Top-Rated Contractors in Castro Valley

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 Castro Valley, 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

Bayside Roofing Company

License #939666 · C39

95/100

Grade A · Excellent

#2

Situ Construction INC

License #987813 · B

95/100

Grade A · Excellent

#3

J & a Construction

License #974834 · B

95/100

Grade A · Excellent

#4

Cal-valley Painting INC

License #924600 · C33

95/100

Grade A · Excellent

#5

Slb Construction INC

License #575742 · B

95/100

Grade A · Excellent

#6

Beck Brian Construction

License #869512 · B

95/100

Grade A · Excellent

#7

Moore Residential Roofing INC

License #1013956 · C39

95/100

Grade A · Excellent

#8

Buchmann INC

License #1004484 · A

95/100

Grade A · Excellent

#9

Jefferson Landscape and Design

License #824650 · C27

95/100

Grade A · Excellent

#10

Lyons Construction

License #761972 · B

95/100

Grade A · Excellent

#11

HB Construction Services INC

License #1001862 · B

95/100

Grade A · Excellent

#12

Tanev Windows & Doors

License #923777 · C17

95/100

Grade A · Excellent

#13

Silva James P Construction INC

License #530036 · B

95/100

Grade A · Excellent

#14

Mobility 4u

License #940150 · D21

95/100

Grade A · Excellent

#15

Huska Kelly Contracting

License #506830 · B

95/100

Grade A · Excellent

#16

Huang F Construction INC

License #1011198 · B

95/100

Grade A · Excellent

#17

R a Custom Siding

License #1007444 · B

95/100

Grade A · Excellent

#18

Wing's Roofing INC

License #698113 · B

95/100

Grade A · Excellent

#19

G X Construction CO

License #1008387 · B

95/100

Grade A · Excellent

#20

Victory Construction INC

License #735323 · B

95/100

Grade A · Excellent

#21

American River Framing LLC

License #746425 · B

95/100

Grade A · Excellent

#22

Affordable Heating and Air Conditioning

License #909632 · C20

95/100

Grade A · Excellent

#23

Polymer Floor & Wall Coating Systems

License #980836 · D12

95/100

Grade A · Excellent

#24

Hansen Landscape Contractors INC

License #440372 · C27

95/100

Grade A · Excellent

#25

Alameda Engineering

License #562641 · A

95/100

Grade A · Excellent

#26

C I C Company

License #988255 · C-6

95/100

Grade A · Excellent

#27

East Bay Construction

License #650791 · B

95/100

Grade A · Excellent

#28

East Bay Restoration

License #827881 · ASB

95/100

Grade A · Excellent

#29

All Commercial Fire Protection INC

License #926594 · C16

95/100

Grade A · Excellent

#30

M L Electric

License #878028 · C10

95/100

Grade A · Excellent

#31

All Star Team Construction

License #962122 · B

95/100

Grade A · Excellent

#32

Gomez Adrian Roofing LLC

License #790786 · C39

95/100

Grade A · Excellent

#33

J D Z Concrete INC

License #976647 · C-8

95/100

Grade A · Excellent

#34

Demiguel Plumbing

License #406575 · C16

95/100

Grade A · Excellent

#35

Knuppe H James

License #214462 · B

95/100

Grade A · Excellent

#36

Rodriguez Hardwood Floors INC

License #790950 · C15

95/100

Grade A · Excellent

#37

Red Door Restoration INC

License #916469 · B

95/100

Grade A · Excellent

#38

Plants Unlimited INC

License #393699 · C27

95/100

Grade A · Excellent

#39

Kozuki Landscaping

License #828978 · C27

95/100

Grade A · Excellent

#40

Alligator Plumbing INC

License #995431 · C36

95/100

Grade A · Excellent

#41

Property Pros Construction INC

License #889146 · B

95/100

Grade A · Excellent

#42

Euromarble and Granite INC

License #978274 · C54

95/100

Grade A · Excellent

#43

Del Rosario Christopher Emanuel

License #872088 · B

95/100

Grade A · Excellent

#44

Bailey Roofing

License #549062 · C39

95/100

Grade A · Excellent

#45

Tang's Electric

License #661361 · C10

95/100

Grade A · Excellent

#46

Punjab Construction

License #689179 · B

95/100

Grade A · Excellent

#47

C R F Builders INC

License #926072 · B

95/100

Grade A · Excellent

#48

Syufy Builders

License #530377 · B

95/100

Grade A · Excellent

#49

Two Brothers Roofing INC

License #378564 · C39

95/100

Grade A · Excellent

#50

Absolute Painting

License #709370 · C33

95/100

Grade A · Excellent

Finding the Best Contractors in Castro Valley

When hiring a contractor in Castro Valley, 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.