2 Bed | 1 Bath | 576 sq.ft


CAL 4 is a two-bed, one-bath ADU with 24” x 24” dimensions, an ADU with an even square-shaped floor plan with a gross area of 576 sq. ft.   CAL 4 primary door opens to a cozy living room, perfect for an Entertainment console or TV space for a young family of four.  The dining area is situated next to the living room. It is designed with an island counter that fits a four-seater stool, space for a full-sized refrigerator, a dedicated wash/dryer, and extra space for storage in the utility area. The flooring is finished with white ceramic tiles and wood flooring. 

CAL 4 has two huge bedrooms with a common bath. The bedrooms have a built-in wall closet and can comfortably fits a King sized (72” x 84”) bed or bunk bed depending on need. All the rooms are installed with standard full-glass white vinyl windows, allowing natural lighting to flow inside. 

The roof of this ADU is butterfly-shaped, with two-tone vertical stucco sidings, turquoise green, and beach-sand white.  

Upgrade options are available depending on client preference.



Walls: 2” x 6” wood frame, standard 16” OC with fiberglass insulation (R19 exterior) (R11 interior)

Floor: 2” x 8” wood frame, standard 16” OC with ¾” OSB/plywood sub-floor sheathing with fiberglass insulation (R19)

Ceiling: 2” x 8” wood frame, standard 16” OC with fiberglass insulation (R30)

Roof: 2” x 6” wood frame truss with ½” OSB/plywood sheathing

Walls: 2” x 6” light guage steel (LGS) frame, standard 16” OC with choice of mineral wool or spray foam insulation (R19 exterior) (R11 interior)

Floor: 2” x 8” light gauge steel (LGS) frame, standard 16” OC, 3/4" OSB/plywood sub-floor sheathing with choice of mineral wool or spray foam insulation (R19)

Ceiling: 2” x 8” light gauge steel (LGS) frame, standard 16” OC, with choice of mineral wool or spray foam insulation (R19)

Roof: 2" x 6" light gauge steel (LGS) truss with 1/2" OSB/plywood sheathing


  • Split system HVAC
  • Split or central dual ducted HVAC system


  • LED lighting where indicated
  • Standard receptacles and switches
  • 120VAC throughout
  • LED lighting where indicated
  • Upgraded receptacles and switches as per client’s choice
  • 120VAC throughout


  • PEX throughout
  • Copper throughout




Wall / Ceiling

Interior: ½” gypsum drywall with level three textured plaster, rough coat finish, painted with choice of color.

Exterior: ½” OSB/plywood backing with fiber cement board, painted with choice of color or style

Interior:  5/8” gypsum drywall or board with choice of smooth plaster finish or other wall covering.

Exterior: ¾” plywood sheathing with smooth plaster finish or upgraded choice of siding


  • Vinyl / Laminate Plank Tile, choice of color/style
  • Hardwood, tile, or carpet with choice of colors and style


  • 30 Year Asphalt Shingle, choice of standard color
  • Choice of standing seam or tile with color option

Windows / Sliders

  • Dual-pane, white vinyl / fiber glass frame
  • Triple-pane aluminum frame with choice of color


Interior: Hollow-core wood, painted to match walls

Exterior: Solid-core, painted to match exterior/interior (if plans specify exterior door)

Interior: Solid-core wood, painted with choice of color

Exterior: Solid-core wood/steel, optional over-sized and choice of color


  • Factory-direct, color to match walls
  • Custom-designed to client specifications


  • “American Standard” or equivalent (subject to availability)
  • “Kohler” or other choice of upgraded fixtures per client’s choice


Not included in Standard Package

Client’s choice of appliance packages


Printable Floor Plan

2 Bed | 2 Bath | 576 sq.ft

A Sustainable,
Eco-Friendly Home

During the construction process, our prefab homes generate about 80% less waste then standard site built homes.  A controlled factory setting allows us to use construction materials in a more efficient manner.  In addition, waste and poor workmanship caused by weather is eliminated.  The National Association of Homebuilders (NAHB) states,  “There are tremendous benefits to building parts of the home in a controlled facility, materials are protected from the weather and used in a more efficient manner.”

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