| Pyramid Business Systems | James Meredith Kennedy | — | (510) 832 1137 | Other | Oakland · Alameda County | — | — |
| Pyramid Painting INC | Craig Scott Ruybalid | — | (510) 438 9200 | Windows, patio, painters | Fremont · Alameda County | — | — |
| Pyt Construction Corp | Theodorou Peter | — | (925) 354 9333 | Electricians | Pleasanton · Alameda County | — | — |
| Q A C Construction Company | Max Jaushan Chen | — | (510) 386 3988 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Q Remodeling INC | Ho Viet Ai | — | (650) 309 4987 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Qh Construction | Quyen Duy Ho | — | (510) 750 8225 | GC, remodel, ADU | Union City · Alameda County | — | — |
| Qiang HVAC Service | Lin Qiang | — | (510) 509 0880 | HVAC | Fremont · Alameda County | — | — |
| Qinge Guo | Qinge Guo | — | (510) 385 2895 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Qingting Xu | Qingting Xu | — | (510) 364 4216 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Qpm Landscape Construction | Quentin Paul Martin | — | (925) 549 1478 | Windows, patio, painters | Pleasanton · Alameda County | — | — |
| Qrs Remodeling INC | Ron Fridel Gluzman | — | (925) 997 7705 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Qt Builder | Qt Builder | — | (510) 390 1580 | GC, remodel, ADU | Hayward · Alameda County | — | — |
| Quake City Metal | Quake City Metal | jon@quakecitymetal.com | (510) 472 4321 | Other | Oakland · Alameda County | — | — |
| Qualet Plumbing And Rooter | Qualet Plumbing And Rooter | — | (408) 656 4039 | Other | Fremont · Alameda County | — | — |
| Qualified Plumbers Services INC | Ovidio Antonio Valencia | — | (510) 471 2373 | Other | Union City · Alameda County | — | — |
| Quality Bathroom Restoration And Cabinetry | Quality Bathroom Restoration And Cabinetry | — | (510) 552 5917 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Quality Choice Construction And Painting | Omar Alejandro Bernabe Aguilar | — | (510) 692 2789 | GC, remodel, ADU | San Leandro · Alameda County | — | — |
| Quality Control Construction | Fredrick Doniphan Mackay | — | (510) 773 6050 | GC, remodel, ADU | Oakland · Alameda County | — | — |
| Quality Electrical Solution LLC | Daniel James Hampson | — | (650) 704 3982 | Electricians | Livermore · Alameda County | — | — |
| Quality Fabrication & Welding Service | Louis Alberto Maldonado | — | (510) 599 3718 | Other | Fremont · Alameda County | — | — |
| Quality Finish Carpentry | Andrew Barry Bahlman | raul@qualityfinishcarpentry.caom | (408) 688 7531 | Other | Oakland · Alameda County | — | — |
| Quality Floor Covering INC | Saul Hurtado | quality@qualityfloorcovering.com | (510) 886 8309 | Other | Hayward · Alameda County | — | — |
| Quality Flooring | Quality Flooring | — | (510) 415 0041 | Other | Hayward · Alameda County | — | — |
| Quality Glass INC | Andrew Erick Vandenoudenaller | — | (510) 445 0091 | Windows, patio, painters | Fremont · Alameda County | — | — |
| Quality Home Pros | Quality Home Pros | — | (408) 826 2385 | GC, remodel, ADU | Fremont · Alameda County | — | — |
| Quality Marble And Granite INC | Gurrola Enrique Gonzalez | — | (510) 981 9052 | Other | Oakland · Alameda County | — | — |
| Quality Plumbing | Quality Plumbing | — | (510) 825 8050 | Other | Hayward · Alameda County | — | — |
| Quality Windows & Doors INC | William D Warm | — | (925) 484 1747 | Windows, patio, painters | Pleasanton · Alameda County | — | — |
| Quang & Co Roofing INC | Buu A Lu | — | (570) 773 6626 | Other roofers | Oakland · Alameda County | — | — |
| Quang Nhut Ngo | Quang Nhut Ngo | — | (510) 437 0634 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Quantomatik INC | Marcellino Budiman Tjia | info@quantomatik.com | (510) 277 2829 | Electricians | Fremont · Alameda County | — | — |
| Quantum Builders INC | Douglas Ian Whyte | — | (714) 408 1319 | GC, remodel, ADU | Newark · Alameda County | — | — |
| Quantum Energy Services & Technologies INC | Derrick Michael Rebello | — | (415) 637 8575 | Electricians | Oakland · Alameda County | — | — |
| Quartaroli Construction Co | David John Quartaroli | — | (925) 765 6485 | GC, remodel, ADU | Livermore · Alameda County | — | — |
| Quaweay Electric | Genius Sekou Quaweay | — | (510) 998 7222 | Electricians | Oakland · Alameda County | — | — |
| Quaweay Electricians Alameda | Quaweay Electricians Alameda | — | (510) 389-8356 | Electricians | Alameda · Alameda County | — | — |
| Quetzal Construction INC | La Torre Gomez Hector De | — | (510) 229 6590 | GC, remodel, ADU | Alameda · Alameda County | — | — |
| Quick Fix Garage Door | Quick Fix Garage Door | — | (510) 508 5992 | Other | Newark · Alameda County | — | — |
| Quick Yard Care | Brandon Qt Tran | — | (510) 565 8578 | Windows, patio, painters | San Leandro · Alameda County | — | — |
| Quino Construction | Panjoj Quino Julian | — | (510) 206 3530 | GC, remodel, ADU | Oakland · Alameda County | — | — |