Mammoth Underground LLC
Licensed electrician in Las Vegas, Nevada
Mammoth Underground LLC holds NSCB licence 0055303, active, licensed since 22 Apr 2003, rated 3.8 from 18 Google reviews. Bonded for $50,000 with Merchants Bonding Company (Mutal). No complaints on the NSCB record.
Report card
- Licence activeNSCB #0055303, class C-2. Issued 22 Apr 2003, expires 30 Apr 2027.
- Licensed 24 yrsSince 22 Apr 2003.
- Bonded$50,000 with Merchants Bonding Company (Mutal), since 12 Sep 2024. Nevada sets each bond between $1,000 and $500,000 by the size of the contractor's operations and its financial record, so a bigger bond means a bigger business, not a better one.
- No complaintsNone on the NSCB record.NSCB record
Checked against the Nevada State Contractors Board (NSCB) register on 4 Nov 2026.
Google reviews
3.8(18 reviews)Abhishek★★★★★ a year agoView on Google
Hey Mammoth Underground LLC, I was trying to find your website when looking for a "Home Construction" in city Las Vegas but couldn't find one I know this is a bit unexpected but i decided to build you a new website would it be okay to send you the link so you can check it out ? Excited to hear what you think ; Abhishek
Angel Osorio★★★★★ a year agoView on Google
Hector, Frank and the rest of Crew are Awesome
Derek Korschinowski★★★★★ 7 months agoView on Google
Not a customer, but am a driver in Nevada. Jim doesn't care about driving safely, and will cut you off or try to hit you if you are in the way. Yes I have dashcam footage, no he should not have a license
Jay P.★★★★★ 2 years agoView on Google
On Russell and Rainbow 7:50 am white truck didn't get markings other than company information. Driver swerving in-between lanes. Appeared to be on their phone. Had to use my horn and swerve keep them from side swiping me. Get dash cams and hold your employees responsible.
Ginger M★★★★★ 7 years agoView on Google
While I'm Driving our Infiniti to appt. Wishing I was in my beast today. Just few minutes ago this driver for mammoth underground in white pickup truck #1061 paint peeling off bed. Almost ran me over exiting 95 / rainbow/ Summerlin pkwy.. he then continues to weave all over .... not sure what lane he wants to be in?? Must ask myself Is he intoxicated or on his phone??? Called mammoth underground and reported. Hav…
Read all 18 reviews on Google Reviews and photos from Google, 4 Nov 2026.
OSHA inspections
US Department of Labor enforcement data, matched by business name and city.
- 31 Mar 2026 · Referral0 violations · case
- 18 Mar 2025 · Referral1 violation, $5,321 penalty · case
- 3 Dec 2024 · Referral2 violations, $21,281 penalty · case
- 4 Nov 2024 · Referral1 violation, $8,511 penalty · case
- 2 Oct 2023 · Referral0 violations · case
- 22 Jun 2018 · Referral1 violation, $1,000 penalty · case
- 16 Oct 2017 · Referral1 violation, $1,890 penalty · case
- 23 Dec 2016 · Accident0 violations · case
- 17 Mar 2015 · Referral0 violations · case
Why it ranks #61 of 522 electricians in Las Vegas
Score 80.2 / 100. Claiming this listing or using Theo never changes it. How we rank
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