ADU 400 - ADU (1 Bed)
$124,900
Fully Finished Price400 Square Feet - MUBEC Compliant Tiny Home
Fully Assessed & MUBEC Compliant: Engineered specifically to meet all strict residential requirements of the Maine Uniform Building and Energy Code.
Fully Customizable: Kitchen layouts, bathroom fixtures, and interior finishes can be fully customized to your exact luxury standards.
A spacious, fully separated 1-bedroom dwelling. The ADU 400 provides genuine multi-generational living capabilities with distinct sleeping and living quarters.
Installed Project Estimate
Estimated Total Cost$135k - $160k
* Total Estimated Cost includes the unit itself, municipal permitting, foundation preparation, and core utility trenching. Final cost varies based on property conditions.
Standard Features
- Passive House–inspired high-performance insulated building envelope
- Full bathroom with plumbing, fixtures, and finished surfaces included
- 18,000 BTU Mitsubishi Hyper-Heat heating and cooling system
- Heat Recovery Ventilator for continuous fresh-air exchange
- Fully finished interior and exterior with electrical work included
- Triple-pane European-style windows and exterior doors
- Standing seam metal roof
Ideal For
Long-Term Rental IncomeMulti-Generational HousingAging In Place
Thinking about the ADU 400?
Talk it through with me in a free 15-minute call: zoning, septic and utilities, rental potential, and a realistic all-in budget. I'll call you at the time you pick.
Maine-based builder · I take every call myself