| Address | Sq. Ft | Location | Contact Phone | Contact Name |
| 1015 First St | n/a | office above Bank of The West | 925-372-8106 | Tim |
| 920 First St | n/a | office above Olson Real Estate | 707-745-3602 | Kathleen |
| 919 First St | n/a | office above jewelry store | 707-386-7641 | |
| 909 First St | 1400 sq. f.t | above Venticello's | 925-209-5558 | Gust |
| 831First St. | n/a | Upstairs | 707-745-0924 | Estey RE |
| 634A First St. | 900 Sq. Ft | above Piccolo | 707-748-1660 | Marcus |
| 634B First St | 1000 Sq. Ft. | above Piccolo | 707-748-1660 | Marcus |
| 623 First St | 123 Sq Ft | former spoonful of sugar | n/a | Pam Dixon |
| 110 East D Ste N | n/a | Treasury of Commons Bldg | 707-332-8301 | Alex |
| 521 First St | n/a | n/a | 707-252-1400 | George |
| 191 East H St | n/a | Powerhouse Bldg | 707-373-7510 | Marian |
| First & West D St. | n/a | by Iron Horse | 707-386-7641 | Tina |
| 333 First St | n/a | Washington House bldg | 707-252-1400 | George |
| 221 First St | n/a | under construction | 707-745-5000 | Steve |
| 216 First St | 2367 Sq Ft | lease or purchase | 925-974-0100 | Keith |
| 232 First St | n/a | n/a | 707-224-8454 | Michael |
| 242 First St | n/a | n/a | 707-224-8454 | Michael |
| 100 First St | n/a | Tannery Bldg | 925-947-0200 | James |
| 639 First St | n/a | Business for sale | 707-745-2777 | Paul |