Polymath Studio

We are a full-service Architecture and Design studio, based in Portland, Oregon, serving the Pacific Northwest and beyond. We specialize in:


Clean lines, an honest expression of material and structure, abundant light and air, and a strong connection to nature.


Add that second story or bump out the backturn your current house into the house of your dreams.


Live small, embrace multi-generational living, or earn rental income. Help find the Missing Middle.


Simple designs, elegant details, and high quality living spaces.


Certified Passive House Consultant. LEED Accredited Professional. Save the planet — and on your utility bills.


A selection of our recent projects

Marguerite ADU

A contemporary lofted ADU in Southeast Portland.

On The Boards: Underwood Addition

A dramatic addition to a 1951 ranch in the southwest […]

On the Boards: Court / House

A contemporary residence in Northeast Portland, featuring a central courtyard […]

Alder Lift

An 1888 Victorian is rescued from its crumbling brick foundation, raised, and anchored to a new lower level. The musty, little-used basement is replaced by an open living space that serves as the heart of the rejuvenated home.

Ladd’s Renovation

A tasteful modernization of a 1904 home in Portland's Ladd's Addition Historic District.

Hawthorne Addition

A contemporary, yet sympathetic, addition to a 1925 bungalow.

Caruthers ADU

A conversion of an historical garage into an ultra-compact studio apartment.

Basement of Dreams

An extensive basement renovation in SE Portland.

Killingsworth ADU

A 550sf dwelling with a lofted sleeping area and beautiful exposed-structure wood ceiling.

Under Construction: Westwind Apartments

A renovation of a 4-unit mid-century modern apartment building.

About us

We design things. Mostly buildings. We advocate for Idea and Craft in the man-made world.

Sean Barnett, AIA

Oliver Brandt

Brendan Albano, CPHC®


Contact us

Tell us how we can help you.

  • This field is for validation purposes and should be left unchanged.