Turnkey Bunker Construction Services
Full-service general contractor handling every phase of your underground shelter project from concept to completion
Design & Engineering
Custom bunker design tailored to your property and requirements. All structural plans reviewed and stamped by licensed Missouri professional engineers.
What's Included:
- Site assessment and soil analysis
- Custom concept design based on your needs
- PE-stamped structural engineering drawings
- Waterproofing and drainage specifications
- Systems integration planning (power, water, air)
- Code compliance review and permit-ready documents
Benefits:
- Springfield-specific engineering for clay soils
- FEMA P-361 storm shelter compliance available
- Licensed engineer liability protection
- Building department coordination included
Excavation & Site Preparation
Professional excavation with proper spoil management, drainage installation, and foundation preparation. We handle all earthwork and site logistics.
What's Included:
- Controlled excavation to engineered specifications
- Spoil removal or on-site grading
- Foundation base preparation and compaction
- Perimeter drainage system installation
- Under-slab drainage grid
- Utility trenching and coordination
Benefits:
- Professional excavation equipment and operators
- Proper safety protocols and erosion control
- Coordinated utility locates
- Site restoration included in pricing
Structural Construction
Reinforced container bunkers or cast-in-place concrete structures. Steel I-beam framing, reinforced concrete, and professional welding.
What's Included:
- Container selection and modification (20' or 40' High Cube)
- Steel I-beam reinforcement framing (W10x22 longitudinal beams)
- Corner-first frame system with adapter plates
- 6" reinforced concrete slab with #4 rebar @ 12" o.c.
- Structural welding and inspection
- Optional roof diaphragm for vehicular loads
Benefits:
- Engineered to withstand 15+ PSI lateral earth pressure
- Tornado-resistant construction (250+ mph wind)
- Licensed welder certification
- Lifetime structural warranty available
Waterproofing & Drainage
Professional 7-layer waterproofing system and comprehensive drainage to keep your bunker completely dry in Springfield's challenging conditions.
What's Included:
- Surface preparation (blast and prime steel)
- Zinc-rich epoxy primer + high-build topcoat (12-16 mils)
- Spray-applied elastomeric membrane (80-100 mils)
- HDPE dimple drainage mat with filter fabric
- Rigid protection board on all exterior surfaces
- Perimeter French drains and sump system
Benefits:
- Designed for Springfield clay soils and water tables
- Dual pump system with battery backup
- Flexible membrane accommodates soil movement
- 20+ year waterproofing system lifespan
Systems Installation
Complete electrical, HVAC, plumbing, and survival systems. Air filtration, water purification, power systems, and all life support infrastructure.
What's Included:
- Electrical service with panel and wiring
- HVAC system with dehumidification
- Plumbing for water supply and drainage
- NBC-rated air filtration (optional)
- Water purification and storage
- Backup power systems (generator/solar/battery)
Benefits:
- Licensed electrician and plumber
- Code-compliant installations
- Survival-grade redundant systems available
- Comprehensive system testing and training
Final Commissioning
Complete systems testing, owner training, final inspections, and project documentation. We don't leave until everything works perfectly.
What's Included:
- Final building inspection and sign-off
- Systems testing and verification
- Owner training on all equipment
- Operations and maintenance manuals
- Emergency procedures documentation
- Warranty documents and long-term support plan
Benefits:
- Turnkey handoff—ready to use immediately
- Comprehensive owner education
- Ongoing support and maintenance available
- Peace of mind with professional warranty
Why Choose Bunker Up Buttercup
The difference between amateur bunker attempts and professional survival infrastructure
Licensed General Contractor
Full Missouri contractor license with comprehensive liability and workers comp insurance. Your project is protected.
Single Point of Contact
No subcontractor coordination needed. We handle everything from permits to final inspection.
Springfield Expertise
15+ years building underground structures in Missouri clay soils. We know what works here.
Professional Engineering
All structural plans PE-stamped by licensed Missouri engineers. Code-compliant and building department approved.
Comprehensive Warranty
Licensed contractor warranty on all work. Long-term support and maintenance available.
Turnkey Delivery
Complete project management from concept to commissioning. Walk away with a fully functional bunker.
Start Your Bunker Project
Free consultation and site assessment for Springfield-area properties. Licensed Missouri general contractor.
(417) 895-8733