Business location
Black Serum
This listing describes a business location. Location dates are not company formation dates.
Record reference date: October 18, 2026. Details may be incomplete or outdated.
- Record type
- Business location
- Record identifier
- 1327865-03-231-1140039
- Status
- No End Date Reported
- City
- San Francisco
- State or territory
- California
- Address
- 310 Valencia St
- Postal code
- 94103
- Location start
- March 17, 2023
- Location identifier
- 1327865-03-231-1140039
- Ownership name (as reported)
- Kai Muan-Lynn Chao
- DBA name
- Black Serum
Names and reported roles
Roles are shown as reported. Agents, officers and principals are not automatically owners.
Business names
- DBA name
- Black Serum
Ownership names (as reported)
- Ownership name (as reported)
- Kai Muan-Lynn Chao
Download business record (JSON)
Directory details
Identifiers
- Business Account
- 1140039
- Location
- 1327865-03-231
Names
- Ownership As Reported
- Kai Muan-Lynn Chao
- Dba
- Black Serum
Addresses
- Business · Text
- 310 Valencia St
- Business · City
- San Francisco
- Business · Region
- CA
- Business · Postal Code
- 94103
- Mailing · Street 1
- 1187 Santa Lucia Dr
- Mailing · City
- Pittsburg
- Mailing · Region
- CA
- Mailing · Postal Code
- 94565
Dates
- Business Start
- 2022-10-04
- Location Start
- 2023-03-17
Taxes
- Parking Tax Reported
- No
- Transient Occupancy Tax Reported
- No
Geography
- Reported Point
- {"longitude":-122.4224955,"latitude":37.767861}
- Supervisor District
- 9
- Neighborhood
- Mission
All reported fields
Other reported details
- Uniqueid
- 1327865-03-231-1140039
- Certificate number
- 1140039
- Ttxid
- 1327865-03-231
- Dba start date
- 10/04/2022
- Parking tax
- false
- Transient occupancy tax
- false
- Supervisor district
- 9
- Neighborhoods analysis boundaries
- Mission
- Data as of
- 2026/10/18 12:00:00 AM
- Data loaded at
- 2026/10/18 04:12:51 AM
- Current Supervisor Districts
- 5
- Analysis Neighborhoods
- 20
- Neighborhoods
- 37
- SF Find Neighborhoods
- 37
- Current Police Districts
- 3
Names and reported roles
- Ownership name (as reported)
- Kai Muan-Lynn Chao
- Dba name
- Black Serum
Addresses and locations
- Full business address
- 310 Valencia St
- City
- San Francisco
- State
- CA
- Business zip
- 94103
- Location start date
- 03/17/2023
- Location
- POINT (-122.4224955 37.767861)
Mailing information
- Mailing address 1
- 1187 Santa Lucia Dr
- Mail city
- Pittsburg
- Mail state
- CA
- Mail zipcode
- 94565