About Us
Hardened Structures
A World Leader in the delivery of
Underground Shelter Systems

Hardened Structures Hardened Shelters LLC is a Construction Program Management firm.

Our Team consists of a core group of specially trained shelter engineers for shelter planning, shelter programming, shelter dynamics, architectural, structural engineering, blast engineering, EMP/HEMP shielding, CBRN, HVAC, electrical, security and alternative energy designs.

Our construction services can be tailored to the client specific needs to include full design build services or working with your general contractor.

The Hardened Structures Team has successfully delivered shelter projects world-wide since 1991.

Fortfied Homes
Fortified Homes
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.

The unique knowledge and expertise of the Hardened Structures Team through our specially designed engineers and general contractors 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
Specializing in:
CBRN Threat Detection & Mitigation
Blast & Structural Engineering Services
Hardening of Buildings & Structures

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

Formed of specially designed engineers and general contractors, our structural engineering team provides design services and construction management for steel blast connections or blast curtain wall installations to protect commercial buildings.

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

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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.

The Hardened Structures 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

The Hardened Structures Team of specially designed engineers and general contractors has the specialized engineering know-how to undertake the world's most challenging Special Projects.

Our special projects portfolio includes:

A World Leader in the delivery of 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 Construction Program Management firm specializing in the confidential planning, design and covert construction of fortified homes, bomb shelters, underground shelters and homes with underground bunkers, survival 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.

The Hardened Structures Team of specially trained shelter engineers 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, such as HEMP/EMP shielding, CBRN air filtration systems, blast doors, blast valves, water generators, and much more. For military projects, secured servers are available.

As Worldwide providers of bomb shelter design and underground bunker construction expertise, the Hardened Structures Team 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.

Bomb shelter designs should only be performed by experts in the field. Our design methodologies ensure that your facilities achieve a condition of Balanced Survivability where the shelter envelope, the shelter systems and subsystems all survive the same threat and the threat levels simultaneously ensuring there is no “Achilies Heel” in the design.

Our management methodologies ensure that your facilities 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, HEMP/EMP, armed assaults, end-of-the-world scenarios, WMD's or other civilization altering scenario, our highly specialized teams 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 and security cannot be overstated. We serve as our Client's Agent and Representative solely protecting their best interests by implementing and enforcing client and project specific security and confidentiality parameters throughout the design, planning, and construction process.We can tailor our services to work with your architect and/or general contractor to best fit your project requirements and budget.

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

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