Excavation Contractor in Broomfield, CO
Excavation for additions, garages, shops and small buildings, plus foundation and basement digs for homes, dug to plan and ready for forms. Bob's crew runs the company's own equipment on every job.
Excavation, done to plan
The dig sets the tone for the whole build. If it's off on depth, square or elevation, every trade after us pays for it. We work from your plans and stakes, check grades as we go, and leave a clean, flat bottom your form crew can start on right away.
BK Builders is locally owned. Bob Knox takes your call and bids the job himself, and his long-time crew does the work on the company's own equipment.
Excavation we handle
- Shop, garage and post-frame building foundations
- Additions and footings for decks, porches and slabs
- General excavation on acreage and rural properties
- Foundation and basement digs for homes
- Spoil management: stockpile on site or haul off
How we work
Before we dig we confirm the plan, the stakes and the utility locates. In Colorado every dig needs an 811 locate request, and we won't break ground until lines are marked. We plan where the spoil goes so it's out of the way for the next crew and ready for backfill.
Who we dig for
Custom home builders, pole-barn and shop builders, small general contractors and property owners who have land and a plan. If you need the site prepped, the utilities trenched or the slab poured after the dig, we can do that too.
Common projects
- Shops and garages: footings and frost walls for detached garages, shops and outbuildings.
- Additions: careful digging next to an existing house, with attention to existing utilities and landscaping.
- Acreage work: general excavation, utility runs and pads on rural properties.
- Home foundations: basement and foundation digs to the plan elevations, including stepped foundations.
Why one crew for the whole site
When the same crew digs, preps, trenches, backfills, grades and pours, nothing falls between the cracks. We know where the utilities went, how the backfill was placed and what the base looks like under the slab, and you have one person to call if something needs attention.
Excavation photos
How excavation works
Plans & locates
We review your plans and stakes, confirm elevations, and make sure the 811 locate is in before any digging.
Set up & strip
Machine and access are set, topsoil is stripped and stockpiled separately from the dig spoil.
Dig to grade
We excavate to the depth and footprint on the plan, checking grade as we go and squaring up the corners.
Clean bottom & hand-off
The bottom is cleaned out, spoil is placed where it won’t get in the way, and the hole is ready for footings and forms.
What affects the cost
Every site is different, so we price after seeing the ground. These are the things that move the number most. Estimates are free.
Size and depth
A deeper basement or larger footprint means more material to move and more machine hours.
Soil and rock
Clay, fill or rock can slow digging and change how the hole needs to be sloped or shored.
Access
Tight lots, slopes, fences or soft ground can limit equipment and add time.
Spoil handling
Keeping dirt on site for backfill is usually less expensive than hauling it away.
Water
Groundwater or a wet season may call for pumping or extra drainage work.
Scope
Combining the dig with site prep, trenching and backfill often costs less than hiring separate crews.
Excavation across the north Denver metro
Based in Broomfield, we take excavation jobs throughout the north and east metro. Not sure if you're in range? Send the address.
- Broomfield
- Westminster
- Thornton
- Northglenn
- Arvada
- Louisville
- Lafayette
- Longmont
- Commerce City
- Bennett
- Keenesburg
Related services
FAQ
How much does foundation excavation cost in Broomfield?
It depends on the size and depth of the dig, soil conditions, site access and whether spoil stays on site or gets hauled off. We give you a clear, itemized price after a site walk. Estimates are free.
Do you call 811 before digging?
Yes. Colorado law requires an 811 locate before excavation. We confirm marked utilities before any digging starts.
Can you do the backfill and final grade after the foundation is in?
Yes. We handle backfill in lifts, compaction and final grade around the finished structure, so one crew covers the site start to finish.
What areas do you serve for excavation?
We are based in Broomfield and work across the north and east Denver metro, including Westminster, Thornton, Northglenn, Arvada, Louisville, Lafayette, Longmont, Commerce City, Bennett and Keenesburg.
How long does a foundation dig take?
Most residential foundation digs take a day or a few days, depending on size, depth, soil and access. We’ll give you a realistic timeline with your bid.
Do I need a permit for excavation?
Permits are usually tied to the overall building project and handled by the owner or general contractor. Check with your local building department; we can coordinate with whoever holds the permit.
What happens to the dirt from the dig?
Good fill is typically stockpiled on site for backfill and grading. Extra or unsuitable material can be hauled off.
Get your site build-ready.
Send the project details and we’ll follow up to talk through the site, usually the same day.