Cho & Urano is an architecture firm in Salt Lake City, Utah providing a full scope of services on projects of various types and sizes, and engaging in architectural research through experiments and theoretical projects.

We started in 2020 after winning an international competition with our project House for Our Mothers. Prior to that we worked in offices in Los Angeles, Beijing, Seoul, San Francisco, and New York.

We approach each project as a continuing investigation into relationships between architecture, structure, and landscape, using sketches, models, and collected images.

Our research has touched on a variety of subjects, including houses, housing, urban design, and infrastructure. It has been exhibited in Seoul, Los Angeles, and New York, as well as at the International Architecture Biennale in Rotterdam, and has been published internationally in A+U, Shinkenchiku, and others.



Hansong Cho received a Bachelor of Architecture from the University of Seoul and a Master of Architecture from Columbia University’s Graduate School of Architecture, Planning, and Preservation. She has managed numerous residential and cultural projects in New York for the offices of Kyle May, Toshihiro Oki, and Julian von der Schulenburg. Her personal work has been exhibited at the International Architecture Biennale in Rotterdam, the Hunter East Harlem Gallery in New York, and was featured in a retrospective exhibition of Columbia University’s best housing projects produced over a 40-year period. She has served on design juries at RISD, UCLA, USC, and Texas Tech, and is an associate instructor at the University of Utah School of Architecture. Hansong is a licensed architect in the State of Utah.


Sasha Urano grew up in Honolulu and Salt Lake City. He holds a BA in Architectural Studies from UCLA, where he graduated with distinction, and a Master of Architecture from Princeton University. He has worked in a number of offices in the U.S. and Asia including Jones Partners Architecture, MAD, Mass Studies, and IDEO. Prior to co-founding Cho & Urano he spent four years as a project architect at Levenbetts in New York where he managed, among other things, a winning competition proposal for a public sculpture in Lower Manhattan and the renovation of a public library in Brooklyn. He has served on design juries at UCLA, USC, and Texas Tech, and is an associate instructor at the University of Utah School of Architecture.


  • Center for Bees featured in the Salt Lake Tribune, May 2023
  • Cho & Urano Receive Honorable Mention in Namdo Righteous Army History Museum Competition, 2022
  • House with a Corner Eave Wins Runner-Up Prize in Empowered Living Design Competition, 2021
  • Three Wall House and House with a Corner Eave Exhibited at AIA Utah Empowered Living Design Awards Ceremony, 2021
  • Salt Lake City Office Opened, June 2021
  • House for Our Mothers Published in A+U No. 592
  • House for Our Mothers Published in Shinkenchiku 2020:01
  • House for Our Mothers Awarded First Prize in Shinkenchiku Residential Design Competition, 2020


Principal use: Residence
Project Site: Salt Lake City, Utah
Total Floor Area: 600 sq ft.
Design period: 2021.09-10
Host: Salt Lake City, the American Institute of Architects Utah Chapter, and the Community Development Corporation of Utah
There are many reasons to love cast-in-place concrete—its plasticity, its durability, the freedom it allows in creating textures and patterns, the way it weathers over time…—but the construction process is always tinged with an annoying paradox, which is that an entire copy of the building must be erected only to be disassembled and thrown away.

The intent of this house is to offset some of this wastefulness by integrating slightly modified building conventions into the earliest stages of design, and in doing so find a novel architectural solution to the client’s program: a 600-square-foot accessory dwelling unit.

The formwork for this house, far from being a sacrificial byproduct, plays an integral role not just in the construction process but in defining the very spaces and proportions of the house itself. It comprises four wood-framed modules that, laid sideways and packed together, serve as the formwork for three concrete exterior walls.

Once the concrete has cured, the modules are removed through the open fourth side and recombined to become the roof structure. Protrusions that previously formed the door and window openings become openings in the roof: a skylight for the sleeping loft and a mechanical chimney above the kitchen and bathroom.

It is a truism in every design discipline that constraints are essential to the design process. This project is a reminder that while architectural expression often benefits from an abundance of resources, it can just as well find motivation through an economy of means, i.e. doing more with less.
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