Sebastian Karreth de Miguel

Currently: New York City, USA
MSc Real Estate Development, Columbia University
sebastian(at)karreth.com
Profile
Passionate about the intersection of Architecture, Hospitality, and Culture.
Jan 2026 – present
New York City, USA

Representing Owner on an 8,800SF value-add commercial repositioning in the SoHo Cast-Iron District. Managing addition of two floors and a penthouse on a landmarked asset, coordinating between general contractor, architect, and ownership while managing LPC compliance, field conflict resolution, and schedule adherence. Managing leasing efforts, overseeing marketing documentation, online listings, and prospective tenant tours.

52greenesoho.com
Sep 2025 – Jan 2026
Zurich, CH

Contribute to design development through drawings and physical models. Coordinate with suppliers and work within Swiss regulatory frameworks using Archicad, Rhino, GIS and Adobe.

allencrippa.com
Oct 2024 – Jul 2025
San Francisco USA

Designed and built physical models to explore form, material, and spatial ideas, collaborating closely with the team during concept and design development phases. Developed strong hands-on fabrication skills and a creative approach to representation using Rhino, Fusion 360, CNC, laser cutters, and shop tools to prototype original concepts. Explored innovative techniques with unconventional materials and methods. Managed the model shop and oversaw all phases of production, with most models supporting internal design exploration and select work presented to clients.

ono.co
Jun – Jul 2022 &
Mar – Aug 2021

Berlin, Germany

Experienced a deep dive into all phases of construction and project management in the heart of Berlin's historic Kurfürstendamm on the Fürst project. Project consisted of 47,000m² of new office space and tasks included LEED protocols, supervising construction processes to overseeing crane deployments.

cells.de
Jun – Jul 2022
Berlin, Germany

Spent two intensive months in the kitchen of this Chinese fine dining restaurant helping prepare the fixed menu and tea pairing. Through long shifts and incredible attention to detail, learned how to navigate a high-stress environment successfully while learning the inner workings of the fine dining industry.

uuu-berlin.de
Jun – Aug 2020
Munich, Germany

Learned to perform key maintenance duties within this office complex in Munich. Tasks included plumbing, heating, gardening, and janitorial duties.

luitpoldgelaende.de
Columbia University, New York
M.S. Real Estate Development
University of California, Berkeley
Bachelor of Arts in Architecture, Minor in City Planning
May – Aug 2023
Berkeley

Awarded $5,000 to research the architecture of refugee camps. Traveled to the West Bank and, upon return, showcased my findings through photographs at the College of Environmental Design at Berkeley.
Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model Physical model
2024 – 2025
ONO, San Francisco

Physical models built as analytical tools across residential projects at Obata Noblin Office, from 1:200 massing studies to 1:20 sections.
As a designer at Obata Noblin Office, I developed physical models as analytical tools — helping teams test massing, program, and spatial strategies — and managed the model shop through all phases of production. Working in cast concrete, walnut, beeswax, and CNC-milled foam, the models ranged from 1:200 massing studies to 1:20 sections.

Across projects I contributed to early concept work as well as later design stages, including spatial coordination and technical development, often through the lens of physical model making.

For Seal House, a California coast project, a late-stage change in beam depth required a clear spatial study: a 1:20 sectional model with a cast concrete base, and wood and paper articulating the structure and interior volumes. For Carriage House, designed for an architect in Idaho, a sectional model combined poured concrete, wood, and layered paper to communicate construction and material logic. For Willet, a coastal residence shaped by flood resilience and its sensitive site, I tested approaches from paper and cardboard to a beeswax cast of the terrain using a CNC-milled foam mould.
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House in Tokyo — 1:50 interior model House in Tokyo — model detail House in Tokyo — render House in Tokyo — plans and section House in Tokyo — interior model detail House in Tokyo — sectional model House in Tokyo — model in studio
2024
Tokyo, Japan

UC Berkeley, ARCH 100D

A five-unit residential building drawn from just two precedents, under the studio brief "Small Language Model."
This studio, titled "Small Language Model," challenged us to rethink architectural design and representation by working as if we were an algorithm trained on only two precedents. Every design decision had to be informed solely by these precedents, as if they were our entire architectural knowledge.

The goal was to design a five-unit residential building in Tokyo, drawing inspiration from House in Midorigaoka (Itsuko Hasegawa, 1975) and S-House (SANAA, 1997).

The final scheme contrasts an open ground floor with a compact, grid-aligned upper floor. A slight rotation in the grid generates secondary spaces that support circulation and services. This rotated grid influences both plan and section: light enters through a translucent polycarbonate facade on the second floor and a central skylight penetrates to the ground floor. Two separate entrances provide private access to each unit, while staircases run between the interior grid and exterior envelope. Upper-floor windows extend beyond the grid to draw in daylight. Material choices — precast concrete and polycarbonate — reference the precedents and underscore the project's balance between solidity and lightness.
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Werk 0 — render Werk 0 — site plan Werk 0 — plan Werk 0 — plan Werk 0 — massing model Werk 0 — site model
2025
Siggenthal, CH

Holcim

A workshop and exhibition hall at the starting point of Holcim's cement production, its concrete frame infilled with gabions of local limestone.
Werk Null marks the starting point of Holcim's cement production process and introduces visitors to the material origins of the industry. Located on the former rubber storage site in Siggenthal, the building functions as a workshop, exhibition space, and public interface between the factory and its surroundings.

The east and north façades are formed by a slender concrete frame infilled with steel gabions containing limestone sourced directly from the nearby quarry. This assembly makes the raw material of cement physically present while referencing the structural language of early industrial concrete architecture.

Inside, a single hall unfolds beneath a curved roof that echoes the factory's silos, unifying workshop, exhibition, and gathering spaces into a continuous spatial sequence. As both building and exhibit, Werk Null translates industrial production into an immediate, bodily experience and establishes a clear, public threshold to the site.

With Jonas Baltensberger and Mathis Steinmann.
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Force of Control — West Bank Force of Control — water tanks Force of Control — West Bank Force of Control — exhibition at UC Berkeley Force of Control — hillside town, West Bank Force of Control — separation wall Force of Control — watchtower Force of Control — covered market Force of Control — water tanks Force of Control — Al Fawwar Camp Force of Control — West Bank Force of Control — camp housing Force of Control — concrete construction Force of Control — alley Force of Control — street from above Force of Control — community interior Force of Control — residents Force of Control — exhibition
2023
Hebron (Al Khalil), West Bank

Judith Lee Stronach Travel Scholarship

Research into the architecture of refugee camps, asking how architecture works at once as a tool for survival and a means of control.
In the summer of 2023, I received the Judith Lee Stronach Travel Scholarship, awarded to a small group of students to support independent research and service work. I used the opportunity to explore the architecture of refugee camps, a subject largely absent from architectural education despite its global relevance. My research focused on how architecture functions as both a tool for survival and a means of control, as spatial arrangements often limit movement, enforce dependency, and regulate daily life.

The project began at the Venice Architecture Biennale, where Foster + Partners exhibited deployable shelters made from fiber-reinforced cement fabric. I then traveled to Israel and the occupied West Bank, where I was welcomed by a community organization in Hebron in exchange for teaching English. These connections led me to Al Fawwar Camp, established in 1949 and now home to over 12,400 people, with a population density more than four times that of New York City. Over time, its temporary shelters evolved into dense, permanent communities shaped by necessity and restriction.

Upon returning, I exhibited my work at the UC Berkeley College of Environmental Design Gallery, combining photographs with research from humanitarian and academic sources to frame architecture as both a response to crisis and a mechanism of control. This became one of the most formative experiences of my education.
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Tent in Lofoten, Norway Tent drawings Sleeping platform installed Sleeping platform assembled Sleeping platform base panels CNC milling the platform Original sketchbook idea Sewing the tent fabric Tunnel tent in a pine forest Tent below the Sierra, Lone Pine Cardboard prototype template CNC-milling the platform panels Plywood panels in the Honda Element Platform installed in the vehicle Platform assembled outdoors Carrying the platform panels
2020 – 2023
Transient

Two temporary dwellings: an ultralight tunnel tent, and a modular sleeping platform CNC-cut for the back of a Honda Element.
In 2020, I began designing a sleeping structure after purchasing 10 metres of fabric scraps from a Swedish tent company, prompting a six-month process to build a tunnel tent. The design consists of two parallel arches with fabric tensioned between them. The inner tent includes a waterproof floor and ultralight nylon panels that act as wind and visual barriers, while a transparent insect mesh at the top allows for ventilation and visibility. Elastic loops hold the poles away from the inner tent, and the outer tarp sits directly on the poles to provide weather protection.

Following the tent, I developed a more adaptable sleeping system: a modular platform for the rear of a Honda Element. After full-scale cardboard prototypes, I finalised a CNC-cut plywood design modelled in Fusion 360, which I taught myself for both CAD and CAM workflows.

The platform comprises three interlocking base panels with cross-lap joints, forming a rigid but lightweight frame. A central slot allows skis to pass through, while circular voids reduce weight. Two hinged panels fold out to form a flat sleeping surface and collapse for compact storage. The result is a stowable, vehicle-integrated system used extensively for travel across the western U.S. and Mexico.
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Excel, HTML, CSS

Illustrator, Lightroom, Photoshop, InDesign, Rhino 3D, Archicad, GIS, Fusion 360

Shopbot CNC Mill, Laser cutter, 3D printer, Carpentry
Native in German, English, and Spanish
Conversational in French
Cycling, Skiing, Fly Fishing, Rowing, Woodworking