643 21st Ave San Francisco, CA 94121 / 3807

Residence for Single Family

(UPDATED: 09/26/2025)
  • 4 Beds
  • 2 Baths
  • 2.928 square feet
Property Report

Information about property on 643 21st Ave, San Francisco CA, 94121-3807. Find out owner contacts, building history, price, neighborhood at Homemetry Address Directory.

Property Details

A single-family property at 643 21st Avenue, San Francisco, CA.

Facts

  • Built in 1917
  • Lot size 2,928 sqft
  • Construction Wood
  • Rooms 7
  • Bedrooms 4
  • Bathrooms 2
  • Stories 2 story

Misc

  • Units 1

Householders and Tenants for 643 21st Ave, San Francisco CA

Possible residents contact details

Person Name Phone Number Additional Info
Alexandra C Lew
415-387-****
Residential status:
Homeowner
Dave E Lew
415-387-****
Residential status:
Homeowner
Harry J Lew Age: 71
415-664-****
Residential status:
Homeowner
Job:
Clerical/White Collar
Jonathan R Lew
415-387-****
Residential status:
Homeowner

Cost estimate history

YearTaxAssessmentMarket
2014 $3,130 $244,768 N/A

Where is 643 21st Ave, San Francisco CA located on map?

Building Permits

To date, we have no information about building permits in 2025
Nov 30, 2006
Description: Reroofing
  • Valuation: $800,000
  • Parcel #: 1623/008
  • Permit #: 200611308861

21st Ave Fire Incident History

To date, we have no information about fire incidents in 2025
26 Jun 2018 Building fires
Property Use —
1 or 2 family dwelling
Area of Origin —
Wall surface: exterior
First Ignition —
Exterior wall covering or finish
Heat Source —
Heat from powered equipment, other
06 Feb 2018 Fire, other
Property Use —
Multifamily dwellings
First Ignition —
Organic materials, other
25 Jan 2018 Fire, other
Property Use —
1 or 2 family dwelling
27 Aug 2016 Building fires
Property Use —
1 or 2 family dwelling
Area of Origin —
Exterior stairway, ramp, or fire escape
First Ignition —
Rubbish, trash, or waste
Heat Source —
Hot ember or ash

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21st Ave Incidents registered in FEMA
(Federal Emergency Management Agency)

To date, we have no information about incidents registered in FEMA in 2025
08 Mar 2015 Cooking fire, confined to container
Property Use —
1 or 2 family dwelling
19 Feb 2015 Outside rubbish fire, other
Property Use —
Residential, other
06 Dec 2013 Power line down
Property Use —
Street, other
05 Dec 2013 Outside rubbish fire, other
Property Use —
Residential street, road or residential driveway

View more

Properties Nearby

Street AddressResidens/Landlords
350 21 Ave, San Francisco, CA 94121-2104
Apartment
  • 2 beds
  • 2 baths
  • 1,508 sqft
  • Built in 1905
Connie Lynn Acosta, David N Bariski
Maritsa Gonzalez, Della Lee
635 21 Ave, San Francisco, CA 94121-3807
Single Family
  • 2 beds
  • 1 bath
  • 1,860 sqft
  • Built in 1917
Kit Yee Tang
708 21 Ave, San Francisco, CA 94121-3810
Single Family
  • 2 beds
  • 1 bath
  • 1,106 sqft
  • Built in 1920
Erlinda T Ludovico, Son N Ma
1477 21 Ave, San Francisco, CA 94122-3329
Single Family
  • 1 bath
  • 1,500 sqft
  • Built in 1925
Ann Aghakan, John Aghakan
1631 21 Ave, San Francisco, CA 94122-3333
Single Family Residential
  • 2 beds
  • 1 bath
  • Lot: 3,000 sqft
  • Built in 1927
Gavin Fong, Gladys F Fong
1726 21 Ave, San Francisco, CA 94122-4416
Single Family Residential
  • 2 beds
  • 2 baths
  • Lot: 2,979 sqft
  • Built in 1950
Ruth Omalley, Ronald J Tortorelli
1825 21 Ave, San Francisco, CA 94122-4417
Single Family
  • 2 beds
  • 2 baths
  • 1,785 sqft
  • Built in 1931
Amy S Ng, Wilbert W Ng
 

FAQ about the house at 643 21 Ave, San Francisco, CA


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