About Us
Hardened Structures
A World Leader in Underground
Shelter Systems

Hardened Structures is a leading American professional engineering and construction program management firm specializing in:

Our Multi-Hazard Design/Build engineering methodology encompasses all aspects of Blast Hardening, Blast Effect Mitigation, protective design technologies, advanced security, and alternative energy systems.

Fortfied Homes
Fortified Homes
Professional Architects & Engineers
Fortified "Hardened" Homes with Bunkers
"Genesis" Underground Shelter Systems
2012 Structures

Underground Shelter Systems, Bunkers, and Fortified Homes/Structures require highly specific "life safety" and "threat mitigation" features in order to perform their primary mission: protecting your family. This is NOT a job for your common contractor, architect or engineering company.

Hardened Structures unique knowledge and expertise in shelter dynamics, structural engineering, threat mitigation measures, advanced HVAC systems, CBRN (Chemical, Biological, Radiological and Nuclear) systems, structural steel/concrete and earth works operations will ensure that your specific project will be a success.

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Fortified Home
Commercial
Commercial
Specializing in:
CBRN Threat Detection & Mitigation
Blast & Structural Engineering Services
Hardening of Buildings & Structures

Hardened Structures provides state of the art detection and mitigation of CBRN threats and protection for new or existing commercial or government buildings and transportation systems.

Our structural engineering team provides design services and construction management for steel blast connections or blast curtain wall installations to protect commercial buildings.

Our specific engineering expertise offers "hardening" of any new or existing building or structure to mitigate any known threat.

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Commercial
Military
Military
Hardened Aircraft Hangers
Hardened Ammunition Storage Facilities
"Hardened" Military Structures

Hardened Military Structures are designed to meet or exceed current Mil Spec and NATO Third generation standards. Third generation NATO hardened Aircraft Shelters are designed to meet NATO AASTP-1 and Mil Spec 188-125-1.

Hardened military structures are designed to withstand a wide range of threats including forced entry, CBRN (Chemical, Biological, Radiological and Nuclear) attacks, ground shock, penetration, fragmentation, and damage to the structure and equipment due to explosive loading.

Our balanced survivability approach ensures that no significant facility failure mode has been overlooked. Our military structures include hardened aircraft hangers, ammunition storage facilities, and "Wonder Buildings" - a strong, space efficient earth-coverage system.

Special Projects
Special Projects
Silo/Bunker Conversion
Security/Threat Assessment
Island Fortresses
A World Leader in Bomb Shelter Design and Construction

Survival Fortress/Community Under Construction

New Blast Doors Into Secure Underground Facility

About Hardened Structures Hardened Shelters, LLC

Hardened Structures is a Professional Construction Program Management Company specializing in the confidential planning, design and covert construction of fortified homes, bomb shelters, underground shelters and homes with underground bunkers, survival shelters, 2012 Shelters, bunkers and hardened military facilities. These facilities are designed for sustainability with independent sources of power and water and incorporate numerous defensive and offensive capabilities. They can serve as a primary dwelling, vacation home, corporate retreat, long term shelter or expanded multi-function compound. Client confidentiality and total project secrecy are paramount on all of our projects.

Hardened Structures can provide all designs, planning, estimating, engineering, modeling, construction and technical support to offer complete turn-key survival facility solutions for private/residential, commercial, military and special projects. Hardened Structures can also provide all of the specialized equipment necessary for underground bunker construction, CBRN air filtering systems, blast doors, blast valves, water generators, etc.

As a Worldwide provider of bomb shelter design and underground bunker construction, Hardened Structures understands that each risk situation is unique and requires a comprehensive threat assessment and asset assessment tailored to the client’s particular defensive and sustainability requirements.



We design your facility to achieve a condition of Balanced Survivability where all systems are hardened to mitigate the same threat levels thus assuring there is no "Achilles Heel" in the facility. Regardless if it is Chemical, Biological, Radiological, Explosive (CBRE) weapons, armed assaults, 2012 scenarios, WMD's or any civilization altering scenario, our experienced and highly specialized team of engineers, scientists and ex-military special forces can confidentially design and covertly construct your facility efficiently and cost effectively anywhere in the world.

In the world of Hardened Structures construction, the importance of client confidentiality and project secrecy/security cannot be overstated. We serve as our Client's Agent and Representative solely protecting their best interests by implementing and enforcing client/project specific security and confidentiality parameters throughout the design, planning, and construction process.

Please contact us anytime to discuss your survival facility needs, ideas, or just get a better understanding of what we can do for you.

Call toll-free 1-877-486-0084
Email info@hardenedstructures.com
Or fill out our confidential information request form here.