Our History

An industry leader for 50+ years

Williams Scotsman is a space problem solver. Located throughout the United States, Canada and Mexico, we provide businesses and organizations a temporary environment to learn, live, recover, work and play. Our product line includes mobile office trailers, portable classrooms, modular complexes and panelized modular units that can be used for whatever your business needs them to be. Our storage containers can house whatever you need safely and securely. We never lose sight of the fact that our products and services must remain current and effective for what you, our customer, needs.

We've been dealing with temporary  space needs for quite a while – since 1955 to be exact – when Albert Vaughn (“A.V.”) Williams patented the technology used to build a mobile office. With more than 30-million square feet of assets ready to mobilize, we deliver solutions that run the gamut from a simple construction office trailer to a multi-unit complex – and everything in between.

Headquartered in the historic Fell’s Point area of Baltimore, Maryland, we are proud to be the modular supplier of choice for the construction, education, healthcare, government, retail, commercial, transportation, security and energy sectors. With over a half century of innovative history, organic growth and strategic acquisitions, our customer base has grown to more than 25,000 across all industries. Our customers are served by dedicated sales and service teams operating branches that are an integral part of their local communities in nearly 100 locations.


1944: Williams Mobile Offices introduces an 8’ wide construction trailer that can be towed behind a car

1945: Scotsman Manufacturing Company produces recreational vehicles and specialty units for the movie business

1955: Williams Mobile Offices is incorporated

1965: First Double Wide Mobile Office

1967: First Modular Building (6-55 x 10)

1990: Merger of Scotsman and WMO

1999: First Canadian branch opens

2004: Expansion into Mexico; GE California DSA Classrooms acquisition; Expansion into Europe

2005: Williams Scotsman IPO; traded on NASDAQ

2006: Wiron acquisition in Spain

2007: Hawaii Modular Space acquisition

2007: Merger of Williams Scotsman and Algeco; return to private company

2010: reMod, a greener modular line, is introduced

2013: VAPS expands customer's value with products and services beyond modular buildings

2014: Remote Accommodations established in Canada

2015: Flex, an innovative panelized product, is introduced in the United States

2017: Double Eagle acquires Williams Scotsman