| Butler Building And Engineering INC | Rocky Craig Butler | chantelle@savvybrandinggroup.com | (808) 778 7511 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Butler Electric | Jacob Everhett Butler | butler.electric@gmail.com | (760) 271 6646 | Electricians | Ramona · San Diego County | — | — |
| Butler Garage Doors | David Luis Butler | — | (619) 672 2857 | Other | Chula Vista · San Diego County | — | — |
| Butler Landscape | Butler Landscape | — | (760) 728 7006 | Windows, patio, painters | Fallbrook · San Diego County | — | — |
| Butte Plumbing Company | Mark Joseph Carvalho | — | (530) 591 0367 | Other | Oceanside · San Diego County | — | — |
| Butterfield's General Building Contractors INC | Butterfield Mario | — | (619) 454 9477 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Butterworth Const | Butterworth Const | — | (619) 208 0979 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Buxcon Sheetmetal INC | Thomas Paul Hendry | aqremodeling2@gmail.com | (619) 937 0001 | HVAC | Santee · San Diego County | — | — |
| Buxton Blinds | Buxton Blinds | — | (619) 735 4816 | Other | San Diego · San Diego County | — | — |
| Buys Construction | Jeffrey Daniel Buys | buildzoomsupport@blockrenovation.com | (619) 632 7220 | GC, remodel, ADU | Santee · San Diego County | — | — |
| Bv Ventures LLC DBA Alchemy Construction | Bruce Ralph Vanderveen | — | (805) 540 0736 | GC, remodel, ADU | Encinitas · San Diego County | — | — |
| Bvf Antelope Valley A Joint Venture | & Veatch Construction INC Black | — | (760) 941 7130 | Other | Escondido · San Diego County | — | — |
| Bvglass | Steven Lawrence Welsh | — | (619) 449 2429 | Windows, patio, painters | Lakeside · San Diego County | — | — |
| Bw Decoration INC | Lin Li | — | (619) 261 5153 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Bw Premier Builders | Noe Jr Larios | — | (760) 315 5019 | GC, remodel, ADU | Escondido · San Diego County | — | — |
| By Design Enterprises INC | Charles Lynn Householder | — | (760) 519 8820 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| By The Book Plumbing Heating Air Conditioning | Jeffrey Royal Morey | — | (619) 964 5366 | HVAC | San Diego · San Diego County | — | — |
| By The Water Builders INC | Dean Michael Mcdonald | contact@bythewaterbuilders.com | (619) 831 7936 | GC, remodel, ADU | Oceanside · San Diego County | — | — |
| Bycor General Contractors INC | Richard Alan Byer | — | (858) 587 1901 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Byer Blake Construction | Blake Andrew Byer | — | (619) 341 1061 | GC, remodel, ADU | Encinitas · San Diego County | — | — |
| Byldin Homes INC | James W Schropp | bydlin@gmail.com | (619) 316 8965 | GC, remodel, ADU | Encinitas · San Diego County | — | — |
| Byrom - Davey INC | Christine Ann Butler | — | (858) 513 7199 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Byron Toews | Byron Toews | — | (760) 801 2105 | Windows, patio, painters | Oceanside · San Diego County | — | — |
| Byron Wery Hardwood | Byron Wery Hardwood | — | (619) 794 8630 | Other | Poway · San Diego County | — | — |
| Bz Frye Construction INC | Christopher Joseph Frye | — | (619) 757 9521 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Bz Landscape INC | Ziramba Rodriguez Bersain | — | (619) 942 7766 | Windows, patio, painters | Chula Vista · San Diego County | — | — |
| C & A Landscape Services | Ruiz Daniel | — | (619) 710 5565 | Windows, patio, painters | San Diego · San Diego County | — | — |
| C & C Custom Painting | Candido Iribe-Lopez | — | (619) 436 7646 | Windows, patio, painters | San Diego · San Diego County | — | — |
| C & C Installations INC | Hugh Roy Staley | — | (760) 434 2420 | Other | Carlsbad · San Diego County | — | — |
| C & C Plumbing Partnership INC | William Joseph Iii Cerney | — | (619) 286 9202 | Other | San Diego · San Diego County | — | — |
| C & C Shutters And Moe | James Michael Gordon | — | (760) 723 8147 | Other | Fallbrook · San Diego County | — | — |
| C & D Modular Construction LLC | Scott Alexander Cooper | — | (858) 752 1290 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| C & E Construction | Carlos Castaneda | — | (619) 871 5387 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |
| C & G General Builders INC | Gudino Gerardo Garcia | — | (619) 721 8390 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| C & G Landscape INC | Fili Aguilar Camargo | — | (858) 204 8728 | Windows, patio, painters | Poway · San Diego County | — | — |
| C & H Roofing | Hernandez Carlos | info@christianroofing.com | (619) 600 2236 | Other roofers | National City · San Diego County | — | — |
| C & H Tree Service INC DBA C & H Gardens Artistic Landscape & | Kent Joseph Horner | — | (760) 846 2200 | Windows, patio, painters | Encinitas · San Diego County | — | — |
| C & L Construction And Remodeling INC | Mario Ivan Chavez-enriquez | — | (619) 776 4488 | GC, remodel, ADU | Chula Vista · San Diego County | — | — |
| C & M Partners International INC | Carlos Anibal Jr Orellana | — | (760) 579 9066 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| C & R Roofing | Roger Marcus Pineda | info@christianroofing.com | (619) 247 4308 | Other roofers | Escondido · San Diego County | — | — |