Shipping containers on private property in Denver

Yes — a 20 ft container covers 160 sq ft, below Denver's 200 sq ft residential shed threshold for a building permit, but a zoning permit is still generally required and a construction office needs a temporary zoning use permit under Denver Zoning Code 11.11.15. A heated office is not the non-conditioned shed described by the exception, and a box in the public right-of-way follows Denver DOTI sheet DOTIPT-104.1, revised January 30, 2025.

Which of the three Denver situations applies?

An active construction site, a residential storage placement and a street placement follow different Denver rules. Start by naming one use and one location, because “shipping container” does not tell Zoning Administration whether the proposal is a temporary office, detached storage or an obstruction in public space.

On an active project, Denver Zoning Code 11.11.15 governs a Temporary Construction Office tied to an active construction permit. Related provisions include 11.11.5 for a temporary building or yard used for construction materials and 11.11.7 for a construction fence.

On a residential lot, Denver's shed rule addresses a 1-story, detached, non-conditioned storage structure no larger than 200 sq ft of roof area and 14 ft tall. It removes the building-permit requirement for that defined structure, but a zoning permit is still generally required.

In a public street, DOTI information sheet DOTIPT-104.1, revised January 30, 2025, governs the container and requires a Revocable Street Occupancy Permit. It is not a substitute for private-property zoning approval, and the shed rule does not authorize street placement.

The broader Colorado permit explanation separates zoning, building and right-of-way review. For a Denver parcel, call Zoning Administration at 720-865-2705.

What does the 200 sq ft shed rule cover?

A standard 20 ft container is 20 ft long by 8 ft wide, so its roof footprint is 160 sq ft. That is below 200 sq ft, while a 40 ft by 8 ft container covers 320 sq ft and exceeds the threshold.

The Denver rule is narrower than that arithmetic. It addresses a one-story, detached, non-conditioned storage structure up to 200 sq ft and 14 ft tall, so size alone does not put an occupied, heated or attached conversion inside the exception.

Denver says a zoning permit is still generally required for the qualifying shed. Lots governed by Former Chapter 59 always require one, which makes the parcel's zoning history a desk question rather than something to infer from neighboring yards.

Any electrical or heating installation requires the applicable trade permit. The Base 20 ft office has a mini-split, lights, outlets and a 50-amp shore-power inlet, so it should be described as an office with utilities rather than submitted as unconditioned storage.

The Zoning Administrator's September 10, 2018 memo caps detached accessory structures at 10 percent of the zone lot's area on a gross-floor-area basis. Ask the desk to calculate and apply that cap with all existing accessory structures included; we know of no separate cap for containers.

Inventory the garage, shed and every other detached accessory structure before making that call. Give the desk the zone-lot area and existing gross floor area, then ask what plans or measurements it will accept; do not calculate room for the container from vacant yard area alone.

Keep building-permit and zoning answers in separate notes. A qualifying non-conditioned shed can fall below the building-permit threshold while still needing zoning review, and the 10 percent cap can matter even when the proposed 160 sq ft roof remains under the 200 sq ft shed figure.

The same separation applies to use. Storing household property in an unconditioned box, running a staffed construction office and installing heat create distinct facts for the reviewer, so changing the field plan after approval should go back to the responsible desk.

How does the temporary construction-office path work?

Denver Zoning Code 11.11.15 requires a temporary zoning use permit for a Temporary Construction Office and ties that office to an active construction permit. The project connection is therefore part of the application, not merely a reason the superintendent wants a desk near the work.

Denver's Community Planning and Development zoning-permits material calls for a narrative, legal description and site plan. When the applicant is not the owner, it also calls for a notarized owner letter.

The narrative should state the unit size, office use, expected placement period, staffing and utility plan. The site plan should distinguish the office from the materials yard under 11.11.5 and any construction fence reviewed under 11.11.7 rather than drawing the entire setup as one unlabeled rectangle.

An office can be rental personal property and still need land-use approval. Rental Agreement §6.1 says title stays with JOLT and the unit remains personal property however attached, but Denver decides how its placement and use fit the zoning and building codes.

Do not field-modify the rental to satisfy a sketch. Rental Agreement §7.2 prohibits stacking, welding, cutting, drilling, painting and alteration, and permits utility connections only through provided inlets by a licensed electrician.

What rules apply if the container goes in the street?

Denver DOTI information sheet DOTIPT-104.1, revised January 30, 2025, requires a Revocable Street Occupancy Permit for a container in the public right-of-way. The container company pulls the permit, and the sheet says to allow 5 business days.

The application lead time is not a delivery promise. The street permit must be approved, the delivery window scheduled, and the route physically workable before a container can be set.

The sheet's parking-lane allowance does not authorize a sidewalk, tree lawn, alley mouth or driveway obstruction. Measure from corners, alleys and driveways on the proposed plan, then have DOTI confirm the location rather than asking the driver to improvise at the curb.

DOTIPT-104.1 expressly excludes wheeled trailers. Do not apply its container process to an office trailer or assume that a wheeled unit has no permit requirement; ask DOTI for the correct route.

Which building code does Denver enforce now?

Denver adopted the 2025 Denver Building and Fire Code on June 13, 2025, with an effective date of December 31, 2025. It is based on the 2024 I-Codes and 2021 IECC, so plans submitted in 2026 should identify that Denver code rather than a neighboring county's edition.

The 2021 International Building Code addresses intermodal shipping containers repurposed as buildings in §3115. That section requires verified ISO 6346 plate data, and §3115.8.1 requires engineered foundations and anchorage for permanent container buildings; the Denver official decides how the adopted provision applies to the proposed installation.

A temporary rental office is not automatically a permanent container building. Its duration, occupancy, utility connections, support and alterations are all facts for Denver's review, and a zoning permit does not silently resolve structural or trade-permit questions.

The City and County of Denver is in Climate Zone 5B under 2021 IECC Table C301.1. That designation can inform energy-code review, but it does not establish a parcel setback, foundation detail or exemption for a container.

Denver does not publish one permit fee or review time that covers every private-property application. Ask Zoning Administration at 720-865-2705 for the current process and ask the building desk for the structural and trade requirements.

What private permissions remain the customer's job?

Rental Agreement §5.2(d) makes the customer responsible for permits, approvals, zoning, HOA requirements and landlord consents. A city permit does not prove that a lease allows outdoor storage, and an owner email does not replace Denver's zoning decision.

Give the owner or HOA the same drawing submitted to Denver, including duration, appearance, access and utility route. There is no Denver-wide HOA rule or private review period, so ask the governing association and do not invent a deadline.

The customer must also mark utilities and have a representative at delivery under §5.2. That person needs the approved footprint and authority to direct placement without moving the box into a setback, easement or public area.

If the truck arrives and cannot deliver, Rental Agreement §5.3 makes the trip charge, next trip and hourly waiting after the first 30 minutes chargeable. A missing private approval or unavailable site representative does not shift that preparation duty.

How does delivery from Gypsum work?

Denver is Zone E from JOLT's yard at 60 Spring Creek Rd in Gypsum. Delivery to Denver is Zone E — $1,200 each way, and pickup carries the same Zone E fee; rent and other charges are shown on the pricing page.

JOLT uses its own tilt-bed or flatbed truck under Rental Agreement §5.2. A 20 ft unit requires about 70 ft of straight-line clearance and a 40 ft unit about 100 ft, plus adequate road width, turning radius, overhead clearance and grade.

Denver alleys can make the straight setup distance and turn more important than the container footprint. Walk the route for overhead wires, tree limbs, garage eaves, parked vehicles, gate posts and trash-service conflicts before choosing a rear-yard placement.

The pad must be firm, level and well drained. Mark underground utilities and avoid directing the driver over a sidewalk, landscaping, irrigation or pavement that is not suitable for the truck; site damage from placement at the customer's direction belongs to the customer under §5.4.

For an Aurora-area project, do not reuse Denver's zoning or DOTI process merely because both addresses fall in Zone E. Delivery pricing groups towns by route, while permits remain jurisdiction-specific.

What does the rental timeline require?

The 20 ft storage container has a 1-month minimum, and the Base office has a 3-month minimum. A Denver permit can authorize a different period, and neither rental minimum extends the public approval.

The reservation deposit is applied to the first invoice under Rental Agreement §2. Cancellation in writing more than 14 days before the first day of the delivery window receives a full refund, so resolve the permit path before the cancellation deadline rather than assuming a desk date.

Rent continues until retrieval under §16, and pickup requires 15 days' written notice. A street permit's expiration, a final inspection or the end of construction does not retrieve the box automatically.

Keep the pickup lane open and the container empty. The customer may not move or lift the unit under §5.5, so a later need to clear an alley or required yard is a scheduled relocation issue, not a forklift task for the field crew.

For office budget details beyond the permit, use the Denver jobsite-office cost breakdown. It separates the published unit rate and Zone E transport from approval and site-preparation work.

What should you have ready before you reserve?

Have the parcel address, zoning jurisdiction, active construction-permit number if applicable and a written description that says storage or office, conditioned or unconditioned, occupied or unoccupied, and temporary or permanent. Add the unit's 20 ft or 40 ft dimensions, proposed duration and all electrical or heating work.

Prepare the legal description, narrative, site plan and notarized owner letter when Denver requires it. Mark property lines, existing accessory structures, the 10 percent calculation for the zone lot, truck route, 70 ft or 100 ft setup lane, overhead lines, utility marks and final door direction.

If the placement is in public space, include the approved DOTIPT-104.1 permit and its location conditions. Keep landlord or HOA consent, the licensed electrician's plan, the named delivery representative and the eventual pickup path in the same field packet.