Multi-Generational Carriage House in West Seattle Showcased on the NW Green Home Tour!

The owner of this property loves the location and wanted to ensure she could continue to stay here as she ages. Meanwhile, an adult daughter became interested in moving back to the West Coast to be closer to family. As these two ideas percolated, they decided to build a Detached Accessory Dwelling Unit (DADU) with a 2-car garage and renovate the home — accommodating their desire for multi-generational living.

Starting with a carbon copy of a carriage house (aka DADU) on the north end of town. The classic architectural building of a living space atop a garage is a very space-efficient use of land. Our client liked that design and felt that it was an appropriate point of departure for her needs on her property.

SAGE DESIGNS NW and MIGHTY HOUSE CONSTRUCTION worked with the homeowner to fine-tune the design and final scope for her particular needs, including the need to separate private uses of the garage between her and her daughter and son-in-law. Those solutions also future-proof the property for condoization to have separate ownership if or when desired.

THIS PROJECT IS IN THE MIDST OF BEING BUILT. Site work, foundation, and some framing are complete. See the project in progress and learn about the solutions yet to come.


Waste Reductions
Doors from the prior garage were donated to a young couple for their new garage
All lighting received by a rental management company
Plants largely saved to be reused on-site or relocated to other properties (inc. a few very mature Rhododendrons)

Universal design, including an elevator
On-site water treatment from the roof
Adaptable living spaces
Loads of natural light
Super insulation in the walls, roof, and concrete slab
Pex tubing for the plumbing
Programmable thermostats
Built-in recycling bins

Energy Efficiency
Ducted mini-split heat pump heating/cooling
Electrical vehicle charging stations
Heat recovery ventilation
Energy Star appliances
Low-energy LED lighting
Water-wise fixtures

Solutions to come
Fiber cement siding
Low toxic paints
Durable flooring
Local + Sustainably manufactured cabinetry

2024 Northwest Green Home Tour is on Saturday, April 27, 2024 from 11:00am-5:00pm.  Get your free tickets now.

2024 Northwest Green Home Tour is on Saturday, April 27, 2024 from 11:00am-5:00pm.  Get your free tickets now.