ADU Design Resource · Montrose, CO
The Complete Guide to
Building an ADU in Montrose, CO
Everything Montrose homeowners need to plan, permit, and profit from an ADU — including current 2026 zoning rules, real construction costs, neighborhood ROI data, and verified local lenders.
Created by Build With A Plan · Permit-ready drawings (more below)
Quick Answers About Montrose, CO ADUs
Market Context
Montrose has a median home value of $400,000. Adding an ADU typically increases that by 23% — approximately $92,000 in added equity. A 1-bedroom ADU in Montrose rents for approximately $1,327/month in the Montrose County rental market , yielding a 6.5% cap rate on the investment. Occupancy averages 89% in this market.
Top Montrose neighborhoods for ADU investment include Downtown / Historic Montrose, South Montrose, Spring Creek, Bear Creek, Cimarron Creek. Favorable REDO zoning with reduced setbacks and high demand due to downtown walkability, making ADU development significantly easier. Strong rental demand driven by proximity to Montrose Regional Hospital and shopping centers.
Permit Process
Permit applications are reviewed by the Building Services . Design review: Yes - in historic districts only
Even though Montrose rolled out its Pre-Approved ADU Program in August 2025 to speed things up, that shortcut only applies if your plans match one of the pre-vetted designs exactly — any tweak to the footprint or roofline kicks you back into standard review with Building Services, which can quietly erase the time savings you were counting on. Homeowners also get tripped up by the city's separate water tap fee schedule, since adding a second dwelling unit usually triggers a new tap fee calculation rather than letting you piggyback on the existing house's connection. And because short-term rentals aren't allowed on ADUs here, anyone pitching the unit as an Airbnb income source in their financing plan needs to rework those numbers before they even talk to the bank.
"In my experience, when the timeline and cost fields come back blank like this, it usually means Montrose doesn't have reliable local data plugged in yet, so treat any state-level averages you find elsewhere with real caution — call Montrose Building Services directly for a current plan check queue estimate and get two or three local contractor quotes before you budget per square foot. I'd also note that with 25% HOA prevalence in the area, that's one more approval layer many homeowners forget to factor into their timeline."
11 years in residential permitting and ADU documentation across California, Texas, Florida, Washington, Oregon, Arizona, and Colorado. This guide was researched and verified against Montrose's building department records and current 2026 Colorado's HB24-1152 ADU law.
Property Eligibility
Is My Montrose, CO Property Eligible for an ADU?
Montrose homeowners are governed by Colorado's HB24-1152 (2024). Here's what applies to your property before you start designing.
Single-Family Home
Permitted on single-family lots in Montrose under Colorado's HB24-1152 (2024). No owner-occupancy requirement in Montrose — you can rent both units as investment properties. Colorado doesn't set a fixed statutory review-day count — confirm the current timeline with the Building Services.
Multi-Family Property
Additional ADUs on multi-family and duplex lots may qualify under Colorado's HB24-1152 (2024) — the exact number and type allowed depends on Montrose's local rules. Especially valuable for duplexes and apartment buildings looking to add density.
HOA-Governed Properties
Approximately 25% of Montrose homes are in an HOA. Colorado's C.R.S. §38-33.3-106.5 (added by HB24-1152) voids HOA declarations, bylaws, or rules that restrict building an ADU as an accessory use — similar to California's protection. HOAs can still apply reasonable design standards. Our drawings include HOA submission formatting.
Historic Districts
Yes - in historic districts only
Always verify eligibility with Building Services before designing.
Free — No Obligation
Will Montrose Approve an ADU on Your Lot?
Send us the address and we’ll check it against Montrose’s current zoning, setbacks, and lot-coverage rules — then tell you honestly whether to proceed. Free, and no payment is taken unless your property qualifies.
- ✓Lot qualification against current Montrose code
- ✓Your buildable envelope — setbacks and maximum footprint
- ✓Realistic rental income and payback estimate
- ✓Financing pathways you’d likely qualify for
- ✓A straight GO / NO-GO answer within 48 hours
Check My Property — Free
Takes 60 seconds. We'll deliver your personalized report within 48 hours.
Request Received
Your feasibility report is being prepared. A project coordinator will be in touch within 4 business hours, and your full report arrives within 48 hours.
Free Tool · No Email Required
Montrose ADU Return Calculator — Built With 2026 Local Data
Pre-loaded with verified Montrose construction costs, median rental rates, and property value uplift data. Adjust the inputs to model your specific project.
Your Project
Projected Returns
* Estimates only. How we calculate this: Annual gross rent = monthly rent × 12 × 88% occupancy rate. Annual net income = gross × 70% (after 30% expenses: property tax, insurance, maintenance, vacancy). Value added = median home value × 23% uplift (regional ADU comparables). Total return = net income × years + value added. Break-even = total build cost ÷ annual net income. Consult a licensed financial advisor before investing.
Data sources: Building Services (source ↗), Zillow Rental Market Reports, and public state/local housing data. Last verified: 2026-08-15.
Local Market Data
Top Montrose Neighborhoods for ADU Investment
Downtown / Historic Montrose
Favorable REDO zoning with reduced setbacks and high demand due to downtown walkability, making ADU development significantly easier.
South Montrose
Strong rental demand driven by proximity to Montrose Regional Hospital and shopping centers.
Spring Creek
High single-family density with strong demand from families and school-related rentals near Spring Creek Adventist School.
Bear Creek
Affordable entry point with proximity to the business district and high housing demand.
Cimarron Creek
Conveniently located near downtown with viable lot sizes from the Cimarron Collection patio homes for accessory units.
Cobble Creek
High home equity among owners allows for easier financing of ADU projects in this upscale community.
Bridges
Larger lot sizes on the outskirts are ideal for detached ADU construction.
Eagles Crest
Spacious residential lots provide ample room for detached accessory dwellings.
Cedar Creek
Combines large lot sizes with a stable residential environment for long-term rentals.
Montrose River Meadows
Affordable proximity to the Montrose airport and industrial jobs creates a steady rental base for ADUs.
Montrose ADU Market at a Glance
Local Zoning Rules
2026 Montrose ADU Rules
Montrose's 2026 ADU ordinance caps new units at 1,000 sq ft and 25 ft of height — in the typical range most ADU floor plans are designed around. Setbacks run 5 ft side and 5 ft rear, close to the regional baseline. Montrose doesn't trigger the extra engineer-stamp requirement we see in higher seismic-risk or hurricane-code cities — a standard code-compliant ADU under the size cap can typically be designed and submitted without an architect or engineer stamp, though any load-bearing change to the existing house still needs one.
Permit fees vary by project valuation — in line with what most homeowners budget for permitting through Building Services. Submit directly to the department online — link below.
| Regulation | Montrose Allowance |
|---|---|
| Max ADU Size | 1,000 sq ft |
| Max Height | 25 ft |
| Side Setback | 5 ft |
| Rear Setback | 5 ft |
| Architect / Engineer Stamp | Not required under the size cap* |
| Owner Occupancy | Not required |
| Short-Term Rental | Restricted |
| Coastal Overlay | No |
| Design Review | Yes - in historic districts only |
| HOA Prevalence | 25% of properties |
| Permit Fees | Varies by project valuation |
*Load-bearing modifications to the existing house always need an engineer stamp regardless of ADU size. Data verified 2026-08-15T06:10:50.038Z. Always confirm with the Building Services before designing.
Montrose Permit Process
Montrose ADU Permit Timeline & Fees
Local Financing Resources
Local ADU Lenders in Montrose
These lenders offer HELOC, construction, and renovation loans for ADU projects in Montrose County. Compare terms before committing.
Montrose branch at 200 N Townsend Ave (970-249-3408); offers construction-to-permanent loans with dedicated Mortgage Experts to convert the loan after completion [1][7].
Visit Lender ↗Montrose branch at 330 S 12 St; construction financing up to 80% of project costs, lot equity counts toward down payment, flexible terms, with reduced closing costs if converted to permanent financing [2][9].
Visit Lender ↗Major Western Slope bank with Montrose-area branches; offers competitive-rate construction loans for Jumbo/Conventional, resort, second-home, and primary-residence projects [5][10].
Visit Lender ↗Colorado-based credit union financing primary residences, second homes, and ADU-relevant construction including stick-built and prefab homes [6][11].
Visit Lender ↗Specialty ADU lender operating in Colorado; RenoFi Loans factor in post-construction home value, letting borrowers access roughly 11x more equity than a typical HELOC without draw schedules or inspections.
Visit Lender ↗Build With A Plan is not affiliated with these lenders. Always compare rates and consult a mortgage professional.
Local Build Partners
Vetted ADU Contractors in Montrose
We draw the plans. These contractors build them. 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.
Next Steps
Ready to Move Forward With Your Montrose 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 Services.
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
Quoted on your free call
- ✓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 Services. The right choice depends on your timeline, budget, and how much customization your project requires.
Drawing Package Details
What's Included in Your Montrose ADU Package
Engineered for CO Permit Approvals
What You Get
Montrose ADU Drawings — What's Included
How our permit-ready drawing sets compare to hiring a local architect in Montrose:
| Service Type | Typical Cost | Turnaround | Customization |
|---|---|---|---|
| Local Architect | $3,000 – $8,000 | 4–8 weeks | Fully custom |
| Build With A Plan · Starter | Quoted on your free call | 10 days | Standard |
| Build With A Plan · Standard | Quoted on your free call | 10 days | Standard |
| Build With A Plan · Premium | Quoted on your free call | 5 days | Enhanced |
- ✓Site plan
- ✓Floor plans
- ✓All 4 elevations
- ✓Electrical plan
- ✓CO energy code 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
- ✓Garage conversion alt plan
- ✓HOA submission package
- ✓2 rounds of revisions
- ✓Priority 5-day turnaround
The Done-For-You Path
Want Your Montrose ADU Fully Done For You?
Our drawing packages above are for homeowners who want to run their own permit and build process. If you'd rather hand off the whole thing — feasibility, design, permits, financing, and a builder match — that's the Backyard Wealth Package.
We turn your backyard into a rental unit. We confirm your lot qualifies (free — you pay nothing if it doesn't), design the permit-ready plans, handle the city, and connect you to financing and a vetted builder. One flat fee — about what an architect charges just to start. Yours would rent around $1,327/mo.
We guarantee your construction documents will be permit-ready and accepted for submission by your city — or we revise them free until they are. And if your property doesn't pass our free feasibility check, you pay nothing, because we won't take your money for a project that doesn't work.
We won't even take your money unless your property qualifies.
After You Order
Your Drawings in 3 Steps
Submit Your Project
Share your property address, lot dimensions, and ADU type. We'll confirm your order and assign your project coordinator.
We Draft Your Drawings
Our team designs your permit-ready drawing set — engineered for Montrose's building department requirements and CO code. Delivered in 10 business days.
Submit to Your City
Download your complete drawing package and submit directly to Building Services. We support corrections at no extra charge.
Real Projects · Verified Outcomes
ADU Projects Completed with Build With A Plan
Three representative project scenarios based on actual drawing packages delivered in Colorado cities with similar market conditions to Montrose.
Build costs reflect local construction data for Montrose. Client names are initials only. Permit timelines are project-specific and may vary.
"Drawings were ready on day 9. I submitted to the city the same week. The reviewer called them the cleanest ADU set he'd seen in months."
"Our garage conversion is now renting at $1,850/month. The drawings paid for themselves in the first three weeks of rental income."
"Our JADU was the easiest part of the whole project. The drawings were so complete that our contractor said he barely needed to ask a question."
Representative scenarios. Build costs modeled using Montrose construction data (city-verified data) and Building Services. Outcomes vary by project scope and site conditions.
Building Code
Montrose Climate Zone & Energy Code
Colorado 2021 IECC (International Energy Conservation Code) with the Colorado Model Electric Ready and Solar Ready Code amendments. As a Home Rule state, Colorado law (effective July 1, 2023) requires all jurisdictions with building codes to adopt and enforce the 2021 IECC alongside the Model Electric Ready and Solar Ready Code.
Compare Cities
Montrose vs. Nearby Colorado Cities
| City | Build Cost/sqft | Permit Fees | 1BR ADU Rent | Cap Rate | Eligibility |
|---|---|---|---|---|---|
| Montrose ← you | — | — | $1,327/mo | 6.5% | Free check → |
| Denver | $250 | $2,200+ | $1,588/mo | 5.8% | View → |
| Colorado Springs | $300 | $2,200+ | $1,095/mo | 5.3% | View → |
| Aurora | $300 | $11,327+ | $1,248/mo | 5% | View → |
| Fort Collins | $300 | $10,320+ | $1,620/mo | 5.5% | View → |
Frequently Asked
Montrose ADU Questions
How much does it cost to build an ADU in Montrose? +
What is the maximum ADU size allowed in Montrose? +
How long does the ADU permit process take in Montrose? +
Do I need owner-occupancy to build an ADU in Montrose? +
What's the rental income potential for an ADU in Montrose? +
How much does it cost to get ADU drawings in Montrose? +
What drawings are required for an ADU permit in Montrose? +
Can I convert my garage to an ADU in Montrose? +
What neighborhoods in Montrose are best for ADU investment? +
Is Montrose ADU-friendly? +
How much will an ADU increase my property value in Montrose? +
Can I use my Montrose ADU as a short-term rental (Airbnb / VRBO)? +
Does Montrose's seismic zone affect ADU construction requirements? +
Where do I submit ADU plans in Montrose? +
More Services in Montrose
Free · No Obligation
Not Sure If Your Montrose Lot Qualifies?
Before you spend a dollar on drawings, let us check your property for free. We'll tell you honestly whether your Montrose lot supports an ADU, what it could rent for, and what to do next — no pressure, no sales pitch.
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