Colorado Quick Answer
In most Colorado cities, a one-story shed under 200 sq ft with no utilities doesn't need a building permit. But Denver requires a zoning permit for all sheds, Boulder County's limit is 120 sq ft, and mountain communities above 7,000 feet require engineering for snow loads that can exceed 80–100 lbs per square foot. Where you live in Colorado matters enormously — the rules vary more here than in most states.
Why Colorado's Shed Rules Are More Complex Than Most States
Colorado has no statewide residential building code. Every city and county adopts its own code — most based on the International Residential Code (IRC), but with local amendments. This creates a patchwork of rules across the state. Add to this the dramatic differences in climate between the Denver metro (5,280 feet), mountain communities (8,000–12,000+ feet), and the western slope, and Colorado's shed rules become uniquely nuanced.
The three factors that matter most in Colorado: square footage, elevation/snow load, and wildfire zone. In cities like Denver and Boulder, you're mostly dealing with the size threshold. In mountain communities, snow load engineering becomes the dominant concern.
Colorado Permit Rules by City / Jurisdiction
| City / County | Exempt Threshold | Key Local Rules |
|---|---|---|
| Denver | Zoning permit required for ALL sheds; building permit for sheds over 200 sq ft or over 8 ft tall | No complete exemption — even small sheds need a zoning permit. Denver's Community Planning and Development runs the E-permits system. |
| Boulder / Boulder County | 120 sq ft | One of Colorado's strictest limits. Max height 12 ft, no utilities. Number of exempt structures per parcel depends on parcel size (1 under ½ acre; 2 on ½–2 acres; 3 on 2+ acres). |
| Colorado Springs | ~200 sq ft (Pikes Peak Regional) | Pikes Peak Regional Building Department serves Colorado Springs and surrounding areas. Snow load of 30–40 psf applies on the ground; higher for roofs. |
| Fort Collins | ~200 sq ft | Zoning setback rules are actively enforced. Historic preservation zones require additional review. |
| Lakewood | ~200 sq ft | Lot coverage limits may trigger review even on permit-exempt sheds. Verify total lot coverage with the city. |
| Aurora | ~200 sq ft | Follows Denver metro building code standards. Apply through Aurora's online permit portal. |
| Jefferson County (unincorporated) | ~200 sq ft | Wildfire mitigation requirements apply in WUI (Wildland-Urban Interface) zones covering much of the foothills area. |
| Mountain Communities (Evergreen, Conifer, Black Hawk, Nederland, etc.) | Varies — typically 120–200 sq ft | Snow load engineering is the dominant factor. See section below. |
| Ski Town Communities (Breckenridge, Vail, Aspen, Steamboat, Telluride) | Often 120 sq ft or less | Extremely strict architectural review in many resort communities. HOA rules often as or more restrictive than building codes. |
Denver Specifically: No Complete Exemption
Denver is the most important exception to Colorado's 200 sq ft norm. In Denver, all accessory structures require at minimum a zoning permit — even a small plastic storage shed. Here's the Denver breakdown:
- Any shed (any size): Zoning permit required from Denver Community Planning and Development
- Sheds over 200 sq ft OR over 8 feet tall: Full building permit required in addition to zoning permit
- Sheds with electricity: Separate electrical permit required
- Denver setbacks (typical residential): 5 feet from side and rear property lines for accessory structures
- Denver application: Through the Denver E-permits system at denvergov.org/permits. Zoning review for small sheds is often completed over-the-counter (same day)
- Snow load for Denver: Ground snow load approximately 30–35 psf — most standard shed designs handle this, but verify for large structures
Colorado's Most Unique Factor: Elevation and Snow Load
Snow load is the single most important structural factor for sheds in Colorado — and the requirements vary more dramatically within this state than in almost any other.
Snow Load by Elevation Zone (Approximate)
| Elevation Zone | Typical Examples | Approximate Ground Snow Load | What It Means for Your Shed |
|---|---|---|---|
| Front Range (4,500–6,000 ft) | Denver, Aurora, Lakewood, Boulder, Colorado Springs | 30–45 psf | Standard shed designs typically adequate. Verify with manufacturer's specs. |
| Front Range Foothills (6,000–7,500 ft) | Evergreen, Conifer, Golden, Morrison, parts of Jefferson County | 45–65 psf | Many standard pre-manufactured sheds are NOT rated for this range. Engineering review is important even on permit-exempt sheds. |
| Mountain Communities (7,500–9,000 ft) | Breckenridge, Black Hawk, Nederland, Dillon, Frisco | 65–100+ psf | Building permits almost certainly required for any shed. Engineer-stamped plans needed. Roof pitch and structural design are critical. |
| High Mountain (9,000+ ft) | Aspen, Vail, Telluride, Leadville, Steamboat Springs | 100–150+ psf | Standard sheds cannot be used without significant structural modification. Engineer required for any structure. |
🚫 Do Not Use a Standard Shed Above 7,000 Feet Without Verifying Snow Load Ratings
A standard pre-manufactured shed rated for 20–30 psf of snow load (common for lower-elevation markets) will fail structurally under the 60–100+ psf loads common in Colorado's mountain communities. Structural failure under heavy snow is a real hazard. If your property is above 7,000 feet, contact your local building department for the specific ground snow load design value for your area before purchasing any shed. Your building department can usually provide this from ASCE 7 maps.
Wildfire Zones (WUI) — An Additional Consideration
Much of Colorado's foothills and mountain real estate is in designated Wildland-Urban Interface (WUI) zones — areas where residential development meets or intermingles with undeveloped wildland vegetation. In these zones, additional material requirements may apply to sheds:
- Some WUI jurisdictions require Class A or Class B fire-rated roofing on all structures, including accessory buildings
- Combustible siding materials on sheds may be restricted or prohibited within WUI setback zones
- Defensible space clearance requirements may affect where you can place a shed relative to your property line and vegetation
- Jefferson County, Douglas County, Boulder County, and El Paso County all have active WUI requirements — verify with your county's building or planning department
Setback Requirements Across Colorado
While permit thresholds vary by city, most Colorado jurisdictions use similar setback minimums for residential accessory structures:
- Rear yard: 5 feet minimum in most cities; some mountain communities require more
- Side yard: 5 feet minimum in most cities
- Front yard: Sheds prohibited in front yards in almost all residential zones
- From main house: Typically no minimum, but cannot block required egress windows
- From property line in alley-adjacent properties: 5 feet from alley in most cities
Boulder County has more detailed rules: sheds on parcels under half an acre must maintain 5-foot setbacks; larger parcels have different requirements. Always verify with your specific city or county planning department.
How to Apply for a Shed Permit in Colorado
Denver
- Log in to Denver's E-permits system at denvergov.org/permits
- Select "Residential Permit" → "Accessory Structure"
- Upload your site plan showing property lines, house footprint, shed location, and setback dimensions
- For sheds under 200 sq ft, zoning review is often same-day over-the-counter
- For sheds over 200 sq ft, allow 10–15 business days for plan review
- Zoning permit fee: approximately $50–$100 for small sheds; building permit fee: $100–$350 for larger structures
Most Other Colorado Cities
- Contact your city or county building department to confirm current threshold and requirements
- For permit-required sheds: prepare a site plan, shed dimensions, foundation type, and (for mountain communities) engineer's snow load certification
- Apply online or in person at your local building department
- Fees typically range from $50–$250 in most Front Range cities
- Mountain community fees may be higher, especially if engineering review is required
Colorado City Building Department Contacts
| City / County | Phone | Website / Portal |
|---|---|---|
| City of Denver | (720) 865-2705 | denvergov.org/permits |
| Boulder County | (303) 441-3925 | bouldercounty.gov/departments/community-planning-and-permitting |
| Pikes Peak Regional (Colorado Springs area) | (719) 327-2880 | ppacg.org |
| Fort Collins | (970) 416-2341 | fcgov.com/developmentreview |
| Jefferson County | (303) 271-8700 | jeffco.us/building |
| Lakewood | (303) 987-7500 | lakewood.org/building |
| Aurora | (303) 739-7420 | auroragov.org/permits |
💡 If You're in a Mountain Community
For mountain communities not listed above, a quick call to your county's planning department is the fastest way to get accurate current rules. Colorado's mountain counties (Summit, Eagle, Pitkin, Routt, San Miguel, Gunnison) all have active building departments and are accustomed to helping homeowners navigate the snow load and permit process. Don't assume — call first.
Disclaimer: This page is for informational purposes only. Colorado has no statewide building code, and rules vary significantly by city and county. Always verify current requirements with your specific local building department before building. Information researched and accurate as of May 2025.
Frequently Asked Questions — Colorado Shed Permits
A 12×16 shed is 192 sq ft — under the typical 200 sq ft threshold used in Jefferson County's unincorporated areas. If it has no electrical, plumbing, or mechanical connections and is a single story, it likely doesn't require a building permit. However, if your property is in a WUI (Wildland-Urban Interface) zone — which covers large portions of Jefferson County's foothills — additional material requirements may apply. Contact Jefferson County Building Services at (303) 271-8700 to confirm for your specific parcel before building.
In most mountain communities above 7,000 feet in Colorado, any permitted shed (over the local size threshold) will require engineering plans that address snow load. The specific requirement depends on your community, but Summit County, Eagle County, and most resort communities require engineer-stamped structural plans for accessory buildings. Even for permit-exempt-sized sheds, we strongly recommend verifying that the manufacturer's specs include a snow load rating that meets or exceeds your local design value — a standard shed not engineered for high-altitude snow loads is a safety hazard in Colorado's mountains.
In Denver, no — all accessory structures, including small plastic sheds, require at minimum a zoning permit. The good news is that Denver's zoning permit for small structures (under 200 sq ft) is typically approved over-the-counter the same day through the E-permits system. The fee is modest (approximately $50–$100). Even if enforcement of small permit-exempt sheds in Denver is inconsistent, having the permit protects you when you sell your home or if a neighbor files a complaint.
The Denver metro area (roughly 5,000–6,000 feet elevation) has a ground snow load of approximately 30–35 psf per ASCE 7 maps. Most standard pre-manufactured sheds are designed for at minimum 20–25 psf — which may be sufficient for Denver but should be verified. For any permitted shed in Denver, the engineer's plans or manufacturer's specs must demonstrate that the structure meets the local snow load design value. For properties in the Denver foothills (Jefferson County, parts of Boulder County above 6,000 ft), the snow load increases significantly and standard shed designs may be inadequate.
It depends on your jurisdiction. Denver allows shipping containers as accessory storage in some zones but requires a permit. Some mountain communities prohibit them entirely due to aesthetic regulations. Jefferson County and Boulder County allow them in some zones with a permit. The key issue is that shipping containers are typically treated as "structures" — not portable storage — meaning full permit requirements apply regardless of size. Contact your specific city or county building department before purchasing a shipping container for use as a shed in Colorado.