The Vernon ADU is a new 768 Sq. Ft. accessory building located behind a 1947 home in NE Portland.  The lower floor is a 364 Sq. Ft. garage and the second a 364 Sq. Ft. one bedroom accessory dwelling unit (ADU).  The ADU is accessed by an external stair on the east side to a deck leading to the main entry.  The ADU is a compact efficient space with combined Living / Dining / Kitchen space, full bathroom, and one bedroom.  The bedroom is separated from the main living area by a large pocket door which can be opened fully to give a sense of openess to the entire space.

The structure has been designed for high insulation values with a raised heal roof truss system to eliminate a common weak point in the thermal barrier.  The ADU will be serviced by an efficient ductless mini-split heating system and water heater.

An Accessory Dwelling Unit is a smaller, secondary dwelling unit on the same lot or within a house, attached house, or manufactured home.  An ADU may be no more than 75% of the living area of the house up to 800 sq. ft.  The maximum height for a detached ADU is 18 feet (on sloped roofs, maximum height is calculated to the midpoint of the slope).  Exterior finish materials, roof pitch, trim, eaves, window orientation and dimension must be the same or visually match those of the house.

Project Team:
Structural Engineer – Willamette Building Solutions (Darla Wall)