About Our Excavation Company in Caldwell, ID

About Ultimate Excavation LLC

At Ultimate Excavation LLC, we take pride in providing dependable excavation and earthwork services throughout Boise and the surrounding Treasure Valley. From residential projects to commercial construction, we bring a commitment to quality workmanship, honest service, and getting the job done right. Whether it's site preparation, grading, trenching, utility excavation, or septic and pool excavation, our goal is to make sure every project starts with a solid foundation. We work hard to deliver efficient, reliable results our customers can count on.

Crew member walking toward an excavator at a home site at golden hour

Our story

Started in 2023, built from the ground up.

This locally owned business launched in 2023, when Tanner Owens and his wife started Ultimate Excavation LLC in Caldwell, Idaho.

What matters most to us is how a job feels from the customer's side. Our reviews say the same things again and again: Tanner answers quickly, gets a bid out fast, explains the work in plain terms and shows up on time.

Today the crew handles site preparation and grading, trenching, water, sewer and utility lines, septic systems, drainage and pool excavation for homeowners and businesses across the Boise metro area and the Treasure Valley.

We are still locally owned and operated, and still based in Caldwell.

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Locally owned & operatedBased in Caldwell, Idaho
5.0 on GoogleFrom 25 customer reviews
Idaho registered contractorLicense RCE-65836

Award

2026 Gold Standard Preferred Contractor

Ultimate Excavation LLC is a 2026 Gold Standard Preferred Contractor by Fierce Island.

To be listed, a contractor has to meet every criterion: at least a 4.8 average rating across at least 20 Google reviews, no unresolved Better Business Bureau issues, and a new review in the last three months.

See the Gold Standard list

What Our Customers Say

Rated 5.0 out of 5 from 25 Google reviews.

25 five-star reviews

Read All Reviews on Google→

We've worked with these guys on several pool forming and excavation projects. They're on time, work hard, and do great work. Would recommend to other builders!
Cassi G.
Our main water line burst and I had no idea who to call to fix this problem. Thankfully Tanner at Ultimate Excavation came to save the day!! He gave me three different quote options and explained everything in detail. Very knowledgeable and professional. They were able to start the project immediately! 10/10 recommend.
Sajra I.
Tanner and his crew do a fantastic job digging pools for us. Always flexible with schedule, professional, and great communication. He also dug and installed a septic system for me and did a great job and at a great price! Our entire team highly recommends using ultimate excavation, you won’t be disappointed!
Stanley M.
Tanner and his crew put in a stone block retaining wall and drainage around our home. They were timely, professional, and paid attention to all the small details. We are very happy with the work and will use them again!
Steve G.
Tanner and his whole crew was so great to deal with! Tanner has great communication, got us a bid quickly and was able to get to our job well before the rains came which we really appreciated!
Kendra Z.
Such a great company to work with. The owners are solid people, the quality of work is top-notch, and they genuinely care about their customers and the end result. They get the job done right.
Sara V.
Highest of recommendations! These guys did a great job and it was done in a timely manner. Tanner’s communication was spot on and he was awesome and easy to work with. We’re pleased with how the job turned out. Thank you!
Taylor A.
Tanner And crew are knowledgable, respectful and budget friendly with the upmost respect for you and your property. Great for earthwork services on your projects.
Justin M.
This is hands down the best company to hire. Tanner is a hard worker, and will make sure all his clients are well taken care of. If you want a great project outcome that’s done correctly and efficiently, he is your guy.
Taneya P.
On a recent project, Ultimate Excavation was so professional, efficient and highly skilled. Tanner and his crew value communication and arrive on time.
Kathy P.
Great company. Tanner was on time and didn’t mess around. He did an amazing job and would highly recommend him for any job small of large
Anthony F.
Tanner is great to work with. Punctual and efficient. Definitely a go to guy!!
Bryler E.
Would recommend Tanner any day! Very professional and easy to work with.
Clint & Cassi D.
Very great work done in a timely manner! These guys are very hard workers!
Lacee O.
Hard worker’s that do a great job for a fair price
Brandon O.
Very great work and a man of his word
Masen P.
Ultimate Excavation does Amazing work. 11/10 recommend!!
Phoenix S.
Great company with great employees. Would recommend.
Dallas

We've worked with these guys on several pool forming and excavation projects. They're on time, work hard, and do great work. Would recommend to other builders!
Cassi G.
Our main water line burst and I had no idea who to call to fix this problem. Thankfully Tanner at Ultimate Excavation came to save the day!! He gave me three different quote options and explained everything in detail. Very knowledgeable and professional. They were able to start the project immediately! 10/10 recommend.
Sajra I.
Tanner and his crew do a fantastic job digging pools for us. Always flexible with schedule, professional, and great communication. He also dug and installed a septic system for me and did a great job and at a great price! Our entire team highly recommends using ultimate excavation, you won’t be disappointed!
Stanley M.
Tanner and his crew put in a stone block retaining wall and drainage around our home. They were timely, professional, and paid attention to all the small details. We are very happy with the work and will use them again!
Steve G.
Tanner and his whole crew was so great to deal with! Tanner has great communication, got us a bid quickly and was able to get to our job well before the rains came which we really appreciated!
Kendra Z.
Such a great company to work with. The owners are solid people, the quality of work is top-notch, and they genuinely care about their customers and the end result. They get the job done right.
Sara V.
Highest of recommendations! These guys did a great job and it was done in a timely manner. Tanner’s communication was spot on and he was awesome and easy to work with. We’re pleased with how the job turned out. Thank you!
Taylor A.
Tanner And crew are knowledgable, respectful and budget friendly with the upmost respect for you and your property. Great for earthwork services on your projects.
Justin M.
This is hands down the best company to hire. Tanner is a hard worker, and will make sure all his clients are well taken care of. If you want a great project outcome that’s done correctly and efficiently, he is your guy.
Taneya P.
On a recent project, Ultimate Excavation was so professional, efficient and highly skilled. Tanner and his crew value communication and arrive on time.
Kathy P.
Great company. Tanner was on time and didn’t mess around. He did an amazing job and would highly recommend him for any job small of large
Anthony F.
Tanner is great to work with. Punctual and efficient. Definitely a go to guy!!
Bryler E.
Would recommend Tanner any day! Very professional and easy to work with.
Clint & Cassi D.
Very great work done in a timely manner! These guys are very hard workers!
Lacee O.
Hard worker’s that do a great job for a fair price
Brandon O.
Very great work and a man of his word
Masen P.
Ultimate Excavation does Amazing work. 11/10 recommend!!
Phoenix S.
Great company with great employees. Would recommend.
Dallas