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 Mariposa, 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
Williams Excavation INC
License #435145 · A
Grade A · Excellent
Petretti C J Construction
License #568021 · B
Grade A · Excellent
Wright Mark Stephen
License #999867 · C-8
Grade A · Excellent
R and R Pool Service a Partnership
License #956545 · C53
Grade A · Excellent
Daniel and Sons Construction
License #749166 · B
Grade A · Excellent
Hambleton R Electric
License #879557 · C10
Grade A · Excellent
Marini M a Construction
License #747765 · B
Grade A · Excellent
L G a Construction/lonnie Allen
License #562190 · B
Grade A · Excellent
Nate Wise Construction
License #833491 · B
Grade A · Excellent
Rose Frank Construction INC
License #901316 · B
Grade A · Excellent
Lawson Construction
License #409070 · A
Grade A · Excellent
Thermal Alliance
License #719460 · C20
Grade A · Excellent
Sierra Masonry
License #971153 · B
Grade A · Excellent
Alltrade Construction Service INC
License #584819 · B
Grade A · Excellent
Dayhoff Cabinets
License #846685 · C-6
Grade A · Excellent
Pearson Excavating INC
License #929503 · A
Grade A · Excellent
S & S Electric
License #881257 · C10
Grade A · Excellent
Verley Construction INC
License #292143 · B
Grade A · Excellent
Lura Jerry Construction
License #883364 · B
Grade A · Excellent
Mariposa Mechanical Service
License #842033 · C20
Grade A · Excellent
Becks Tree Property Service
License #716391 · D49
Grade A · Excellent
Summit Electric
License #654599 · C10
Grade A · Excellent
Pac & Son Construction
License #1008217 · B
Grade A · Excellent
Offline Solar Electric
License #608035 · B
Grade A · Excellent
R J's Quality Painting CO
License #812536 · C33
Grade A · Excellent
Brentwood Electric
License #614628 · C10
Grade A · Excellent
A J V Heating & Cooling
License #818052 · C20
Grade A · Excellent
Allison-sierra INC
License #507261 · A
Grade A · Excellent
Always Quality Concrete
License #945961 · B
Grade A · Excellent
D's Trees
License #1030178 · D49
Grade A · Excellent
White Barry
License #1022647 · C-9
Grade A · Excellent
Accell Drywall INC
License #1049456 · C-9
Grade A · Excellent
D M C Concrete Construction
License #1058732 · C-8
Grade A · Excellent
Yosemite Glass & Window
License #1048149 · C17
Grade A · Excellent
Castro's Larry Tree Service
License #1026270 · D49
Grade A · Excellent
Lynch Excavation
License #1053805 · A
Grade A · Excellent
Mountain Landscaper
License #1069946 · C27
Grade A · Excellent
Gilbert's Bob Carpet Installation
License #502368 · C15
Grade B · Good
J C Painting
License #748252 · C33
Grade B · Good
Patterson Construction
License #937189 · B
Grade B · Good
Greener Tree Solutions LLC
License #1109859 · D49
Grade B · Good
Diversified Land and Waterscapes
License #326639 · B
Grade B · Good
Allison S P
License #416385 · A
Grade B · Good
Mcgrath Arts LLC
License #564483 · C-6
Grade B · Good
Bull Construction INC
License #357309 · B
Grade B · Good
Cascade Western
License #544564 · B
Grade B · Good
Dobson Scott Painting
License #434150 · C33
Grade B · Good
Walsh Jon Tile
License #531777 · C54
Grade B · Good
Sierra North Construction INC
License #1080411 · B
Grade B · Good
Maxon Tree and Tractor Service
License #1111672 · D49
Grade B · Good
When hiring a contractor in Mariposa, 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.