ADU · 3-day build

The Sage

A second home on the land you already own.

ADU

A one-bedroom backyard home for family or rental income, sited and assembled in days, on the same Home OS as the main house from day one.

Bedrooms: 1 bd
Bathrooms: 1 ba
Floor area: 576 sq ft
Footprint: 24 × 24 ft
Stories: 1
Build time: 3 days

The home, from

$55,000

Typical all-in, with site work: $60,000 to $80,000; $104 to $139 per square foot.

The band adds a typical site allowance of 10% to 35% for foundation, site work, utility connections and permits, which depend on your lot. It is an estimate, not a quote. The firm number comes after a free site review.

Priced June 2026 · What this covers

Design this home in Studio →Find a lot for it

Where the money goes

The Sage, $59,030, line by line.

This is the home itself, before site work. Every figure comes from the same estimating engine that produces the bill of materials we build from, priced June 2026.

Wall panels and exterior shell$5,2439%
Factory-built exterior panels with windows and doors already installed, plus mobilisation.
Roof structure and deck$2,3444%
Trusses at 24 inch centres plus the sheathed deck.
Floor system and drywall$5,2119%
The raised floor cassette and the hung, finished interior surfaces.
Interior walls and doors$1,0252%
Partitions that divide the plan, and the doors in them.
Finish and roof-set work$7781%
Setting the roof and the finish labour that scales with floor area.
Systems, kitchen and bath$44,42975%
HVAC, electrical, plumbing, kitchen cabinets and counters, appliances and bath fixtures.

Included

The home itself: factory-built wall panels with windows and doors installed, floor system, roof structure and deck, interior partitions and doors, drywall and finishes, HVAC, electrical, plumbing, kitchen cabinets, counters and appliances, and bath fixtures.

Not included

Land. Site work, foundation class, utility connections to the lot, permits and impact fees, and any unusual site conditions. Those are covered by the site allowance band and confirmed at the free site review.

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