Construction Services: Underground Shelters

Underground Shelter & Bunker Construction in New Hampshire

For clients seeking the ultimate in safety, security, and preparedness, T's Excavation offers specialized design and construction services for underground shelters and bunkers. This is not a task for a common contractor. In partnership with the engineering and structural resources of Walls Companies, we leverage our deep expertise in complex excavation and secure construction to create discreet, durable underground structures tailored to your specific security and self-sufficiency needs.

Our process is handled with the utmost professionalism and confidentiality, from initial site assessment to final systems integration. We understand the unique geological and hydrological conditions of New Hampshire and engineer our structures to withstand them.

Customizable Secure Spaces: Features & Options


We design and build a range of underground structures, from simple storm shelters to more complex, sustainable bunkers.

  • Site Assessment & Discreet Excavation
    We begin with a confidential evaluation of your property to determine the optimal location, considering topography, water tables, and access. Our excavation is precise, deep, and planned for discretion.

  • Structural Engineering & Fortification
    Our shelters are engineered using high-strength, reinforced concrete and other durable materials designed to handle significant soil and hydrostatic pressure.

  • Secure Access & Egress
    We design and construct secure and discreet entry and exit points, which can be integrated into new or existing structures or hidden within the landscape.

  • Life-Support Systems Integration
    We incorporate systems for ventilation and CBRN (Chemical, Biological, Radiological, Nuclear) air filtration, independent power generation (e.g., solar with battery backup), potable water storage or generation, and sanitation.


  • Comprehensive Waterproofing
    We utilize multi-layered waterproofing systems to ensure a completely dry and protected underground environment, a critical consideration in the New England climate.

Applications & Considerations


An underground structure provides peace of mind and serves multiple practical purposes.

  • Storm & Emergency Shelter
    Provides secure protection from severe weather events, extended power outages, or other civil emergencies.

  • Security Bunker
    Offers an enhanced level of security for personal safety or the protection of valuables.

  • Specialized Storage
    Can be designed as a secure, climate-stable environment for use as a wine cellar, root cellar, or archival storage.

  • Compliance & Permitting
    We have the expertise to navigate the complex local and state permitting requirements for specialized underground structures.

Expertise Below the Surface


An underground structure provides peace of mind and serves multiple practical purposes.

  • Excavation Proficiency
    Deep and complex excavation requires specialized skills, shoring techniques, and heavy equipment that we possess.

  • Structural Partnership
    Our partnership with Walls Companies provides the necessary structural engineering and robust construction practices for a secure build.

  • Discretion & Confidentiality
    We understand the sensitive nature of these projects and handle all consultations and work with complete confidentiality.

  • Local Geological Knowledge
    Our experience in the White Mountains gives us a critical understanding of the region's bedrock, soil types, and water table challenges.

Discuss Your Secure Shelter Needs in Confidence


If you are interested in learning more about an underground shelter or bunker for your New Hampshire property, contact T's Excavation for a confidential consultation.


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