12×60 Office Trailer For Sale
The 12×60 is the largest single wide office trailer in common circulation and the volume seller of the US market — 672 square feet, four to six people, and the biggest relocatable office you can get without moving to a two-section double wide. Rentals run $500 to $900 per month; used units sell from $12,000.
12×60 Office Trailer Specifications
| Nominal size | 12×60 |
|---|---|
| Box dimensions | 12 ft × 56 ft |
| Floor area | 672 sq ft |
| Exterior width | 12 ft — oversize load, permit required |
| Working occupancy | 4 to 6 people |
| Typical layout | 2 private offices plus open area |
| Restroom | Commonly available |
| Monthly rental | $500 – $900 |
| Buy new | $25,000 – $55,000 |
| Buy used | $12,000 – $30,000 |
Why A 12×60 Is Not 720 Square Feet
Twelve times sixty is 720. The floor is 672. The difference is the hitch.
Towable office trailers are named by their overall towing length, which includes the roughly four-foot drawbar at the front. The box — the part you can stand in — is 56 feet. Twelve by fifty-six is 672 square feet, about seven percent less than the model name implies.
This is why some suppliers list the same unit as a 12×56, and why searching that term finds stock the 12×60 search misses. They are the same trailer described two ways. If you are comparing quotes, confirm which number each supplier is quoting before you compare price per square foot, because a seven percent difference in the denominator moves the answer.
Where it actually matters. Two places. Site planning, where you need clearance for 60 feet of trailer plus truck, not 56. And square-foot pricing, where a supplier quoting on 720 looks cheaper per foot than one quoting honestly on 672 for the identical unit.
How Much Does A 12×60 Office Trailer Cost?
Buying
$25,000 to $55,000 new and $12,000 to $30,000 used. The used range is wide because this is the most common size in every national lessor’s fleet, which means it is also the most common size coming out of those fleets at the end of a depreciation cycle. Supply is good and condition varies enormously.
On a used 12×60, the age of the HVAC and the state of the roof drive more of the price difference than cosmetic interior condition does. A unit with a recently replaced roof at the top of the range is usually a better buy than a tidy one at the bottom with an original roof, because a re-roof on 672 square feet is not a small job.
Renting
$500 to $900 per month, with the low end realistic only on a longer term. Delivery, set, blocking and leveling, steps and skirting are all separate — and on a 12-foot-wide unit, delivery costs meaningfully more than on an 8-foot-wide one because the load needs an oversize permit and often a pilot car.
Break-even is about 30 months. A mid-range $700 per month against a mid-range $21,000 used purchase crosses over around the thirtieth month, before counting resale. That is longer than the 8×20’s roughly 21-month crossover, because the purchase price scales faster than the rental rate does. On a project running two years or less, renting a 12×60 is usually the right call even where buying an 8×20 would not be.
Layouts And What Fits
At 672 square feet the 12×60 is the first size where the layout decision genuinely matters, because there is enough floor to divide and not enough to divide badly.
| Configuration | Suits |
|---|---|
| Open plan throughout | A single crew working together; most flexible, least privacy |
| 2 private offices plus open area | The standard stock layout. Superintendent and PM get doors, the rest share |
| 2 offices plus small conference plus open | Where subs and inspectors get walked through drawings regularly |
| Offices plus restroom | Costs roughly 60 to 80 square feet of the floor and needs a sewer, septic or tank connection |
Four to six people is the working range. At six the open area is tight once a plan table and printer are in it, and a seventh person is the signal to look at a double wide instead. The 12×60 is the largest single wide available, so there is no next size up within this configuration.
The 12-foot width also means every room runs off one circulation path down the length. That is what stops a real conference room from fitting — a table with chairs pulled out consumes most of the width. If a meeting room is a hard requirement, the extra width of a double wide is what buys it, not the extra floor area.
Delivery, Permits And Site Requirements
The 12-foot width is the practical difference between this unit and the smaller sizes. In most states the legal load width is 8 feet 6 inches, so a 12×60 travels as an oversize load requiring a permit, frequently a pilot car, and restricted travel hours in some jurisdictions.
That is not an obstacle — thousands move every week — but it does mean:
- Delivery costs more and needs more notice than an 8-foot-wide unit. Permits are per-state on a multi-state move.
- The route matters. Turning radius, overhead clearance and any weight-restricted bridge on the approach. Worth checking before the permit is pulled.
- Site clearance is 60 feet plus the truck, not 56. Plan for the full towing length and the swing room to position it.
- A level pad the full length. Blocking absorbs inches, not slope, and a 56-foot box shows a slope that a 20-foot one hides.
- Typically a 100 to 200 amp service depending on the HVAC load. Confirm the panel spec against what the site can supply.
12×60 Office Trailer FAQ
How much does a 12×60 office trailer cost?
New units run $25,000 to $55,000 and used units $12,000 to $30,000. Renting costs $500 to $900 per month, with the low end available only on longer lease terms. Delivery, set, blocking, steps and skirting are separate, and cost more than on a narrower unit because a 12-foot-wide load needs an oversize permit.
How big is a 12×60 office trailer?
672 square feet. The box measures 12 feet by 56 feet — not 60 — because towable office trailers are named by overall towing length including a roughly four-foot hitch. That makes the usable floor about seven percent smaller than the model name suggests, which is why some suppliers list the identical unit as a 12×56.
Is a 12×56 office trailer the same as a 12×60?
Yes. The 12×56 describes the box and the 12×60 describes the overall towing length including the hitch. Searching both terms is worth doing, because suppliers index their stock under one or the other and you will miss units otherwise.
How many people fit in a 12×60 office trailer?
Four to six. At six the open area gets tight once a plan table and printer are in it. A seventh daily occupant is the point to look at a double wide, since the 12×60 is the largest single wide available and there is no next size up in this configuration.
Is it cheaper to rent or buy a 12×60 office trailer?
Break-even lands around 30 months, comparing a mid-range $700 monthly rental against a mid-range $21,000 used purchase, before counting resale value. That is notably longer than the 8×20’s roughly 21-month crossover, because purchase prices scale faster than rental rates. On a project of two years or less, renting is usually the better call.
Does a 12×60 office trailer need an oversize permit?
Yes. The legal load width in most states is 8 feet 6 inches, so a 12-foot-wide trailer moves as an oversize load with a permit, often a pilot car, and sometimes restricted travel hours. Permits are issued per state, so a multi-state delivery needs one from each.
Can a 12×60 office trailer have a bathroom?
Yes, and restroom-equipped 12x60s are commonly stocked, unlike the smaller sizes. Expect it to consume roughly 60 to 80 square feet of the floor and to require a sewer or septic connection, or a holding tank on a pumping schedule. On short construction projects many contractors skip it and pair the trailer with portable toilets instead.
Can you fit a conference room in a 12×60?
Not comfortably. The 12-foot width means every room runs off a single circulation path down the length, and a conference table with chairs pulled out consumes most of that width. A small meeting area works; a genuine conference room needs the 24-foot width of a double wide, where rooms can sit on both sides of a center hall.
Compare 12×60 Office Trailer Quotes
Tell us whether you want a 12×60 office trailer for sale or for rent and where it is going, and we will connect you with suppliers who stock this size. Because delivery on a 12-foot-wide unit carries permit and escort costs that vary by route, comparing the full delivered price rather than the monthly rate is what shows the real spread. There is no cost and no obligation.
Related Guides
- Office Trailer Rental — monthly rates and lease terms across every size
- Office Trailers For Sale — new and used pricing, where to buy, what to inspect
- Double Wide Office Trailers — the next step up when 672 square feet is not enough
- 8×20 Office Trailer — the smallest common size