Shipping container permits in Colorado — 10 counties and 8 towns in one table

A shipping container permit in Colorado is decided at the county or town desk, never by the state. This guide puts 10 counties and 8 mountain towns in one table with what each one publishes about a container: whether a permit is needed, how long the box may stay, where it may sit, what the snow-load note says and who answers the phone. Every sourced cell links its page and section, and where a desk publishes nothing the cell says so and gives the number.

The table covers a rented box, which is temporary equipment on somebody else's permit path. A container converted into a permanent building follows a longer road, and the Colorado permit answer covers that distinction and the three permit families in general terms.

Which question decides the permit: site, lot or street?

Three placements produce three different conversations, and the desk needs to hear which one you mean in the first sentence. The 18 jurisdictions below publish different rules, and every desk that publishes one sorts a container by where it sits and for how long.

An active construction site

On a site with an open building permit, a storage container or a site office is accessory to the work already approved. Summit County makes that explicit: construction offices are allowed in any zoning district with a temporary use permit, and the office leaves at the final certificate of occupancy or after 180 days of suspended work under LUDC §3806 and §3806.01. Avon exempts construction trailers and stored equipment on a property with a valid building permit from its temporary use permit under Development Code §7.24.080(f), and Glenwood Springs lets a portable storage container sit on a construction site until the certificate of occupancy or the permit's expiry, whichever comes first, under Municipal Code §070.030.040(d)(4). The other desks publish no rule that reaches a container on a permitted site; the table says which ones, and each of those rows carries the number to confirm with.

The 2021 International Building Code treats a structure erected for less than 180 days as temporary under Section 3103, and Section 3103.1.2 requires a permit from the building official for a temporary structure that covers more than 120 sq ft (the section's own words add "including connecting areas or spaces with a common means of egress or entrance that are used or intended to be used for the gathering together of 10 or more persons"). A 20 ft office covers 160 sq ft, so under the model code it is over the threshold. Whether a locked storage box that nobody works inside is read the same way is the desk's call, and only the desk can make it.

A private lot for the long term

A container on a residential or commercial lot with no construction underway is a zoning question first. Grand County, Boulder County and Glenwood Springs exempt a one-story detached accessory building of 120 sq ft or less from a building permit, and Denver's residential shed rule stops at 200 sq ft. A 20 ft box covers 160 sq ft, so it fits inside Denver's shed exemption and outside the other 3, and in all 4 the zoning review is separate from the building permit.

Glenwood Springs is the 1 jurisdiction of the 18 that publishes a placement rule for a container on a lot: rear or side of the principal building, at most 10 ft tall, never stacked, no more than 1,000 sq ft of containers on the site, and screened where a street or a residence can see it (Municipal Code §070.030.040(d)(4)). The other 17 publish no rule written for containers, so the question for a box on a lot there is whether the district's general rules for accessory structures or outdoor storage reach it, and that is the zoning desk's call, not a lookup in this table. Summit County shows what such a rule looks like: its residential outdoor-storage section puts stored goods in a side or rear yard and asks for screening on the smaller lots, without naming containers, and this guide has not confirmed whether the county treats every personal storage box as stored equipment; the Summit County answer walks through it and it applies only outside the towns.

A public street or right-of-way

A container in a street, an alley or a sidewalk zone is a right-of-way question, and where the table shows a route into the right-of-way it is an approval separate from the building permit. Denver publishes the most complete rule, 4 mountain towns publish an approval, a license or a season, and Douglas County keeps roll-off containers off public roads entirely. The street section below covers each one; the point here is that a street placement needs its own application, or is not offered at all, even when the lot next to it needs nothing.

What do the 10 counties actually publish?

Each row below is what the county or town publishes on its own site, with the page and section linked. Where a desk publishes no container rule, the cell says "confirm with the building department" and gives the number rather than guessing. Summit County's construction-office rule appears only in the Summit County row, because it is a county land use code that stops at each town boundary.

How we built this table: Every cell comes from the jurisdiction's own site or code, fetched and read on September 13, 2026, and each is linked to its page and section. A cell that says "confirm with the building department" means 2 searches and 2 page reads found no published rule; nothing in the table is inferred from a neighboring county.

Where a county publishes a container rule

Five of the 10 counties publish something a container fits into. Summit County's construction-office rule under LUDC §3806 is the only one written for a jobsite office, and its 180-day suspension clock is the only duration limit any county states for private land. Eagle County's permit matrix reaches a factory-built structure, Grand County and Boulder County publish the 120 sq ft shed exemption that a 20 ft box exceeds, and Denver publishes both a 200 sq ft shed exemption and a complete street rule.

Among the 10 counties only Denver's street sheet uses the word "container", and 3 of the 5 rules are exemptions rather than permissions. An exemption from the building permit leaves the zoning question open, which is why the Denver and Boulder rows both send you back to the desk for the placement itself.

Where the answer is a phone call

Pitkin, Garfield, Routt and Jefferson counties publish their adopted codes, their fee schedules and their contact numbers, and nothing about a container; Douglas County adds only its road rule for trash dumpsters and roll-offs. That is not a gap in the research; it is where the published material stops, at the code edition and the phone number, so the placement itself is a call to the desk. Jefferson County moved to the 2024 building codes for permits applied for on or after July 1, 2026, Pitkin County has run the 2021 series since January 30, 2023, and Garfield County's residential sheet still lists the 2015 editions.

The code edition matters because it sets the snow, wind and frost numbers a permitted office is checked against, and those differ between a 2015 and a 2024 adoption. When you call one of these 5 counties, ask 3 things: whether the placement needs zoning review, whether a building permit applies to the size and use, and what design snow load the parcel carries.

Eagle County in detail

Eagle County is JOLT's home county, and the Eagle County permit guide walks the process step by step: the Building Resolution's 115 mph wind speed, 48 in frost depth and seismic category C, the 120 sq ft shed exemption a 20 ft box exceeds, and the permit matrix entry for moving and setting a factory-built structure. The county's own FAQ adds that its Building Division permits and inspects unincorporated land only, so an address in Vail, Avon, Eagle or Gypsum belongs to the town.

Snow load in Eagle County is a map lookup, not a countywide number. The Building Resolution's amended Section 1608.2 sends design snow loads to the 2016 Colorado Ground Snow Map or the 2016 Colorado Design Snow Loads by the Structural Engineers Association of Colorado (Building FAQ), so the inspector reads the parcel's elevation before quoting a figure. JOLT publishes no snow-load rating for any unit; the design check is the engineer's and the county's.

How do the 8 mountain towns differ from their counties?

A town inside a county takes its own applications, adopts its own code edition and may write its own right-of-way rule. The Eagle County FAQ says it directly for Vail, Avon, Eagle, Gypsum, Minturn, Red Cliff and Basalt: the county processes permits for unincorporated land only, and each town takes its own applications. The same split holds for Aspen, Glenwood Springs, Breckenridge, Telluride and Crested Butte, which is why Summit County's construction-office rule does not appear in the Breckenridge row; Steamboat Springs is the exception, sharing one regional desk with Routt County.

Vail, Avon and Eagle County

Vail adopted the 2024 International Building Code and International Residential Code effective January 1, 2025 (recent code amendments), 1 edition ahead of the county's 2021 adoption. The town publishes no container rule, so a placement inside town limits starts with the Building Department at 970-479-2139 and a description of the site, the use and the duration.

For a Vail project, the county's snow map still describes the terrain, but the town's inspector applies the town's code. Ask which design snow load the town assigns to the address rather than carrying a county figure across the boundary.

Avon, Vail's neighbor in Eagle County, publishes the most complete temporary-structure rule of the 8 towns. A temporary use permit is required for a temporary structure, and the code's own list of temporary structures includes an office and a manufactured or mobile unit under Development Code §7.24.080(b) and (e); construction trailers and stored equipment on a property with a valid building permit are exempt under §7.24.080(f). An administrative permit covers at most 30 days in a calendar year and runs no longer than 1 year, and past 30 days the Planning and Zoning Commission decides after a public hearing (§7.24.080(d)). A construction trailer or stored equipment on a permitted jobsite is the exempt case; a box on a lot with no building permit is the 30-day case, and the desk at 970-748-4030 can say which case a box in a given use is.

Avon also publishes its design numbers where the county publishes a map: a minimum roof snow load of 75 psf at or below 8,200 ft and 90 psf above it, a 48 in frost depth and a 115 mph wind speed (adopted building codes, Adopted Standards). The town's snow-load elevations map on the same page decides which figure a parcel carries.

Aspen and Pitkin County

Aspen's published rule is about the street, not the lot: field offices and similar items may not be placed in the public right-of-way without prior approval of the City Engineer under Municipal Code §21.04.060. On a private parcel inside the city, the Building Department at 970-920-5090 is the desk; outside the city, Pitkin County's line at 970-920-5200 is.

Both desks publish the 2021 code series; the snow-load figure still comes from each desk's own amendments and the parcel's elevation, so it is confirmed per address, not per boundary. The Aspen location page covers the delivery side of a Roaring Fork placement, including the Zone fee for the address.

Glenwood Springs and Garfield County

Glenwood Springs is the 1 desk in the table that regulates portable storage containers by name. Under Municipal Code §070.030.040(d)(4) a container may sit on a construction site as storage incidental to the work while the building permit is open, and it leaves once the certificate of occupancy is issued or the permit expires, whichever comes first. Outside a project a container is an accessory use where Table 030.1 allows it: at the rear or side of the principal building, off circulation aisles, fire lanes, easements and public rights-of-way, at most 10 ft tall, never stacked, and no more than 1,000 sq ft of containers on a site, which is 6 of the 20 ft boxes or 3 of the 40 ft. Where a street, a customer parking area or a residence can see the box, the code asks for a 6 ft opaque fence, wall or berm.

Any other temporary structure needs a temporary use permit approved before it is set, and that permit runs at most 14 consecutive days with up to 3 renewals in a calendar year (§070.030.050). The city's Building Department at 970-384-6450 has required the 2021 codes since June 6, 2022, and its design criteria sheet lists a 50 psf ground snow load and a 36 in frost depth; the sheet predates that adoption, so ask the desk for the current figure. Outside city limits, Garfield County's line at (970) 945-8212 is the desk, and the county publishes no container rule at all.

Breckenridge and Summit County

Breckenridge permits inside town limits under the 2024 International Building Code and International Residential Code (adopted building codes), and its engineering desk requires a right-of-way permit for construction, encroachment or staging in town right-of-way (engineering permits, Right-of-Way Permit). Summit County's LUDC, including the construction-office rule, governs unincorporated land only, so a Breckenridge address does not get a county temporary use permit.

The practical test is the parcel's jurisdiction, not the mailing address. Many "Breckenridge" addresses sit outside town limits, and those follow the county rules in the Summit County answer; the town's building division at 970-453-3180 can say which side of the line a parcel is on.

Steamboat Springs, Telluride and Crested Butte

Steamboat Springs runs its permits through the Routt County Regional Building Department at (970) 870-5566, and the city's building code ordinance adopts the ICC 2021 editions (City of Steamboat Springs). One desk covers the city and the county, which removes the boundary question but not the container one, because neither publishes a container rule.

Telluride's Planning and Building Department at (970) 728-2175 publishes no container rule either. Crested Butte publishes 2: field offices may not be placed in the right-of-way without the Town Manager's approval under Municipal Code §11-1-30, and right-of-way permits are approved for May through October only (licensing and permitting). A Crested Butte street placement in the other 6 months is not a permit question; it is prohibited.

What happens when the container sits on a public street?

A street placement is where the published rules cluster, because a road authority regulates the right-of-way whether or not the zoning code mentions a container. The rules below are the ones the 18 desks publish; a container on private land behind the property line is outside all of them.

Denver's 180-day street rule

Denver's information sheet DOTIPT-104.1 covers dumpsters, roll-offs and other containers in the public right-of-way. Every container needs a Right-of-Way Revocable Street Occupancy Permit, the permit must be visible with its start and end dates, and containers may stay at most 180 days within a 12-month period. Placement is inside a parking lane, at least 20 ft from any corner, alley or entrance, and never on a sidewalk, tree lawn or travel lane.

The sheet also says who applies: the dumpster or container company obtains the permit from DOTI Permit Operations, with traffic control plans uploaded through e-Permits and 5 business days allowed for processing. That is the reverse of the usual allocation in JOLT's rental terms, so a Denver street placement is something to raise with JOLT before reserving rather than after. The Denver answer covers the private-lot side of the city.

Mountain towns: seasons and approvals

Aspen and Crested Butte write the same sentence into their codes: field offices and similar items may not be constructed in the public right-of-way without prior approval, of the City Engineer in Aspen under §21.04.060 and of the Town Manager in Crested Butte under §11-1-30. Crested Butte adds the calendar: right-of-way permits are approved for May through October only. Glenwood Springs allows an accessory container no right-of-way placement at all under §070.030.040(d)(4), and keeps a temporary use or structure off publicly owned property, rights-of-way included, unless the applicant first obtains a revocable license to encroach (§070.030.050(d)), and its container section repeats the point for storage boxes. Breckenridge requires a right-of-way permit for construction staging or encroachment in town right-of-way, and Douglas County keeps trash dumpsters and roll-off containers off public roads altogether.

The season matters more than the approval in a ski town. A Crested Butte street placement has a 6-month window, and a mountain street that is plowed all winter is a poor home for a 4,850 lb box in any case, because the plow route and the snow storage need the curb lane. Plan a winter placement on the lot, behind the property line, and keep the street for the delivery truck's approach.

Who applies for the street permit

Rental Agreement section 5.2(d) makes all permits, approvals, zoning, HOA and landlord consents the customer's responsibility, and section 7.1 requires use in compliance with all laws, codes and permits. Denver's sheet is the 1 published exception, because it names the container company as the applicant for the street occupancy permit. Read together, a Denver street placement is a conversation with JOLT first and the city second; wherever else the table shows an approval route, section 5.2(d) puts the application on the customer, and where it shows a prohibition there is nothing to apply for.

Whatever the desk decides, the truck still needs the site conditions in section 5.2: about 70 ft of straight-line clearance for a 20 ft unit and 100 ft for a 40 ft unit, adequate overhead clearance, road width, turning radius and grade. A street permit that allows the box but not the truck's approach produces a failed trip, and section 5.3 charges the full delivery fee for that trip plus the next one.

Will an HOA or design review board approve a container?

An HOA approval is a private consent that sits beside the public permit, and neither replaces the other. What the covenants say about a container is a question for the association, because covenants can regulate appearance, duration and placement on a lot where the county publishes nothing, and no 2 sets of covenants read the same.

Covenants are a second, private approval

Rental Agreement section 5.2(d) lists HOA and landlord consents alongside permits and zoning as the customer's responsibility. The association's answer belongs in writing before the reservation, because a refused consent after delivery does not pause the rent. Section 16.1 requires 15 days' written notice for pickup, and section 16.2 continues rent until JOLT retrieves the unit.

Ask the association 3 questions: whether temporary construction equipment is allowed during a permitted project, whether a storage container is allowed at all outside a project, and whether design review applies to a temporary structure. The jobsite setup checklist puts those answers in the pre-delivery file with the utility marks and the site plan.

What to show a design review board

Design review boards ask for an elevation, a color and a duration. The Alpine build was specified for those reviews: the catalog lists a mountain envelope of matte black with cedar surrounds, a standing-seam over-roof with a covered entry deck, backup heat, and the WATCH camera, CONNECT Starlink and POWER solar built in, at $1,895/mo per month. The catalog's own description of who it is for reads "HOA, resort, and front-of-house sites", and a rendering of the unit is on the office page.

The BRAND upgrade adds the customer's logo as removable vinyl on both long sides for $450, which some boards treat as signage, so mention it in the application rather than after delivery. Nothing in the catalog promises that a board will approve a unit; the point is that the board sees a finished building rather than a bare box.

Landlord consent on a commercial lot

A commercial tenant needs the landlord's consent under the same section 5.2(d), and the lease decides what that consent looks like; read it for site plan, parking and exterior-change clauses before asking. A 20 ft box takes 160 sq ft of pavement, roughly 1 parking stall, and Glenwood Springs' code says a container may not occupy a required parking space, so bring the duration, the pickup date and the stall count to the conversation. The rent vs buy guide covers the longer-term case where a placement runs past 24 months and the question turns from consent to ownership.

What should you have ready before you call?

The desk decides faster when the caller has the numbers, and JOLT's terms put a clock on the permit because the delivery window is booked at reservation. Rental Agreement section 5.1 sets standard delivery within the window in the reservation, typically 2 to 4 weeks, and section 2.2 allows a free cancellation more than 14 days before the window opens. A permit that needs 5 business days, as Denver's street permit does, fits inside that window; a design review calendar with 1 meeting a month may not.

The dimensions the counter asks for

A 20 ft container measures 20 ft by 8 ft by 8 ft 6 in outside, covers 160 sq ft, and the 20 ft storage box weighs about 4,850 lb empty. A 40 ft high-cube runs 40 ft by 8 ft by 9 ft 6 in, covers 320 sq ft and weighs about 8,600 lb. The conex box guide has the interior dimensions and volumes by size, and the 20 ft storage page has the published sheet for the box at $295/mo per month.

An office adds 2 items the storage box does not: the shore-power connection and the occupancy. The office runs on a 50-amp connection made by a licensed electrician through the provided inlet under section 7.2(f), so ask the desk whether that connection needs its own electrical permit; the occupied use is what brings a temporary structure review under the building code. Say "site office" or "storage" in the first sentence.

Timing against the delivery window

Count backward from the window. Free cancellation ends 14 days before the window opens under section 2.2, so a permit that is still open at that point is a decision: keep the reservation and carry the risk of a failed trip under section 5.3, or cancel and rebook once the desk answers. JOLT Express, at $750, targets delivery within 7 business days on the Base 20 ft office and does not shorten a county's review.

For a winter placement in a mountain town, decide where the snow from the roof and the pad will go before the box lands, and ask the desk whether it wants that plan with the application. The container delivery mountain access guide covers the truck side of a winter set.

What the rental terms assign to you

1. 01

   Name the jurisdiction

   Confirm whether the parcel is inside a town or on unincorporated county land. The Eagle County FAQ, the Breckenridge and Vail pages and the Steamboat arrangement above all show that the mailing address is not the answer; the parcel map is.

2. 02

   Describe 1 exact use

   Storage or occupied office, 20 ft or 40 ft, the duration, the project permit number if there is one, and the utilities. Ask the desk for the governing section in writing rather than a verbal yes.

3. 03

   Draw the footprint

   Property lines, the 160 sq ft or 320 sq ft footprint, setbacks, the truck's straight-line approach, overhead lines and the door orientation. The same drawing serves the county, the HOA and the driver.

4. 04

   Collect the private consents

   HOA and landlord consents under section 5.2(d), in writing, before the window is booked. Keep them with the permit in the field file the superintendent holds on delivery day.

5. 05

   Match the reservation to the answer

   Reserve once the desk has named the path, and keep the cancellation date in view. Section 11 puts fines and penalties from a violation of any law, code or permit on the customer, so an unpermitted placement costs more than a rebooked window.

The terms are consistent from the first call to the pickup: section 5.2(d) assigns the permits, section 7.1 requires compliance with them, section 11 indemnifies JOLT for a violation of any law, code or permit, and section 16 keeps rent running until the unit is retrieved. For a purchased unit the buy pages say the same thing in 1 word: permits are never included. The desk's answer, in writing, is the cheapest document in the file.