
319 21st Ave, San Francisco 3,250 04/21/2020
307 21st Ave, San Francisco 2,200 03/03/2011
367 21st Ave, San Francisco 1,550 08/25/2020 $1,786,000
2011 Clement St, San Francisco 5,980 10/24/2025
375 21st Ave, San Francisco 2,750 03/18/2016
5716 Geary Blvd, San Francisco 5,601 03/28/2018
335 21st Ave, San Francisco 2,210 11/05/2020
339 21st Ave, San Francisco 3,308 04/22/2021
311 21st Ave, San Francisco 2,200 11/09/2022 $1,620,000
351 21st Ave, San Francisco 3,912 03/11/2011
355 21st Ave, San Francisco 5,440 03/29/2018
323 21st Ave, San Francisco 2,619 10/12/2021 $3,100,000
363 21st Ave, San Francisco 5,939 08/22/2017 $1,750,000
369 21st Ave, San Francisco 4,038 07/03/2025 $2,015,000
381 21st Ave, San Francisco 6,050 07/01/2022 $2,800,000
315 21st Ave, San Francisco 2,519 02/09/2021

Nearby ZIP Codes for 343 21st Avenue, San Francisco

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