Home / Contact

Contact a septic and excavation contractor in Auburn, WA

The fastest way to reach us is a phone call during business hours. For estimates, email works too.

Lone Mountain Construction, LLC

Phone
(206) 498-9277
Estimates
cal@LMC-WA.com
Hours
Mon–Fri, 7am–5pm
Based in
19328 SE Green Valley Rd
Auburn, WA 98092
License
WA general contractor #LONEMMC762DG, active through May 2028
Coverage
$1,000,000 liability insurance, $30,000 bond

When you email, include the property address and what you need (new septic, replacement, camera inspection or excavation). The email button above starts that message for you.

Open in Google Maps · Facebook

Planning a septic system or site work?

Call or email for an estimate. We answer Mon–Fri, 7am–5pm.

Call (206) 498-9277