8×16, 8×20, 8×24 and 8×28 Office Trailers: Everything You Need to Know
The complete guide to small office trailers — what each size delivers, who they are right for, and how to get one on your California job site fast.
The 8×16, 8×20, 8×24, and 8×28 office trailers are the smallest standard configurations in the office trailer lineup. They range from 128 to 224 square feet and are designed for single-person or two-person use on job sites, at checkpoints, in guard stations, and anywhere a compact, professional workspace needs to be placed quickly and efficiently. API Trailers carries all four sizes for rent, lease, or purchase with delivery anywhere in California.
Small office trailers are some of the most practical tools on a California job site. They go where larger trailers cannot, fit on tight sites with minimal footprint, and get delivered and set up faster than any other temporary workspace solution. For a site superintendent who needs a home base, a guard station at a gated entrance, or a single contractor who needs a weatherproof office without renting more space than necessary — the 8-foot wide series is built for the job.
This guide covers all four 8-foot wide configurations in detail — specs, best uses, and what to consider when choosing between them. You can also view API Trailers’ full office trailer floor plan gallery and browse the complete office trailer lineup for all available configurations.
The 8×16 Office Trailer
8×16 Office Trailer Floor Plan · View Full Floor Plan Gallery
The 8×16 is the most compact office trailer in the standard lineup. At 128 square feet, it is purpose-built for a single occupant who needs a clean, weatherproof, temperature-controlled workspace with a desk, filing storage, and basic office infrastructure. It is the right choice when space on the site is tight, the project is short-term, or the workspace need is genuinely one person.
Because of its compact footprint and lighter transport weight, the 8×16 is also one of the easiest trailers to position on challenging sites. It can access locations that larger units cannot reach and requires less site preparation than any other configuration.
Best Uses
- Security checkpoints and guard stations at gated construction sites
- Single-person site superintendent office on a compact job site
- Permit office or documentation station on government projects
- Remote single-person field office for energy, utility, or agricultural operations
- Temporary office during a business renovation or expansion
The 8×20 Office Trailer
8×20 Office Trailer Floor Plan · View Full Floor Plan Gallery
The 8×20 is the most frequently rented small office trailer in California. The additional 32 square feet over the 8×16 makes a meaningful difference in day-to-day usability — enough room for two workstations, a plan table, or a workstation plus dedicated filing and storage space without the workspace feeling crowded.
For contractors who need a basic job site office that is easy to deliver, quick to set up, and affordable on a monthly lease, the 8×20 is typically the starting point. It handles the majority of single-superintendent and small contractor office needs across California job sites of all types.
Best Uses
- Contractor job site office for single superintendent or project manager
- Small business temporary office during construction or renovation
- Real estate sales office for a small development project
- Two-person field office for engineering or inspection teams
- Agricultural or ranch operations field office
- Church or nonprofit temporary administrative space
The 8×24 Office Trailer
8×24 Office Trailer Floor Plan · View Full Floor Plan Gallery
The 8×24 sits between the standard 8×20 and the 8×28 and is a strong choice when the 8×20 feels slightly cramped but the project does not yet justify stepping up to a larger configuration. The 192 square feet provides noticeably more working room — enough for a dedicated plan area and a private workstation without competing for the same floor space.
One of the key advantages of the 8×24 over smaller units is that it can be configured with an optional restroom at one end, making it a self-contained workspace option for sites where external restroom facilities are not available or not convenient.
Best Uses
- Job site office where the 8×20 is slightly too small but a 10-foot wide unit is not needed
- Single-person office with integrated restroom option for remote sites
- Inspection or engineering field office with dedicated plan review area
- Small contractor office for projects running 6 to 24 months
- Temporary office for a growing small business
The 8×28 Office Trailer
8×28 Office Trailer Floor Plan · View Full Floor Plan Gallery
The 8×28 is the largest unit in the 8-foot wide series and the right choice when you need the maximum footprint within the standard width. At 224 square feet, it comfortably handles 2 to 3 occupants with room for workstations, filing, plan storage, and an optional restroom at one end without the space feeling compromised.
For contractors and project managers who want to stay in the 8-foot wide category for ease of site access and delivery but need more working room than the 8×20 or 8×24 provides, the 8×28 is the natural top of the small office trailer range before stepping up to the 10-foot wide configurations.
Best Uses
- 2 to 3 person contractor office with room for plan storage and filing
- Site office with optional integrated restroom for remote projects
- Small team engineering or inspection office
- Sales or leasing office for a residential development
- Long-term single-person executive field office with maximum workspace
- Church, school, or nonprofit temporary administrative space
Need one of these sizes on your California site?
API Trailers carries all four configurations in our 1,000+ unit fleet. Same-week delivery available. Call us and we will confirm availability and get it scheduled.
Comparing the Four Sizes Side by Side
| Size | Sq Ft | People | Restroom Option | Best For |
|---|---|---|---|---|
| 8×16 | 128 | 1 | No | Checkpoints, guard stations, single-person compact sites |
| 8×20 | 160 | 1 to 2 | No | Standard entry-level contractor office, most popular small unit |
| 8×24 | 192 | 1 to 2 | Optional | More working room, plan review area, remote sites needing restroom |
| 8×28 | 224 | 2 to 3 | Optional | Maximum 8-foot wide space, small team office, filing and plan storage |
Standard Features on All 8-Foot Wide Office Trailers
Every 8-foot wide office trailer from API Trailers is built to the same quality standard regardless of size. Here is what is included on every unit.
- Electrical panel and outlets throughout for workstations, computers, printers, and charging
- HVAC heating and cooling sized for the unit — critical for California’s wide climate range from coastal marine to Central Valley heat
- Insulated walls, ceiling, and subfloor for year-round comfort
- Windows with screens for natural light and ventilation
- Lockable entry door with steps
- Interior lighting throughout
- California DOH certified construction on all units
Available add-ons
- ADA compliant entry ramp (required for government, school, and healthcare applications)
- Security screens on windows and doors
- Skirting around the base perimeter
- Tie-downs for wind and seismic requirements
- Furniture rental — desks, chairs, and filing cabinets available through API Trailers
- Integrated restroom (on 8×24 and 8×28 configurations)
Delivery and Setup in California
All four 8-foot wide office trailer sizes are transported by truck and positioned on your site by API Trailers’ licensed, bonded, and insured in-house delivery team. The 8-foot width is a standard transport dimension, which means delivery logistics are straightforward for most California sites. No oversize load permits are required for 8-foot wide units, and they can access sites that 10-foot and 12-foot wide units cannot.
For sites with particularly tight access — narrow driveways, overhead obstructions, or soft ground — API Trailers’ delivery team carries trans-lift equipment to position units without direct drive-in access. Call ahead and describe your site conditions so we can confirm the right delivery approach before arrival day.
Setup typically takes 2 to 4 hours for a single unit. Once positioned, the unit is connected to your electrical supply and any utility hookups. It is ready for occupancy the same day.
Rent, Lease, or Buy — Which Is Right for You?
| Option | Best For | How It Works |
|---|---|---|
| Monthly Rental | Short-term projects under 12 months, uncertain timelines | Month-to-month agreement, slightly higher rate, maximum flexibility |
| Long-Term Lease | Projects with defined 12 to 36-month timelines | Lower monthly rate locked in for the lease term, early termination with notice |
| Purchase | Ongoing permanent need, recurring multi-project use | Own the unit outright, financing available through API Trailers |
Frequently Asked Questions
Ready to get the right unit on your site?
API Trailers manufactures and leases office trailers across all sizes from our Santa Maria, California factory. 1,000+ unit fleet. California DOH certified. ADA compliant. Same-week delivery available anywhere in California.