Top-Rated Contractors in South San Francisco

50 verified

These contractors have SiteVetter Safety Scores of 85+ out of 100, indicating strong compliance with licensing, insurance, bonding, and federal requirements.

A SiteVetter Safety Score is a proprietary 0-100 compliance rating that aggregates contractor data from six sources: California Contractors State License Board (CSLB), SAM.gov federal exclusions, OSHA safety inspections, Department of Labor wage records, EPA environmental compliance, and building permit records from major California cities. In South San Francisco, CA, 50 contractors currently hold Safety Scores of 85 or above, qualifying them as “top-rated” for 2026.

How We Calculate Safety Scores

Our Safety Score aggregates data from 6 sources: CSLB license status, workers' compensation coverage, contractor bonding, federal databases including SAM.gov (debarment), OSHA (safety violations), DOL (wage violations), and building permits. Scores of 85+ indicate contractors with active licenses, proper insurance, and clean federal records.

Top 50 Contractors by Safety Score

Ranked by SiteVetter Safety Score, highest first

#1

Firm Construction Company

License #652070 · B

95/100

Grade A · Excellent

#2

Super Roofing INC

License #519359 · C39

95/100

Grade A · Excellent

#3

Cornerstonehd Construction INC

License #1006251 · B

95/100

Grade A · Excellent

#4

Berlin Food & Lab Equipment CO

License #941086 · C43

95/100

Grade A · Excellent

#5

North State Environmental

License #920453 · A

95/100

Grade A · Excellent

#6

A & S Electric LLC

License #985254 · C10

95/100

Grade A · Excellent

#7

Bachmann Woodworking INC

License #962316 · C-6

95/100

Grade A · Excellent

#8

D a W Electric INC

License #927569 · C10

95/100

Grade A · Excellent

#9

Bajada Electric INC

License #409957 · C10

95/100

Grade A · Excellent

#10

San Francisco Waterproofing Masonry

License #956325 · C29

95/100

Grade A · Excellent

#11

P3 Builders

License #978407 · B

95/100

Grade A · Excellent

#12

One Construction LLC the

License #971849 · B

95/100

Grade A · Excellent

#13

Core Glass & Aluminum INC

License #924066 · C17

95/100

Grade A · Excellent

#14

Cal State Roofing CO INC

License #530721 · C39

95/100

Grade A · Excellent

#15

Glorit Steven Harris Plumbing Contractor

License #430548 · C36

95/100

Grade A · Excellent

#16

M J M Construction

License #1007282 · B

95/100

Grade A · Excellent

#17

Alexander Builders INC

License #866157 · B

95/100

Grade A · Excellent

#18

L & D Development INC

License #644983 · B

95/100

Grade A · Excellent

#19

Dan's Drilling

License #360768 · C13

95/100

Grade A · Excellent

#20

Custom Homes Plumbing

License #1003191 · C36

95/100

Grade A · Excellent

#21

Global Sun Landscape

License #869130 · C27

95/100

Grade A · Excellent

#22

Eddy's Plumbing CO INC

License #919899 · C36

95/100

Grade A · Excellent

#23

Viking Painting and Remodelling LLC

License #995742 · C33

95/100

Grade A · Excellent

#24

A a Builders & Company

License #644508 · B

95/100

Grade A · Excellent

#25

Polytec Construction Company INC

License #943505 · A

95/100

Grade A · Excellent

#26

Kwong Electric and Alarm

License #656474 · C10

95/100

Grade A · Excellent

#27

Sandoval Abel Painting

License #952415 · C33

95/100

Grade A · Excellent

#28

Dwyer O Plastering & Stucco INC

License #834345 · C35

95/100

Grade A · Excellent

#29

A 1 Fence Company

License #998389 · C13

95/100

Grade A · Excellent

#30

San Francisco's Best Iron Works INC

License #1002407 · C23

95/100

Grade A · Excellent

#31

MC Glinchey Construction LLC

License #930902 · B

95/100

Grade A · Excellent

#32

Ese Construction INC

License #886090 · B

95/100

Grade A · Excellent

#33

J L Construction and Associates Incorporated

License #390886 · B

95/100

Grade A · Excellent

#34

Copello Electric CO

License #904608 · C10

95/100

Grade A · Excellent

#35

Art OF Construction INC

License #798323 · B

95/100

Grade A · Excellent

#36

A-1 Painting INC

License #389891 · C33

95/100

Grade A · Excellent

#37

O'connor Plumbing & Fire Protection INC

License #498866 · C16

95/100

Grade A · Excellent

#38

Lynch Construction INC

License #1009721 · B

95/100

Grade A · Excellent

#39

C G Moving Company INC

License #987530 · D34

95/100

Grade A · Excellent

#40

Inside Out

License #971673 · B

95/100

Grade A · Excellent

#41

Gateway Plumbing

License #846292 · C36

95/100

Grade A · Excellent

#42

Mccurdy Mike Roofing INC

License #477152 · C39

95/100

Grade A · Excellent

#43

Goliath Construction

License #1005670 · B

95/100

Grade A · Excellent

#44

Ruane Patrick J INC

License #146811 · C-9

95/100

Grade A · Excellent

#45

Argos Construction

License #918864 · B

95/100

Grade A · Excellent

#46

Ace Furnace Company INC

License #235989 · C20

95/100

Grade A · Excellent

#47

Annuzzi Heating and Cooling INC

License #742916 · C20

95/100

Grade A · Excellent

#48

Servicemaster OF San Francisco / San Mateo

License #1005703 · B

95/100

Grade A · Excellent

#49

Hoem & Associates INC

License #381718 · C15

95/100

Grade A · Excellent

#50

Window Works

License #961285 · D52

95/100

Grade A · Excellent

Finding the Best Contractors in South San Francisco

When hiring a contractor in South San Francisco, California, due diligence matters. The contractors listed above have been verified against multiple government databases and achieved Safety Scores of 85 or higher—placing them among the most compliant contractors in the area.

Our Safety Score considers:

  • License Status — Active CSLB license with proper classifications
  • Workers' Compensation — Current coverage to protect you from liability
  • Contractor Bond — Financial protection if work isn't completed
  • Federal Compliance — No debarments, wage violations, or safety citations

While a high Safety Score is a strong indicator of a reputable contractor, we always recommend getting multiple quotes, checking references, and verifying the contractor is licensed for your specific type of project.

Safety Scores are calculated based on publicly available government records and are updated weekly. For official verification, check directly with CSLB at cslb.ca.gov.