Existing Structure: Retrofit bunker solutions
are designed for homes and buildings that already
include a basement or underground space. Reinforced,
discreet, and engineered to integrate within the
existing structure, these systems provide essential
protection including gas-tight entry systems, NBC
filtration & ventilation.
If your property already includes an underground space, it may be possible to convert it into a basement bunker or reinforced safe room.
Typical structures that can be adapted include:
• Residential basements
• Underground garages
• Structural storage rooms
• Reinforced utility areas
• Sub-level concrete spaces
Each project begins with a structural assessment, followed by engineering design to determine the appropriate reinforcement and protection level.
Existing structures can be strengthened using advanced reinforcement systems designed to improve resistance to blast pressure and shockwave loads.
These systems are installed directly onto existing structural walls, creating a reinforced internal envelope that helps prevent collapse during extreme pressure events.
Applications include:
• Reinforced concrete basements
• Structural masonry walls
• Underground parking levels
• Sub-structure utility spaces
Key characteristics include:
• Improved blast pressure resistance
• Reinforcement for concrete and masonry walls
• Structural stability during explosive shockwaves
• Installation inside existing buildings
• Compatibility with bunker and safe room designs
A bunker is only effective when entry protection and air management systems operate together.
CBSS retrofit bunker systems may include:
• Blast and gas-tight bunker doors
• NBC air filtration systems (HEPA + activated carbon)
• Controlled ventilation with overpressure protection
• Manual backup ventilation systems
• Air quality and pressure monitoring
These systems maintain controlled breathable air and internal pressure stability during emergency scenarios.
For many properties, converting a basement into a bunker offers several advantages:
• Faster construction timelines
• Reduced excavation requirements
• Integration with the existing building structure
• Lower disruption to the property
Many homes in Cyprus already provide a structural foundation suitable for bunker reinforcement when engineered correctly.
Optional Upgrades for Existing Structure
When reinforcing an existing basement space, additional
systems can be integrated to increase protection,
comfort, and operational resilience.
We provide innovative solutions for your civil engineering needs.

MINIMAL FOOTPRINT. MAXIMUM SAFETY.
Compact, concealed, and purpose-built for 1–2 occupants, the Light Series is your last line of defense when time is short and risk is high. Ideal as a safe room or private fallout shelter, it fits almost anywhere while maintaining full compliance with CBSS standards.

FAMILY SHELTER. REINVENTED.
Engineered for families and compact groups, the Shield Series offers scalable layouts—from straight corridors to corner formations—each one fortified and optimized for survival efficiency. All Shield units come with NBC zones, overpressure safety, and CBSS-level automation.

ADVANCED LAYOUTS FOR LONG TERM LIVING.
The Fort Series expands into multi-room living with corridors, L-shaped designs, and full utility zones. Designed for sustained occupancy, this category includes built-in command areas, decon modules, and advanced filtration—all wrapped in CBSS’s resilient core architecture.

STRENGTH. COMMUNITY.
When protection goes beyond the personal, the Core Series delivers. Designed for group resilience, community living, or organizational sheltering, each layout is modular, redundant, and expandable—offering seamless multi-family cohabitation or NGO-level crisis response.
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