| Apeco Engineering Contracting INC | Jalal Ibrahim Rahman | — | (760) 497 3795 | Other | Vista · San Diego County | — | — |
| Apex American Homes Corp | Timothy John Burkhardt | info@apexamericanhomes.com | (702) 712 6515 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Apex Constructors INC | Glen Francis Bullock | admin@apex-constructors.com | (760) 471 6842 | GC, remodel, ADU | San Marcos · San Diego County | — | — |
| Apex Contracting & Consulting INC | Claude Nicholas Boehm | — | (760) 731 1287 | GC, remodel, ADU | Fallbrook · San Diego County | — | — |
| Apex Contracting And Restoration INC | Eric Duane Schweinfurter | — | (858) 987 1800 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Apex Engineering INC | Jose De Jesus Jimenez | — | (619) 341 8903 | Other | San Diego · San Diego County | — | — |
| Apex Flooring INC | Hernandez Ivan Rodriguez | — | (619) 735 1275 | Other | San Diego · San Diego County | — | — |
| Apex Garage Doors INC | Yehuda Barhany | — | (858) 551 1558 | Other | San Diego · San Diego County | — | — |
| Apex Glass | Apex Glass | sales@apexautoglass.com.hk | (619) 691 1091 | Windows, patio, painters | Chula Vista · San Diego County | — | — |
| Apex Lath And Plaster INC | Russell Grassa | — | (619) 646 9183 | Other | El Cajon · San Diego County | — | — |
| Apex Leak Detection | Apex Leak Detection | — | (949) 374 3681 | Other | Fallbrook · San Diego County | — | — |
| Apex Lighting And Electric INC | Felipe Nava Aladro | — | (619) 448 6400 | Electricians | San Diego · San Diego County | — | — |
| Apex Mechanical Systems INC | Randall Eric Melhouse | mn@tritonair.net | (858) 536 8700 | HVAC | San Diego · San Diego County | — | — |
| Apex Pacific INC | Apex Pacific INC | sales@apexpacific.com | (858) 496 0072 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Apex Plumbing Group | Christian Francisco Alvarez-Mata | — | (619) 703 5812 | Other | San Diego · San Diego County | — | — |
| Apex Pools | Ryan Taylor Coleman | — | (619) 247 5830 | Pool | Alpine · San Diego County | — | — |
| Apex Ridge Construction | Jarad Thomas Anderson | info@apexridgeconstruction.com | (619) 541 1533 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Apex Roadworks INC | Adam Reid Hoffas | — | (760) 420 7528 | Other | Fallbrook · San Diego County | — | — |
| Apex Service & Repair INC | Chad Russell Schwersensky | — | (760) 739 9018 | Other | Escondido · San Diego County | — | — |
| Apex Works INC | Zaur Mukhamedovic Bolokov | info@apex-works.com | (858) 215 2499 | Electricians | San Diego · San Diego County | — | — |
| Apexcraft Build | Tu Van Truong | — | (619) 831 3371 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Apexx Construction INC | Jose Ramiro Morales Jurado | guy@infinitydesignbuild.com | (760) 855 3527 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| Apg Asphalt Maintenance | Nathan Thomas Hilbig | — | (858) 602 9521 | Other | San Diego · San Diego County | — | — |
| Apg Flooring | Apg Flooring | — | (760) 893 9516 | Other | San Marcos · San Diego County | — | — |
| Api Builders INC | Kimi Anne Anderson | — | (760) 451 9669 | Electricians | Fallbrook · San Diego County | — | — |
| Api Concrete Construction INC | Armando Perez Islas | — | (760) 420 8213 | Other | San Marcos · San Diego County | — | — |
| Apm Engineering INC | Alexander Paul Martin | — | (619) 352 0251 | Other | Alpine · San Diego County | — | — |
| Apo Restoration | Apo Restoration | — | (619) 851 5163 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |
| Apodaca Roof Services | John Joseph Apodaca | buildzoomsupport@blockrenovation.com | (760) 518 1259 | Other roofers | Vista · San Diego County | — | — |
| Apollo 3 Energy | Robert Ian Cardwell | info@apollo-energy.com | (609) 287 6167 | Electricians | Encinitas · San Diego County | — | — |
| Apollo Home Power LLC | Joseph Dominic Mammina | customerservice@apollohomepower.com | (858) 923 5401 | Electricians | La Jolla · San Diego County | — | — |
| Apple's Landscaping | Apple's Landscaping | — | (619) 212 6100 | Windows, patio, painters | El Cajon · San Diego County | — | — |
| Appleton Design & Construction INC | Thomas Taylor Appleton | — | (760) 420 6311 | GC, remodel, ADU | Fallbrook · San Diego County | — | — |
| Appliance Installation Services | Teva Kimball Johnson | — | (760) 828 3215 | Other | San Marcos · San Diego County | — | — |
| Appliance Installation Services INC | Shaun James Stasny | — | (619) 563 7044 | Other | San Diego · San Diego County | — | — |
| Applied Engineering & Septic | James Christopher Mcclain | — | (760) 300 5637 | Other | Valley Center · San Diego County | — | — |
| Applied Mechanical Solutions INC | Michael Robert Dornon | ap@ams-socal.com | (760) 807 5222 | HVAC | Escondido · San Diego County | — | — |
| Applied Restoration INC | Oscar Albert Bianchi | — | (619) 433 4701 | GC, remodel, ADU | El Cajon · San Diego County | — | — |
| Applied Smart Heat / The Warm Hearth | Robert Michael Ewens | — | (619) 465 0890 | Other | La Mesa · San Diego County | — | — |
| Apptek Industries | Vance Dodson Jr Campbell | bids@apptekstucco.com | (858) 875 1850 | Other | San Diego · San Diego County | — | — |