How to Size a Mobile Office for a Saskatchewan Construction Crew

By Kelvin Steinke  |  Updated August 2026

Sizing is where mobile office projects go right or wrong. Order too small and the crew works on top of each other, meetings spill outside, and the unit gets replaced within a season. Order too large and you pay to haul, heat, and power space that sits empty. Neither is expensive knowledge to avoid; it just takes matching the unit to the crew before you buy.

Saskatchewan sites make this more pressing because they are growing. Building construction investment rose 21.7% from May 2024 to May 2025, and mining crews are expanding, so the office that fit last year’s team may not fit this year’s. Getting the size right the first time saves a mid-project swap.

This guide walks through sizing a mobile office by people, layout, and site conditions, and it builds on the main Saskatchewan mobile office buying guide. Parkland Modular supplies units from single rooms to joined multi-section offices, so the size follows the job rather than the other way around.

Start With Headcount

The first number is how many people work in the office at once. Not the total crew, the desk count: supervisors, coordinators, safety, and admin who need a workspace, versus field workers who only pass through. Size for the people who sit down, then add a margin for visitors and growth.

Workspace planning gives a useful baseline. JLL’s 2024 Office Fit-Out Guide recommends 150 to 175 square feet per person for a modern office, and CBRE benchmarks range from 135 to 225 square feet per employee depending on how the space is used. For a site office, the lower end of that range is realistic, because layouts are practical rather than plush. As a rule of thumb, plan about 150 square feet per desk-based person, then add the shared rooms below.

So a five-person office core needs roughly 750 square feet of desk space before common areas, which points toward a mid-size single-wide or a small multi-section unit. A ten-person core lands near 1,500 square feet plus shared space, which usually means joined units. Counting desks honestly at the start prevents the most common sizing mistake.

Add the Rooms the Job Needs

Desks are only part of a working office. Most Saskatchewan site offices also need a meeting or muster room for safety briefings and toolbox talks, a washroom, storage for plans and equipment, and often a lunch or break area. Each of these is space beyond the per-person desk allowance, and skipping them is why an office that looked big enough on paper feels cramped in practice.

A meeting room that holds the crew for a safety talk is frequently the deciding factor on size, because it has to fit more people than the daily desk count. If your briefings gather 15 workers, the office needs a room for 15 even if only five sit there all day. Factoring the muster room in early often pushes a project from a single unit to a multi-section layout, which is better learned before delivery than after.

Storage is the quiet space-eater. Plan sets, survey gear, safety equipment, and records all need somewhere to live, and on a site with no nearby building the office absorbs all of it. Budget a dedicated storage area rather than letting boxes crowd the desks, and add a small entry or mud area if crews come in from a muddy or snowy yard, which is most Saskatchewan sites for much of the year. These practical rooms rarely show up in a per-person calculation, yet they decide whether the finished office works or feels tight from week one.

Match the Size to the Site

Where the office sits shapes the size too. A remote Saskatchewan site, far from town, tends to need a larger, more self-contained office because staff cannot pop into a nearby building for a washroom, a meeting, or shelter. On a remote lease, the mobile office is the whole facility, so it carries functions an urban site would spread across several buildings.

Access also matters. A tight or rough site may limit how wide a unit can be delivered, favoring several smaller units over one large one, while an open yard can take a wide multi-section office in one drop. On the biggest sites, particularly Saskatchewan’s potash and uranium operations, offices scale to sizable administrative crews. If security or interior width is also in play, the comparison of mobile office versus container office is worth reading alongside this one.

8 Sizing Facts Worth Knowing

Common Sizes and What They Fit

Mobile office units follow a rough ladder. A single 8×20 unit, around 160 square feet, suits one or two people or a small satellite office. A 10×40 or 12×40 single-wide, roughly 400 to 480 square feet, handles a small crew with a desk area and a modest meeting space. A 12×60 unit, near 720 square feet, gives a mid-size crew room for several offices and a washroom.

Beyond that, joined units are the answer. Two or more sections combined create 1,000 to 2,000-plus square feet with multiple private offices, a full muster room, a washroom, and a break area, which is the practical setup for a 15-person-plus administrative core on a large project. Because a relocatable office lasts about 40 years, sizing slightly ahead of today’s crew is usually the cheaper long-run choice than replacing a unit that was ordered too tight. Units across this range are available in current modular inventory.

Buy, Lease, or Rent-to-Own the Right Size: Parkland Modular

Parkland Modular supplies mobile offices across the full size range in Saskatchewan, from single units to joined multi-section offices, and helps match the footprint to your crew before you commit. Buy outright for a long-term need, lease for a fixed-term project, or rent-to-own to spread the cost toward ownership. Because the company handles delivery and can join units on site, scaling up for a bigger crew is a planned step rather than a scramble. The result is an office sized for the work, delivered ready to use, and built to serve for decades.

Frequently Asked Questions

How much office space do I need per worker in a Saskatchewan mobile office?

Plan roughly 150 square feet per desk-based person as a working baseline. JLL’s 2024 guidance recommends 150 to 175 square feet per person, and CBRE benchmarks run 135 to 225 depending on layout. A site office usually sits at the lower end because the design is practical. Remember to count only the people who work at a desk in the office, not the whole crew, then add space for a meeting room, washroom, and storage on top of the per-person figure.

What size mobile office do I need for a 10-person Saskatchewan crew?

For a ten-person desk core, plan around 1,500 square feet of workspace at roughly 150 square feet each, then add a meeting room, washroom, and storage. That typically means joined multi-section units rather than a single trailer. If only five of the ten sit at desks and the rest are field workers passing through, a 12×60 unit plus a muster room may be enough. Counting desks versus field staff honestly is what sets the real size.

What mobile office sizes are available in Saskatchewan?

Units commonly run from a single 8×20, about 160 square feet, up to a 12×60 near 720 square feet, with joined multi-section offices reaching 1,000 to 2,000-plus square feet. A single-wide suits small crews; combined units handle larger administrative teams with multiple offices, a full meeting room, a washroom, and a break area. Parkland Modular stocks a range across this ladder and can join units on site, so the size follows the crew rather than forcing a compromise.

Can I join multiple mobile office units together in Saskatchewan?

Yes. Joining two or more units is the standard way to build a larger office, creating 1,000 to 2,000-plus square feet with several private offices, a muster room, a washroom, and a break area. Joined units are the practical setup for a 15-person-plus core on a large Saskatchewan project. A supplier that handles delivery and site setup can combine units as part of installation, so scaling up is a planned step rather than an afterthought.

What layout should a construction site mobile office have?

Most site offices need a desk area sized to the daily staff, a meeting or muster room large enough for safety briefings, a washroom, and storage for plans and equipment, plus a lunch or break space on remote sites. The muster room is often the deciding factor, because it must fit more people than the daily desk count. Planning these rooms up front, rather than just counting desks, is what keeps the finished office from feeling cramped.

Do I need a bigger mobile office for a remote Saskatchewan site?

Usually yes. On a remote site far from town, the mobile office is the whole facility, so it carries functions an urban site would spread across several buildings, from washrooms to meeting space to shelter. That pushes the size up compared with an in-town site where staff can use nearby buildings. Site access can pull the other way, though, favoring several smaller units over one wide one if the approach is tight. Both factors are worth weighing before delivery.

Can I expand a mobile office as my Saskatchewan crew grows?

Yes. Because units can be joined, an office can grow by adding sections as the crew expands, which suits Saskatchewan projects that scale up over time. Planning for it at the first installation, by leaving room and matching unit types, makes later expansion straightforward. Since a relocatable office lasts about 40 years, sizing slightly ahead of today’s headcount is often cheaper long term than replacing a unit that was ordered too small. Parkland can plan the expansion path with you.

How many mobile office units can Parkland join together for a large Saskatchewan crew?

Parkland Modular can combine multiple units into a single larger office, scaling to the administrative crews found on major Saskatchewan projects such as mining and infrastructure sites. Joined layouts reach 1,000 to 2,000-plus square feet with multiple offices, a full muster room, a washroom, and break space. The company handles delivery and on-site setup, so building a large office from several sections is a coordinated step. Contact us with your crew size to plan the right configuration.