US Construction Trailers — Portable Office Trailer Specialists Nationwide

Portable Mobile Office Trailers
For Sale

Buy new or used portable mobile office trailers in any size for any industry — delivered to your site anywhere in the U.S. Get up to 5 free competing quotes. Fast, affordable, code-compliant.

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60%
Max Savings on Used Units
5
Free Competing Quotes
~1 Hr
Average Quote Return
50
States Served

Purchase New or Used Portable Mobile Office Trailers — All Sizes, All Industries

Why spend all your time going to the office when the office can come with you instead? Whether it’s for on-site monitoring of far-out projects, taking your company on the road without sacrificing comfort, or finding an economical and flexible solution to your office space needs — a portable mobile office trailer for sale from US Construction Trailers can take your business anywhere you want it to go.

We help you buy both new office trailers and used portable office trailers in a wide range of sizes — from compact single-room 8×20 field offices to large double-wide 24×64 multi-room headquarters. No overpaying for office space you don’t need, and no sacrificing comfort and functionality for the sake of portability. Every unit sold through our supplier network is fully wired, fully functional, and designed for immediate use — adhering to national and state mechanical, plumbing, and electrical codes.

We work with the best companies nationwide to get you competitive prices, and fast. Request your free quotes below and receive up to 5 no-obligation competing bids from verified local suppliers in about an hour. Whatever it is you’re looking for — even if you’re not sure yet — we’re here and happy to help.

Get Up to 5 Free Quotes →

Portable Mobile Office Trailers: More Than Just Mobile

Portability is just the most obvious advantage. Here’s everything else that makes a portable office trailer the right purchase.

📦 True Portability

Take your office to practically any location — urban construction sites, rural infrastructure projects, remote facilities, or any jobsite across the country. Handle storage, administrative needs, and project management without going property-hunting for each project and every move. The office goes where the work goes.
⚡ Fully Wired & Functional

Portable mobile office trailers aren’t stripped-down field boxes. Each unit is fully wired with electricity, climate-controlled with HVAC, ready for phone and internet connections, and equipped with everything a traditional office provides. Power up, connect your team, and be productive from day one — with zero capability sacrificed.
💰 Right-Sized Budget

With an abundant selection of portable office trailers across all sizes and price points, we find the exact fit for your jobsite space, your project budget, and your office requirements. You never pay for square footage you don’t need — and you never sacrifice comfort or functionality for the sake of portability.
🔒 Solidly Built & Secure

Portable doesn’t mean flimsy. Every mobile office trailer for sale is solidly constructed and as secure as a traditional office — often more so, since you control all access points. Steel entry doors, deadbolt locks, security-bar windows, and optional alarm systems and cameras are all available.
📋 Code-Compliant

Every portable mobile office trailer in our supplier network adheres to national and state mechanical, plumbing, and electrical codes. New and used units both go through strict quality requirements before they’re offered — you get a code-compliant workspace without the paperwork hassle of a conventional building.
🚚 Delivered Right to You

Purchase a portable office trailer through US Construction Trailers and it’s delivered direct to your site — no transportation coordination, no logistics headaches. On-time delivery is guaranteed. Used units can typically be on-site within 3–10 business days; new units depend on configuration.

Portable Mobile Office Trailer Prices

Estimated purchase prices for new and used portable office trailers. Actual pricing depends on size, features, condition, and location.

8-Foot Wide
Used
$8K–$18K
New
$20K–$32K

8×16 to 8×32. 128–256 sq. ft. 1–3 occupants. Foreman offices, guard booths, small site admin.
10-Foot Wide
Used
$15K–$28K
New
$30K–$45K

10×36 to 10×60. 360–600 sq. ft. 3–5 occupants. Project management, open plan offices. Most popular size.
12-Foot Wide
Used
$20K–$35K
New
$38K–$60K

12×44 to 12×64. 528–768 sq. ft. 5–8 occupants. Multi-office with restroom, plan room, training.
Double-Wide
Used
$28K–$50K
New
$55K–$80K+

24×44 to 24×64. 1,056–1,536 sq. ft. 8–15+ occupants. Full portable headquarters.

*Prices are estimates. Features, condition, location, and market demand all affect final pricing. Get your exact quote →

Portable Office Trailer Size Guide

Match your crew size and office requirements to the right portable mobile office trailer footprint.

Occupants Sq. Ft. Needed Recommended Size Best Use
1 – 2 200 sq. ft. 8′ × 20′ Foreman’s office, security booth, small jobsite admin
2 – 3 300 sq. ft. 8′ × 32′ Small crew office, supervisor and assistant workspace
3 – 5 400–500 sq. ft. 10′ × 44′ Open plan portable office, project management hub
5 – 7 600–700 sq. ft. 12′ × 56′ Multi-office portable building with conference area
7 – 10 900–1,300 sq. ft. 24′ × 56′ Full portable field headquarters with restrooms
11+ 1,500 sq. ft.+ Request Custom Quote Large infrastructure, campus, or multi-department complex

Features Available on Portable Mobile Office Trailers

Every unit arrives ready to use. Standard and optional features available across all portable office trailer configurations.

✅ Standard on Every Unit
  • Full electrical wiring and circuit breaker panel
  • A/C & Heat (central HVAC)
  • Fully insulated walls, floor, and ceiling
  • Windows with blinds or security bars
  • Steel entry door with deadbolt lock
  • Entry steps
  • Interior lighting throughout
  • Phone, internet, and fax hook-up ready
➕ Optional Add-Ons & Upgrades
  • Coffee & conference areas
  • Partition walls and private office layouts
  • Restrooms & showers with plumbing
  • Ramps and decks (OSHA-compliant)
  • Generators for off-grid sites
  • Security cameras and alarm systems
  • Awnings, skirting, and exterior lighting
  • Custom interior finishes and flooring

Industries That Buy Portable Mobile Office Trailers

Portable mobile office trailers serve every sector that needs professional, relocatable workspace.

Construction & Contracting

Site offices, plan rooms, safety briefing areas, and field headquarters that move with the project across multiple active sites.
Real Estate Development

On-site sales offices, model home admin suites, and project management offices for residential and commercial development projects.
Healthcare & Education

Temporary classrooms, administrative offices, and clinical spaces during facility expansions, renovations, or new campus development.
Startups & Small Business

Low-cost permanent office solutions for new businesses that want professional workspace without a commercial lease or expensive construction.

Why Buy Through US Construction Trailers?

More choices, lower prices through competition, and nationwide reach — advantages no single-source provider can match.

Feature US Construction Trailers Single-Brand Manufacturers Local/Regional Dealers
Portable office specialization ✔ 100% Focused ~ One brand’s inventory only ✘ Mixed product types
Multiple competing purchase quotes ✔ Up to 5 Free ✘ Take-it-or-leave-it price ✘ Single quote
New AND used options ✔ Both ~ Limited used stock ~ Varies
Nationwide delivery — all 50 states ✔ All 50 States ~ Branch locations only ✘ Regional only
Units inspected & code-verified ✔ Required on all units ~ Varies ~ Varies
Financing available ✔ Yes ~ Limited ~ Varies

Explore All Portable Office Trailer Options

Browse by condition, type, or acquisition method to find your perfect match.

All Office Trailers For Sale

Full inventory — new and used office trailers for purchase.

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Buy Used Office Trailers

Pre-owned units — inspected, code-verified, 30–60% below new.

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New Construction Trailers

Brand-new units with factory warranty and full customization.

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Mobile Office Buildings

Larger modular office building complexes for purchase.

View Options →
Portable Construction Office Trailers For Rent

Prefer to rent? See our portable office trailer rental options — all sizes, all terms.

View Options →
See Inventory Photos

Browse photos of modular buildings and office trailers from our supplier network.

View Photos →

Frequently Asked Questions

Everything you need to know before buying a portable mobile office trailer.

How much do portable mobile office trailers for sale cost?
Purchase prices for portable mobile office trailers range from approximately $8,000 for a small used 8×20 unit to $80,000 or more for a large new double-wide 24×64 configuration. Used portable office trailers typically cost 30–60% less than comparable new units while delivering identical day-to-day functionality. Key pricing factors include unit size, condition (new vs. used), feature package (especially restrooms and conference areas), geographic location, and current market demand. The fastest way to find your exact price is to request free competing quotes — you’ll receive up to 5 bids from suppliers in your area.
What is a portable mobile office trailer?
A portable mobile office trailer — also called a construction trailer, job site office, or modular portable office — is a self-contained, transportable workspace unit that can be delivered to virtually any location and used as a professional office. These units are fully wired for electricity, climate-controlled with HVAC, and ready for phone and internet connections on arrival. They can be configured with private offices, conference rooms, restrooms, and more. Every unit is designed for immediate use and adheres to national and state mechanical, plumbing, and electrical codes.
Should I buy a new or used portable mobile office trailer?
New portable mobile office trailers offer factory warranties, the latest finishes and features, and full custom configuration from the ground up — best when client-facing appearances matter or when you have very specific layout requirements. Used portable office trailers cost 30–60% less while delivering identical functionality after inspection and reconditioning. For most construction projects and business applications, a quality pre-owned unit delivers exceptional value. We can quote both options simultaneously so you can compare directly — request your quotes here.
What sizes of portable mobile office trailers are available for sale?
Portable mobile office trailers for sale are available in 8-foot, 10-foot, and 12-foot wide configurations with lengths from 16 to 64 feet. Common purchase sizes include 8×20 (200 sq. ft., 1–2 people), 8×32 (256 sq. ft., 2–3 people), 10×44 (440 sq. ft., 3–5 people), 12×56 (672 sq. ft., 5–7 people), and double-wide 24×56 (1,344 sq. ft., 7–10+ people). Custom sizes and specialty floor plans are also available through our supplier network.
Is it better to buy or rent a portable mobile office trailer?
Buying is almost always better than renting for projects lasting 6 months or more or for businesses with recurring portable office needs. Rental fees accumulated over 12–18 months frequently exceed the purchase price of a comparable used trailer. Once you own the unit, there are no monthly fees, no renewal negotiations, and no rate increases. You also gain the ability to move the trailer between job sites and resell or trade it in when no longer needed. For short-term or single-project needs, renting may be smarter — see our portable office trailer rental options.
Can portable mobile office trailers be customized?
Yes. Both new and used portable mobile office trailers can be customized to meet your specific requirements. New trailers can be configured from scratch — floor plan, interior finishes, partition walls, and all features selected before delivery. Used trailers can be upgraded pre-delivery with restrooms, conference area setups, office furniture, ramps, internet connections, security cameras, awnings, and more. Each mobile office unit can be customized to meet your specific needs and interior layout preferences — we work with you to ensure the most functional design for your project.
Do portable mobile office trailers meet building codes?
Yes. Every portable mobile office trailer for sale through US Construction Trailers is designed for immediate use and adheres to applicable national and state codes for mechanical, plumbing, and electrical systems. Both new and pre-owned units meet these standards — pre-owned units are inspected and code-verified before sale. Our supplier partners are familiar with local permit requirements in their service areas and can advise you before delivery.
How fast can a purchased portable mobile office trailer be delivered?
Used portable mobile office trailers are in-stock and can typically be delivered within 3–10 business days of purchase confirmation. New units take longer depending on configuration — standard off-the-shelf new units are generally a few weeks, while fully custom builds take additional time. On-time delivery is guaranteed across our supplier network. Delivery is handled direct to your site — you coordinate the date with the supplier and they manage transportation, setup, and utility connections.
Can I finance the purchase of a portable mobile office trailer?
Yes. Purchase financing and lease-to-own programs are available through our supplier network. Financing options spread the cost over time while you build toward full ownership, preserving working capital for your project operations. Lease-to-own programs allow you to begin using the trailer immediately with fixed monthly payments, with ownership transferring at the end of the term. Mention financing in your quote request and we’ll connect you with suppliers who offer these programs.

Find Your Portable Mobile Office Trailer Today

No one has a better selection, offers better customer service, or gets you better prices on portable office trailers than US Construction Trailers — because we work with the best companies to get you competitive prices, fast. Complete our 30-second form and receive up to 5 free competing purchase quotes from verified suppliers.

Get My Free Purchase Quotes Now

✔ Free    ✔ No obligation    ✔ Up to 5 competing bids    ✔ New & used available    ✔ All 50 states


Portable Mobile Office Trailers For Sale