| Blue Bridge Painting | Estrada Erick | — | (858) 988 9000 | Windows, patio, painters | Lakeside · San Diego County | — | — |
| Blue Clover Construction INC | Michelle Lee Duggan | info@bluecloverie.com | (619) 572 0406 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Blue Coast Consulting | Blue Coast Consulting | — | (858) 523 9650 | GC, remodel, ADU | Del Mar · San Diego County | — | — |
| Blue Coast Fence | Blue Coast Fence | — | (760) 712 1080 | Other | Oceanside · San Diego County | — | — |
| Blue Coast Masonry | Blue Coast Masonry | — | (760) 644 1328 | Other | Vista · San Diego County | — | — |
| Blue Coast Pool Service | Wayne Thomas Nicol | — | (619) 871 1795 | Pool | Valley Center · San Diego County | — | — |
| Blue Collar HVAC Mechanical INC | Cuauhtemoc Jr Arteaga | — | (619) 751 9695 | HVAC | Imperial Beach · San Diego County | — | — |
| Blue Cove Development | Blue Cove Development | impallari@gmail.com | (951) 423 6517 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Blue Current Construction INC | Todd Edwin Turner | hello@bluecurrentconstruction.com | (760) 855 7827 | GC, remodel, ADU | Vista · San Diego County | — | — |
| Blue Cut Construction | Todd Matthew Williams | — | (949) 235 1215 | GC, remodel, ADU | La Jolla · San Diego County | — | — |
| Blue Daytona INC | Scotty Coyote | — | (760) 917 9007 | GC, remodel, ADU | Fallbrook · San Diego County | — | — |
| Blue Diamond Heating And Air | Donavan Paul Truesdale | — | (619) 567 9361 | HVAC | El Cajon · San Diego County | — | — |
| Blue Diamond Plumbing And Mechanical INC | William David Willets | — | (619) 400 7695 | Other | San Diego · San Diego County | — | — |
| Blue Dolphin Of San Diego | Kevin Douglas Holt | — | (858) 569 7198 | Pool | San Diego · San Diego County | — | — |
| Blue Duck Concrete Construction | Samuel Rivera Magale | — | (619) 750 9465 | Other | La Mesa · San Diego County | — | — |
| Blue Flame Heating And Air-conditioning | Blue Flame Heating And Air-conditioning | — | (619) 944 2138 | HVAC | El Cajon · San Diego County | — | — |
| Blue Haven Pools & Spa | Stephen Albert Treese | — | (760) 738 9322 | Pool | San Diego · San Diego County | — | — |
| Blue Horizon Builders INC | John Christopher Leitz | — | (619) 929 4657 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Blue Hour Electric | James Joseph Markert | — | (619) 869 3323 | Electricians | San Diego · San Diego County | — | — |
| Blue House Electric | Jeremy Matthew Hill | — | (619) 508 2560 | Electricians | Santee · San Diego County | — | — |
| Blue Jay Electric INC | Theresa Marie Roberts | jeremiah@bluejayelectric.com | (619) 962 4504 | Electricians | El Cajon · San Diego County | — | — |
| Blue Kap Plumbing | Blue Kap Plumbing | — | (619) 666 1574 | Other | San Diego · San Diego County | — | — |
| Blue Lagoon Pool Care | Thomas Edgar Master | tom@bluelagoonpoolcare.com | (760) 476 0603 | Pool | Carlsbad · San Diego County | — | — |
| Blue Line Construction Services | Antonio Elizondo Valdez | — | (619) 414 4394 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Blue Line Stucco INC | Vicente Raul Santiag Beaz | — | (760) 936 3389 | Other | San Marcos · San Diego County | — | — |
| Blue Lion Construction INC | Jose Gustavo Covarrubias Lopez | buildzoomsupport@blockrenovation.com | (619) 608 1801 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |
| Blue Mayan Tile & Mosaic | Blue Mayan Tile & Mosaic | — | (760) 685 8865 | Other | Fallbrook · San Diego County | — | — |
| Blue Monarch Landscape Development | Fernando Bedolla | — | (619) 908 9696 | Windows, patio, painters | San Diego · San Diego County | — | — |
| Blue Moon General Contractor INC | Phuong Tan Ho | guy@infinitydesignbuild.com | (619) 430 6249 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Blue Moon Pools INC | Mariscal Cynthia | — | (619) 258 7665 | Pool | Santee · San Diego County | — | — |
| Blue Mountain Heating And Cooling | Ravin Eric Perinpanayagam | — | (858) 705 7251 | HVAC | San Diego · San Diego County | — | — |
| Blue Nose Construction | Jose Antonio Rubio | — | (619) 601 7041 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Blue Ocean Painting | Blue Ocean Painting | — | (619) 851 6567 | Windows, patio, painters | Spring Valley · San Diego County | — | — |
| Blue Pacific Engineering Construction INC | Elihu Shahram | — | (858) 956 1456 | Electricians | San Diego · San Diego County | — | — |
| Blue Pacific Plumbing Mechanical | Blue Pacific Plumbing Mechanical | — | (619) 955 2094 | Other | San Diego · San Diego County | — | — |
| Blue Pals Plumbing INC | Gomez Ivan | office@bluepalsplumbing.com | (760) 672 4623 | Other | Fallbrook · San Diego County | — | — |
| Blue Peak Contractors | Jose Antonio Sanches | — | (951) 837 0441 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Blue Planet Drains & Plumbing INC | Miguel Angel Mercad Cueva | — | (619) 863 9593 | Other | Chula Vista · San Diego County | — | — |
| Blue Planet Energy Solutions | Michael Lance Copelin | — | (800) 403 1306 | Electricians | San Diego · San Diego County | — | — |
| Blue Point Construction INC | Joshua Paul Luz | — | (619) 508 1336 | GC, remodel, ADU | San Diego · San Diego County | — | — |