Qastic Stacks Two Arched ADUs Into 1,500-Square-Foot Los Angeles Building
Qastic, a design-build firm, has finalized Casa Plus in Los Angeles, where two accessory dwelling units (ADUs) are ingeniously stacked within a double-level arched metal framework on a 1,500 square-foot lot. The architecture showcases a seamless vaulted design that optimizes water drainage and spatial use. Two arched metal structures are positioned perpendicularly, supported by a robust steel framework and enveloped in white-painted galvanized Purlin Bearing Rib panels, resulting in a reflective cool roof. Each unit features its own entrance and includes a cooking, dining, and lounging space, a bedroom, and a bathroom. The units can function separately or be combined into a single-family home, enhancing flexibility in an urban setting. Photography by Mohamad Momenabadi, Sayeh Moomsaz, and Mahdi A Bakhshian.
Key facts
- Qastic completed Casa Plus, a Los Angeles building containing two stacked accessory dwelling units
- The two ADUs occupy a compact footprint of 1,500 square feet (140 square metres) on a rectangular site with a main house
- Two arched metal volumes resembling Quonset huts are stacked perpendicular to one another
- The building has a steel frame clad in white-painted galvanised Purlin Bearing Rib (PBR) panels forming a reflective cool roof
- Each level contains an ADU with its own entry, reached via a central enclosed stair for the upper unit
- Units include an open cooking, dining and lounging room, a bedroom and a bathroom, with timber flooring and drywall finishes
- The two units can function independently or as a single-family dwelling, adapting to changing household structures
- Photography is by Mohamad Momenabadi, Sayeh Moomsaz and Mahdi A Bakhshian
Entities
Artists
- Mahdi A Bakhshian
- Milad Hasanabadi
- Hooman Faali
- Elahe Andami
- Farzad Farahani
- Taraneh Iranpour
- Arshin Akrami
- Sedigheh Jafarinik
- Mohamad Momenabadi
- Mohamad Momen Abadi
- Sayeh Moomsaz
- Sara Mazraeh
- Romina Nikfarjam
Institutions
- Qastic
- Nast Enterprise
- PE Engineering
- Byben
- Assembledge+
- Dezeen
Locations
- Los Angeles
- United States
- Southern California
- California
Sources
- Dezeen —