Cannabis microbusinesses in Contra Costa County, California
6 companies hold an active California microbusiness licence with premises in Contra Costa County.
ⓘ The 6 companies below are ordered by how long they have held a currently-active California licence, oldest first — a date off the register, not a score. No company here has been reviewed against the five criteria; three of those need documents only the supplier can provide.
| # | Company | Licensed since | Active licences | Type |
|---|---|---|---|---|
| 1 | Contra Costa Farms LLC | 2019 | 1 | Microbusiness |
| 2 | Isidore Technology Inc | 2021 | 1 | Microbusiness |
| 3 | Fiacre, Inc. | 2021 | 1 | Microbusiness |
| 4 | Kolaboration Ventures LLC | 2022 | 1 | Microbusiness |
| 5 | Kolaboration Concord LLC | 2022 | 1 | Microbusiness |
| 6 | Crane City Nursery LLC | 2023 | 1 | Microbusiness |
ⓘ Reproduced from the California DCC licence search, retrieved August 12, 2026.