ADU-1S is a detached ADU with 525 sq. ft. living space on a 15ft x 35ft footprint. Its narrow width allows this unit to fit in tight spaces on smaller building lots. The smaller size is not compromised as it has a large bedroom and full bathroom. The vaulted ceiling above the open living, dining and kitchen area make this unit feel much larger than its actual size.

Based on a $150/sq. ft. build price, the cost of the ADU-1S building is estimated to be $78,750. Site preparation and utilities connections are a separate cost.

Clearing the site, excavation for footings and foundation, landscaping, along with utility connections of power, sewer, water and electricity to the existing home are estimated after an onsite inspection and review of the property is made. As a guide, installation costs run approximately $15,000 – $20,000.