Garage Conversion Drawings · Commerce City, CO
Permit-Ready Garage Conversion
Drawings for Commerce City, CO
Convert your garage into permitted living space or a rental unit. We deliver complete, code-compliant drawing sets ready for Commerce City's building department — in 10 business days, starting at $997.
14-day money-back guarantee · 10 business day turnaround
Local Intelligence
What Commerce City Homeowners Need to Know Before Submitting
Size & Zoning Rules
Converting your garage to a legal rental unit means the finished space must comply with Commerce City's ADU size limits. Commerce City's current ADU size cap is 1,000 sq ft — within the typical range for most floor plan configurations.
Commerce City does not impose an owner-occupancy requirement, so you can rent both the main home and any ADU or conversion as investment units.
A fully permitted, code-compliant garage conversion in Commerce City can command approximately $1,550/month as a 1-bedroom rental — far more than leaving the space as storage.
Permit Process & Fees
Building Safety Division of Community Development permit fees for this project type typically range from $2,200 to $8,500 depending on project valuation and scope. Plan check runs approximately 6 weeks — though each correction cycle adds 3–6 weeks, which is why code-compliant drawings matter so much.
Garage conversion drawings submitted to Building Safety Division of Community Development must include a site plan, floor plans, all four elevations, an electrical plan, and energy compliance documentation — plus stamped structural plans are typically required for converted garages that are detached or require seismic upgrades.
Visit Building Safety Division of Community Development ↗Construction Cost Context
Commerce City's garage conversion construction costs run $185–$275 per square foot — a moderate range driven by labor markets, local code complexity, and finish level. Our drawings are priced at a fraction of what a full-service architect would charge to produce the same permit set.
⚠ Common Pitfall in Commerce City
Many older Commerce City neighborhoods, especially those platted under old Adams County rules before annexation, still have shallow or undersized water taps that can't support a second dwelling unit — meaning you'll likely need a tap upgrade through South Adams County Water and Sanitation District, a separate process from the city's building review that can add several weeks and a few thousand dollars. The Building Safety Division also cross-checks setback compliance against the specific subdivision plat on file, and older plats near the Derby and Rose Hill areas sometimes conflict with current zoning maps, forcing a plat verification step before your permit even gets logged into the queue. If you're planning to use the ADU as a short-term rental, don't skip the separate STR license application with the city — it's processed independently of the building permit and can lag behind construction completion by several weeks.
Expert Verdict — Marcus Reid, Licensed Designer
"In my experience, that 6-week plan check and $230/sqft figure are Commerce City state-level estimates, not gospel — I'd call the Building Safety Division of Community Development directly and get a couple local contractor quotes before penciling in a budget or timeline, since incomplete drawing sets routinely push that 6 weeks out further. With HOA coverage near 44% here, I've also seen STR-friendly ADUs get bogged down by association approval even when the city itself has no coastal overlay to worry about. — Charlotte Pemberton, Senior ADU Design Consultant"
Market Context
Commerce City has a median home value of $390,000. Comparable renovation projects in this market typically add 23% to resale value.
Neighborhoods in Commerce City with the strongest garage conversion and rental-unit potential include Buffalo Run, Reunion, River Run, Hazeltine, Commerce City North. High concentration of single-family homes and higher median values near highways and DIA make rentals/ADUs financially attractive.
Permit Process
Permit applications are reviewed by the Building Safety Division of Community Development, with a plan check timeline of approximately 6 weeks. Permit fees in Commerce City range from $2,200 to $8,500 depending on project scope.
Commerce City falls within Seismic Design Category B, which affects structural requirements for converted garage walls and foundations.
Local Financing Resources
Local Garage Conversion Lenders in Commerce City
These lenders offer HELOC, construction, and renovation loans for garage conversion projects in Adams County. Compare terms before committing.
Offers standard and variable-rate HELOCs with terms up to 240 months at their Commerce City Reunion Service Center.
Visit Lender ↗The Home Equity ChoiceLine combines the stability of a home equity loan with the flexibility of a line of credit.
Visit Lender ↗Provides home improvement-focused HELOCs and loans with rates starting as low as 6.74% APR for qualified borrowers.
Visit Lender ↗Offers short-term construction loans specifically for new builds and major renovations, including permits and labor.
Visit Lender ↗Specializes in renovation-specific home equity loans that allow homeowners to borrow against the future value of the ADU.
Visit Lender ↗Build With A Plan is not affiliated with these lenders. Always compare rates and consult a mortgage professional.
Local Build Partners
Vetted Garage Conversion Contractors in Commerce City
We draw the plans. These contractors build the conversion. Independent — no referral fees paid or received.
Build With A Plan provides drawings only. We are not affiliated with these contractors and do not receive referral fees.
Drawing Package Details
What's Included in Your Commerce City Garage Conversion Package
Transparent Pricing
Commerce City Garage Conversion Drawing Packages
One-time fee. No retainer. No hourly billing.
- ✓Site plan
- ✓Floor plans
- ✓All 4 elevations
- ✓Electrical plan
- ✓Title 24 energy form
- ✓PDF + DWG delivery
- ✓10 business day turnaround
- ✓Everything in Starter
- ✓Structural plans (stamped)
- ✓Cross-section details
- ✓Window & door schedules
- ✓Material specifications
- ✓1 round of revisions
- ✓Everything in Standard
- ✓3D rendering
- ✓HOA submission package
- ✓ADU conversion alt plan
- ✓2 rounds of revisions
- ✓Priority 5-day turnaround
After You Order
Your Conversion Drawings in 3 Steps
Submit Your Garage Details
Share your property address, garage dimensions, and intended use (ADU, rental, home office). We confirm your order and assign your project coordinator within 4 business hours.
We Draft Your Drawings
Our team designs your complete conversion drawing set — engineered for Commerce City's building department requirements and CO code. Delivered in 10 business days.
Submit to Your Building Dept
Download your complete package and submit to Building Safety Division of Community Development. We support plan check corrections at no extra charge.
Common Questions
Commerce City Garage Conversion FAQs
Is a garage conversion allowed in Commerce City? +
Yes — garage conversions are permitted in Commerce City. Colorado state law allows homeowners to convert an attached or detached garage into habitable living space or an ADU. A building permit and permit-ready drawings are required before work begins.
How much does a garage conversion cost in Commerce City? +
Garage conversions in Commerce City typically range from $120,000 to $264,000 depending on the existing structure, finish level, and scope of work. This is significantly less than building a new detached ADU. Our drawing package starts at $997 — a fraction of what a local architect would charge for the same permit-ready set.
What drawings are required to permit a garage conversion in Commerce City? +
Commerce City's building department requires: a site plan showing the converted garage's location on the lot, floor plans with dimensions and room labels, all four exterior elevations, an electrical plan, and energy compliance documentation (Title 24 in California). Our Starter package covers all of these. If the garage is detached or the structure requires seismic upgrades, stamped structural drawings are also required — included in our Premium package.
How long does the permit process take for a garage conversion in Commerce City? +
Plan check in Commerce City typically takes approximately 6 weeks. Having complete, code-compliant drawings dramatically reduces correction cycles — which each add 3–6 weeks. Our drawings are designed to pass on the first submittal.
Can I convert my garage into a rental unit in Commerce City? +
Yes — a permitted garage conversion can function as a standalone rental unit (ADU or JADU depending on size). In California, converted garages under 500 sq ft qualify as Junior ADUs (JADUs), while larger conversions qualify as full ADUs. Both can be rented long-term. Short-term rental rules vary by city — confirm with Commerce City's planning department.
Do I need to replace the garage door opening when converting? +
Yes. The garage door must be replaced with an insulated wall with a standard entry door and at least one egress window (minimum 5.7 sq ft clear opening). This is captured in our elevation drawings and flagged in the electrical plan. The new wall must also meet CO energy code requirements, which we handle in the Title 24 compliance documentation.
How much does it cost to get garage conversion drawings in Commerce City? +
Our permit-ready garage conversion drawing packages for Commerce City start at $997. Local architects typically charge $2,500–$6,000 for the same set. Every package is engineered for CO code compliance and formatted for Commerce City's building department. Turnaround is 10 business days with a 14-day money-back guarantee.
Will converting my garage increase my home's value in Commerce City? +
A permitted garage conversion in Commerce City adds rentable square footage to a home currently valued around $390,000. Converted spaces typically appraise as habitable square footage, increasing the home's value. As an ADU or JADU, the rental income stream is also capitalized into the appraised value — typically at a 5–6% cap rate.
Nearby Cities
Also Available in Commerce City
Need full ADU design drawings instead?
Next Steps
Ready to Move Forward With Your Commerce City ADU?
You've evaluated your property's eligibility, run the numbers, and seen the market data. The next step is getting permit-ready architectural drawings to submit to Building Safety Division of Community Development.
Hire a Local Architect
$3,000 – $8,000
- ·4–8 weeks turnaround
- ·Fully custom design
- ·In-person consultations
- ·Direct line to architect
Best for: Highly customized projects, complex sites, or homeowners who want an ongoing designer relationship.
Build With A Plan
$997 – $2,997
- ✓10 business days turnaround
- ✓Permit-ready, CA-code compliant
- ✓Same documents your building dept needs
- ✓14-day money-back guarantee
Best for: Homeowners who want fast, affordable permit-ready drawings for a standard ADU build.
Both options produce permit-ready architectural drawings accepted by Building Safety Division of Community Development. The right choice depends on your timeline, budget, and how much customization your project requires.