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 Diamond Bar, CA, 50 contractors currently hold Safety Scores of 85 or above, qualifying them as “top-rated” for 2026.
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.
Ranked by SiteVetter Safety Score, highest first
A and L Systems Solutions
License #966840 · C-7
Grade A · Excellent
L L L Development INC
License #923665 · B
Grade A · Excellent
Mac Refrigeration and Air Conditioning CO
License #580557 · C20
Grade A · Excellent
Service Wizards
License #797071 · C20
Grade A · Excellent
SO Cal Hardwood Floors
License #824420 · C15
Grade A · Excellent
Falkon Construction INC
License #911791 · A
Grade A · Excellent
Place Construction & Development INC
License #515653 · A
Grade A · Excellent
Tetra Tech Bas INC
License #572017 · A
Grade A · Excellent
Hardy Landscape Construction INC
License #905954 · C27
Grade A · Excellent
Pub Construction INC
License #788668 · A
Grade A · Excellent
Clifton Joe Tile Contractor INC
License #401939 · C54
Grade A · Excellent
JH Builder and Remodeling INC
License #751479 · B
Grade A · Excellent
MR A/c
License #864636 · C20
Grade A · Excellent
Mcmaster Mechanical
License #879152 · C20
Grade A · Excellent
Miller G Development CO
License #325200 · B
Grade A · Excellent
Kertland Roofing INC
License #510174 · B
Grade A · Excellent
Caruso Edward Electric
License #529763 · C10
Grade A · Excellent
All About T-bar
License #570421 · C-2
Grade A · Excellent
Oxford Painting
License #580795 · C33
Grade A · Excellent
Ace Rodil Heating and Air Conditioning
License #631042 · C20
Grade A · Excellent
C - Thirty - Six INC
License #739644 · B
Grade A · Excellent
I S Firepro
License #740006 · C16
Grade A · Excellent
Mirae Construction CO
License #876472 · A
Grade A · Excellent
Vision Tree Experts INC
License #1004697 · D49
Grade A · Excellent
Monarch Information Systems LLC
License #1007648 · C10
Grade A · Excellent
Hammond Drywall Construction
License #956694 · C-2
Grade A · Excellent
Climate Specialists
License #1003654 · C20
Grade A · Excellent
Liberty Woodworking
License #903696 · C-6
Grade A · Excellent
Cmpg Project Management
License #953355 · B
Grade A · Excellent
SS Smith Landscape
License #789335 · C27
Grade A · Excellent
Hoffice Beautiful INC
License #965248 · B
Grade A · Excellent
CT & T Concrete Paving INC
License #875627 · A
Grade A · Excellent
Property Investment and Development Group
License #1006865 · B
Grade A · Excellent
R M G Building INC
License #432656 · B
Grade A · Excellent
Sundial Concrete Constructors
License #1009010 · C-8
Grade A · Excellent
Managa Raul Manuel
License #1005647 · B
Grade A · Excellent
Daley Kenneth Heating & Air Services
License #798187 · C20
Grade A · Excellent
Aveo INC
License #969881 · A
Grade A · Excellent
Tasco Pacific Fire Protection
License #750602 · C10
Grade A · Excellent
Salazar Ralph
License #819223 · B
Grade A · Excellent
Consma INC
License #951561 · B
Grade A · Excellent
Atlantic Air Conditioning INC
License #613226 · C20
Grade A · Excellent
Likai Chen Hvac INC
License #926434 · C20
Grade A · Excellent
Cal Steam Company
License #674646 · C-4
Grade A · Excellent
Electech
License #982409 · C10
Grade A · Excellent
C M Innovate INC
License #992367 · C54
Grade A · Excellent
Sunshine Roofing INC
License #755126 · C39
Grade A · Excellent
Panacomm
License #832704 · C-7
Grade A · Excellent
Echo Development INC
License #993395 · A
Grade A · Excellent
Tahada Construction
License #934622 · B
Grade A · Excellent
When hiring a contractor in Diamond Bar, 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:
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.