Foundations for backyard accessory units.
An ADU has to fit on a lot that already has a house, a yard, and tight access. We pour the foundation for backyard units and additions where a crew and a pump truck have to thread past a fence and a garden to reach the pour.
Douglas County sits on expansive clay that swells and shifts with moisture, and Castle Rock's elevation means hard freeze-thaw swings. We design driveways, foundations, and flatwork for both. For adu foundations, that local knowledge is exactly what protects your investment. We plan the base, drainage, reinforcement, and finish around the conditions on your Castle Rock property, not a generic detail.
We serve every part of Castle Rock and the surrounding area, including The Meadows, Founders Village, Crystal Valley, Plum Creek, and more. Wherever you are in Douglas County, the crew shows up with the same standard.
At roughly 6,224 feet, Castle Rock gets intense high-altitude sun and a freeze and thaw cycle that is hard on any concrete poured without care. For adu foundations, that means air-entrained mixes, deliberate curing, control joints cut on time, and a base prepared for the expansive clay under your property. It is the difference between work that holds for decades and work that starts failing by the first or second spring.
Access is half the job on an infill ADU. We plan the pour route, protect the existing home and landscaping, and form a clean foundation in the footprint you have, whether that is a slab, a stem wall, or piers.
Site-built, modular, or garage conversion, each one wants a different foundation. We pour to your plans and to Denver-area code, with the drainage and reinforcement the clay soil here demands.
Every Castle Rock job starts with a free, written estimate and a structural engineer on staff for the work that needs one. Licensed, bonded, and insured, with finishes from a clean broom texture to stamped, colored, and sealed.
You always know what is happening and what it costs before we mix a single yard. Here is the path from first call to final walkthrough.
We visit the site, measure, check drainage and soil, and hand you a clear written quote. No charge, no pressure.
We set the grade, thickness, reinforcement, and finish. Structural work gets engineered and permitted.
Forms, rebar, and a clean pour. We screed, float, and finish to the texture you picked, then cut control joints.
You can walk it in 24 to 48 hours. We walk the job with you and explain how to care for it through the first winter.
Still unsure about something?
Call the crew at (303) 569-4046 and we will talk it through.
Get a free, no-obligation estimate from a crew that knows Colorado soil, Colorado weather, and how to finish concrete that lasts.
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