Link to the home page mobile-menu

Order a fixed-cost building in four steps

Then, your prefabricated building will ship as Quantum Universal Building Blocks to be installed on-site. The entire process takes just a few weeks, from selecting your building design to your move-in day.


Select your building

Choose from vertical or horizontal builds; pick the building type and the mix of unit floorplans to fit the needs of your building and its occupants.

View Buildings


Select your exterior

As durable as they are beautiful, our exteriors are virtually zero-maintenance. Pick an exterior to fit any neighborhood and environment.

View Exteriors


Select your roof

Standard roof, green roof, rooftop deck, solar panels, and more — it’s up to you how you want to personalize your building.

View Roofs


Select your interior package

Every Quantum Assembly building comes standard with top-of-the-line, high-efficiency, luxury interior finishings.

View Interiors


Our pre-permitted and predesigned multi-family housing buildings and planned communities and villages are carefully designed to be low-risk, low-cost, and low-maintenance. Our premade buildings are attainable, sustainable, and beautiful, so everyone can own a home they truly love.

Vertical Development

Multi-Family Housing

Quantum’s Universal Building Blocks are stackable to create apartment and condo buildings up to five stories tall. Our customizable rooftop options can provide shared outdoor environments to foster a sense of community, even when space in the neighborhood is limited.

Horizontal Development

Planned Communities

Our planned communities are sets of standalone homes for individuals and families — these can easily range from studios to two-bedroom, two-bath homes based on the community’s needs, whether they’re students, seniors, veterans, or a local workforce. We can ship and install a village in weeks.


Our predesigned floorplans range from 400-square-foot studios to 800-square-foot two-bedroom, two-bath units. These can be installed as standalone homes or assembled into a multi-unit structure using any combination of floorplans.

Studio Unit

Studio Deluxe

1 Bd/1 Ba Unit

1 Bd/1 Ba Deluxe

2 Bd/ 1 Ba Unit

2 Bd/ 2 Ba Deluxe


As durable as they are beautiful, our exteriors are engineered to be virtually zero-maintenance (bye-bye, paint), ultra-energy efficient, and impervious to weather, pests, rot, and fire.


  • Structure
    Steel Hollow Structural Sections (HSS) with welded connections.
  • Wall, floor, and ceiling
    Galvanized light gauge steel. 
  • Standing seam metal roofs
    Galvanized light gauge steel.
  • Green roofs and rooftop decks
    HHS and plate steel.


  • Stair superstructure
    Steel HSS and steel C-channel with bolted connections. 
  • Treads and landings
    Precast concrete.
  • Railings
    Steel plate and tube.
  • Balusters, guard, and grab rails
    Welded connections.
  • Installation
    Bolted connections.

Subfloor (USG)

  • Cement-based panel.
  • One-hour fire-rated.
Quantum Universal Building Block

Building envelope

  • Structural insulated sheathing
    R-11 insulation value.
  • Weather-resistant barrier (WRB)
    Self-adhered with UV protection.
  • Rainscreen system
    Open-joint, aluminum.
  • Cladding
    Fiber resin panel (FRP).


  • Walls (R-26)
    Wrapped in a structural insulated sheathing and filled with non-combustible mineral fiber.
  • Floors (R-30)
    Non-combustible mineral fiber insulation.
  • Ceiling joists (R-30)
    Non-combustible mineral fiber insulation.
  • Standing seam roofs (R-60)
    Non-combustible mineral fiber insulation.
  • Green roofs and rooftop decks (R-60)
    Closed-cell foam insulation.
QA interior unfinished unit 5


  • Standard roof
    Standing seam metal with Kynar 500® coating or equivalent.
  • Green roofs and rooftop decks
    Coated with a urethane, epoxy, or powder-coated finish.

Doors (Jeld-Wen)

  • Exterior entry doors
    Flush steel, 30-minute fire rating.
  • Exterior sliding doors
    Vinyl sliders, low-E, argon-filled, clear glass. Average U-factor: 0.29.

Windows (Jeld-Wen)

  • Energy efficient
    Vinyl sliders, low-E, argon-filled, clear glass.
    Average U-factor: 0.28.
QA exterior rooftop aerial 3


We’re redefining builder-grade prefab construction. Every Quantum Assembly building comes standard with top-of-the-line luxury interior finishings. Best of all, your Quantum unit arrives 95% finished. The miniblinds, cabinets, and fixtures are already installed and ready to enjoy.

Years from now, when you’re ready to update appliances, plumbing, and wiring, we’ve made it easy for you. Because there’s no drywall, wood, or paint, you can unscrew the necessary wall panel, make changes, and replace the panel.


Studio Interior

QA interior finishedunit kitchen livingroom

Interior Kitchen and Living Room

QA interior finishedunit livingarea

Interior Dining and Living Room

interior bathroom

Interior Bathroom

QA interior bathroom washer dryer

Interior Washer and Dryer

Interior walls and ceilings

Patent-pending prefinished, no-paint, no-drywall, non-combustible wall panels.

Interior doors

Prefinished barn doors with exposed track system.


Three-centimeter slab granite or quartz slab countertops with a standard square edge.


Prefinished Euro-style cabinets with soft close hinges.

Lanz Cabinets


Luxury vinyl plank.

Shaw Floors

Bathroom fixtures

Chrome bath accessories.



High-efficiency washers, dryers, dishwashers, microwaves, refrigerators, ovens, ranges, and more.

GE Appliances

Shower doors

Tempered glass bypass door.

Link to the home page mobile-menu