United Rentals mobile office alternatives in the Mountain West

United Rentals can make sense when your project already buys equipment through one account. Its specialty line lists storage containers, office containers, office trailers and modular buildings beside the company's broader equipment operation. Its relevant Mountain West branches are in Henderson, Colorado; Murray, Utah; and Boise, Idaho.

The reason to compare alternatives is not that the listed space is interchangeable. It is to separate the office or storage decision from a bundled order and see the term, transport, recurring charges and included features clearly. United Rentals routes this line through a quote, and its site advises scheduling delivery well in advance to get the container size needed (unitedrentals.com, Henderson storage and mobile office branch page, Murray storage and mobile office branch page and 4 other pages, checked September 11, 2026).

Who else rents mobile offices and containers in the Mountain West?

Start with the job location, not the logo on the quote. A nearby yard can matter for scheduling, but yard count alone does not tell you whether a specific unit is available. Rate access also varies: some operators print a starting rate, some reveal one after location and dates, and others require a quote.

The table keeps United Rentals as the baseline and then follows the directory rank. The order is arithmetic on stated facts: rate access, a stated minimum, a stated delivery statement, states with a yard, and whether an office is listed. It does not grade unit condition, service quality or availability.

Use the list to make a short call sheet. Ask every operator for the same delivery address, delivery window, office type, rental duration and requested options. A consistent request makes line-by-line review possible.

Where JOLT fits

JOLT operates one yard in Gypsum, Colorado and delivers on its own truck across Zones A–E and the four-state Zone F. It is a focused choice when you need a ground-level container office, storage, temporary fence or its listed site equipment and want every JOLT charge visible before the call.

The 20 ft office has three levels. Base uses shore power and includes a mini-split for heating and cooling, a steel door, two barred slider windows, lights, outlets and vinyl-plank flooring. Grid-Free adds WATCH, CONNECT and POWER. Alpine adds a standing-seam over-roof, covered entry deck, cedar surrounds and backup heat.

20 ft office tiers

Item	Price
20 ft office container — Base Your site has shore power. 3-month minimum	$795 /mo
Most popular 20 ft office container — Grid-Free No power on site. No problem. 3-month minimum	$1,495 /mo
20 ft office container — Alpine HOA, resort, and front-of-house sites. 3-month minimum	$1,895 /mo

3-month minimum on every office; $750 reservation deposit.

For more interior length and an enclosed bathroom, JOLT also rents the 40 ft office with bathroom at $1,595/mo. It is a different layout rather than a larger version of every 20 ft tier, so compare the actual floor plan and utility needs.

Rent is only one line. Delivery, recurring charges, optional upgrades and any applicable deposit or waiver belong in the project forecast. JOLT publishes those lines rather than folding them into an unpublished total.

One-time fees

Item	Price
JOLT Express On-site within 7 business days instead of the standard 2–4 week window	$750 one-time
BRAND Customer logo, 24×48 vinyl, two sides	$450 one-time
On-site relocation Move within the same site	$450 per move
Fence install At delivery	$1.75 /LF
Fence removal At pickup	$1.75 /LF

The reservation flow takes the job ZIP and shows the delivery week before payment. The pricing page gives the current rent, fee and zone details. JOLT is not the fit when the same purchase order must include crane trucks, excavators, lifts or a complete general-equipment package.

Reading a bundled quote line by line

Do not compare only the first monthly line. Normalize the quote around the period your schedule actually needs, and identify charges that continue every month. Get pickup treatment in writing at the start rather than when demobilization is already underway.

JOLT's office minimum is 3 months in Zones A–E and 12 months in Zone F. Pickup requires at least 15 days' written notice, and rent continues until retrieval. Early termination during the minimum owes the remaining minimum rent plus pickup under the rental terms.

For Zones A–E, pickup equals the published outbound delivery fee. Zone F has a published delivery charge, while pickup is quoted in writing before delivery. That distinction should be carried into your comparison rather than estimated.

The damage waiver is not insurance. A customer may instead provide a certificate of insurance and the required refundable deposit. Check the risk provisions and put the route you choose beside every competing quote's insurance requirements.

Specialists worth a call by state

Colorado. Dry Box lists storage containers and container offices from a Denver yard and prints starting rates; confirm its minimum in the written quote (dryboxusa.com, locations page, rent a container page and 1 other page, checked September 11, 2026). Satellite Shelters has a Commerce City branch and lists mobile offices, modular buildings, ground-level offices and storage containers (satelliteco.com, Denver branch page, FAQ page and 1 other page, checked September 11, 2026).

Warehouse on Wheels trades in Colorado as Colorado Trailer Rentals, with Denver and Colorado Springs drop lots. It lists storage trailers, ground-level storage and office-and-storage combos, 30-day rentals, and placement within 24 to 48 hours (warehouseonwheels.com, Colorado Trailer Rentals brand page, checked September 11, 2026). Storm's Specialty Services operates from Grand Junction, lists storage containers and mobile office trailers, and says delivery and placement are included in its quote (storms-specialty.com, contact page, about page and 1 other page, checked September 11, 2026).

Utah. Dry Box also has Salt Lake City. Cascade Container operates from a Salt Lake City depot and lists dry, refrigerated and office containers on a one-month minimum followed by month-to-month rental (cascadecontainer.com, Ogden page, container rentals page and 1 other page, checked September 11, 2026). Mobile Modular lists North Salt Lake, mobile office trailers and modular office buildings; standard modular buildings deliver in weeks from order (mobilemodular.com, Utah location page and modular office buildings page, checked September 11, 2026).

Idaho. Pacific Mobile Structures has a Boise yard, lists storage containers and mobile office trailers, states no minimum lease term, and says in-stock standard buildings typically arrive within one to two business days (pacificmobile.com, locations page, FAQ page and 1 other page, checked September 11, 2026). Mobile Modular Portable Storage also has Boise and lists storage, office, combo and refrigerated containers on 30-day renewable periods (mobilemodularcontainers.com, Boise location page, products page and 2 other pages, checked September 11, 2026).

Montana. MoCan Containers has Billings and Bozeman yards and lists 20 ft and 40 ft storage, from a single month through longer arrangements (mocanmt.com, locations page, rentals page and 1 other page, checked September 11, 2026). Montana Mobile Storage lists 10, 20 and 40 ft storage plus 20 ft office containers from Missoula; confirm term and delivery in the written quote (montanamobilestorage.com, rental page, company brochure and 1 other page, checked September 11, 2026).

Wyoming. WillScot has a Casper yard and lists storage containers, office trailers, container offices and modular buildings. Its six regional yards span four of the five states, while rental rates, minimum term and delivery should be confirmed in the written quote (willscot.com, Casper location page, checked September 11, 2026). JOLT serves Wyoming through Zone F with a 12-month minimum and a written pickup quote before delivery.

Next step

Write one scope with the job ZIP, requested unit, required arrival week, planned rental months, power situation and access constraints. Send it to the two or three operators whose yards and unit lists fit. Then compare the returned lines against the checklist above.

If JOLT fits the scope, review how delivery works, check your delivery zone, and start at Reserve. The site should have a firm, level, well-drained pad and a clear truck route: about 70 ft straight-line clearance for a 20 ft unit and about 100 ft for a 40 ft unit.