What Is An Inplant Office?

As companies grow, space constraints can quickly become a challenge. While expansion is a welcome sign of success, this growth often comes with a need to create new office space within an existing facility. And for many businesses, traditional construction isn’t practical due to limited time, budget, or available square footage.

That’s why Panel Built’s inplant modular offices provide an ideal solution. These systems offer a fast, flexible, and minimally disruptive way to expand office space within your facility, helping you meet growth demands without interrupting daily operations.

An inplant office is a prefabricated modular structure designed and built offsite for fast, convenient installation inside an existing facility. Panel Built’s inplant offices are constructed using our signature 3" thick composite panelized wall system, which is typically made with a polystyrene core and vinyl-covered gypsum to ensure insulation and sound dampening. For specialized requirements, we also offer additional panel composition options, including enhanced fire resistance, thermal performance (R-values), and sound transmission control (STC ratings).

To enable fully customized layouts, our modular panels are joined using a binder-post extrusion system, which not only secures the walls but also serves as a built-in raceway for electrical and data wiring. Each inplant office can also be delivered with a dedicated electrical load center and HVAC system, providing everything needed for a fully functional, climate-controlled workspace.

Inplant offices are a fast, prefabricated solution for adding office space to your facility—but their value doesn’t end with speed. Once installed, these modular buildings offer long-term flexibility and a strong return on investment.

Thanks to Panel Built’s panelized design, inplant offices can be easily reconfigured, relocated, or even uninstalled and repurposed elsewhere. Unlike traditional stick-built construction, our modular systems are customized to evolve alongside your facility’s changing needs.

Panel Built’s modular inplant offices offer a flexible, cost-effective alternative to traditional construction—with advantages that extend beyond quick installation.

Increase Space & Reduce Cost

• Easily expand inplant offices by attaching to existing modular walls—reducing material needs and costs

• Maximize vertical space by incorporating a second story with load-bearing roof panels or installing an office on a mezzanine floor

Adaptable & Reusable

• Reconfigure, relocate, or reuse offices as your facility evolves

• Customize layouts to fit your workflow and space constraints

Financial Advantages

• Classified as tangible personal property

• Depreciates over 7 years vs. 39 for conventional builds

• Faster return on investment

Versatile Applications

• Panel Built's high-quality inplants can be used as break rooms, restrooms, equipment enclosures, cleanrooms, SCIFs, and more.

Need more space fast? Contact our team to find the right modular solution for your facility. 

Panel Built, Inc. is a modular construction company with over 25 years of industry experience. From modular offices to military tower systems, we specialize in the design and engineering of custom structures for commercial, industrial, military, and government clients. At Panel Built, our mission is simple: to solve our customers' space needs with excellence and outstanding service.