| +nvioronics INC DBA W B Schulte Construction | Christopher Solon Garrett | — | (818) 266 8440 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| 0303 Construction INC | Juan Manuel Ortega | — | (650) 452 2720 | GC, remodel, ADU | Pacifica · San Mateo County | — | — |
| 04pan Nogada | 04pan Nogada | — | (310) 494 1636 | GC, remodel, ADU | Pasadena · Los Angeles County | — | — |
| 1 - 888 - 4 - Abatement INC | Neil Dalton Ostrander | — | (916) 231 0090 | GC, remodel, ADU | Rancho Cordova · Sacramento County | — | — |
| 1 A Construction | Kalenyuk Vadim | — | (530) 503 7804 | GC, remodel, ADU | Rancho Cordova · Sacramento County | — | — |
| 1 Call Flood & Construction Specialist LLC | Shawn Bush | — | (619) 954 5162 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| 1 Day Kitchen Bath & Tile Construction Corporation | Pejman Tanaeim | — | (310) 370 0282 | GC, remodel, ADU | Lawndale · Los Angeles County | — | — |
| 1 Design Construction Corp | Min Kyung Ho | — | (213) 384 0011 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| 1 Dream Home Renovations | Ibarra Rafael Trujillo | dreamhomerenovations@myyahoo.com | (865) 661-1531 | GC, remodel, ADU | San Bernardino · San Bernardino County | — | — |
| 1 Master's Shop Construction INC | Aguayo Mario Escobedo | — | (818) 523 3884 | GC, remodel, ADU | Agoura Hills · Los Angeles County | — | — |
| 1 N 7 General Construction | Zhong Jinfan | — | (415) 370 9822 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| 1 Nation Construction INC | Robert Anthony Shea | — | (209) 406 4632 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| 1 Oak Remodeling | Joshua Navid Keshmir | — | (877) 448 1625 | GC, remodel, ADU | Encino · Los Angeles County | — | — |
| 1 Of A Kine Wood Construction | Goodman Jason | — | (530) 638 6954 | GC, remodel, ADU | Cottonwood · Shasta County | — | — |
| 1 Original Construction INC | George Vladimir Troosh | interested@domainmarket.com | (415) 420 5509 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| 1 Smart Build INC | Isaac Sade | — | (866) 419 8840 | GC, remodel, ADU | Woodland Hills · Los Angeles County | — | — |
| 1 Solorio INC | Solorio Alex | — | (714) 578 4709 | GC, remodel, ADU | Orange · Orange County | — | — |
| 1 St California Construction INC | Zamani Alireza | — | (626) 533 5673 | GC, remodel, ADU | Pasadena · Los Angeles County | — | — |
| 1 St Choice Energy Builders INC | Maor Tziun Knafo | — | (818) 277 0514 | GC, remodel, ADU | Tarzana · Los Angeles County | — | — |
| 1 St Choice Restoration LLC | Allen Danilof | — | (818) 912 3232 | GC, remodel, ADU | Porter Ranch · Los Angeles County | — | — |
| 1 Step By Step Construction | Tony D'arcy Muir | — | (925) 597 4648 | GC, remodel, ADU | Vallejo · Solano County | — | — |
| 1 Stop Builders | Rahlin Yaaqov | — | (877) 220 5575 | GC, remodel, ADU | Mission Hills · Los Angeles County | — | — |
| 1 Stop Building Construction | Angel Villegas Gonzalez | — | (562) 318 7515 | GC, remodel, ADU | Long Beach · Los Angeles County | — | — |
| 1 Stop Kitchen & Bath LLC | Mike Amin Arid | — | (818) 708 7777 | GC, remodel, ADU | Reseda · Los Angeles County | — | — |
| 1 Up Construction INC | Roger Arlen Mills | — | (925) 503 7024 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| 1+ | Kenneth William Akiyoshi | — | (323) 316 4812 | GC, remodel, ADU | Monterey Park · Los Angeles County | — | — |
| 1-800 Water Damage Of West San Jose And Sunnvale | Bahram Nosrati Shamlou | — | (408) 859 5559 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| 10 Points Construction INC | Oscar Isaias Panameno | — | (310) 261 0063 | GC, remodel, ADU | Bellflower · Los Angeles County | — | — |
| 10 Star Development Group INC | Rudy Anthony Lopez | — | (669) 900 3946 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| 101 Builders INC | Antoinette Rose Schreder | — | (408) 842 3355 | GC, remodel, ADU | Gilroy · Santa Clara County | — | — |
| 101 Group Remodeling | Andrei Koshtur | — | (347) 410 2830 | GC, remodel, ADU | Encino · Los Angeles County | — | — |
| 101 Hauling Corp | Sanchez Christopher | — | (707) 500 2100 | GC, remodel, ADU | Rohnert Park · Sonoma County | — | — |
| 101 Home Builders INC | James David Sansom | — | (818) 266 4211 | GC, remodel, ADU | Van Nuys · Los Angeles County | — | — |
| 101 Mobility | Raul Emmanuel Navarro | — | (650) 614 1533 | GC, remodel, ADU | Burlingame · San Mateo County | — | — |
| 101 Mobility Of San Diego | Todd Robert Girouard | — | (858) 800 2820 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| 101 Remodeling | Jian Quan Li | — | (916) 648 1388 | GC, remodel, ADU | Sacramento · Sacramento County | — | — |
| 101 West Coast INC | Glenn Howard Stern | — | (818) 613 8567 | GC, remodel, ADU | Encino · Los Angeles County | — | — |
| 1015 Construction | Arthur Charles Mansir | — | (760) 415 4245 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| 10square Construction INC | Patrick Bai Lam | — | (510) 501 1827 | GC, remodel, ADU | Berkeley · Alameda County | — | — |
| 10ten Construction LLC | Jessica Marie Gilmour | — | (760) 712 7840 | GC, remodel, ADU | Fallbrook · San Diego County | — | — |