| 123 Garage Door | Ming Fang | — | (510) 604 8640 | GC, remodel, ADU | Castro Valley · Alameda County | — | — |
| 123 Remodeling Ca INC | David Lavi | dreamsrenovationca@gmail.com | (858) 240 1123 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| 126 Builders INC | Ricardo Antonio Lizarraga | — | (951) 232 0361 | GC, remodel, ADU | Walnut · Los Angeles County | — | — |
| 126 New Construction INC | Behroz Sarange | — | (818) 516 3843 | GC, remodel, ADU | Calabasas · Los Angeles County | — | — |
| 1271 Construction INC | Kurt Wesley Pohlenz | — | (661) 330 5878 | GC, remodel, ADU | Bakersfield · Kern County | — | — |
| 1320 Construction INC | Matthew Blake Tarry | — | (805) 416 4116 | GC, remodel, ADU | Chatsworth · Los Angeles County | — | — |
| 1320 Electric | Juan Jose Corona | — | (951) 642 8393 | Electricians | Riverside · Riverside County | — | — |
| 1320 Plumbing INC | Henry B Penate | — | (818) 401 7997 | Other | Pacoima · Los Angeles County | — | — |
| 1345 Construction | Jose Angel Arrieta | — | (213) 926 7429 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| 138 Communications INC | Matthew George Schrum | — | (303) 378 1145 | Other | Upland · San Bernardino County | — | — |
| 13zero3 Construction | Gaetano Gino Giacalone | eben@eyebytes.com | (619) 731 4242 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| 1503 Electric INC | Jesus Cirigo Morin | — | (714) 200 9107 | Electricians | Tustin · Orange County | — | — |
| 152 Concrete Concepts INC | Rene Villalobos | — | (209) 639 8050 | Other | Los Banos · Merced County | — | — |
| 153 Cornerstone Construction INC | Il-Lae Cho | gwebb@cornerstone-construction.com | (832) 259-2520 | Electricians | Fremont · Alameda County | — | — |
| 161 Construction INC | Vitaliy Ivanovich Mikhov | — | (916) 205 0275 | GC, remodel, ADU | North Highlands · Sacramento County | — | — |
| 168 Construction And Remodeling | Eric Zhao | — | (626) 284 6682 | GC, remodel, ADU | Alhambra · Los Angeles County | — | — |
| 168adu Construction | Pu Johnny | — | (626) 949 0403 | GC, remodel, ADU | City Of Industry · Los Angeles County | — | — |
| 168cad Construction INC | Gao Peng | — | (626) 777 7757 | GC, remodel, ADU | Yorba Linda · Orange County | — | — |
| 17 Mile Construction Services INC | Mauricio Perez-Santos | — | (831) 620 2301 | GC, remodel, ADU | Creston · San Luis Obispo County | — | — |
| 17 Paradigm INC | Edgar Ayala | — | (562) 983 8811 | GC, remodel, ADU | Long Beach · Los Angeles County | — | — |
| 1776 Built INC | Robert Michael Troiano | — | (747) 488 1776 | GC, remodel, ADU | Tarzana · Los Angeles County | — | — |
| 1776 Construction | Gregory Allen Atkins | — | (530) 417 3717 | GC, remodel, ADU | Somerset · El Dorado County | — | — |
| 1776 Construction | Daniel Jacob Ferchaud | — | (530) 362 0944 | GC, remodel, ADU | Marysville · Yuba County | — | — |
| 1776 Roofing Solutions LLC | Benjamin Paul Bickford | — | (805) 887 3639 | Other roofers | Atascadero · San Luis Obispo County | — | — |
| 18 Remodel INC | Stephen Francis Killilea | — | (818) 744 9251 | GC, remodel, ADU | Reseda · Los Angeles County | — | — |
| 18 Remodeling Group INC | Peer Roee | — | (818) 339 7573 | GC, remodel, ADU | Woodland Hills · Los Angeles County | — | — |
| 180 Construction Group INC | Michael Imani | — | (310) 497 2180 | GC, remodel, ADU | Tarzana · Los Angeles County | — | — |
| 180 Roofing Pros | Kenneth Edward Walter | — | (760) 264 4003 | Other roofers | Escondido · San Diego County | — | — |
| 1800 Anytime Plumbing Heating & Air | Geno Anthony Gruber | — | (800) 269 8463 | HVAC | Coronado · San Diego County | — | — |
| 1800 Construction INC | Golan Yigael Cohen | — | (310) 220 1954 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| 182 Construction | Aldous Gatmaitan Simpao | — | (818) 237 7489 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| 18th St Finish Carpentry | 18th St Finish Carpentry | — | (310) 570 9080 | Other | Oxnard · Ventura County | — | — |
| 1902 Productions INC DBA Ab Construction | Andrew Craig Brown | — | (530) 598 5175 | GC, remodel, ADU | Etna · Siskiyou County | — | — |
| 1904 Construction | Reid Michael Schneider | — | (619) 550 6384 | GC, remodel, ADU | Lakeside · San Diego County | — | — |
| 1904 Garage Doors & Gates INC | Alexander Joseph Johnson | info@garagedoorsgates.com | (619) 962 1564 | Other | San Diego · San Diego County | — | — |
| 1904 Glazing INC | Oscar Efren Verduzco Casillas | — | (619) 915 1931 | Windows, patio, painters | Chula Vista · San Diego County | — | — |
| 19346 Painting | 19346 Painting | — | (714) 331 8790 | Windows, patio, painters | Los Angeles · Los Angeles County | — | — |
| 1977 Construction INC | Jose Gutierrez-Arriaga | — | (818) 900 5278 | Other roofers | Studio City · Los Angeles County | — | — |
| 1979 Roofing INC | Juan Carlos Martinez Alvarez | — | (657) 859 0930 | Other roofers | Orange · Orange County | — | — |
| 1980 Co LLC | Patrick Paygar Jr Boyd | — | (818) 489 6403 | Electricians | Monrovia · Los Angeles County | — | — |