8×28 Construction Office Trailers — Specs, Use Cases & Quotes
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Spec Snapshot
8×28 Office Trailer — The Quick Spec
The 8×28 is the mid-size single-wide office trailer — longer than the 8×24, and the first size in the 8-foot-wide line where a divided office and an interior restroom both become commonly available with decent inventory. It’s purpose-built for a small management team that needs real working space without stepping up to a double-wide. Below are the dimensions, occupancy, and use-case envelope at a glance.
| Footprint (feet) | 8 × 28 |
| Footprint (meters) | 2.44 × 8.53 |
| Approx. interior | ~224 sq ft |
| Typical occupancy | 3-5 people |
| Typical use case | Small management team office (super + APM + scheduler), divided office (private office + open area), restroom-equipped crew office, civil or multi-family satellite office with a small plan-review table |
Use Cases
What An 8×28 Office Trailer Fits
The 8×28 footprint runs ~224 sq ft of interior space. That’s room for a small management team — a superintendent, an assistant project manager, and a scheduler — with a desk each and still enough open floor for a small plan-review table where two or three people can stand over a set of drawings. It’s the size where a jobsite office stops being a one-person shack and starts being a working office for a crew that runs the project together.
Where it lands well: mid-size residential and multi-family builds, light commercial and tenant-improvement projects with a small on-site team, and civil or heavy-highway work where the 8×28 serves as a satellite office on one section of a larger linear project. It also reads well as a training or classroom-style space for short site-safety or orientation sessions, since the longer footprint seats more people than the smaller single-wides. On energy and infrastructure jobs, the 8×28 works as a crew office that also has room for a restroom inside the unit.
Where it doesn’t fit: a full project HQ for a large GC team, or anything that needs a true conference room plus multiple private offices at once. If you need more than five people working in the trailer at the same time, or a dedicated conference area separate from the work floor, look at a double-wide or a 12-foot-wide unit. If your team is just a super plus one, the 8×28 is more office than you need — the 8×24 or 8×20 will cost less and still cover a two-desk setup.
Configurations
Common Configurations For The 8×28
The 8×28 is the first single-wide size where dividing the interior makes practical sense. The most common divided layout is a private office at one end — a door, a desk, and room for a one-on-one conversation — with the rest of the unit left open for two or three workstations and a plan table. On public-works projects, suppliers also build the 8×28 as two fully separate sections with their own entry doors, so the GC’s office and the owner’s-rep or inspector’s office stay physically divided. Open-plan 8×28 units are common too, when the team would rather keep the whole footprint as one shared room.
Restroom-equipped 8×28 variants are commonly available with decent inventory at this size. The footprint accommodates the plumbing, holding tank, and clearance an interior bathroom needs, so a restroom-equipped 8×28 is a realistic option rather than a special order — call it out on the quote form so the suppliers quote the right unit. This is one of the main reasons crews step up from the 8×24 to the 8×28: it’s the point where an in-unit restroom stops being a stretch.
ADA-compliant 8×28 variants are uncommon. Full ADA compliance requires an accessible ramp, interior turning clearances, and an accessible restroom, and the 8-foot width makes those clearances tight — ADA-compliant office trailers typically start at 10×40 or larger. An ADA ramp can usually be added to an 8×28 for access, but a fully ADA-compliant interior is rare at this footprint. If your jobsite needs a fully ADA-compliant office, ask the supplier directly and be prepared to size up.
Inventory note: the 8×28 sits in the heart of the rental fleet for most regional suppliers, so both new and used units are generally available. Restroom-equipped and divided-office configurations have somewhat thinner inventory than plain open-plan units, so flag those needs early. See used construction trailer purchase options for context on the buy side.
Rent Or Buy
Rent Or Buy An 8×28 — Which Makes Sense
Project duration is the first cut on this decision. Under six months on a one-off project, rent wins almost every time — you pay for the trailer only while you need it, and the supplier handles delivery, setup, and pickup. Between six and 18 months, the math gets closer to a toss-up: lease totals start to approach what you’d pay for a used unit, especially after add-ons like setup, the restroom premium, and pickup, but you avoid the resale logistics at term end. Past 18 months, or if you have recurring use across multiple jobsites, buying gets attractive.
The 8×28 is a common purchase for mid-size GCs and trades that run a stable management team across sequential projects. It’s large enough to be the company’s standing jobsite office — the unit that travels from one build to the next with the same divided layout and restroom — rather than a rental you reset every job. The used market at this size is reasonably deep, and a serviceable divided-and-restroom-equipped 8×28 holds its utility well across projects.
Tax treatment is worth a brief flag: in the U.S., a purchased office trailer used in your trade or business may qualify for Section 179 expensing or bonus depreciation under current rules. Whether either applies depends on the tax year, your jurisdiction, your overall capital-expenditure picture, and your specific situation. Don’t make a buy-vs-rent call on tax math alone — talk to your tax advisor for the math on your specific return. Also see office trailer rental options if you want the rental path costed alongside.
Quote Anatomy
What Suppliers Compare On An 8×28 Quote
An 8×28 quote has more moving parts than the smaller single-wides because restroom and divided-office options come into play at this size. The line items below are what you’ll see across suppliers, and what to compare apples-to-apples when you have multiple bids in hand on the same 8×28 spec.
| Line Item | What It Is | What To Watch |
|---|---|---|
| Base monthly rate | The trailer rental itself. New units rent for more than used; the spread between suppliers comes from age, condition, and how the specific 8×28 they have in stock is configured. | The lowest base rate is sometimes the highest total cost — delivery, setup, restroom premium, and lease minimum can flip the math. Don’t decide on this line alone. |
| Restroom premium | The add-on for an interior restroom — plumbing, holding tank, fixtures. A real differentiator at the 8×28 size. | Make sure every supplier is quoting the same restroom configuration. A “restroom-equipped” unit and a “restroom-ready” unit are not the same line item. |
| Divided-office buildout | The partition, second door, or separate-section buildout if you need the interior divided. | Sometimes bundled into the unit cost, sometimes itemized. Confirm whether the divided layout is already built into the stock unit or a custom modification with its own charge. |
| Delivery to jobsite | Round-trip transport from supplier yard to your site. Distance from the closest yard with stock 8×28 inventory is the variable. | If two suppliers are running yards in different metros, the round-trip delivery can swing meaningfully. Ask for the round-trip line item, not just one-way. |
| Setup & install | Leveling, blocking, tie-downs, step or ramp install at the door. | Sometimes bundled into base rate, sometimes itemized separately. If bundled, ask exactly what’s included so you can compare it against an itemized quote from a different supplier. |
| Lease term, minimum & pickup | Most suppliers run a minimum term on the 8×28, with longer terms dropping the monthly rate. Pickup is removal back to the yard at end of lease. | Ask about month-to-month after the minimum and whether pickup is included, a flat fee, or prorated by distance. It should be itemized, not buried in fine print. |
Note: restroom premium and the divided-office buildout are where 8×28 quotes diverge most between suppliers. Get five quotes on the same 8×28 spec — same restroom config, same divided or open layout — and those line items sort themselves out fast.
Common Questions
FAQ — 8×28 Office Trailers
What is the actual square footage of an 8×28 office trailer?
The exterior footprint is 8 feet by 28 feet, which works out to ~224 sq ft. Usable interior space is slightly less once you account for wall thickness, the HVAC unit, and the door. Note that some suppliers quote a smaller “usable” number (around 176 sq ft) using an 8×22 interior convention after the hitch and tongue, so confirm which measurement a supplier means when you compare quotes.
How many people fit in an 8×28 office trailer?
Three to five people, comfortably. The 8×28 works as a small management team office — a superintendent, an assistant project manager, and a scheduler each with a desk — plus enough open floor for a small plan-review table. It is not large enough to be a full project HQ for a large team or to hold a dedicated conference room separate from the work floor. For that, step up to a double-wide or a 12-foot-wide unit.
Can I get an 8×28 with a restroom?
Yes. Restroom-equipped 8×28 variants are commonly available with decent inventory at this size. The footprint accommodates the plumbing, holding tank, and clearance an interior restroom needs, so it’s a realistic option rather than a special order. Call out the restroom on the quote form so suppliers quote the right unit, and confirm every quote is for the same restroom configuration.
Can an 8×28 be divided into two offices?
Yes. The 8×28 is the first single-wide size where dividing the interior makes practical sense. Common layouts are a private office at one end with an open work area for the rest, or two fully separate sections with their own entry doors — the second is common on public-works jobs where the GC office and the owner’s-rep or inspector’s office need to stay separate. Open-plan 8×28 units are available too if you’d rather keep the whole footprint as one room.
Is the 8×28 ADA compliant?
Usually not. A fully ADA-compliant 8×28 is uncommon. ADA accessibility requires an accessible ramp, interior turning clearances, and an accessible restroom, and the 8-foot width makes those clearances tight. ADA-compliant office trailers typically start at 10×40 or larger. An ADA ramp can often be added to an 8×28 for access, but a fully ADA-compliant interior is rare at this footprint — ask the supplier directly and be prepared to size up if full compliance is required.
How long is delivery for an 8×28 in my area?
Typically 3-7 business days for stock units from quote acceptance to set on your pad. The 8×28 sits in the heart of most regional rental fleets, so availability is generally good. Restroom-equipped or divided-office configurations can take a little longer because they have to be sourced from a yard that has that specific build in stock, so flag those needs early.
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You submit one form with project type, size (8×28 in this case), rent or buy, delivery ZIP, project duration, and contact email. We send the request to up to 5 reputable office trailer suppliers serving your market. They submit competing quotes, typically within an hour during business days. You compare and decide. Free, no obligation. We are paid by suppliers when they win your business — you pay nothing.
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