
Excavation & Site Prep in Longmont, CO
Building pads, driveways and site work on larger lots and acreage north of the metro.
Site work on larger lots around Longmont
Longmont is the north end of our service area, and a lot of the work here is on bigger properties: acreage and large lots where there is room for a shop, a barn or a long driveway.
On those properties we cut and compact building pads, build driveways from the road to the build site, grade the site so water moves where it should, and trench utilities across the property.
What we do in Longmont
- Site Prep & Building Pads
- Grading & Final Grade
- Utility Trenching
- Excavation & Foundation Digs
- Concrete Slabs & Flatwork
Driveways on acreage
A long driveway needs a solid, compacted base, a crown or cross slope to shed water, and drainage at low points. Getting the subgrade right is what keeps it from rutting and washing out.
Permits and locates around Longmont
Longmont is mostly in Boulder County, with parts in Weld County. Properties inside city limits are permitted through the City of Longmont; acreage outside town falls under the county. We call in Colorado 811 locates before digging.

Photos from BK Builders projects



Serving all of Longmont
We take projects across Longmont and the surrounding area in Boulder and Weld counties, including:
- Old Town Longmont
- Prospect New Town
- St. Vrain River area
- Union Reservoir area
- Acreage east of town
Nearby towns we serve
What BK Builders customers say
“We have worked with Bob from BK Builders for years and they have always been great to work with! We have used them for concrete work, remodeling projects and complete outbuilding/shop builds.”
“Bob and BK Builders have been my trusted source for excavation and concrete for over a decade now.”
BK Builders is rated 5.0 on Google. Read all reviews.
Longmont FAQ
Do you work on acreage outside Longmont city limits?
Yes. Larger lots and acreage around Longmont are a big part of our work up here.
Can you build a driveway to a new building site?
Yes. We build driveways with a compacted base and grading so water sheds off them.
Can you prep a pad for a shop or barn?
Yes. Building pads for shops, barns and post-frame buildings are core work for us.
How do I get an estimate?
Call (720) 303-5621 or use the estimate form. A site address or map pin helps on acreage.
Planning a project in Longmont?
Send us the plans or a few photos of the site and we will get you a clear, honest estimate for the ground work.