Superior Construction designs and builds custom Accessory Dwelling Units (ADUs) across Commerce City turning garages, basements, and backyards into high-performing living space that generates long-term rental income, increase property values, and put every square foot of your lot to work.
We review your lot, walk you through realistic ADU construction options, and deliver a free site assessment with no pressure.
Fast consultations so you can plan your remodeling project without long wait times.
We create 3D animations for any project, helping you reimagine your home before the work begins.
Enjoy 0% interest in the first 12 months when financing through our fiancing partner.
Our remodeling work is backed by a workmanship warranty for added peace of mind.
An accessory dwelling unit is a fully independent living space built on the same residential lot as your primary structure. In Commerce City, that can mean a detached backyard cottage, a garage-integrated ADU, a basement apartment, or a mother-in-law suite complete with a full kitchen, full bathroom, and independent utilities.
ADUs are regulated under Adams County and Commerce City zoning code, the Land Development Code, and Colorado statewide rules that govern ADU regulations, building permits, and utility connections. Every unit must meet community development standards before construction begins.
Superior Construction is Commerce City’s trusted partner for ADU construction from site analysis through final approvals. If you want a reliable ADU builder that Adams County homeowners can count on, you need more than a crew. You need a team that manages custom ADU plans, zoning code review, structural permits, permit applications, and construction documents from start to finish.
Connect a new living unit directly to your existing home without sacrificing your outdoor space. Attached ADUs share a wall with the primary structure, which keeps construction costs lower while still delivering a fully code-compliant, independent residence with its own entrance.
A detached ADU gives you the most control over your lot. Built as a standalone structure on your property, this option offers complete privacy, a separate address, and a unit that functions like a small custom home. We incorporate energy-efficient systems and LED lighting to keep long-term operating costs low for owners and tenants alike.
A garage conversion or garage-integrated ADU is one of the smartest ways to add living space without starting from the ground up. We handle structural upgrades, insulation, plumbing, electrical, and utility connections to turn an underused storage area into a safe, legal, and livable residence that meets Commerce City building permit requirements.
If your property already has square footage below grade, basement ADU construction may be your fastest path to long-term rental income or multigenerational housing. No new foundation, no added structure. We align the layout, egress, and ADU regulations so the unit is legal, comfortable, and move-in ready.
Our general contractors work with Commerce City zoning laws, Adams County Land Development Code, and city permit requirements every day. We know what gets approved and what stalls, so your project keeps moving.
We are fully licensed residential and commercial general contractors holding a Class C license. Fully insured and bonded, we operate with the compliance and protection Colorado Home Rule and Adams County demand.
One point of contact guides your project from concept through final approvals. Consistent cost control, clear timelines, and regular updates mean you are never left guessing.
After your custom ADU plans are confirmed, you receive a locked scope with a clear cost per square foot. No hidden escalation, no surprise change orders, even on complex construction phases.
We connect qualified homeowners with trusted renovation lending resources, making it practical to fund your ADU construction without draining your savings or delaying your timeline.
We run organized construction phases, maintain clear schedules, and keep you informed at every stage. Building an ADU should feel structured and predictable, and with Superior Construction it does.
Colorado’s statewide rules and Commerce City’s own ADU regulations have made it easier than ever to add a second living space to a residential lot. But most homeowners still run into the same friction: confusion around zoning code, uncertainty about permit applications, and no clear starting point.
That is where a full-service ADU builder changes everything. Superior Construction specializes in residential ADU construction and room additions across Denver metro area. Instead of coordinating designers, city departments, and separate trades yourself, you get one accountable team that handles community development requirements, construction documents, and every construction phase from the ground up.
Not every lot supports every type of ADU. Eligibility depends on your zoning code classification, lot sizes, lot shape, and the footprint of your existing primary structure. The City of Commerce City and Adams County require zoning review, building permit approval, and utility connections sign-off before any ADU construction can begin.
We verify all of this at no charge before you invest in design. Strong ADU candidates typically include:
Before you commit, you should know exactly what comes next. We begin with a full site analysis and zoning evaluation, then develop custom ADU plans, produce construction documents, and manage every permit application through the eTRAKiT portal and city permit offices. Once final approvals are secured, one team carries your build through every construction phase to handoff.
We visit your property, complete a full zoning evaluation, confirm lot sizes and setback requirements, and identify which ADU type fits your lot before any design work begins.
We develop a floor plan built around your goals, your lot shape, and your preferred style. Budget alignment comes before a full scope commitment, so there are no surprises when construction documents are finalized.
We produce complete architectural drawings, structural permits, engineering plans, and permit applications, then guide everything through Commerce City and Adams County review including submission through the eTRAKiT portal.
You confirm your final selections. We sequence every trade, lock the construction phases, and schedule the full build before a shovel touches the ground.
Regular site walk-throughs, a single project manager, and a structured schedule keep your build on track. No chasing trades, no communication gaps, no surprises at billing.
We coordinate city permit and building permit sign-offs, complete the punch list, and walk through every detail with you before handing over a fully permitted, ready-to-occupy accessory dwelling unit.
Commerce City has grown over 223% since 2000 and home values have climbed to nearly $500,000. The city has already identified 18,000 single-family homes eligible for ADU construction to address a documented housing shortage. Adams County’s two-bedroom Fair Market Rent sits at $2,140 per month. The demand is real, the policy supports it, and your lot may already qualify. A custom ADU turns that opportunity into income, equity, and flexibility you keep for life.
However you plan to use it, the right custom ADU gives you options that standard additions often don’t.
Every property is different. Every homeowner’s goals are different. We build ADUs that fit your lot, your budget, and where you are headed.
Need a finished basement, a room addition, or a second story to handle a growing household? We build the space your family actually needs.
The kids are out. Time to convert that extra space into rental income or a guest suite that finally earns its keep.
A ground-floor accessory dwelling unit with wide doorways, a full bathroom, and independent utilities keeps family close without crowding anyone.
A permitted ADU in a Planned Unit Development or single-family lot adds a rentable asset that strengthens your portfolio and increases property values on the same deed.
We serve Commerce City and surrounding communities across the Denver metro and Adams County. If your property is in range, we want to hear from you.
If you want ADU builders Commerce City homeowners can count on, Superior Construction moves you from concept to permitted build with less confusion and more confidence. We help you understand your lot, your options, your construction timeline, and your next step forward.
Yes. Commerce City allows accessory dwelling units on qualifying residential lots, but your property still needs to meet current zoning code, lot size requirements, and permit applications before construction begins. We verify your eligibility at no cost during the feasibility phase.
Yes. A garage-integrated ADU or full garage conversion is one of the most cost-effective paths to adding a legal living space. The unit needs to meet ADU regulations including insulation, egress, plumbing, electrical, and independent utilities before it qualifies for a building permit.
Every ADU construction project requires zoning review, building permit approval through Adams County and city permit offices, and sewer and utility connections sign-off. Projects are typically submitted through the eTRAKiT portal. We manage the full permit application process on your behalf.
