Attainable & Sustainable workforce housing

Extreme Multi Family Building Plans

These cutting-edge plans incorporate advanced construction techniques and materials, ensuring both durability and energy efficiency. By addressing the critical need for affordable housing for the workforce, Extreme Panel Technologies is committed to creating a positive impact on communities while maintaining a strong focus on environmental sustainability. With a dedication to quality and forward-thinking design, their multi-family building plans offer a practical and sustainable approach to housing challenges, making a significant contribution to accessible and eco-conscious living spaces for all.

Plan Details

27,000 square feet

54 Units



Extreme Multi Family Features

  • Affordable net-zero or net-positive design
  • SIPs shell: 6.5” walls & 12.25” roof
  • Extreme R-Values: Walls R-24 | Roof R-50
  • SIPs roof creates vaulted ceilings
  • Vinyltek triple-pane windows (U-14 to U-16)
  • Post & beam construction allows easy future remodels
  • 4” Slab-on-grade floor for thermal mass
  • 4” R-20 under-slab insulation
  • NuDura insulated concrete forms (ICF) foundation
  • Optimized south-facing glazing & optimized daylighting
  • Built Green certified
  • Heat pump heating & heat pump hot water
  • Heat recovery ventilator recovers a minimum of 80% of energy from outgoing air
  • Designed to include rooftop solar panels, EV chargers, ATX low voltage lighting, and other sustainable features (sold separately) 


  • Exterior Wall Package
  • Exterior Roof Package
  • Roof Support Beam Package
  • Floor System Package
  • Weatherization Package

Not Included:

  • Final Roofing Material, residential doors, Windows
  • Interior Walls & Exterior/Interior Finishes
  • HVAC, Plumbing, & Electrical
  • Site Prep, Foundation systems, Utility Hookups
  • Installation

Extreme Advantages for Multifamily Build

Dual sound and fire performance make Extreme Panels an ideal choice for townhomes, condos, apartments, and hotels when fire safety and sound transmission are important. 

SIPs SouthEast Alliance Multi Family

The Extreme Panel Solution

High stc ratings

Testing by an independent laboratory confirms that Extreme Panels reduce sound transmission, for a quieter indoor environment. Wall assemblies using the panels achieve sound transmission class ratings (STC) of up to 58-59 well above the STC 50 requirement for walls separating dwell units. Notably, these assemblies are also ASTM E119 hourly fire-related assemblies.  Extreme Panels provide builders and designers with energy efficiency, high STC ratings and hourly fire-rated assemblies in a framing system that the contractor and install very quickly. With today’s construction labor shortages, Extreme Panels offers an exceptional system with fewer labor requirements than traditional framing products.

Project Gallery

Extreme Advantage


A structure consisting of sustainable raw materials assembled with responsible methods

Save Resources

Responsible production planning resulting in maximum use of the manufactured panels

Save Energy

15 times more air tight than conventional building construction

Zero VOCs

Zero panel off-gassing and 'Red- list' chemical-free envelope

Zero Waste

Our uniquely engineered manufacturing facility produces zero waste — all by-product is reused or recycled locally

Save Time

Reduced onsite construction time requirements -- on average framing time reduced by 66%

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