Who We Are
Assemble Mass, LLC is an award winning New York and New Jersey licensed architecture practice. We believe good design and well thought out spaces should be an equitable experience.
Assemble Mass was founded by Jason Kim in 2018. Jason Kim, AIA, LEED GA, is a NY & NJ licensed architect with nearly a decade and a half of experience delivering high-impact projects globally. Jason leads multidisciplinary teams through all phases of design, managing complex programs ranging from award-winning boutique works to a million-square-foot pediatric healthcare fit-out. Having refined his expertise at SOM, HOK, Gensler and ZGF, he bridges technical rigor with a commitment to environmental resilience. He was a finalist in the 2023 Land Art Generator and featured in “Land Art as Climate Action.” Jason holds an MSAAD from Columbia University and a B.Arch from USC. His career reflects a rare mastery of both large-scale project management and high-level conceptual design.
What We Do
We accelerate commercial fit-out project delivery—including retail, corporate office, and healthcare—across New York and New Jersey through fast-turnaround architectural execution and local code navigation. We provide agile, permit-ready spatial strategies and fit-out designs that eliminate tenant uncertainty, streamline municipal approvals, and transform commercial spaces into high-functioning, revenue-generating environments.
Services
Architecture
Interior Design
Zoning Analysis
Test Fits
Concept Design
Construction Documents
Construction Administration
Permitting
Urban Planning
Ask about our flat-fee test-fits!
Awards +
Published Work
2023
Land Art as Climate Action: Designing the 21st Century City Park
2022
Land Art Generator Finalist
2021
Assemble Mass participated in After the Drought Exhibit at Grand Hornu, Belgium
2019
Assemble Mass’ Water Everywhere is shortlisted for ADO’s Water Future Challenge
2014
Published in 32 “Discarded” Helsinki Guggenheim Proposals You Should Know About
Venice Biennale 2014 - La Feria Concreta/ Fair Concrete
2013
Honorable Mention for Build a Bench International Design Competition