Guard Booths & Buildings

Outdoor Equipment Enclosures

Modular Inplant Offices

Modular Walls & Partitions


Guard Towers

Sports Video Towers

Prefabricated Shelters & Vestibules

Welcome to Porta-King Building Systems.

Since 1969 our modular inplant offices, mezzanines, outdoor equipment enclosures, and guard booths & buildings have been used for thousands of unique construction applications across North America and throughout the world. We provide our customers with cost effective, highly functional, easy to assemble alternatives to conventional construction.

Porta-King Building Systems offers more prefabricated and modular buildings than any other manufacturer. We offer five different types of prefabricated buildings and shelter systems that include high-level ballistic rated construction. We manufacture eight different types of modular wall systems, structural steel mezzanines and towers. All of these products have attributes that support the efforts of those companies and organizations that want to incorporate a sustainable design philosophy into their business.

We believe the key to our success has been our ability, and willingness, to adapt to new industry trends. Since our inception we have responded to our customers by introducing many “industry firsts” to address these developing trends in the modular and prefabricated construction industry. This includes new products, modification to existing products which includes adaptation to address new building and energy code requirements. Learn how our experience, quality and service can help your organization with versatile and cost effective modular building solutions.

Committed to creating modern, innovative, cost-effective, and quality prefabricated buildings & structures since 1969

Porta-King Blog

Custom Designed Guard Booths For Semi-Conductor Manufacturer

Porta-King supplied two custom-designed guard booths to a West Coast based manufacturer of semi-conductors. These portable guard booths serve to control access points to their world headquarters corporate campus parking facility. Custom Portable Guard Booth Features The guard booth featured in the image above controls access as employees and guests enter the parking area. A […]

Office Partitions: Transforming An Open Office Into Private Workspaces

As your business grows, it can be difficult to find space for new employees while still providing for all of their needs. Modular design makes it easier than ever to create a flexible workspace that can change with your business. You don’t have to find a brand new office – you can simply rent an […]

Keeping Security Guards Safe & Comfortable With Prefabricated Guard Booths

In order for security guards to do their jobs effectively, they must be comfortable no matter the weather. That’s why Porta-King’s prefabricated guard booths are designed to meet your unique needs in addition to keeping occupants safe and comfortable.

guard towers and modular guard buildings with schematics