| 1902 Productions INC DBA Ab Construction | Andrew Craig Brown | — | (530) 598 5175 | GC, remodel, ADU | Etna · Siskiyou County | — | — |
| 6 Point Construction | Richard Allen Evans | — | (530) 643 0891 | GC, remodel, ADU | Yreka · Siskiyou County | — | — |
| A D O'bannon Builder | A D O'bannon Builder | adobuilder@gmail.com | (707) 322 2372 | GC, remodel, ADU | Mt Shasta · Siskiyou County | — | — |
| Allen B Headley | Allen B Headley | — | (951) 751 1339 | GC, remodel, ADU | Weed · Siskiyou County | — | — |
| Alpine C S W Construction | Kenneth Alan Roseberry | — | (530) 863 0520 | GC, remodel, ADU | Mt Shasta · Siskiyou County | — | — |
| Apar Custom Building | Apar Custom Building | — | (310) 529 1826 | GC, remodel, ADU | Dunsmuir · Siskiyou County | — | — |
| Awm Construction INC | Adam Wesley Mc Williams | awmconstruction@msn.com | (530) 938 9677 | GC, remodel, ADU | Weed · Siskiyou County | — | — |
| B K Construction | Brian Kenneth Kische | — | (530) 842 5221 | GC, remodel, ADU | Yreka · Siskiyou County | — | — |
| B M Construction & Frame Work | Breton Albion Mc Intyre | — | (530) 859 3773 | GC, remodel, ADU | Weed · Siskiyou County | — | — |
| B N G Finish Products INC | Brian Douglas Eastlick | — | (530) 925 9767 | GC, remodel, ADU | Etna · Siskiyou County | — | — |
| Barn Builders Plus | Barn Builders Plus | — | (530) 598 1976 | GC, remodel, ADU | Yreka · Siskiyou County | — | — |
| Beaver Valley Construction | William Paul Freckman | — | (530) 598 2000 | GC, remodel, ADU | Fort Jones · Siskiyou County | — | — |
| Benjamin Ceraso Construction | Benjamin Alexander Ceraso | — | (530) 643 3543 | GC, remodel, ADU | Yreka · Siskiyou County | — | — |
| Berryhill Builders | Berryhill Builders | — | (530) 340 2324 | GC, remodel, ADU | Greenview · Siskiyou County | — | — |
| Better Homes + Construction INC | Scott Anthony Dolf | — | (530) 925 6827 | GC, remodel, ADU | Dunsmuir · Siskiyou County | — | — |
| Big Dave's Construction INC | David Ralph Keisler | — | (530) 925 9365 | GC, remodel, ADU | Dunsmuir · Siskiyou County | — | — |
| Boyd Construction Company | Edward Mccormick Boyd | — | (541) 551 0197 | GC, remodel, ADU | Weed · Siskiyou County | — | — |
| Brad De Bortoli | Brad De Bortoli | — | (530) 261 1465 | GC, remodel, ADU | Mt Shasta · Siskiyou County | — | — |
| Brian The House Doctor | Brian The House Doctor | — | (530) 859 0357 | GC, remodel, ADU | Weed · Siskiyou County | — | — |
| Buchin Construction | John Forrest Buchin | — | (530) 784 3268 | GC, remodel, ADU | Fort Jones · Siskiyou County | — | — |
| Caddell Construction | Zachary Bernard Caddell | interested@domainmarket.com | (530) 340 2423 | GC, remodel, ADU | Mt Shasta · Siskiyou County | — | — |
| Callahan Home Improvements | Callahan Home Improvements | — | (530) 467 5821 | GC, remodel, ADU | Callahan · Siskiyou County | — | — |
| Cattanach Construction Company INC | Cameron John Cattanach | — | (530) 356 5230 | GC, remodel, ADU | Mount Shasta · Siskiyou County | — | — |
| Chavez Construction Company | Francisco Javier Chavez | — | (530) 643 1057 | GC, remodel, ADU | Montague · Siskiyou County | — | — |
| Chris Parker Construction Company | Christopher Bernard Parker | — | (530) 598 4769 | GC, remodel, ADU | Mt Shasta · Siskiyou County | — | — |
| Christopher Maniatis | Christopher Maniatis | — | (510) 326 4726 | GC, remodel, ADU | Mt Shasta · Siskiyou County | — | — |
| Clark Creek Construction | John Thomas Murray | — | (530) 598 6878 | GC, remodel, ADU | Etna · Siskiyou County | — | — |
| Clark Property Services | Robert Andrew Clark | — | (650) 504 0112 | GC, remodel, ADU | Mount Shasta · Siskiyou County | — | — |
| Clint Johnson Construction INC | Clint Joseph Johnson | — | (530) 598 5301 | GC, remodel, ADU | Callahan · Siskiyou County | — | — |
| Clyde Construction INC | Andrew James Clyde | — | (707) 206 2424 | GC, remodel, ADU | Mount Shasta · Siskiyou County | — | — |
| Cody Clure Construction INC | Cody Dean Clure | — | (530) 526 5436 | GC, remodel, ADU | Mt Shasta · Siskiyou County | — | — |
| Constructioneer Tony | Constructioneer Tony | — | (530) 598 4787 | GC, remodel, ADU | Yreka · Siskiyou County | — | — |
| Costner Construction | Grover Charles Costner | — | (541) 601 2922 | GC, remodel, ADU | Grenada · Siskiyou County | — | — |
| D P Construction | David Warren Peterson | — | (530) 859 1355 | GC, remodel, ADU | Weed · Siskiyou County | — | — |
| Dave Camp Construction | David Bernard Camp | — | (530) 964 2267 | GC, remodel, ADU | Mc Cloud · Siskiyou County | — | — |
| De Vine Construction | Deanna Lynn Hoppin | — | (530) 925 9952 | GC, remodel, ADU | Weed · Siskiyou County | — | — |
| Derick Girven Construction | Derick Richard Girven | — | (530) 598 5150 | GC, remodel, ADU | Etna · Siskiyou County | — | — |
| Derrik Bennett Construction | Derrik William Bennett | — | (530) 340 2116 | GC, remodel, ADU | Yreka · Siskiyou County | — | — |
| Dickinson Builders INC | Kenneth Wade Dickinson | — | (530) 467 4120 | GC, remodel, ADU | Etna · Siskiyou County | — | — |
| Dolf Construction | Scott Anthony Dolf | — | (530) 925 0313 | GC, remodel, ADU | Mt Shasta · Siskiyou County | — | — |