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Modular Restroom Buildings & Prefabricated Bathrooms

Factory-built, code-compliant restroom facilities for warehouses, construction sites, parks, and commercial properties. Plumbing-ready, ADA-accessible, and installed in days — not weeks.

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Modular restroom building ready for installation

ADA Compliant

Accessibility

IPC Plumbing

Code Compliance

1–3 Days

Installation

Indoor & Outdoor

Configurations

Why Choose Modular Restroom Buildings?

OSHA requires employers to provide toilet facilities for all workers, with minimum fixture counts based on workforce size. For warehouses, distribution centers, and manufacturing plants, adding restroom capacity through conventional construction means weeks of plumbing, concrete, framing, and finishing — plus the disruption of breaking through existing floors for drain lines. Modular restrooms eliminate this by delivering fully built bathroom modules with fixtures, plumbing, and finishes already installed.

Material Handling USA delivers modular restroom buildings for both interior (in-plant) and exterior (freestanding) installations. Every unit includes commercial-grade fixtures, ADA-compliant stall configurations, proper ventilation, and plumbing connections designed for quick hookup to your facility’s water supply, drain, and vent systems. From a single two-fixture restroom to multi-stall facilities serving hundreds of employees, we build to your specific requirements.

Modular restroom module interior with fixtures

Restroom Configurations

We build modular restrooms for every application — from compact single-user units to large multi-fixture facilities serving high-traffic locations.

Single-User ADA Restrooms

Fully enclosed, ADA-compliant single-user restrooms ideal for offices, lactation areas, and small facilities. Include toilet, sink, grab bars, accessible clearances, and ventilation in a compact 6×8 or 8×8-foot module.

Multi-Fixture Employee Restrooms

Two to six fixtures with separate stalls, urinals, sinks, and a hand-washing station. Sized for OSHA compliance based on your employee headcount. Standard commercial finishes withstand heavy industrial use.

Exterior Freestanding Restrooms

Weather-resistant, vandal-resistant outdoor restroom buildings for parks, campgrounds, construction sites, and commercial properties. Concrete, steel, or modular panel construction with anti-graffiti coatings.

Shower & Locker Room Combos

Restroom modules combined with shower stallsand locker areas for facilities where employees need decontamination, post-shift cleanup, or gym-style amenities. Include hot water, floor drains, and moisture-resistant finishes.

Construction Standards & Fixtures

Commercial-grade fixtures inside a modular restroom

Every modular restroom is built with commercial-grade fixtures: vitreous china toilets (1.28 GPF water-efficient), stainless steel sinksand countertops, wall-mounted soap and paper towel dispensers, and shatter-proof mirrors. Floor drains with proper slope ensure complete drainage during cleaning. Walland floor finishes use FRP (fiberglass reinforced plastic) panels or ceramic tile over waterproof substrates for long-term moisture resistance.

Plumbing systems comply with the International Plumbing Code (IPC) and local amendments. All drain, waste, and vent (DWV) piping is properly sized and configured for gravity flow to your facility’s main sewer connection. Water supply lines include shut-off valves, check valves, and backflow prevention as required. Ventilation meets code requirements for air changes per hour with either mechanical exhaust fans or passive ventilation depending on installation location.

Benefits of Modular Restrooms

✓OSHA Compliance — Meet federal OSHA toilet facility requirements (29 CFR 1910.141) with properly sized, accessible restrooms for your entire workforce.

✓ADA Accessibility — Every configuration is available with ADA-compliant stalls, grab bars, accessible sinks, proper clearances, and barrier-free entry.

✓Rapid Installation — Restroom modules arrive with fixtures, plumbing, and finishes complete — connect to water, sewer, and electrical for same-week occupancy.

✓No Floor Cutting — In-plant modular restrooms can use macerating pump systems that eliminate the need to saw-cut concrete floors for below-grade drain lines.

✓Relocatable — When your facility layout changes, the restroom module moves with it — including all plumbing connections.

✓Low Maintenance — Commercial-grade fixturesand FRP wall panels are designed for heavy use and easy cleaning — reducing long-term maintenance costs.

ADA-compliant modular restroom with accessible fixtures

OSHA Minimum Toilet Requirements

OSHA Standard 29 CFR 1910.141 requires minimum toilet facilities based on the number of employees per shift.

Employees (per shift)	Minimum Toilets	Recommended Modular Size	Estimated Cost
1–15	1	6×8 or 8×8 ft single-user	$10,000–$18,000
16–35	2	8×12 ft two-fixture	$18,000–$28,000
36–55	3	10×16 ft three-fixture	$25,000–$38,000
56–80	4	12×20 ft four-fixture	$35,000–$50,000
81–110	5	12×24 ft five-fixture	$42,000–$60,000
111–150	6	16×24 ft six-fixture	$50,000–$75,000

Frequently Asked Questions

How does the plumbing connect to our existing system?

Modular restroom modules come with plumbing stubbed to specific connection points — typically at the base of the unit. Your plumber connects the water supply lines, drain/waste/vent piping, and vent stack to your facility’s existing plumbing infrastructure. We provide connection specificationsand coordinate with your plumbing contractor.

Do you need to cut the concrete floor for drain lines?

Not necessarily. Macerating pump systems (like Saniflo commercial units) allow above-floor drain connections that pump waste to the nearest floor drain or sewer lateral — eliminating concrete saw-cutting. For permanent installations, conventional below-grade connections are recommended.

Are modular restrooms ADA compliant?

Yes. All restroom configurations are available with full ADA compliance including 60-inch turning radius clearance, accessible stall dimensions (60×60-inch minimum), grab bars at proper heights, accessible sink heights, and barrier-free entry with proper door widthsand hardware.

How many fixtures do I need for my workforce?

OSHA Standard 29 CFR 1910.141 specifies minimum fixture counts based on the number of employees per shift. For 1–15 employees, one toilet is required. Requirements increase with each bracket up to six or more toilets for 111–150 employees, plus one additional for every 40 employees beyond that.

Can modular restrooms be used outdoors?

Yes. Exterior modular restrooms are built with weather-resistant construction including insulated panels, waterproof roofing, freeze-protected plumbing, and vandal-resistant features. They’re used at parks, athletic facilities, construction sites, and commercial properties where permanent outdoor restrooms are needed.

Explore More Modular Building Solutions

In-Plant Offices Guard Booths & Shacks Modular Cleanrooms Two-Story Offices Equipment Enclosures Exterior Buildings Break Rooms & Conference Ballistic Buildings

Add Restroom Capacity — Without the Construction Headaches

Get a free quote for modular restroom buildings — designed, delivered, and installed by Material Handling USA.