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31 Years
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Custom Modular Buildings & Prefabricated Structures | Panel Built
Since 1995, Panel Built has been a trusted leader in designing and manufacturing fully tailored modular buildings for a variety of industries. Founded by brothers Pat and Mike Kiernan, our company was built on the vision of making prefabricated buildings more accessible and reliable. We operate from state-of-the-art manufacturing facilities and deliver custom modular solutions engineered to exact client specifications. Our product line includes security booths, modular cleanrooms, mezzanine offices, observation towers, and ballistic-rated guard houses. We serve industries such as manufacturing, government, healthcare, education, and commercial sectors. Our mission emphasizes solving customers' space needs with excellence and great customer service.

We pride ourselves on the fastest lead times in the industry, 100% custom projects, and a streamlined sales process. Our dedicated team ensures exceptional communication and project management from concept to installation. We are one of the few companies offering 3D video renderings during the proposal phase, enabling clients to visualize solutions confidently. Client testimonials consistently highlight our high-quality products, responsiveness, and top-tier customer service. Our partnerships with industrial, military, and commercial clients demonstrate our commitment to meeting diverse project requirements efficiently.
Services
Modular Offices Lactation Rooms Cleanrooms Security Booths Prefab Buildings Ballistic Buildings Transit Shelters Steel Canopies Barrier Rails Structural Steel
Details
  • Year established: 1995
Highlights and features
  • We offer the fastest lead times in the modular building industry.
  • Every project is engineered to your exact specifications.
  • Our team provides seamless communication from concept to installation.
  • We include 3D video renderings during the proposal phase.
What people say
High-quality products Responsiveness Top-tier customer service Delivered on time Exceeded expectations
Services
Modular Offices
Our modular offices provide flexible, fully customized workspace solutions engineered to meet specific client requirements. These structures optimize floor space while maintaining durability and aesthetic appeal. Ideal for commercial, industrial, and government applications, they feature rapid deployment and seamless integration with existing facilities.
Ballistic Buildings
Ballistic-rated guard houses and security booths offer enhanced protection for personnel and assets in high-risk environments. Designed to withstand extreme threats, these structures combine safety features with functional layouts. Commonly used by military, law enforcement, and critical infrastructure sectors for perimeter security and monitoring operations.
Cleanrooms
Prefabricated cleanrooms maintain strict contamination control standards for pharmaceutical, healthcare, and advanced manufacturing applications. Our modular designs ensure compliance with industry-specific regulations while enabling rapid installation. Features include HEPA filtration systems, seamless interiors, and customizable airflow management.
Structural Steel
Custom structural steel components provide robust support for industrial mezzanines, platforms, and large-scale facilities. Engineered for strength and longevity, these solutions accommodate heavy loads and complex architectural requirements. Applications include manufacturing plants, warehouses, and multi-level commercial spaces.
Transit Shelters
Durable transit shelters enhance passenger comfort and safety at transportation hubs. Our modular designs offer weather protection, vandal-resistant materials, and ADA-compliant accessibility features. Commonly installed at bus stops, train stations, and airport terminals for both temporary and permanent use.
People
Pat Kiernan
Co-Founder
Co-founded Panel Built in 1995 with his brother Mike, bringing over 25 years of modular construction expertise. Focused on operational excellence and innovation in prefabricated building solutions.
Mike Kiernan
Co-Founder
Co-founded Panel Built in 1995, driving product development and customer relationships. Combines technical knowledge with industry insights to expand the company's capabilities in custom modular structures.
Questions
What industries do Panel Built's modular solutions serve?
Our products support manufacturing, government/military, healthcare, education, and commercial sectors with customized space solutions.
How customizable are your prefabricated buildings?
Every project is 100% engineered to your specifications, including dimensions, materials, finishes, and specialized features.
What makes your lead times faster than competitors?
Our streamlined production process and inventory management system ensure quicker delivery without compromising quality standards.
Do you provide visualization tools during planning?
Yes, we offer 3D video renderings during proposal phase to help clients visualize final installations before production begins.
How does the installation process work?
Our team coordinates logistics and on-site assembly, ensuring minimal disruption to your operations during installation.
What warranty options are available?
Standard warranties cover structural components, with optional extended coverage plans available for mechanical systems and finishes.
Reviews (3)
Gary Lee
Jun 18, 2021 Report
THIS DAY 8/14/20 I NEEDED A SMALL DRILLING JOB DONE, COULD NOT DO IT WITH MY DRILL BITS, COULD NOT FIND ANYONE TO DO THIS ON MY VERY HARDENED STEEL. WENT TO PANEL BUILT, MET SOME VERY NICE FOLKS. MICHELLE AND AMY. ETHAN HELPED ME OUT IN A VERY SHORT TIME, DID A PERFECT JOB AND WAS SO VERY KIND AND THOUGHTFUL, THE OTHER STAFF I TALKED WITH WERE VERY KIND AND NICE.THANK YOU PANEL BUILT.GARY LEE
Julie Seamans
Dec 09, 2020 Report
Excellent company to deal with! They built my office exactly as requested and were so professional to work with. Highly recommend!
Elizabeth Satterfield
Nov 27, 2013 Report
"The decision to go with Panel Built resulted in a flexible (floor plan) office addition and reduced the loss of floor space to almost nothing; while allowing an expansion that we needed." - David Bakare CEO, Executive Coach Builders