This is PermitBase’s published record for Mount Crested Butte as of 2026-07-06. It has since been superseded — see the current record. A historical record reflects what PermitBase had verified at that time; it may not capture a real-world change the jurisdiction had made but PermitBase had not yet verified, and it includes any errors we later corrected. Snapshots are never edited retroactively.
Mount Crested Butte building permits
VerifiedMount Crested Butte, Colorado — as published 2026-07-06.
Verified 2026-07-06 · Source
Codes adopted
2021 International Building Code (IBC) — Town Code Chapter 6, Article II, adopted by Ordinance No. 6, Series 2024, in effect as of January 3, 2025, pursuant to Title 31, Article 16, Part 2, C.R.S.2021 International Residential Code (IRC) — Town Code Chapter 6, Article III, with local amendments including Table R301.2 climatic design criteria (Sec. 6-32, a 155 psf ground snow load) and a modified automatic fire sprinkler requirement (Sec. 6-59)2021 International Existing Building Code (IEBC) — referenced in the Town's Adopted Codes list on mtcb.colorado.gov/building2021 International Mechanical Code (IMC) — Town Code Chapter 6, Article IV (Sec. 6-73 through 6-75), with a local flat-fee Table 1-AM mechanical permit fee schedule2021 International Fuel Gas Code (IFGC) — adopted per the Town's Adopted Codes list; the State of Colorado is responsible for reviewing and inspecting plumbing rather than the Town2021 International Fire Code (IFC) — Town Code Chapter 8, Article I, enforced through the Crested Butte Fire Protection District (CBFPD), which performs all fire alarm/suppression/sprinkler inspections rather than the Town Building Division2021 International Property Maintenance Code — per the Town's Adopted Codes list2021 International Energy Conservation Code (IECC) — per the Town's Adopted Codes listColorado Model Electric Ready and Solar Ready Code — Town Code Chapter 6, Article X (Sec. 6-141 et seq.), adopted by Ordinance No. 6, Series 2024, in effect as of January 3, 2025; applies to new one- and two-family dwellings and townhouses (residential buildings are exempted from certain waiver provisions per Section 101.4.1/102.1)2025 Colorado Wildfire Resiliency Code (WRC) — per the Town's own 'Colorado Wildfire Resiliency Code' link and 'WRC Standards Summarized' summary sheet published on mtcb.colorado.gov/buildingNational Electrical Code and International Plumbing Code — the Town's own Adopted Codes page states: 'The State of Colorado is responsible for reviewing and inspecting electrical and plumbing. Please contact the State of Colorado to determine the following code editions: National Electrical Code, International Plumbing Code' — Mt. Crested Butte does not itself adopt/administer these trade codesFull Town Code Chapter 6 (Buildings and Building Regulations) and Chapter 8 (Fire Prevention and Protection) text and Ordinance No. 6, Series 2024 hosted at mtcb.colorado.gov and mirrored on ecode360.com/MT4975 and qcode.us/codes/mtcrestedbutte
Permit types & fees
Residential Building Permit (New Construction)
VerifiedRequired for new single-family homes, duplexes, townhomes, and similar residential structures within Town of Mt. Crested Butte limits. Reviewed under the 2021 IRC as locally amended (Town Code Chapter 6, Article III), including the Town's Table R301.2 climatic design criteria (155 psf ground snow load, 105 mph wind design speed, Seismic Design Category B, 9,400 ft Manual J elevation), a stricter automatic fire sprinkler trigger than neighboring Crested Butte, and a concurrent Design Review + Permit Review process administered directly by the Community Development Department.
Verified 2026-07-06 · Source
Requirements
- Design Review and Permit Review are conducted CONCURRENTLY (not sequentially gated); Design Review approval, once granted, is valid for 1 year
- Must meet Table R301.2 design criteria: 155 psf ground snow load (2016 SEAC Colorado Design Snow Loads), 105 mph wind design speed, Seismic Design Category B, 36-inch minimum frost line depth, mandatory roof ice barrier underlayment, -16 F winter design temperature, 9,400 ft Manual J elevation
- Automatic residential fire sprinkler system required in all two-family dwellings/townhomes (no size threshold) and in one-family dwellings with gross floor area 4,800 sq ft or more (Town Code Sec. 6-59)
- Crested Butte Fire Protection District (CBFPD) approval letter required confirming access, gas meter location, and water supply comply with Town Code Chapter 8
- Construction Management Plan (CMP) required, addressing on-site parking, material staging, trash/toilets, and seasonal right-of-way parking restrictions (no parking in Town rights-of-way November 15-April 15)
- Soils report required; engineer must address foundation design, driveway design, and retaining walls per the soils report recommendations
- Site survey/plat prepared by a Colorado-licensed land surveyor required with the permit application (Town Code Sec. 6-49/R105.3)
- Landscaping point schedule required, tied to Gross Residential Floor Area (GRFA) — minimum 2,000 base points in single-family residential plus 1 additional point per sq ft above 2,500 sq ft GRFA, with minimum tree/evergreen composition thresholds
- Mt. CB Water & Sanitation District tap fee receipt required prior to permit issuance
- Contractor must hold a current Mt. CB Business License (BOLF)
- Design Review Compliance and Cleanup Deposit required for any permit with valuation $1,000 or more, tiered by total valuation (up to 2% of valuation for higher tiers), up to 50% refundable on substantial design-review completion
- 3% Use Tax on construction/building materials, calculated on 50% of estimated total valuation, reconciled within 90 days of CO issuance or final inspection
- Radon mitigation plan must be shown on drawings (per the Town's Radon Requirements IRC 2015 policy)
- Electrical and plumbing work under this permit is NOT reviewed or inspected by the Town — those permits/inspections are obtained separately and directly from the State of Colorado (Colorado Electrical Board and Colorado State Plumbing Board)
Required documents
- RequiredDesign and Permit Review Application (GovWell portal)Submitted online via app.govwell.com/mtcb; combined design and building permit review process
- RequiredBuilding Permit Application (fillable form)
- RequiredSite survey/plat by a Colorado-licensed land surveyor
- RequiredCrested Butte Fire Protection District approval letter
- RequiredConstruction Management Plan (CMP)
- RequiredSoils/Geotechnical Report
- RequiredLandscaping Plan with Point Table
- RequiredMt. CB Water & Sanitation District Tap Fee Receipt
- RequiredMt. CB Business License (BOLF) for General Contractor
- OptionalProperty Owner Authorization FormRequired if the applicant is not the property owner
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation $1.00 to $500.00 | $23.50 | Town Code Sec. 6-21 / Table 1-A (IBC) and Sec. 6-52 / Table R1-A (IRC), identical schedules, set directly in Ordinance No. 6, Series 2024 |
| Building Permit Fee — valuation $501.00 to $2,000.00 | $23.50 for the first $500 plus $3.05 per additional $100 or fraction thereof | — |
| Building Permit Fee — valuation $2,001.00 to $25,000.00 | $69.25 for the first $2,000 plus $14.00 per additional $1,000 or fraction thereof | — |
| Building Permit Fee — valuation $25,001.00 to $50,000.00 | $391.75 for the first $25,000 plus $10.10 per additional $1,000 or fraction thereof | — |
| Building Permit Fee — valuation $50,001.00 to $100,000.00 | $643.75 for the first $50,000 plus $7.00 per additional $1,000 or fraction thereof | — |
| Building Permit Fee — valuation $100,001.00 to $500,000.00 | $993.75 for the first $100,000 plus $5.60 per additional $1,000 or fraction thereof | — |
| Building Permit Fee — valuation $500,001.00 to $1,000,000.00 | $3,233.75 for the first $500,000 plus $4.75 per additional $1,000 or fraction thereof | — |
| Building Permit Fee — valuation $1,000,001.00 and up | $5,608.75 for the first $1,000,000 plus $3.65 per additional $1,000 or fraction thereof | — |
| Plan Check Fee | 65% of the Building Permit Fee | Separate from and in addition to the permit fee, per Town Code Sec. 109.5/R108.5 |
| Use Tax | 3% of 50% of total estimated project valuation | Reconciled within 90 days of CO issuance or final inspection approval |
| Design Review Compliance and Cleanup Deposit — valuation $1,000-$4,999 | $500 | — |
| Design Review Compliance and Cleanup Deposit — valuation $5,000-$9,999 | $1,000 | — |
| Design Review Compliance and Cleanup Deposit — valuation $10,000-$49,999 | $2,000, or 2% of total valuation for higher tiers per the Building Official's determination | — |
| Work Done without a Building Permit | $100.00 or the permit fee, whichever is greater | 2026 Fee Resolution No. 9, Series 2026, effective May 20, 2026 |
Residential Addition / Remodel Permit
VerifiedRequired for additions, interior remodels, and exterior remodels to existing residential structures in Mt. Crested Butte, per the Town's own Permit Policy document covering remodels, additions, repairs, excavation, and driveway improvements. Reviewed under the 2021 IRC and IEBC as locally amended (Town Code Chapter 6); additions of 1,000 sq ft or more that bring total gross floor area to 4,800 sq ft or more trigger whole-structure fire sprinkler requirements.
Verified 2026-07-06 · Source
Requirements
- Interior remodels requiring a permit include basement finishes, attic conversions, kitchen/bathroom remodels, structural changes (adding/removing doors, windows, walls, or changing rough opening sizes), new/rerouted ductwork or mechanical ventilation, insulation changes to the exterior thermal envelope, gas/solid-fuel appliance changes, and drywall teardown/replacement over a 4x8 ft sheet
- Exterior remodels requiring a permit include roofing replacement or new roof, siding replacement, and deck structural element replacement or new deck
- No permit required for like-for-like replacement of cabinets, countertops, tiling, flooring, windows, or doors (provided rough openings don't change), or drywall patching under a 4x8 ft sheet — all replacements must still meet International Energy Code requirements
- Additions of 1,000 sq ft or more that bring total gross floor area to 4,800 sq ft or more require the ENTIRE structure to be protected with an automatic fire sprinkler system (Town Code Sec. 6-59)
- Level 3 alterations to existing structures with gross floor area 4,800 sq ft or more require automatic fire sprinkler protection
- Retaining walls over 4 feet require engineering and must be textured, colored, or faced per the Town's Design and Permit Review Punch List
- Design Review Compliance and Cleanup Deposit required for permits with valuation $1,000 or more
- 3% Use Tax on construction/building materials, calculated on 50% of estimated total valuation
Required documents
- RequiredBuilding Permit Application (fillable form)
- OptionalDesign and Permit Review Application (GovWell portal, for exterior-affecting projects)
- RequiredMt. CB Business License (BOLF) for General Contractor
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee (same valuation-tiered schedule as new construction, Table R1-A) | $23.50 minimum, scaling per Town Code Sec. 6-52 | Ordinance No. 6, Series 2024 |
| Plan Check Fee | 65% of the Building Permit Fee | — |
| Use Tax | 3% of 50% of total estimated project valuation | — |
Mechanical / HVAC Permit
VerifiedRequired for heating, cooling, ventilation, and appliance installation, alteration, or repair in Mt. Crested Butte. Governed by the 2021 International Mechanical Code (IMC), adopted by Town Code Chapter 6, Article IV, with a locally set flat-fee Table 1-AM schedule (Town Code Sec. 6-75) rather than a valuation-based fee.
Verified 2026-07-06 · Source
Requirements
- Governed by the 2021 IMC as locally adopted (Town Code Sec. 6-73 through 6-75)
- No separate mechanical permit required if the mechanical work is already covered by an issued building permit (Town Code amendment to IMC Sec. 106.2)
- Flat per-unit fees apply by equipment category rather than a project-valuation-based fee
- Contractor must hold a current Mt. CB Business License (BOLF)
Required documents
- RequiredMechanical Permit Application
- RequiredMt. CB Business License (BOLF)
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Mechanical Permit Issuance Fee | $50.00 | Town Code Sec. 6-75, Table 1-AM, per permit issued — set directly in Ordinance No. 6, Series 2024 |
| Supplemental Permit (original permit not expired/canceled/finished) | $50.00 | — |
| Repair/Addition of Heating, Cooling, Absorption, or Evaporative-Cooling System | $50.00 | — |
| Air-Handling Unit (up to 10,000 cfm, including attached ducts) | $50.00 | — |
| Air-Handling Unit (over 10,000 cfm) | $50.00 | — |
| Evaporative Cooler (non-portable) | $50.00 | — |
| Ventilation Fan (single duct) | $50.00 | — |
| Ventilation System (not part of a heating/cooling system on a permit) | $50.00 | — |
| Exhaust Hood Installation (including ducts) | $50.00 | — |
| Miscellaneous Appliance/Equipment (not otherwise classified) | $50.00 | — |
Roofing Permit (Re-Roof)
VerifiedRequired for re-roofing work in Mt. Crested Butte, reviewed under the 2021 IBC/IRC as adopted, with mandatory ice barrier underlayment per Table R301.2. If the re-roof affects 25% or more of the structure, the entire roof must meet Colorado Wildfire Resiliency Code (WRC) Class A roof-covering, valley-flashing, and vent-mesh requirements per the Town's own WRC Standards Summary.
Verified 2026-07-06 · Source
Requirements
- Roof Ice Barrier Underlayment Required: Yes, per Table R301.2 (Mt. CB Design Criteria 2021)
- If the re-roof project affects 25% or more of the structure, the ENTIRE roof must meet Colorado Wildfire Resiliency Code requirements: Class A roofing materials, minimum 26-gauge metal roof valleys, noncombustible gutters/downspouts, noncombustible corrosion-resistant vent mesh with 1/8-inch maximum openings
- Roofing is explicitly listed as one of the design-review application types that 'does not require drawings/engineering' under the Town's own Design Review Fees schedule, carrying a lower flat design-review fee than projects requiring drawings
- Contractor must hold a current Mt. CB Business License (BOLF)
Required documents
- RequiredBuilding Permit Application — Roofing scope
- RequiredDesign Review Application (no-drawings track)
- RequiredMt. CB Business License (BOLF)
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Design Review Fee — application not requiring drawings/engineering (e.g., roofing, mechanical) | $100.00 | Resolution No. 9, Series 2026 Fee Schedule, effective May 20, 2026 |
| Building Permit Fee (valuation-based, same schedule as new construction) | $23.50 minimum, scaling per Town Code Sec. 6-52 / Table R1-A | No standalone flat re-roof fee is published; billed under the general valuation-based Building Permit fee table based on roofing project valuation |
| Plan Check Fee | 65% of the Building Permit Fee | — |
Sources & verification
Verified against official sources. Last reviewed 2026-07-06.
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Mount Crested Butte building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.