The Napa ADU SWAP project creates an initial 1200 sf ADU on a property already containing a Primary Home. The ADU has built-in infrastructure to allow for a seamless transformation to the Primary Residence in conjunction with the reduction in floor area of the current Primary home.
The ADU SWAP is Designed for Equitable Communities & Economy. The concept of the SWAP project is that a compliant ADU will be built and completed onsite while an extended family continues to live in the Primary home. A second permit to reduce the size of the Primary home to 1200 sf and enlarge the ADU to 1826 sf will allow the family to maintain seamless affordable housing onsite throughout the build process.
The ADU SWAP is Designed for Change. The simple “U” shaped plan layout of the ADU, with large roof overhangs and structural columns has been designed to meet all lateral and gravity loads. The structural engineer has been tasked with creating a structural system that will not depend on future walls for seismic resistance. All waste plumbing and electrical conduit required for the future expansion will be in place.
The ADU SWAP is Designed for Energy & Resources. The ADU SWAP is an all-electric home with PV panels, mass slab floor, LED lighting, high efficiency heat pump mini-split systems and heat pump electric water heating. The materials used for the finishes; exposed concrete slab floor, cement plaster exterior, white PVC roof membrane and sheet metal fascia will stand the test of time.
The ADU SWAP is Designed for Well-Being. The ADU SWAP allows for an extended family to stay together, to evolve and grow. The ADU is simple in form and connected to natural light and exterior spaces through sliding door, expansive glazing, and clerestory windows.
This is a real project. Permits are pending, and construction is planned to begin Spring 2022.
[Architect] Mark English Architects
[Structural Engineer] Vertex
[Geotechnical Engineer] PJC & Associates