Commercial Building Permit (New Construction / Addition / Major Alteration) in Aspen, Colorado

Aspen requires a commercial building permit (new construction / addition / major alteration) for: Reviewed under the 2021 IBC as locally amended (Ordinance #1, 2023); the dedicated commercial/multifamily checklist is the City's 'Building Permit Application Checklist for Commercial and Multifamily Projects (2021 IBC)', Updated 5/23/23; Classified as a 'New Major Permit' (Queue Designator priority level 1, the lowest-priority tier among new applications) when the project is new construction or changes floor area (FA), height, net livable, or net leasable area, per the City's Permit Types & Triggers document; Contractor must hold a current City of Aspen contractor license; commercial work requires a light commercial or unlimited license classification (per the City's Tenant Finish Cheatsheet, Updated 4/14/2026, which states this licensing rule for commercial work generally), and historic properties additionally require the GC to hold the City's Historic Preservation contractor certification; A pre-submission building checklist review meeting with Building staff is formally built into the commercial checklist itself — the checklist ends with a signature block where an applicant who DECLINES the pre-submittal meeting must sign an acknowledgment that doing so 'may result in a lengthier building review process'; Applications submitted in PDF via the City's Salesforce Permit Portal following File Preparation Standards; Building Support performs a completeness review (sent within about 1 week) before submittal fees are due and review begins; Checklist-required documents for commercial new construction include (per the New Construction column): Permit Application Packet (must be filled out entirely or the submission will not be accepted), Energy Code Compliance (COMcheck or prescriptive path), Line Grade Verification Form, Signed Special Inspection and Testing Agreement, Structural Calculations, Soils Report, Mechanical Docs, Benchmarking Agreement, CMP (Construction Management Plan — an Engineering requirement), and Water/Sewer Service Disconnect Applications where applicable; asbestos reports apply to additions/alterations/demo rather than virgin new construction; Required 24x36 plan sheets (New Construction column) include: Cover Sheet, Survey, Area Sheet, Site Plan, CREMP/RREMP Plan, Existing & Proposed Floor Plans, Reflected Ceiling Plans, Lighting Plan with spec sheets, Occupancy/Means of Egress Plans, Separation/Fire Resistance Plans, Fire Resistant Assembly Listed Installation Details, Accessibility Plans & Details, Roof Plan, Elevations/Height, Sections, Details, Schedules, Excavation/Earth Retention Plans, Civil Plans (discuss with Engineering), Electrical Plans, Kitchen Plans, Mechanical Plans, Plumbing Isometrics, and Structural Plans; Historic Preservation gate: if the property is on the City's Inventory of Historic Sites and Structures or within a historic district, HPC review/approval is a distinct process from Building Division plan review and its timelines are NOT included in any building-permit review clock; contact HP@aspen.gov before designing exterior work; Planning/land-use gate: changes to net leasable space or floor area can require a land use review through the Planning Permit Review Team before or alongside the building permit (stated in the City's Planning & HP Tenant Finish Guide for interior work, and inherent in the Major-permit triggers for larger projects); commercial development in Aspen is also subject to the City's Growth Management Quota System (GMQS) in the Land Use Code — verify allotment/land-use-review needs with the Planner of the Day early, before permit submittal; Verify the proposed use is an allowed use in the zone district before submitting; a change between commercial, residential, or lodging uses requires contacting the Planner of the Day (Planning & HP Tenant Finish Guide, Updated 5/1/2026). If your project isn't listed, confirm with City of Aspen Community Development Department, Building Division at 970-920-5000 before starting work.

In Aspen, the published Submittal Fee is: Assessed once the application is deemed complete; payment starts the review clock. Additional published fees: Building Permit Fee + Plan Review (valuation-based) — Computed via the City's Building Permit Fee Estimator (Excel) referencing the current Municipal Code Fee Ordinance (Title 2); Issuance Fees — Charged at 'Ready for Issue' status; must be paid within 180 days of that status date or the permit expires. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

The City deliberately does not publish a Round-1 review timeline for Major Commercial permits — its Building Permit Timelines page directs Major Commercial applicants to check in with their assigned permit coordinator. For scale, the published Round-1 SLA for New Major Residential permits is 16-18 weeks, and additional review rounds for Major permits add a published 8-10 weeks per round. The clock starts only once the application is deemed complete and submittal fees are paid.

You'll need: Building Permit Application Checklist for Commercial and Multifamily Projects (2021 IBC); Permit Application Signature Packet; Zoning Checklist for Commercial Building Permit Applications; Signed Special Inspection and Testing Agreement, Structural Calculations, and Soils Report; Construction Management Plan (CMP); Energy Code Compliance (COMcheck or prescriptive path). Depending on your project, Aspen may also ask for: 2021 Submittal Guide — Commercial & Multifamily. See the required-documents checklist on this page for details on each.

Aspen requires 5 inspection(s) for a commercial building permit (new construction / addition / major alteration), in order: Foundation, Framing, Rough Electrical / Plumbing / Mechanical, Fire Inspections, Final Inspection. Schedule each through City of Aspen Community Development Department, Building Division (970-920-5000).

Apply through City of Aspen Community Development Department, Building Division at 427 Rio Grande Place, Aspen, CO 81611. Phone: 970-920-5000, email: buildingsupport@aspen.gov. Office hours: City of Aspen main line 970-920-5000. Building Support (permit requirement inquiries, pre-submittal questions): buildingsupport@aspen.gov, Monday-Friday 9:00am-5:00pm. Builder of the Day (building code/regulations questions): builderoftheday@aspen.gov, 970-429-2735, Monday-Friday 8:30am-4:30pm. Planner of the Day (zoning, floor area, net leasable, signage, mountain view plane, exterior design): planneroftheday@aspen.gov, 970-429-2764, walk-in hours Monday-Friday 9:00am-12:00pm. Historic Preservation: HP@aspen.gov, 970-429-2758. Construction hours: Monday-Friday 7:30am-5:30pm, Saturday 9:00am-5:00pm, no construction on Sundays.. Official information: https://aspen.gov/179/Building.

Aspen, Colorado has adopted: 2021 International Building Code (IBC) — adopted by Ordinance #1, 2023 (January 24, 2023), effective for permits submitted March 31, 2023 and later; the IRC has NOT been adopted by the City of Aspen and is not applied — single-family, duplex, and townhouse projects are reviewed under the 2021 IBC as locally amended, per the City's own 'Building Permit Application Checklist for Singlefamily, Duplex, and Townhouse Projects (2021 IBC)'; 2021 International Existing Building Code (IEBC); 2021 International Mechanical Code (IMC); 2021 International Fuel Gas Code (IFGC); 2021 International Plumbing Code (IPC); 2021 International Fire Code (IFC); 2021 International Swimming Pool and Spa Code (ISPSC); 2021 Aspen Energy Code (local amendment/supplement to the IECC); 2023 National Electrical Code (NEC), effective August 1, 2023; 2024 Colorado Wildfire Resiliency Code with local amendments — adopted by Ordinance 6, 2026 (March 25, 2026), effective April 23, 2026; referenced directly in the current Fence Permit Application Checklist (fences within 8 feet of a structure must be noncombustible/ignition-resistant; hedges within 5 feet must use ignition-resistant vegetation); Prior code cycle: 2015-edition IBC/IEBC/IMC/IFGC/IPC/IFC applied to permits submitted between February 2017 and March 2023, with local amendments in Ordinance 40, 2016 (superseded, listed for reference only); Local amendments to all adopted codes are codified in Title 8 (Building and Building Regulations) of the Aspen Municipal Code; Municode's Aspen library is a JavaScript-rendered application that could not be scraped directly in this or the prior session (confirmed again 2026-07-23: raw curl returns only the Angular SPA shell, and the shared browser environment used for the re-chase attempt this session was too unstable to reliably render deep-linked Title pages). However, the City's own 'Currently Adopted Building & Energy Codes' page (aspen.gov/197) directly publishes a 'Climate & Geographical Design Criteria' table (2026-07-23, live-confirmed): Ground snow load 100 psf; Wind Speed/Exposure Category 89 mph / B; Seismic Design Category C; Weathering Severe; Frost line depth 36 inches; Termite None to slight; Decay None to slight; Winter design temp -15°F; Summer design temp 82°F; Ice shield underlayment required Yes; Air Freezing Index 2000; Mean annual temperature 40°F. This resolves the design-criteria gap without needing Title 8/Municode.. Local amendments apply — see the Aspen overview page for the full list.

Frequently, yes. Properties in the Commercial Core Historic District or individually designated require Historic Preservation review as a separate process, and changes to net leasable space, floor area, or use can require a Planning land use review under Aspen's Land Use Code (including its Growth Management Quota System) before the building permit can issue. The City's own guidance says to contact the Planner of the Day before permit submittal for any change between commercial, residential, or lodging uses.