| Enre Construction LLC | Shawn Lee Sr Drinnon | — | (707) 530 1332 | GC, remodel, ADU | Kelseyville · Lake County | — | — |
| Epidendio Construction INC | Michael Anthony Epidendio | — | (707) 994 5100 | GC, remodel, ADU | Lower Lake · Lake County | — | — |
| Eric Davis Builder | Eric Davis Builder | — | (707) 245 7599 | GC, remodel, ADU | Lakeport · Lake County | — | — |
| Ernest Fischer Construction | Ernest Raymond Fischer | — | (707) 355 1089 | GC, remodel, ADU | Middletown · Lake County | — | — |
| Essential Vegetation Management Services LLC | Daniel Clair Bley | — | (713) 499 0118 | Tree | Lakeport · Lake County | — | — |
| Ethan Rose | Ethan Rose | — | (707) 590 8927 | GC, remodel, ADU | Glenhaven · Lake County | — | — |
| Everardo Chavez Pina | Everardo Chavez Pina | — | (707) 461 4105 | GC, remodel, ADU | Clearlake · Lake County | — | — |
| Expert Electric | John Charles Blythe | info@expert-elektrik.ru | (415) 435 8686 | Electricians | Middletown · Lake County | — | — |
| Extreme Terrain Solutions | Extreme Terrain Solutions | — | (707) 738 3088 | Other | Kelseyville · Lake County | — | — |
| Eyeball Construction | Raymond David Snider | — | (707) 349 0813 | GC, remodel, ADU | Upper Lake · Lake County | — | — |
| Fahrenheit Heating And Air Conditioning | Fahrenheit Heating And Air Conditioning | — | (707) 295 0399 | HVAC | Clearlake · Lake County | — | — |
| Fehrn Electric | Brian Joseph Fehrn | — | (707) 472 7166 | Electricians | Clearlake Oaks · Lake County | — | — |
| Finish Line Construction | Steven Kelly Williams | service@finishlineconstruction.com | (707) 477 7520 | GC, remodel, ADU | Hidden Valley Lake · Lake County | — | — |
| Flying Hammer Structural Steel Fabrication | Kevin Matthew Thompson | — | (707) 479 6088 | Other | Hidden Valley Lake · Lake County | — | — |
| Fossa's Backhoe Service INC | Daniel Fredrick Fossa | — | (707) 279 4423 | Other | Kelseyville · Lake County | — | — |
| Frontier Construction Co | Mark Joseph Komada | — | (707) 245 3133 | GC, remodel, ADU | Lakeport · Lake County | — | — |
| Frontier Farm And Landscape Co | Kecia Serena Stickney | — | (707) 355 1001 | Windows, patio, painters | Lower Lake · Lake County | — | — |
| Furia Construction INC | Kimberly June Furia | — | (707) 431 7405 | GC, remodel, ADU | Kelseyville · Lake County | — | — |
| Gabe Riley Construction | Gabriel Callin Riley | — | (707) 850 6576 | GC, remodel, ADU | Hidden Valley Lake · Lake County | — | — |
| Garcia Framing INC | Garcia Carrillo Jesus | support@garciaframing.com | (707) 295 6476 | GC, remodel, ADU | Middletown · Lake County | — | — |
| Gardens By Jillian | Gardens By Jillian | — | (707) 987 9706 | Windows, patio, painters | Hidden Valley Lake · Lake County | — | — |
| Gary R Milhaupt | Gary R Milhaupt | — | (707) 349 1220 | GC, remodel, ADU | Lakeport · Lake County | — | — |
| Garys Cabinet & Prehung Doors | Garys Cabinet & Prehung Doors | — | (707) 263 0182 | GC, remodel, ADU | Lakeport · Lake County | — | — |
| Gaytan Painting | Gaytan Painting | — | (707) 307 2141 | Windows, patio, painters | Hidden Valley Lake · Lake County | — | — |
| Gentry Tree Service | Brandon Leon Gentry | — | (707) 349 4339 | Tree | Nice · Lake County | — | — |
| George Gillies Construction | George Allen Gillies | — | (707) 624 6048 | GC, remodel, ADU | Middletown · Lake County | — | — |
| Gibney Construction | Timothy Philip Gibney | — | (707) 235 3507 | GC, remodel, ADU | Lakeport · Lake County | — | — |
| Gifford's Backhoe Services INC | Kenneth Herbert Gifford | — | (707) 928 5240 | Other | Cobb · Lake County | — | — |
| Glanzer Design & Build | Glanzer Design & Build | — | (707) 350 5950 | GC, remodel, ADU | Lower Lake · Lake County | — | — |
| Glen Rolfe Const | Glen Rolfe Const | — | (707) 349 2314 | GC, remodel, ADU | Lakeport · Lake County | — | — |
| Glenn Bridges | Glenn Bridges | — | (707) 349 0336 | GC, remodel, ADU | Kelseyville · Lake County | — | — |
| Golden Home Builders | Anthony Joseph Blyleven | — | (239) 200-2052 | GC, remodel, ADU | Kelseyville · Lake County | — | — |
| Golden Lake Construction | Golden Lake Construction | — | (909) 668-4316 | GC, remodel, ADU | Chino Hills · Lake County | — | — |
| Goodwin Construction & Excavation | Charles Raymond Goodwin | — | (707) 987 2714 | GC, remodel, ADU | Hidden Valley Lake · Lake County | — | — |
| Green Flash Pest Control | Green Flash Pest Control | — | (760) 334-4313 | Pest, tile roofs | Vista · Lake County | — | — |
| Green Light Electric | Paul Andrew Berglund | — | (707) 695 3899 | Electricians | Lakeport · Lake County | — | — |
| Green Tree Service | Norman Scott Green | — | (707) 321 8062 | Tree | Clearlake Oaks · Lake County | — | — |
| Greg Knowlton Construction | Gregory Lance Knowlton | — | (707) 495 5696 | GC, remodel, ADU | Clearlake · Lake County | — | — |
| Gsw Heating And Air | Gsw Heating And Air | — | (408) 665 0939 | HVAC | Nice · Lake County | — | — |
| Guillermo's Gutters | Guillermo's Gutters | — | (707) 342 3409 | Other | Lower Lake · Lake County | — | — |