Primary Projects
Pursuing the most sustainable, affordable, & communal design. #primary_projects
The “Communal Housing Design Guidelines” are out now! Purchase your copy from the link in our profile.
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#primary_projects #bookDrop
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#communalHousing #housingDesign #multifamilyHousing #designGuidelines #designBook

Last but not least: “Split Switchback Stair Housing” on a 50’ x 100’ site, aligning with the neighboring buildings at the street side, and forming a party wall with one neighbor to create a fire lane on site. From our Portland entry for the 2025 National Single Stair Design Competition.
1-2. Ground Floor Plan
3. Third Floor Plan
4. Sixth Floor Plan
Single Stair Housing Studies, Portland, OR.
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#primary_projects & @rukamathu with the @croft_co2 system
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#singleStairHousing #infillHousing #pointAccessBlocks

Last but not least: “Split Switchback Stair Housing” on a 50’ x 100’ site, aligning with the neighboring buildings at the street side, and forming a party wall with one neighbor to create a fire lane on site. From our Portland entry for the 2025 National Single Stair Design Competition.
1-2. Ground Floor Plan
3. Third Floor Plan
4. Sixth Floor Plan
Single Stair Housing Studies, Portland, OR.
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#primary_projects & @rukamathu with the @croft_co2 system
.
#singleStairHousing #infillHousing #pointAccessBlocks

Last but not least: “Split Switchback Stair Housing” on a 50’ x 100’ site, aligning with the neighboring buildings at the street side, and forming a party wall with one neighbor to create a fire lane on site. From our Portland entry for the 2025 National Single Stair Design Competition.
1-2. Ground Floor Plan
3. Third Floor Plan
4. Sixth Floor Plan
Single Stair Housing Studies, Portland, OR.
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.
.
#primary_projects & @rukamathu with the @croft_co2 system
.
#singleStairHousing #infillHousing #pointAccessBlocks

Last but not least: “Split Switchback Stair Housing” on a 50’ x 100’ site, aligning with the neighboring buildings at the street side, and forming a party wall with one neighbor to create a fire lane on site. From our Portland entry for the 2025 National Single Stair Design Competition.
1-2. Ground Floor Plan
3. Third Floor Plan
4. Sixth Floor Plan
Single Stair Housing Studies, Portland, OR.
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.
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#primary_projects & @rukamathu with the @croft_co2 system
.
#singleStairHousing #infillHousing #pointAccessBlocks

Catch up with friends at the foot of the stairs. From our third-place Austin entry for the 2025 National Single Stair Design Competition.
Single Stair Housing Studies, Austin, TX.
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#primary_projects & @rukamathu with the @croft_co2 system
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#singleStairHousing #infillHousing #pointAccessBlocks

Catch up with friends at the foot of the stairs. From our third-place Austin entry for the 2025 National Single Stair Design Competition.
Single Stair Housing Studies, Austin, TX.
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#primary_projects & @rukamathu with the @croft_co2 system
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#singleStairHousing #infillHousing #pointAccessBlocks

🚨 Cute details alert 🚨
1. A mudroom with a view
2. The wood stove fireplace
3. The world’s cutest dresser
4. A dog cave for Murray in the library’s daybed
Prairie House, Hiram, ME.
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#primary_projects #Maine #passiveHouse

🚨 Cute details alert 🚨
1. A mudroom with a view
2. The wood stove fireplace
3. The world’s cutest dresser
4. A dog cave for Murray in the library’s daybed
Prairie House, Hiram, ME.
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#primary_projects #Maine #passiveHouse

🚨 Cute details alert 🚨
1. A mudroom with a view
2. The wood stove fireplace
3. The world’s cutest dresser
4. A dog cave for Murray in the library’s daybed
Prairie House, Hiram, ME.
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#primary_projects #Maine #passiveHouse

🚨 Cute details alert 🚨
1. A mudroom with a view
2. The wood stove fireplace
3. The world’s cutest dresser
4. A dog cave for Murray in the library’s daybed
Prairie House, Hiram, ME.
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#primary_projects #Maine #passiveHouse
BUILDING RESEARCH:
CENTERING BUILDINGS IN THE CONSTRUCTION OF KNOWLEDGE
The Preston H. Thomas Memorial Symposium, "Building Research" on April 17th seeks to reignite the curiosity buildings inspire by asking: How can we center buildings and the knowledge that emerges from their construction within broader conversations about research in academia? How do we narrow the gap between academia and practice? How do we enable research to inform architectural practice?
Through rigorous single-building case-study lectures, participants will investigate the complex material and economic trade-offs among affordability, building performance, and carbon reduction as forms of applied research.
An accompanying exhibition titled CURIOUS CONSTRUCTIONS: SPECULATIVE MATERIAL ASSEMBLIES will be on display starting on April 16th in The Nave on the 3rd Floor of East Sibley Hall. The exhibition is a research and design initiative that explores unconventional, low-carbon material assemblies, challenging traditional construction practices through Building Research.
EVENTS PAGE
https://aap.cornell.edu/events/symposium/preston-h-thomas-memorial-symposium-building-research/
PARTICIPANTS
@andrewjamesholder
@saw.inc
@french2d
@ja_ja_co
@studio.jih
@hannah.office
@primary_projects
@cobaltoffice
@buildingconstructionlab
@david__costanza
GRAPHICS
@bernardo.berga
@cornellaap
@cornell.architecture

Testing “Split Switchback Stair Housing” on a deeper site with a party wall condition. From our third-place Austin entry for the 2025 National Single Stair Design Competition.
1-2. Ground Floor Plan
3. Third Floor Plan
4. Sixth Floor Plan
Single Stair Housing Studies, Austin, TX.
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#primary_projects & @rukamathu with the @croft_co2 system
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#singleStairHousing #infillHousing #pointAccessBlocks

Testing “Split Switchback Stair Housing” on a deeper site with a party wall condition. From our third-place Austin entry for the 2025 National Single Stair Design Competition.
1-2. Ground Floor Plan
3. Third Floor Plan
4. Sixth Floor Plan
Single Stair Housing Studies, Austin, TX.
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.
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#primary_projects & @rukamathu with the @croft_co2 system
.
#singleStairHousing #infillHousing #pointAccessBlocks

Testing “Split Switchback Stair Housing” on a deeper site with a party wall condition. From our third-place Austin entry for the 2025 National Single Stair Design Competition.
1-2. Ground Floor Plan
3. Third Floor Plan
4. Sixth Floor Plan
Single Stair Housing Studies, Austin, TX.
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.
.
#primary_projects & @rukamathu with the @croft_co2 system
.
#singleStairHousing #infillHousing #pointAccessBlocks

Testing “Split Switchback Stair Housing” on a deeper site with a party wall condition. From our third-place Austin entry for the 2025 National Single Stair Design Competition.
1-2. Ground Floor Plan
3. Third Floor Plan
4. Sixth Floor Plan
Single Stair Housing Studies, Austin, TX.
.
.
.
#primary_projects & @rukamathu with the @croft_co2 system
.
#singleStairHousing #infillHousing #pointAccessBlocks

During vs Before. 👉 to see the rest of this construction photo and the rendering that preceded it! With @slo_haus
Dodge Mountain House, Rockland, ME
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#primary_projects
#Maine #passiveHouse
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#architecture #architecturedesign

During vs Before. 👉 to see the rest of this construction photo and the rendering that preceded it! With @slo_haus
Dodge Mountain House, Rockland, ME
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#primary_projects
#Maine #passiveHouse
.
#architecture #architecturedesign

During vs Before. 👉 to see the rest of this construction photo and the rendering that preceded it! With @slo_haus
Dodge Mountain House, Rockland, ME
.
#primary_projects
#Maine #passiveHouse
.
#architecture #architecturedesign

During vs Before. 👉 to see the rest of this construction photo and the rendering that preceded it! With @slo_haus
Dodge Mountain House, Rockland, ME
.
#primary_projects
#Maine #passiveHouse
.
#architecture #architecturedesign

On a very deep and narrow urban lot, the stairs double as a light well (with succulents) 🪴
Single Stair Housing Studies, San Francisco, CA.
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#primary_projects & @rukamathu with the @croft_co2 system
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#singleStairHousing #infillHousing #pointAccessBlocks

Client with great taste alert; bathroom edition.
Can’t wait till we shoot this one professionally with @gretarybus!
Prairie House, Hiram, ME.
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#primary_projects #Maine #passiveHouse
Adapting “Split Switchback Housing” to three new sites with different characteristics helped us stress test the idea and flesh out our vision for single stair multifamily housing in the US. Housing thats more sustainable, communal, and economical.
Single Stair Housing Studies
Austin, Denver, San Francisco, & Portland
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#primary_projects & @rukamathu with the @croft_co2 system
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#singleStairHousing #infillHousing #pointAccessBlocks

Doors into each wing from the sheltered courtyard create a casual vibe. Designed with @slo_haus.
Dodge Mountain House, Rockland, ME
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#primary_projects #passiveHouse

Doors into each wing from the sheltered courtyard create a casual vibe. Designed with @slo_haus.
Dodge Mountain House, Rockland, ME
.
#primary_projects #passiveHouse

Doors into each wing from the sheltered courtyard create a casual vibe. Designed with @slo_haus.
Dodge Mountain House, Rockland, ME
.
#primary_projects #passiveHouse

What’s better than laundry, planters, and hangout space on the roof? An excerpt from our third-place Austin entry for the 2025 National Single Stair Design Competition.
Single Stair Housing Studies, Austin, TX.
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.
.
#primary_projects & @rukamathu with the @croft_co2 system
.
#singleStairHousing #infillHousing #pointAccessBlocks

What’s better than laundry, planters, and hangout space on the roof? An excerpt from our third-place Austin entry for the 2025 National Single Stair Design Competition.
Single Stair Housing Studies, Austin, TX.
.
.
.
#primary_projects & @rukamathu with the @croft_co2 system
.
#singleStairHousing #infillHousing #pointAccessBlocks

What’s better than laundry, planters, and hangout space on the roof? An excerpt from our third-place Austin entry for the 2025 National Single Stair Design Competition.
Single Stair Housing Studies, Austin, TX.
.
.
.
#primary_projects & @rukamathu with the @croft_co2 system
.
#singleStairHousing #infillHousing #pointAccessBlocks
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