Studio Home is a Colorado-based prefab ADU builder serving all 50 states. With 18+ years experience and 6,000+ projects, they offer panelized ADU kits, backyard studios, granny flats, and in-law suites with fixed pricing and full project management.
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Sheffield Homes, founded in 1978, is a trusted Colorado custom home builder offering fully personalized builds since 2018. Services include basement finishing, luxury finishes, energy upgrades, and flexible floor plans, backed by decades of quality craftsmanship.
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O'Brien Construction LLC is an ADU contractor specializing in design, engineering, and construction of accessory dwelling units. Services include detached ADUs, additions, and design-assisted builds, with free consultations available.
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Henze Construction builds custom tiny homes and ADUs, including detached units, backyard cottages, and granny flats. Their 240 sq ft Architectural Tiny Home featured spruce wood, oak countertops, and propane systems. Custom builds available.
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ADU 5280 is a Denver-based ADU design-build company since 2013, offering detached ADUs, garage conversions & home additions. They manage zoning, permits, design & construction for homeowners looking to boost property value.
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Sustainable Design Build is Denver's premier ADU builder and contractor, using design-build for accessory dwelling units, garage conversions, in-law suites, backyard cottages, granny flats, and detached ADUs. Benefits: single contract, faster timelines, cost efficiency, fixed pricing. Experts in local zoning since 2017.
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Prestige Contractors builds ADUs in Castle Rock & Douglas County with 20+ years of experience. Services include detached units, garage conversions, above-garage ADUs & attached additions. Fully permit-managed & code-compliant.
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Live Dream Colorado helps Colorado Springs property owners build ADUs—detached backyard cottages or attached in-law suites. Key factors include zoning, lot size, setbacks, and owner-occupancy rules. LDC guides clients through planning and construction.
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ADUs are self-contained units like garage apartments or granny flats built on existing properties. In Denver, ALH Contracting helps homeowners build ADUs for rental income, family housing, or added property value.
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Evans Construction LLC is a Colorado Springs ADU builder offering attached, detached, and garage conversion ADUs. Services include design, permitting, and construction, helping homeowners add rental income, multigenerational living, or guest space.
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Rescue Restoration specializes in constructing Additional Dwelling Units (ADUs) in Colorado. Their lead chief estimator can help design a custom ADU to fit your needs and financial goals. They are the lead resource in the Denver Metro area when it comes to constructing attached, detached, or basement ADUs.
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ModernSpace ADU Construction is a trusted ADU builder in Corona with 20+ years of experience. They offer detached ADUs, garage conversions, JADUs, attached additions, and full design services including permits and 3D renderings.
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ADU4U is a veteran-owned ADU builder in Denver offering full-service accessory dwelling unit construction, planning, real estate, and financing. Build a granny flat, in-law suite, or detached ADU for rental income or multigenerational living.
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Giudice Builds is a Colorado Springs ADU contractor specializing in accessory dwelling units. Projects range from $250K–$400K+, with planning from $5K. A recent 640 sq ft ADU was completed in 6.5 months for $230K.
read moreCastle Rock, Colorado, is one of the fastest-growing cities in the state, situated between Denver and Colorado Springs along the I-25 corridor. This rapid growth has driven significant demand for Accessory Dwelling Units (ADUs), as homeowners look for ways to add housing options, generate rental income, or accommodate multigenerational families. Working with experienced ADU contractors in Castle Rock is essential to navigating the town's specific zoning codes, building regulations, and design standards that reflect the community's commitment to maintaining its unique character.
The Town of Castle Rock has specific rules governing ADU construction that homeowners and contractors must follow carefully. ADUs are generally permitted in single-family residential zones, but there are important restrictions to be aware of:
Because Castle Rock's municipal code is regularly updated to reflect the town's growth, it is critical to work with a licensed ADU contractor familiar with local Castle Rock building permits and the Town's Community Development Department requirements.
Skilled ADU builders in Castle Rock, CO can construct several types of accessory dwelling units depending on your property layout and goals:
Hiring a local ADU contractor in Castle Rock offers distinct advantages. Local professionals understand the Douglas County and Town of Castle Rock permitting processes, are familiar with HOA restrictions common in Castle Rock's many planned communities, and know the regional climate considerations — including snow load requirements and foundation needs specific to the Colorado Front Range. A knowledgeable contractor will manage everything from design and permitting to construction and final inspection, ensuring your ADU project is completed efficiently and in full compliance with all local regulations.