| ADVANCED TECHNOLOGY GROUP INC | BB7 | Boiler | — |
| ADVANCED TECHNOLOGY GROUP INC | 34-399PB | Plumbing | — |
| ALL PRO PLUMBING SERVICES LLC | PB772 | Plumbing | — |
ALL PRO WATER HEATER SERVICES
ALL PRO PLUMBING SERVICES LLC | LMS449 | Electrical | — |
| ARM & AMPS ELECTRIC LLC | C2017 | Electrical | — |
| ATHENS ELECTRIC INC | 34-144C | Electrical | — |
| ATI RESOURCES INC | PB104 | Plumbing | — |
| BAXTERS GENERAL CONTRACTING LLC | PB3658 | Plumbing | — |
BEAVER ELECTRIC
NORTH VALLEY ELECTRIC LLC | C668 | Electrical | — |
| BECKER ELECTRIC LLC | C1569 | Electrical | — |
| BLUE HORIZONS TECHNICAL SOLUTIONS INC | CLE286 | Electrical | — |
BRADLEY MECHANICAL
BRADLEY CONSTRUCTION INC | LHR200 | Electrical | — |
| BRAVO ZULU LLC | C1950 | Electrical | — |
| BRIDGEPORT INCORPORATED | LMS507 | Electrical | — |
| BRIDGEPORT INCORPORATED | PB3030 | Plumbing | — |
BUCK GENERAL CONTRACTING INC
LITE RITE ELECTRIC INC | 34-358C | Electrical | — |
| C & B CONSTRUCTION EXCAVATION & FORESTRY INC | PB2505 | Plumbing | — |
| CARR ELECTRICAL TECHNOLOGY INC | B00-1034 | Boiler | — |
| CARR ELECTRICAL TECHNOLOGY INC | 37-905C | Electrical | — |
| CARR ELECTRICAL TECHNOLOGY INC | 34-387PB | Plumbing | — |
| CBW ELECTRIC LLC | C1427 | Electrical | — |
| CHOZEN CONSTRUCTION LLC | PB3699 | Plumbing | — |
| CLASSIC ELECTRIC LLC | C414 | Electrical | — |
| CLOG BUSTERS LLC | LMS651 | Electrical | — |
| CLOG BUSTERS LLC | PB1383 | Plumbing | — |
EAST SIDE DRAIN
WEST SIDE DRAIN COMPANY | CPI189 | Electrical | — |
EAST SIDE DRAIN; WEST SIDE DRAIN
WEST SIDE DRAIN COMPANY | PB1466 | Plumbing | — |
EDWARD MULLEN PLUMBING
THE MULLEN COMPANY | 34-260PB | Plumbing | — |
| ELEVATE HEATING & COOLING INC | CRE354 | Electrical | — |
| ELEVATE HEATING & COOLING INC | LHR720 | Electrical | — |
| EPLING ELECTRIC LLC | C1668 | Electrical | — |
| FORGE PEAK ELECTRICAL LLC | C2246 | Electrical | — |
| FOUR SEASONS LANDSCAPE MAINTENANCE LLC | PB3623 | Plumbing | — |
| FRANKS EXCAVATING LLC | PB3678 | Plumbing | — |
| GARNER ELECTRIC CO | 34-305C | Electrical | — |
| HILLSBORO ELECTRIC LLC | 34-499C | Electrical | — |
| HILLSBORO PLUMBING CO | 34-207PB | Plumbing | — |
| HUGHES ELECTRICAL CONTRACTORS INC | 34-281C | Electrical | — |
| HUGHES ELECTRICAL CONTRACTORS INC | CLE160 | Electrical | — |
| HUGHES ELECTRICAL CONTRACTORS INC | LMS47 | Electrical | — |
| JOHNSON RESOURCES LLC | PB2950 | Plumbing | — |
| JTA PLUMBING LLC | PB2761 | Plumbing | — |
| JTR PLUMBING INC | 34-422PB | Plumbing | — |
| KAMAKOA PLUMBING SOLUTIONS LLC | LMS591 | Electrical | — |
| KAMAKOA PLUMBING SOLUTIONS LLC | PB3342 | Plumbing | — |
| KEY ELECTRICAL CONSTRUCTION INC | C1248 | Electrical | — |
| MENDEZ CONCRETE EXPERTS LLC | PB2653 | Plumbing | — |
| MICHAEL T DUNN PLUMBING LLC | LMS633 | Electrical | — |
| MICHAEL T DUNN PLUMBING LLC | PB2746 | Plumbing | — |
| MISTER ES CONSTRUCTION INC | 34-423PB | Plumbing | — |
| MR RODGERS ELECTRIC LLC | C2241 | Electrical | — |
| MSI MECHANICAL SYSTEMS INC | 34-183PB | Plumbing | — |
| NEW SYSTEM PLUMBING INC | LMS653 | Electrical | — |
NEW SYSTEM PLUMBING INC; BEAVERTON PLUMBING
NEW SYSTEM PLUMBING INC | PB3230 | Plumbing | — |
O'LEARY AIR
OLEARY ENTERPRISES INC | PB2621 | Plumbing | — |
| OLEARY ENTERPRISES INC | LHR502 | Electrical | — |
| P DICKINSON ELECTRIC INC | C1190 | Electrical | — |
| PEAK FIRE PROTECTION LLC | CLE678 | Electrical | — |
PEX PLUMBING
FORTHRIGHT CONSTRUCTION INC | PB2092 | Plumbing | — |
| PINK FLAMINGO PLUMBING LLC | PB2845 | Plumbing | — |
| PIPE WORKS PLUMBING LLC | LMS662 | Electrical | — |
| PIPE WORKS PLUMBING LLC | PB3514 | Plumbing | — |
| PLOMEROS PLUMBING LLC | PB2835 | Plumbing | — |
| PRO LANDSCAPE INC | PB200 | Plumbing | — |
| REA MECH INC | 34-389PB | Plumbing | — |
RENNER TRUCKING & EXCAVATION INC
RENNER TRUCKING & EXCAVATING INC | PB463 | Plumbing | — |
| RK ELECTRIC INC | 34-375C | Electrical | — |
| ROBINSON CONSTRUCTION CO | 34-460PB | Plumbing | — |
| ROSS ELECTRIC INC | 34-436C | Electrical | — |
| RTG PLUMBING & MECHANICAL INC | PB2531 | Plumbing | — |
RUBI HEATING & COOLING
FLORES HEATING & COOLING INC | CRE296 | Electrical | — |
| RYAN PARKER PLUMBING LLC | PB3016 | Plumbing | — |
| SKS PLUMBING LLC | LMS691 | Electrical | — |
| SKS PLUMBING LLC | PB2813 | Plumbing | — |
| SOBRO TOWER LLC | C1900 | Electrical | — |
SPHAERA SOLUTIONS
SPHAERA INC | C1670 | Electrical | — |
| SUBCOM EXCAVATION & UTILITIES LLC | PB1977 | Plumbing | — |
| SUNSET PLUMBING COMPANY LLC | PB3702 | Plumbing | — |
| TWISTED PAIR INCORPORATED | CLE534 | Electrical | — |
V & K CONSTRUCTION
V & K NUSSBAUMER ENTERPRISES LLC | PB592 | Plumbing | — |
| WILFERT HEATING AND AIR CONDITIONING INC | CLE200 | Electrical | — |
| WILLAMETTE HVAC LLC | BB149 | Boiler | — |
| WILLAMETTE HVAC LLC | 34-346CRE | Electrical | — |
| WILLAMETTE HVAC LLC | 323LHR | Electrical | — |
| WILLAMETTE HVAC LLC | LMS307 | Electrical | — |
| WILLAMETTE HVAC LLC | PB1579 | Plumbing | — |