Mobile Office Trailers for Rent & Sale in Dallas, TX
If you need mobile office space in Dallas that’s ready fast, Texas State Modular delivers practical, fully equipped solutions built for real job sites and growing businesses. We provide mobile office trailers for rent and sale in Dallas, TX, with delivery, setup, and customization handled from start to finish.
From construction projects to commercial expansions, our mobile office buildings give you a reliable workspace without the delays or costs of traditional construction. Rent, lease, or buy. Browse our in-stock fleet or call us for pricing.
What Is a Mobile Office Trailer?
A mobile office is a portable, pre-built workspace designed to be delivered and installed wherever your business operates. These units are commonly used when speed, flexibility, and convenience matter most.
Instead of waiting months for a permanent structure, you can have a fully functional office delivered and ready in days.
Standard Features Include
- Heating and air conditioning for year-round use
- Electrical systems, outlets, and lighting
- Insulated walls for comfort and energy efficiency
- Secure entry doors and lockable windows
- LP Smart Panel exterior built for daily job site use
Optional Upgrades
- Restrooms and plumbing
- Coffee bars, kitchenettes, and break areas
- Conference rooms
- ADA decks and ramps for site access
- Added or removed walls, upgraded flooring, and exterior finishes
This makes mobile offices in Dallas a practical solution for both short-term and long-term needs.
Wet vs Dry Mobile Offices: What the Terms Mean
A wet mobile office includes a built-in restroom with plumbing. A dry mobile office has no restroom and no plumbing.
That single difference drives most of the decision:
- Wet units work when your site has no restroom nearby, or when staff and clients stay in the office all day. They need a water source and either a sewer tie-in or a holding tank.
- Dry units cost less to rent and set up. They fit sites that already have facilities, or sites where portable restrooms are already on order.
One detail worth checking. Our 12 foot and wider wet units carry ADA restrooms. The 10 foot wide wet units carry a smaller non-ADA restroom. If your site needs ADA compliance, start at 12 feet wide.
If you need a mobile office trailer with a bathroom, the 12×60 wet mobile office and the 14×64 with three private offices are two of the most requested layouts in our fleet. For sites that only need facilities and not office space, we also supply standalone restroom units.
Mobile Office Trailer Sizes and Floor Plans
Our in-stock fleet runs from 160 to 1,920 square feet, plus classroom and complex builds above that. Every listed size is usable office space. Overall trailer length runs about four feet longer once you include the hitch.
| Size | Usable Sq. Ft. | Layout | Restroom |
| 8×24 | 160 | One small office plus open area | Wet or dry |
| 10×40 | 360 | Two offices | Wet (non-ADA) or dry |
| 10×50 | 460 | Two offices plus 10×22 open area | Wet (non-ADA) or dry |
| 12×48 | 528 | Two 12×12 offices plus open area | ADA wet or dry |
| 12×50 | 552 | Sales office, coffee bar, large open area | ADA |
| 12×60 | 672 | Two 12×12 offices plus open area | ADA wet or dry |
| 12×64 | 720 | Two 12×12 offices plus open area | ADA |
| 14×64 | 840 | Two, three, or four private offices | ADA |
| 24×48 | 1,056 | Five offices, double wide | ADA |
| 24×60 | 1,344 | Four 12×12 offices, double wide | ADA |
| 24×64 | 1,440 | Four 12×12 offices, double wide | ADA |
| 28×64 | 1,680 | Four offices, double wide | Two ADA |
| 28×78 | 1,776 | Four offices, full kitchen option | ADA |
| 32×60 | 1,920 | Reconfigurable open areas | ADA |
Three Trim Levels
Two trailers of the same size can feel very different inside. We stock three trim levels so you pay for the finish your project actually needs.
- Standard job site trailer. Our plain, hardworking package. Built for daily construction traffic. See the 12×60 standard job site trailer.
- Mid-level trim. A step up from the standard job site trailer, and the most common choice across our fleet.
- Upper-level trim, or sales office. A more professional appearance with a coffee bar and upgraded interior. Homebuilders and developers use these to meet clients on site. See the 12×48 sales office.
Single Wide vs Double Wide
A single wide office trailer arrives as one unit, 8 to 14 feet across. It sets up quickly and moves easily between sites. Our 8×24 is small enough to reposition around a job site with a 3/4 to 1 ton pickup.
A double wide office trailer arrives as two sections joined on site. You get open span space, room for four or more private offices, and dual HVAC. Setup takes longer and needs a flatter pad.
For anything larger, we combine sections into multi-unit modular buildings and modular complexes.
Specialty Layouts
- Sales offices with a coffee bar and professional finish, used by homebuilders
- Job trailers built for daily construction traffic
- Locker room and shower buildings at 1,476 sq ft with 30 shower heads
- Portable classrooms from a 1,632 sq ft two-room building up to a 4,216 sq ft eight-classroom complex
- Guard shacks and security booths for gate and access control
We can scale your setup from a single unit to a full mobile office complex.
Rent, Lease, or Buy: Which Option Fits
Three ways to get a mobile office in Dallas. The right one depends on how long you need it.
Rent for Short-Term Projects
If you only need space for a limited time, renting a mobile office is often the most efficient route. Many Dallas businesses use rentals to stay flexible while keeping costs predictable.
Common situations where rentals make sense include:
- Active construction projects
- Temporary office overflow
- Seasonal demand
- Short-term project management needs
With quick delivery and straightforward setup, you can get up and running without disrupting your timeline.
Lease for Multi-Year Projects
Leasing works for projects running one to five years. Monthly payments stay lower than a purchase. You keep the flexibility to return, upgrade, or swap the unit when the project changes.
Long-term leases usually cover more customization than short-term rentals. We lease and sell from the same in-stock fleet, so ask about both when you call.
Buy for Repeat Use
For ongoing or repeat use, buying a unit may be the better investment. Owned mobile office units can be tailored to fit how your team works and reused across multiple projects.
Layout options can include:
- Private offices for management
- Open workspace for teams
- Conference or meeting areas
- Restrooms and employee break spaces
For businesses comparing different building options, buying offers more control over cost and timing while still delivering a professional workspace. Here are seven reasons a used modular building holds its value.
Buying a Used Mobile Office Trailer in Texas
A used mobile office costs less than a new build and ships faster. We sell from our in-stock fleet, so what you buy is a unit you can walk through before you commit.
What to check before you buy any used office trailer:
- Floor and subfloor. Soft spots near doors and restrooms signal past leaks.
- Roof condition. Ask when it was last sealed and whether it holds a warranty.
- HVAC size and age. Confirm the tonnage matches the square footage. Our 12 and 14 foot wide units run 3 ton systems, double wides run two.
- Frame and axles. These decide whether the trailer can be moved again later.
- Plumbing. On wet units, confirm the water heater and holding tank still work.
- Restroom compliance. Ask whether the restroom is ADA rated. Not every unit on the used market is.
We can also add or remove walls, change restrooms, update flooring, and refinish exteriors on any unit before it ships. Check current fleet availability or call us to ask what is on the lot this week.
How Much Does a Mobile Office Trailer Cost in Dallas?
Rates depend on size, trim level, restroom type, term length, and how far the unit travels. Below is what the Dallas-Fort Worth market currently publishes, followed by the factors that move your quote.
Published DFW Market Ranges
| Unit Class | Size Range | Market Monthly Range |
| Compact | 8×24 to 10×40 | $250 to $450 |
| Standard single wide | 12×48 to 12×60 | $400 to $800 |
| Large single wide | 12×64 to 14×64 | $600 to $1,000 |
| Double wide | 24×60 and up | $900 to $1,800 |
These are market figures published by suppliers serving the DFW area, not a Texas State Modular quote. We price each unit by size, trim level, and term. Call us now for your number.
What Moves the Price
- Size. A 160 sq ft compact and a 1,920 sq ft double wide sit at opposite ends of the range.
- Trim level. A standard job site trailer costs less than the same footprint in sales office trim.
- Wet or dry. Plumbing adds cost to both the unit and the site connection.
- Term length. Longer terms lower the monthly rate.
- Delivery distance. Measured from our yard in Alvarado, south of the Metroplex.
- Customization. Wall changes, flooring, exterior finishes, and custom floor plans.
- Site work. Foundations, utility connections, ADA ramps, and add-ons.
Costs Beyond the Monthly Rate
Rental rates cover the unit. Budget separately for delivery and pickup, blocking and leveling, steps and ADA ramps, utility connections, and any damage waiver on the contract.
Turnkey Delivery, Permits, and Setup
Most suppliers drop a trailer and leave. We work as a full-service general contractor, which means one point of contact handles the whole job.
Our turnkey service covers:
- Design concepts and layout planning
- Permit acquisition
- Site preparation and foundations
- Electrical, HVAC, and plumbing installation
- Data and communications
- Utility connections
- ADA-compliant decks, ramps, and steps
- Canopies and exterior additions
- Parking lot installation
A dedicated project manager keeps your timeline and budget on track.
What You Prepare
Even on a turnkey job, a few things speed up delivery day:
- A reasonably level pad. Compacted gravel or firm soil.
- Truck access. A clear path with room to swing the trailer into position.
- Overhead clearance. No low power lines or branches over the placement area.
- Utility locations. Mark where power, water, and sewer connections will land.
Delivery timing varies with the extent of the modifications. In-stock units with no changes move fastest. Call us with your site details and we will tell you where you stand.
Why Businesses Choose Mobile Offices
For many companies in Dallas and across Fort Worth, mobile offices solve problems that traditional buildings cannot.
Speed
You can go from planning to fully operational in a fraction of the time.
Flexibility
Units can be relocated or reconfigured as your needs change.
Cost Control
Fewer surprises compared to ground-up construction.
Minimal Disruption
No major buildout means less impact on your job site or operations.
Common Uses for Mobile Office Trailers
Our mobile offices in Dallas support a wide range of industries and applications:
- Construction jobsite offices and project management facilities
- Temporary construction offices on long-term infrastructure and commercial builds
- Sales offices for premier home builders
- Education classrooms and school administration space
- General expansion space during renovations or growth
- Medical and professional office space
- Government and municipal projects
- Oil, gas, and energy field operations
If your team needs a workspace on-site, mobile offices are often the most practical solution.
Businesses across the metroplex use these units the same way. Here are the top business uses for mobile offices in Fort Worth.
Mobile Offices vs Container Offices
Both give you workspace on site. They differ in build and use case.
Mobile office trailers sit on a steel chassis with a hitch. They deliver more square footage per dollar, install faster, and move between sites easily. They suit teams of two or more.
Conex office units are converted shipping containers. They are heavier, harder to break into, and stack. They suit high-security sites, long placements, and tight footprints where a trailer will not fit.
Choose a trailer for space and speed. Choose a container for security and permanence.
Why Work With Texas State Modular
Texas State Modular is locally owned and operated, with our yard in Alvarado and stock ready across the Dallas Metroplex.
- You reach a local person. Call us and you talk to someone in the Metroplex, not a corporate call center.
- Full-service general contractor. We handle permitting, site work, utilities, and installation, not just the drop-off.
- In-stock fleet. More than 30 units on the lot, from 160 sq ft compacts to 1,920 sq ft double wides, plus classroom complexes.
- Three trim levels. Pay for the finish your project needs, not the one we happen to have.
- Custom floor plans. We add or remove walls, change restrooms, and adjust finishes on stock units.
- Coverage beyond Texas. Project managers in Oklahoma, Arkansas, and Louisiana support multi-state work.
Office hours are 7:30 am to 6:00 pm, Monday through Friday.
FAQs About Mobile Office Trailers
How much does it cost to rent a mobile office trailer in Dallas?
Rates depend on size, trim level, restroom type, and term. Suppliers across DFW publish monthly ranges from about $250 for a compact unit to $1,800 for a large double wide. We quote each unit individually. Call 214-304-3416 for your number.
What is the difference between a wet and a dry mobile office?
A wet unit has a built-in restroom with plumbing. A dry unit has no restroom. Wet units cost more to rent and need a water source plus a sewer connection or holding tank. Our 12 foot and wider wet units carry ADA restrooms. The 10 foot wide wet units carry a smaller non-ADA restroom.
Do you sell used mobile office trailers?
Yes. We lease and sell from the same in-stock fleet, so you can walk through a unit before you buy it. We can also modify it first by changing walls, restrooms, flooring, or the exterior finish. Fleet availability changes, so call to ask what is on the lot.
Should I rent or buy a mobile office trailer?
Renting works best for short-term projects, seasonal demand, or temporary overflow because upfront costs stay low. Buying makes more sense if you plan to use the unit long term or across multiple job sites, since an owned unit can be customized and reused as your needs change.
What sizes of mobile office trailers are available?
Our in-stock units run from 8×24 at 160 usable square feet up to 32×60 at 1,920 square feet. The 12×60 at 672 sq ft and the 14×64 at 840 sq ft are among the most requested. Classroom buildings and modular complexes go larger. Note that listed square footage is usable office space, and overall trailer length runs about four feet longer with the hitch.
What site preparation is needed before delivery?
You’ll need a reasonably level surface and clear access for the delivery truck. As a full-service general contractor, we also handle site preparation, foundations, and utility connections when your project needs them.
Do I need a permit for a mobile office trailer in Dallas?
Usually yes, and requirements vary between Dallas, Fort Worth, Arlington, and surrounding cities. Permit acquisition is part of our turnkey service, so we can manage it for you rather than leaving it on your plate.
Can a mobile office be connected to utilities?
Yes. Units come pre-wired for electrical hookups, and options like plumbing for restrooms and kitchenettes can be added. We handle electrical, HVAC, plumbing, and data connections in house.
Can I move my mobile office to a different job site later?
Absolutely. Mobile offices are built to be relocated, which makes them a smart investment for contractors and businesses that move between projects. We can handle transport and reinstallation at your new location.
Request Mobile Office Space in Dallas Today
If you’re looking for a mobile office solution in the Dallas area, Texas State Modular can help you find the right fit for your project.
Contact us to request a quote and get your office in place faster. We deliver across Dallas, Fort Worth, Arlington, Plano, Irving, and the surrounding metroplex.