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Stack Homes Model 640 Prefab Home.

Stack Homes / Stack Homes 640

Stack Homes Stack Homes 640 Prefab Home

The Stack Homes 640 is a 640 square foot modular one bedroom, one bath home designed for use as an ADU, guest house, smaller primary home, vacation home, or as a rental unit. The home features a separate bedroom with a built-in wall of closets and drawers. The bathroom features a walk-in shower, linen closet and laundry closet. The home’s kitchen offers an efficient galley-style design with a built-in breakfast bar. The home’s design offers natural lighting and views from the front floor to ceiling glass windows and glass entry door.

Stack Homes Stack Homes 640 Features

  • Modular, steel-frame, SIP panel construction
  • Versatile, stackable design
  • High quality Western Window Systems glass sliding doors
  • High efficiency dual-pane windows
  • Open-concept spaces, 9-foot ceilings
  • Homes include cabinets and solid surface quartz counters
  • Homes include energy efficient fridge/freezer, cooktop, electric oven, and dishwasher
  • Mini-split HVAC unit included

Stack Homes model 640 prefab home.
Stack Homes 640 front exterior view showing floor to ceiling front windows, glass entry door and optional level deck

Stack Homes model 640 prefab home - interior, kitchen.
Galley side-wall kitchen with plenty of storage

Stack Homes model 640 prefab home - interior living space.
Interior living area

Stack Homes model 640 prefab home - interior, bedroom with built-in cabinets.
Bedroom built-in storage

Stack Homes model 640 prefab home - interior, bathroom.
Bathroom with walk-in heavy glass shower

Stack Homes model 640 prefab home - floor plan.
Stack Homes 640 floor plan

Stack Homes 640 Room Summary (

First Floor

Public Living Space

Private Living Space

Master Bedroom (15 x 12)


Utility Space

Outdoor Space

Second Floor



Additional Rooms

Build Details

Roofing: EPDM membrane
Framing: SIPs & Steel
Shealthing: SIPs
Construction Notes:


Ceiling: (R | Type) R-21
Wall: (R | Type) R-21
Ceiling: (R | Type) R-40


Siding: Fiber Cement
Windows: Double-pane argon gas-filled windows throughout
Entry Doors:
Sliding / Terrace Doors:
Floors: Hardwood
Interior Finish Notes:

Stack Homes Stack Homes 640 Package Includes


Cooktop: Electric cooktop
Kitchen Hood:
Refrigerator: Refrigerator & freezer
Washer / Dryer:


Countertops: Quartz countertops
Kitchen Cabinets: Included
Kitchen Sink: Stainless steel sink w/ garbage disposal
Kitchen Faucet: Matte black fixtures and faucets


Bath Sink: Porcelain sink with Moen faucet
Bath Faucet: Matte black fixtures and faucets
Toilet: Toilet w/septic or utility hookup
Bath Tub:


Water Heater:
HVAC Heating:
HVAC Cooling:
Ventilation System:
Solar Panels:
Alt Energy System:
Green Home Features:

Green Home Features

Green Home Features:
Alt Energy System:
Solar Panels: