Digger Construction LLC is the excavation contractor Rapid City and the Black Hills call when the job has to be done right and done fast. From sewer lines and septic systems to retaining walls, snow removal, and lot clearing, owner Joel Williams and his crew show up on time, work clean, and stand behind every job. We are veteran and family owned, licensed and insured, OSHA 80 certified, and we can start most services the same day. Call or text (605) 389-0863 for a free same-day estimate.
We handle the digging, hauling, and groundwork most Black Hills homeowners and businesses would rather not tackle alone.
Installation, repair, and replacement of sewer lines with minimal disruption to your property.
Septic installation, inspection, and repair done to code so your system performs and passes.
Durable retaining walls that hold back soil, stop erosion, and turn a slope into usable yard.
Residential and commercial plowing, salting, and ice clearing all winter long.
Clearing brush and trees and leveling ground so your site is ready to build, landscape, or pave.
Joel started Digger Construction to give the Black Hills a contractor that treats people straight. That means honest pricing, real communication, and crews who respect your property. We are city and state licensed, fully insured, and OSHA 80 certified, so the work meets the highest safety and code standards. We offer warranties on our labor, we work directly with insurance companies when a claim is involved, and we keep you in the loop from the first estimate to final backfill. One review put it simply: Joel is competent, honest, and straightforward, and the job came in at excellent value.
Emergencies do not wait for business hours. We respond to sewer and water emergencies within 24 hours, any day of the week.
On many jobs we can start the same day. For time-sensitive projects, we mobilize quickly so the problem does not get worse while you wait.
Every project is backed by our labor warranty. We stand behind the quality of our work because we want it to be there for the long haul.
Get a real number quickly, with no pressure and no surprises. We come out, assess your site, and give you honest options in plain language.
Digger Construction LLC is a veteran and family owned excavation contractor based in the Black Hills and serving Rapid City and the surrounding communities. Owner and president Joel Williams built the company on a simple idea: the Black Hills deserves an excavation crew that is honest about pricing, clear about the plan, and respectful of the property and people it works for. Whether the job is a residential sewer line, a full septic system, a retaining wall on a steep lot, a snowed-in driveway, or a piece of raw land that needs clearing and grading, we treat it like it is our own.
Digger did a terrific job replacing my old Orangeburg sewer line. I found Joel to be very competent, honest and straightforward, and I think I received an excellent value for my cost.
Roger H.
I had to replace my whole septic system, and from start to finish, Joel did an amazing job! From permits to backfill the job was done way faster than I imagined it would be!
Robin B.
The world needs more people like the owner of this company. He went above and beyond to make sure we were able to access our cabin. He was genuine and easy to communicate with.
Kayla
Digger Construction won Platinum, the top spot for Excavation, in CommunityVotes Rapid City 2026. Thank you to every customer and neighbor who voted for us. See the official results at CommunityVotes Rapid City.
We serve Rapid City and across the Black Hills, including Hill City, Custer, Deadwood, Sturgis, Spearfish, Hot Springs, Black Hawk, Box Elder, Piedmont, and Summerset.
Yes. We offer free same-day estimates. Call or text (605) 389-0863 and we will get you a number quickly.
On many jobs we can start the same day. For emergencies like sewer and water issues, we respond within 24 hours.
Yes. Digger Construction LLC is city and state licensed, fully insured, and OSHA 80 certified.
Yes. When your project involves an insurance claim, we work directly with your insurer to make the process easier on you.
Yes. We provide warranties on our labor because we stand behind the quality of our work.
Ready to get started? Call or text Joel and the Digger Construction crew at (605) 389-0863 for your free same-day estimate, or send a message through our contact page. We are available 24/7 across Rapid City and the Black Hills.