Modular Office Building — Prices, Sizes and Delivery
6 configurations priced new, used and monthly. Delivered and set nationwide in a 30 to 90 day production window.
Modular Office Building — price matrix
New, used and monthly rental across every configuration we build. Researched market estimates, July 2026.
| 8 x 20 (160 sqft)new · used · monthly | $18,900$11,400 used · $795/mo |
| 10 x 40 (400 sqft)new · used · monthly | $31,200$18,900 used · $1,150/mo |
| 12 x 40 (480 sqft)new · used · monthly | $34,600$21,200 used · $1,290/mo |
| 12 x 60 (720 sqft)new · used · monthly | $48,900$29,400 used · $2,450/mo |
| 24 x 40 double-wide (960 sqft)new · used · monthly | $78,400$46,800 used · $3,200/mo |
| 24 x 60 double-wide (1,440 sqft)new · used · monthly | $112,000$67,200 used · $4,350/mo |
Estimates for budgeting. Final pricing depends on configuration, finish level, site conditions and freight distance.
Modular Office Building — what you are buying
The modular office building is one of the most requested configurations we quote, and it is also one of the most inconsistently priced across the industry. Suppliers publish a per-square-foot figure, leave out foundation, freight, crane and permitting, and the number a buyer eventually pays lands well above what they planned around. We publish the unit price and the site costs separately so the comparison is honest.
| Typical cost per square foot (new) | $185 |
| Premium specification per square foot | $240 |
| Configurations priced | 6 |
| Price range (new) | $18,900 – $112,000 |
| Production window | 30–90 days, queue dependent |
| On-site set | 2–8 hours typical per unit |
| Delivery | All 50 states · $7 per loaded mile |
New versus used versus rental
New units carry full warranty, current code compliance and the finish level you specify. Used and refurbished inventory typically runs forty to sixty percent below new, with the trade-off being available configurations rather than condition — a refurbished unit is stripped, inspected, repaired and re-finished, but you take the floor plan that exists. Rental makes sense under roughly eighteen months of use; past that point, cumulative rent generally exceeds purchase price and you own nothing at the end. Run the arithmetic on your actual duration before defaulting to rental because the monthly number feels smaller.
What actually drives the price
Size is the obvious variable, but it is rarely the one that moves a quote the most. Finish level, mechanical capacity, code requirements in your jurisdiction, and site conditions all shift the total more than a few extra square feet. A unit destined for a high-wind coastal county needs impact-rated openings and engineered tie-downs. A unit for a site with no municipal sewer needs a septic system. Neither of those is visible in a per-square-foot figure, which is exactly why we break them out.
Lead time and why it is a range
We quote 30 to 90 days as a production window rather than a delivery date, and the reason is supply and demand. Factory queue depth changes weekly. Material lead times on steel, windows and finish goods have tightened this year and seasonal demand compresses the calendar heading into spring. A slot confirmed today holds at the window we quote. A slot considered for six weeks usually reprices, because the block it was going into has filled.
Every configuration priced
8 x 20 (160 sqft)
At 8 x 20 (160 sqft), expect roughly $18,900 new, $11,400 refurbished, or $795 per month on rental. This size typically clears standard highway transport without special permitting, which keeps freight predictable.
10 x 40 (400 sqft)
At 10 x 40 (400 sqft), expect roughly $31,200 new, $18,900 refurbished, or $1,150 per month on rental. This is one of the more common configurations we ship and inventory moves quickly on it.
12 x 40 (480 sqft)
At 12 x 40 (480 sqft), expect roughly $34,600 new, $21,200 refurbished, or $1,290 per month on rental. This size typically clears standard highway transport without special permitting, which keeps freight predictable.
12 x 60 (720 sqft)
At 12 x 60 (720 sqft), expect roughly $48,900 new, $29,400 refurbished, or $2,450 per month on rental. This configuration balances usable space against freight cost well, which is why it is frequently specified.
24 x 40 double-wide (960 sqft)
At 24 x 40 double-wide (960 sqft), expect roughly $78,400 new, $46,800 refurbished, or $3,200 per month on rental. This is one of the more common configurations we ship and inventory moves quickly on it.
24 x 60 double-wide (1,440 sqft)
At 24 x 60 double-wide (1,440 sqft), expect roughly $112,000 new, $67,200 refurbished, or $4,350 per month on rental. This is one of the more common configurations we ship and inventory moves quickly on it.
Why buy from us
Waste that does not become your problem
A production line orders in bulk, cuts to optimized lengths, and recycles offcuts across dozens of units. Site-built framing typically sends fifteen to twenty percent of delivered material to a dumpster you paid to rent and paid again to haul. Lower waste is part of why the per-square-foot number comes in lower, and it is the part nobody puts in the brochure.
Labor you do not have to chase
The trade shortage is the single biggest schedule risk in construction right now. Factory production concentrates skilled labor in one facility where crews repeat the same operations daily instead of assembling a new subcontractor roster for every project. You are not waiting three weeks for an electrician to have an opening.
Engineering that survives transport
A module has to be structurally sound enough to be lifted by crane, hauled at highway speed, and set without racking. That requirement forces heavier framing, more fasteners and engineered connections than code minimum for a comparable site-built structure. The transport requirement quietly produces a stronger building — which is exactly why factory-built performs well under high wind loads.
Cost certainty instead of change orders
The reason site-built budgets drift is that the price is discovered as the work proceeds. Factory pricing is set when the design is locked, because the production cost of a known module is known. The variable that remains is site work — foundation, utilities, access — which is why we quote that separately and in the open instead of burying it.
Modular Office Building questions
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