| Armour Plumbing Co | Abraham Cortes Cervantes | — | (310) 469 1101 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Arnold Fields INC DBA Arnold Fields Painting | Arnold Benson Fields | — | (951) 377 1633 | Windows, patio, painters | Rancho Cucamonga · San Bernardino County | — | — |
| Arnold H Stubblefield | Arnold H Stubblefield | — | (909) 864 1522 | GC, remodel, ADU | Highland · San Bernardino County | — | — |
| Arod Electric INC | Armando Reyes Rodriguez | — | (909) 743 3377 | Electricians | Fontana · San Bernardino County | — | — |
| Arrieta Landscape INC | Jose Felix Arrieta Angeles | — | (909) 843 2887 | Windows, patio, painters | San Bernardino · San Bernardino County | — | — |
| Arrow Builders Group INC | Wassim Issam Fadlallah | — | (310) 678 1005 | GC, remodel, ADU | Montclair · San Bernardino County | — | — |
| Arrow Building & Maintenance | Arrow Building & Maintenance | — | (760) 947 5296 | GC, remodel, ADU | Hesperia · San Bernardino County | — | — |
| Arrow Network INC | Wassim Issam Fadlallah | support@arrownetwork.com | (909) 293 9340 | Other | Montclair · San Bernardino County | — | — |
| Arrow Plumbing | Arrow Plumbing | — | (909) 226 1616 | Other | Redlands · San Bernardino County | — | — |
| Arrow Restaurant Equipment & Supplies INC | Katie Elizabeth Serrao | — | (909) 621 7428 | Electricians | Montclair · San Bernardino County | — | — |
| Arrowhead Air INC | Logan Alexander Brown | bids@arrowheadair.com | (909) 556 6995 | HVAC | Twin Peaks · San Bernardino County | — | — |
| Arrowhead Building Company INC | Kory Karis Avarell | — | (909) 644 8009 | GC, remodel, ADU | Lake Arrowhead · San Bernardino County | — | — |
| Arrowhead Contracting INC | Gonzalez Roberto Arce | — | (909) 485 0644 | GC, remodel, ADU | Cedar Glen · San Bernardino County | — | — |
| Arrowhead Craft Builders INC | Scott Thomas Craft | — | (909) 967 0608 | GC, remodel, ADU | Lake Arrowhead · San Bernardino County | — | — |
| Arrowhead Docks INC | Aaron Blake Osekowsky | — | (951) 316 7476 | Other | Cedar Glen · San Bernardino County | — | — |
| Arrowhead Door Company | James Christian Rutherford | — | (909) 336 3667 | Other | Skyforest · San Bernardino County | — | — |
| Arrowhead Engineering | Arrowhead Engineering | — | (909) 453 9999 | Other | Cedar Glen · San Bernardino County | — | — |
| Arrowhead Fence INC DBA Uc Fence | Jason Michael Valenzuela | — | (909) 889 4800 | Other | San Bernardino · San Bernardino County | — | — |
| Arrowhead Floor & Window Coverings | Juan Gabriel Alvarado | — | (909) 337 5178 | Other | Twin Peaks · San Bernardino County | — | — |
| Arrowhead Group INC | Steven Richard Landrus | info@arrowheadintermediaries.com | (909) 881 0898 | Other | San Bernardino · San Bernardino County | — | — |
| Arrowhead Ironworks | Arrowhead Ironworks | — | (951) 675 6181 | Other | Cedar Glen · San Bernardino County | — | — |
| Arrowhead Landscape | Arrowhead Landscape | — | (909) 648 4189 | Windows, patio, painters | Lake Arrowhead · San Bernardino County | — | — |
| Arrowhead Painting | Arrowhead Painting | — | (909) 520 9246 | Windows, patio, painters | Blue Jay · San Bernardino County | — | — |
| Arrowhead Plumbing INC | Robert Randall Gardner | — | (949) 283 2365 | Other | Blue Jay · San Bernardino County | — | — |
| Arrowhead Pool Service & Repair INC | Jeffery Craig Judy | — | (909) 362 5890 | Pool | Highland · San Bernardino County | — | — |
| Arrowhead Steel | Davis Hudson Hopper | — | (909) 877 1610 | Other | Bloomington · San Bernardino County | — | — |
| Arrowhead Tile And Stone | Keith Darryl Paxton | — | (951) 505 1294 | Other | Lake Arrowhead · San Bernardino County | — | — |
| Arrowwoods Works INC | Kelley Allyson Keen Boldig | — | (909) 476 9288 | GC, remodel, ADU | Rancho Cucamonga · San Bernardino County | — | — |
| Art Again | Art Again | — | (909) 437 3078 | GC, remodel, ADU | Chino Hills · San Bernardino County | — | — |
| Art Electrical Construction | Diaz Arturo Damian | — | (714) 787 8472 | Electricians | Fontana · San Bernardino County | — | — |
| Art Of Air INC | Ryan Frederick Smith | — | (760) 998 6892 | HVAC | Phelan · San Bernardino County | — | — |
| Art Orendain Electric | Jesus Arturo Orendain | — | (909) 565 3311 | Electricians | Fontana · San Bernardino County | — | — |
| Art Specialties INC | Timothy William Edmonson | — | (909) 987 3355 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Art's Fire Protection | Carlos Arteaga | — | (909) 676 1117 | Other | Victorville · San Bernardino County | — | — |
| Art's Painting | Art's Painting | — | (909) 913 2271 | Windows, patio, painters | Big Bear City · San Bernardino County | — | — |
| Artifex Plumbing & Pipeline LLC | Fernando Jr Ruiz | — | (909) 631 7467 | Other | Chino · San Bernardino County | — | — |
| Artifex Plumbing Systems Group INC | Nicholas Edward Farmer | — | (909) 213 2490 | Other | Grand Terrace · San Bernardino County | — | — |
| Artificial Grass Solution INC | Luanchong He | — | (909) 870 6149 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Artificial Turf Works | Christopher James Feicht | — | (949) 439 0177 | Other | Highland · San Bernardino County | — | — |
| Artisan Construction | Manuel James Sloan | — | (909) 919 0456 | GC, remodel, ADU | Ontario · San Bernardino County | — | — |