Foresthill, CA — Residential & Commercial
Poured right. Built to outlast the job.

Colossal Concrete pours foundations, flatwork, and decorative concrete across the Sierra foothills — with the kind of finish work that still looks sharp a decade later.

Who we are

A Foresthill crew that treats every pour like it's ours.

Colossal Concrete has been mixing, forming, and finishing concrete across the foothills for over 19 years. We’re a small, local operation — which means the crew that quotes your job is the same crew that shows up to pour it. No subcontracted guesswork, no surprise change orders.

From backyard patios to commercial slabs, we build for the long haul: proper grading, correct mix design, and finish work that holds up to Sierra winters and foothill summers alike

By the Numbers
Local reputation, built one slab at a time.
Slabs Poured
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Years in Business
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Yelp & Google
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Licensed & Insured
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Why Choose us

Real crews. Real mix specs. Real accountability.

Concrete is a perishable product and sometimes volatile. Here’s how we make it right.

Proper Mix Design

Specially designed, high altitude 5000+ PSI mix, durable for any project, purpose or space.

Consistent Pours

We verify and adjust slump on-site

Financing Available

Inform us of your needs and we will accommodate you accordingly.

Transparent Pricing

Clear estimates

Licensed & Insured

Fully licensed and insured concrete contractor

Respect for Your Property

Forms stripped, site cleared, and debris hauled when the job's done — not left for you.

Our Work

Ask your neighbors — there's a good chance we poured their driveway.

Foresthill is a small town. Our name travels on the strength of finished work, not advertising. Check our standing on Yelp and Google before you take our word for it.

What We do

Concrete work, covered end to end.

Residential or commercial, structural or decorative — if it involves forms and a mixer, we handle it.

Foundations & Footings

Structural pours for new builds, additions, and outbuildings — Engineered to spec and inspected.

Driveways & Patios

From standard finishes like broomed to more premium stamped finishes and custom colored. - built to handle traffic and foothill weather

Stamped & Stained Concrete

Custom patterns and color to match stone, brick, or wood — at a fraction of the cost.

Retaining Walls & Flatwork

Sidewalks, slabs, and retaining structures built to hold grade on sloped foothill lots.

Concrete Repair & Restoration

We offer estimates on concrete restorations along with replacing new when possible. This generally saves about 30% or more

Custom Installations

Fire pits, outdoor kitchens, footings for structures — if you can sketch it, we can form it.

Our Work
Let's get your project on the schedule.

Tell us what you’re pouring and we’ll get back to you with a straight answer — usually within a day.

Testimonial

What People Say About Our Work

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julie schweitzer profile picture
julie schweitzer
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Mark is incredible..on time/ reliable..knows his work well..very professional..I would definitely recommend this business!
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Robert Langowski profile picture
Robert Langowski
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Excellent workmanship, my driveway looks immaculate. I would highly recommend his services.
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Jodi Mendonca profile picture
Jodi Mendonca
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A1 5 star services! Mark, the owner, went above and beyond to construct two beautiful stamped patios, two stamped sidewalks and another exposed aggregate sidewalk along with repairs to my exposed aggregate and very steep driveway. He needed to demolish several concrete areas that were causing my garage to flood. He installed drainage pipes to go under the sidewalks so I no longer have flooding in my garage. I cannot say enough wonderful things about Mark and the work he completed. He communicated well and was very clear about the costs. Thank you Mark for everything!! Your work is OUTSTANDING!!
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Katy Parr profile picture
Katy Parr
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Mark and his crew did a great job replacing our old concrete pool deck. They were responsive, flexible and professional and our new pool deck looks fantastic. Highly recommend them.
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Gary Mavko profile picture
Gary Mavko
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Mark came highly recommended by a builder in the north Lake Tahoe area. He designed and built a fantastic set of stairs and landings up to our new house in Olympic (Squaw) Valley. He is an artist and perfectionist. He knows the technical aspects of the right concrete mix, and is an artist implementing his designs. He was very responsive to our requests. Our work is complete just three weeks after our first contact with him. He and his entire crew are extremely friendly and a dream to work with. We couldn't be happier. We're already thinking of our next project for him. I strongly recommend Colossal Concrete.
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Randy Bertrand profile picture
Randy Bertrand
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3 years ago Mark and Company did what we like to call our Big A-- driveway. I got 3 bids for the job, Mark had the best price and highest quality of product. Mark was the only one who took the time draw up some sketches and offer design options to help some money but still give us a great end result.
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Alonda Riley profile picture
Alonda Riley
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They were awesome to deal with friendly above and beyond what we need done! I would highly recommend them. Fast friendly and great work very professional . If you need concrete work done call Colossal concrete you won't be disappointed
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Thomas Weaver profile picture
Thomas Weaver
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I don't like Mark or Jamie very unprofessional
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Patrick Cronican profile picture
Patrick Cronican
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Needed removal of an existing concrete pad. Mark responded to my request for a bid immediately, met me at the project answered all my questions. Mark made sure to keep me up to date when a big rain storm impacted the timeline. I appreciated the responsiveness and communication. Project turned out great. Would highly recommend.
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Gene “INTRUDER” profile picture
Gene “INTRUDER”
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As a hands-on tradesman and general contractor myself, I seldom refer anyone because their work reflects on me. Colossal is among the few local or regionally based businesses that I can refer without hesitation. Beyond quality tradesmanship, my impression of Colossal Concrete is that of a traditional work ethic, and personal integrity.