| Altas Construction | Juan Carlos Sandoval | — | (916) 524 5112 | GC, remodel, ADU | Herald · Sacramento County | — | — |
| Aluminum Patio Cover Concepts | Fernando Jeovanny Ridel | — | (916) 880 6393 | Other | Citrus Heights · Sacramento County | — | — |
| Alvarado's INC | Roberto Adolph Alvarado | — | (916) 200 3911 | Electricians | Sacramento · Sacramento County | — | — |
| Alvarez Flooring | Alvarez Flooring | — | (916) 856 9235 | Other | Sacramento · Sacramento County | — | — |
| Always Affordable Plumbing & HVAC | Always Affordable Plumbing & HVAC | — | (916) 215 4514 | HVAC | Sacramento · Sacramento County | — | — |
| Always Clear Nichols Pool Services INC | Kenneth Patrick Nichols | — | (916) 220 3705 | Pool | Folsom · Sacramento County | — | — |
| Always Electrical | Michael Wayne Lorenz | — | (916) 631 8345 | Electricians | Rancho Cordova · Sacramento County | — | — |
| Am Electric Co | Murar Augustin | — | (916) 990 5211 | Electricians | Orangevale · Sacramento County | — | — |
| Am Plumbing & Fire INC | David John Arellano | — | (916) 996 4225 | Other | Antelope · Sacramento County | — | — |
| Am Welding | Am Welding | — | (916) 289 3321 | Other | Orangevale · Sacramento County | — | — |
| Amador Landscape Design | Jesse Saenz | — | (916) 524 1017 | Windows, patio, painters | Sacramento · Sacramento County | — | — |
| Amaral Construction | Ronald Arthur Amaral | — | (916) 201 8156 | GC, remodel, ADU | Folsom · Sacramento County | — | — |
| Amarteplus | Laudiceia Ferreira Rodrigues | contact@amarteplus.com | (916) 613 9728 | Other | Sacramento · Sacramento County | — | — |
| Amato Drywall | Amato Drywall | — | (916) 308 6993 | Other | Fair Oaks · Sacramento County | — | — |
| Amaya Construction | Martin Alexander Amaya | — | (707) 332 4565 | GC, remodel, ADU | Elk Grove · Sacramento County | — | — |
| Amaya Plumbing | Amaya Plumbing | — | (916) 439 3209 | Other | Sacramento · Sacramento County | — | — |
| Amazza Construction | Anthony Albert Mazza | — | (916) 960 9500 | GC, remodel, ADU | Rio Linda · Sacramento County | — | — |
| Ambient Air Solutions INC | Richard Daniel Baylis | — | (916) 544 8236 | HVAC | Sacramento · Sacramento County | — | — |
| Ambo Construction INC | Ambartsum Yuvikovich Tonyan | — | (916) 200 3976 | GC, remodel, ADU | Rancho Cordova · Sacramento County | — | — |
| Amc Fencing | Amc Fencing | — | (916) 272 4822 | Other | Sacramento · Sacramento County | — | — |
| Amdg Obagi Flooring INC | Luis Carlos Obagi | — | (916) 832 4025 | Other | Sacramento · Sacramento County | — | — |
| Ameliorate Plumbing | Ameliorate Plumbing | — | (916) 710 9189 | Other | Sacramento · Sacramento County | — | — |
| Amerasian Construction | Kitts Joseph Hausman | — | (916) 955 7198 | Electricians | Folsom · Sacramento County | — | — |
| America Advance Tech | America Advance Tech | — | (916) 203 9696 | HVAC | Sacramento · Sacramento County | — | — |
| America Insulation | America Insulation | — | (916) 740 9529 | Other | Sacramento · Sacramento County | — | — |
| America's Best Exteriors | America's Best Exteriors | — | (916) 519 6774 | GC, remodel, ADU | Orangevale · Sacramento County | — | — |
| America's Dream Homeworks | David Vladdy Chernioglo | — | (916) 826 0470 | Electricians | North Highlands · Sacramento County | — | — |
| America's Flooring INC | Chrystal Martinez | — | (661) 886 0468 | Other | Sacramento · Sacramento County | — | — |
| America's Home Solutions | Igor Shevchuk | — | (916) 990 6112 | GC, remodel, ADU | Antelope · Sacramento County | — | — |
| America's Plumbing Co INC | Bryan Eugene Hopkins | californiajoe500@gmail.com | (949) 379-0082 | Other | Sacramento · Sacramento County | — | — |
| America's Quality Roofing | America's Quality Roofing | aqrroofing@gmail.com | (916) 953-8820 | Other roofers | Sacramento · Sacramento County | — | — |
| America's Roofing Company | David Anthony Adams | — | (916) 481 7200 | Other roofers | Carmichael · Sacramento County | — | — |
| American Advanced Angle INC | Igor Bondar | — | (916) 799 7189 | GC, remodel, ADU | Antelope · Sacramento County | — | — |
| American Air Conditioning Co | Zhou Weiming | — | (916) 595 0951 | HVAC | Sacramento · Sacramento County | — | — |
| American Alfa Exterior | Konstantin Alexsandrovi Strilets | — | (916) 871 6680 | Other | Antelope · Sacramento County | — | — |
| American Building Development | Yarovenko Bohdan | — | (916) 969 7475 | GC, remodel, ADU | Sacramento · Sacramento County | — | — |
| American Buildings J&s | Ordonez Magaly Acevedo | americanbuildingsjs@yahoo.com | (530) 788 3256 | GC, remodel, ADU | Sacramento · Sacramento County | — | — |
| American Built Construction | Jonathan Bradley Boyd | — | (916) 738 9679 | GC, remodel, ADU | Rio Linda · Sacramento County | — | — |
| American Chiller Service INC | Kevin Edward Johnson | — | (916) 457 7800 | HVAC | Rancho Cordova · Sacramento County | — | — |
| American Comfort Life Construction | Aleck Dipon | — | (916) 841 6597 | GC, remodel, ADU | Sacramento · Sacramento County | — | — |