CAT CLASS: HQ-10887

1,440+ sq ft Mobile Office Trailer

The 1,440+ sq ft mobile office trailer class encompasses double-wide units and multi-section modular complexes designed to house complete project management teams and support staff. These represent the largest rung on the mobile office ladder, offering floor plans from 1,440 to over 6,400 sq ft and heights ranging from 40 to 76 ft in assembled configurations. This size class is deployed when a full-scale on-site office presence is required for major construction projects, industrial facilities, or large-scale temporary operations.

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Pick a size class — capacity and reach differ across the range.

Key specifications

Specification	Typical range	What it means
Floor area	1,440–6,468 sq ft	Accommodates multiple private offices, conference rooms, open workspaces, and support facilities in single or multi-building configurations.
Max height	40–76 ft (12.2–23.2 m)	Overall height measurement includes multi-section assemblies and modular complexes; individual trailers typically 10–14 ft tall.
Configuration	Double-wide or multi-unit modular	Most units consist of two or more sections joined on site; largest installations connect multiple buildings.
Layout capacity	15–60+ workstations	Supports full departmental teams with dedicated spaces for management, engineering, administration, and meeting areas.

How to choose

This size class is appropriate when project scope requires housing an entire management team, multiple departments, or coordinated office functions that exceed what a single-wide can provide. Operations needing distinct zones for management offices, engineering workspaces, conference facilities, and support areas justify the logistical complexity of double-wide or modular installations. The 600-1,440 sq ft Mobile Office Trailer serves projects with smaller teams or fewer spatial requirements. When floor area exceeds 3,000 sq ft, specifiers typically evaluate multi-building modular campus configurations rather than single double-wide units.

What this size handles

Large infrastructure construction projects requiring on-site offices for general contractor, owner's rep, and multiple subcontractor teams
Industrial plant construction with separate spaces for project management, safety coordination, quality control, and administrative staff
Major commercial developments needing sales centers, model coordination areas, and contractor liaison offices
Mining or energy sites establishing long-term operational headquarters with divisional offices and meeting facilities
Government or military installations requiring secure administrative complexes with controlled access zones
Disaster recovery operations setting up multi-agency coordination centers with dedicated workspaces for emergency management teams

Safety & operation

Multi-section assemblies require structural engineer review for wind and seismic tie-down specifications; marriage walls between sections must meet local building codes
Egress planning must account for occupancy loads exceeding 50 persons in most installations; multiple exits and posted evacuation routes required
ADA compliance mandates accessible entries, interior circulation, and restroom facilities; ramps and landings must meet slope and width specifications
Fire suppression systems or extinguisher placement follows local fire marshal requirements for Type V construction and assembly occupancy classifications

Transport & logistics

Double-wide sections transported as two separate single-wide trailers, each typically 60–80 ft long and 12–16 ft wide, requiring heavy-duty tractor units and wide-load permits
Multi-section complexes delivered in multiple shipments and assembled on prepared foundations with crane or forklift support
Site preparation includes engineered foundations, utility trenching, and clear assembly area with overhead clearance for crane operations when applicable

Power & supply

200–400 amp electrical service typical for full installations, often requiring utility company transformer and dedicated service panel for each major section
Multi-section complexes may require multiple service drops or distribution from central electrical room to individual buildings
HVAC systems operate on 208/240V three-phase power; installations often include separate metering for utilities accounting

Frequently asked

How long does double-wide assembly take on site?

Typical double-wide installations require 2–5 days from delivery to occupancy-ready status, including foundation setup, section placement, marriage wall assembly, utility connections, and finish work. Multi-building modular complexes may extend to 1–3 weeks depending on configuration complexity.

What foundation is required for units over 3,000 sq ft?

Installations above 3,000 sq ft generally require engineered pier-and-beam or continuous footing foundations rather than simple blocking. Soil reports and structural drawings ensure adequate load distribution and meet local building department requirements for semi-permanent structures.

Can these units be relocated once installed?

Double-wide units can be disassembled and relocated, though the process involves reversing the marriage, disconnecting utilities, and re-permitting transport and setup. Modular complexes with three or more sections face greater logistical and cost considerations for relocation versus ordering new units for a second site.

Compare popular models

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Normalised to the same units. A dash means the figure was not published.

Model	Load capacity	Max height
Mobile Modular 24x60 Double Classroom (DSA)	-	60 ft (18.3 m)
Mobile Modular 24x60 Double Classroom (HCD)	-	60 ft (18.3 m)
Mobile Modular 36x40 Specialty Education Building (DSA)	-	40 ft (12.2 m)
Mobile Modular 48x40 Specialty Education Building (DSA)	-	40 ft (12.2 m)
Modular Genius MU002EXXX	-	64 ft (19.5 m)
Modular Genius MU004E003	-	72 ft (21.9 m)