Hawthorne Hills Three - AADU

ATTACHED ACCESSORY DWELLING UNIT — SEATTLE HOMES — GREEN BUILDING — MISSING MIDDLE

SEATTLE, WASHINGTON

This project renovates an existing home and adds an attached accessory dwelling unit (AADU), and a detached accessory dwelling unit (DADU) to thoughtfully develop this single-family home into three rental units in the desirable Hawthorne Hills neighborhood of Seattle. It brings forward a model of urban density, providing much needed ‘missing middle’ housing. The exterior of the two buildings is unified in onyx-grey fiber cement siding with cedar accent areas.

The 410 square foot AADU takes advantage of the original house’s slightly set back position on the lot to build a new unit to the front and side setback.  The entry opens to the bright kitchen and living space. Within the compact footprint, a hallway through the utility room leads to the bathroom and a separate bedroom.

Square feet: 410

Green Design: 4-Star Built Green certification
Built on a previously developed lot (infill lot), retained healthy trees on site, amended soil to restore soil environmental functions, ductless mini-splits, whole-house heat recovery ventilator, low- or non-VOC and non-toxic interior paint, locally-sourced materials