| E Ponce & Sons | E Ponce & Sons | — | (707) 312 1083 | Other | Napa · Napa County | — | — |
| E.l. General Contractor INC | Chavez Eduardo Lopez | — | (707) 363 0393 | GC, remodel, ADU | Napa · Napa County | — | — |
| Eagle Heating & Air Conditioning | Eagle Heating & Air Conditioning | — | (707) 738 6196 | HVAC | Napa · Napa County | — | — |
| Eagle Valley Plumbing INC | Erina Idrizi | — | (347) 658 0570 | Other | Napa · Napa County | — | — |
| Eakle Trucking & Construction | Samuel Richard Eakle | — | (707) 965 3610 | Other | Pope Valley · Napa County | — | — |
| Earthscapes | Lisa Ann Hirsch | — | (415) 497 4622 | Windows, patio, painters | Napa · Napa County | — | — |
| Ebenoit Home Improvement | Ebenoit Home Improvement | — | (415) 328 4677 | GC, remodel, ADU | American Canyon · Napa County | — | — |
| Ebersole Construction | Steven Arthur Ebersole | — | (707) 337 4091 | GC, remodel, ADU | St Helena · Napa County | — | — |
| Eca Professional Lath & Plastering Corporation | Ernesto Castillo Arroyo | — | (707) 287 2333 | Other | Napa · Napa County | — | — |
| Eco Plumbing | Debbie Marie Geiler | — | (707) 637 7238 | Other | Napa · Napa County | — | — |
| Ecologic Painting | Ecologic Painting | — | (707) 304 2127 | Windows, patio, painters | Napa · Napa County | — | — |
| Ed's Plumbing & Repairs / Construction | Darren Lee Campainha | — | (707) 224 9031 | GC, remodel, ADU | Napa · Napa County | — | — |
| Eierman Design & Consulting INC | Colby-James Nicholas Eierman | — | (510) 407 1346 | Windows, patio, painters | Napa · Napa County | — | — |
| Elie Karch | Elie Karch | — | (650) 280 6944 | GC, remodel, ADU | Napa · Napa County | — | — |
| Elite Dream Pools | Elite Dream Pools | — | (707) 805 6135 | Pool | St Helena · Napa County | — | — |
| Elite Window And Shower Door LLC DBA Decor Shower Door And Glass | Jeremy Wayne Jones | — | (707) 253 0622 | Windows, patio, painters | Napa · Napa County | — | — |
| Ellis Landscaping Co | Adam Jacob Ellis | — | (707) 287 7130 | Windows, patio, painters | Napa · Napa County | — | — |
| Ellis Lighting And Power | Ellis Lighting And Power | — | (707) 227 7020 | Electricians | Napa · Napa County | — | — |
| Empire Painting Contractors INC | Bruce Carvel Davies | — | (707) 257 2408 | Windows, patio, painters | Napa · Napa County | — | — |
| Emtu Construction INC | Justin James Metcalfe | — | (707) 254 5706 | GC, remodel, ADU | Napa · Napa County | — | — |
| Epi Plumbing | Epi Plumbing | — | (707) 286 9753 | Other | Napa · Napa County | — | — |
| Eric Kenneth Martinez | Eric Kenneth Martinez | — | (707) 392 9746 | Windows, patio, painters | Angwin · Napa County | — | — |
| Eric Phillips Construction Company | Eric Edward Phillips | — | (707) 975 3079 | GC, remodel, ADU | American Canyon · Napa County | — | — |
| Eric Watts Plastering | Eric Watts Plastering | — | (707) 552 0576 | Other | American Canyon · Napa County | — | — |
| Erik De Laat Painting Contractor | Erik De Laat Painting Contractor | — | (707) 235 3534 | Windows, patio, painters | Napa · Napa County | — | — |
| Ethan Ellis Construction | Ethan Barnaby Ellis | — | (510) 610 4839 | GC, remodel, ADU | American Canyon · Napa County | — | — |
| Ez Electric INC | Ezequiel Corona | info@ezelectric.com | (209) 601 0735 | Electricians | Napa · Napa County | — | — |
| F C B Construction DBA F C B Engineering | Thomas Arthur Johnston | — | (707) 963 6110 | Other | Rutherford · Napa County | — | — |
| Fallin Machinery Repair | Fallin Machinery Repair | — | (707) 477 2766 | Other | Angwin · Napa County | — | — |
| Family Roofing By Van Ronk INC | John Charles Van Ronk | — | (707) 252 6025 | Other roofers | Napa · Napa County | — | — |
| Farris Construction INC | Daniel Leroy Farris | — | (707) 942 0175 | GC, remodel, ADU | Calistoga · Napa County | — | — |
| Fast Framing Construction | Edi A Morales Lopez | — | (707) 681 4340 | GC, remodel, ADU | Napa · Napa County | — | — |
| Fastsigns American Canyon | Jason Zachery Moline | — | (415) 552 0110 | Other | American Canyon · Napa County | — | — |
| Fenian's Finishes | Fenian's Finishes | — | (707) 287 1367 | Windows, patio, painters | St Helena · Napa County | — | — |
| Fennen Construction | Fennen Christopher Brian | — | (707) 953 3680 | GC, remodel, ADU | Calistoga · Napa County | — | — |
| Fifth Sun Electric LLC | Oscar Eduardo Rivera | fifthsunelectric@gmail.com | (707) 804 6655 | Electricians | Napa · Napa County | — | — |
| Figueroa Landscaping | Figueroa Landscaping | astigma@astigmatic.com | (707) 294 5467 | Windows, patio, painters | Napa · Napa County | — | — |
| Final Step Floor Company | Christien Joseph Slack | — | (707) 294 9457 | Other | Napa · Napa County | — | — |
| First & Main Property Management | First & Main Property Management | info@firstandmainpm.com | (707) 207-8100 | Property managers | Napa · Napa County | — | — |
| Five Star Construction | Victor Manual Rodriguez | — | (707) 812 3723 | GC, remodel, ADU | Napa · Napa County | — | — |