Based in Philadelphia, LO Design is led by Lea and Evan Litvin, architects with backgrounds in both high-performance architecture and development.
Our work is shaped by the complexity of real urban environments and the belief that architecture can be both rigorous and generous.
We’re as interested in the process as we are in the result. That means working closely with clients, consultants, and communities to guide projects from concept to construction. We take pride in designing well and delivering well—balancing design authorship with a culture of collaboration.
Lea Litvin
AIA LEED AP BD&C / Principal
Lea Litvin is a licensed architect, LEED AP, and co-founder of LO Design, a WBE-certified architecture studio known for precise, modern and impactful work across residential and commercial sectors.
Her portfolio spans campus-scale projects, award-winning housing, and high-profile work like the LEED Platinum U.S. Embassy in London with KieranTimberlake. In 2017, Lea was awarded the Rose Fellowship, leading $20M+ in publicly funded development at HopePHL and shaping affordable housing and mixed-use projects in West Philadelphia.
Lea has served on the Board of the Community Design Collaborative since 2017 and teaches undergraduate architecture studios at the University of Pennsylvania.
She holds a Master of Architecture from UPenn and a BA in Architecture from Washington University in St. Louis.
Evan Litvin
RA, NCARB / Principal
Evan Litvin is a licensed architect in PA and NJ, co-founder of LO Design, and managing partner of Built Work, a design-build firm based in Philadelphia.
His work spans architecture, construction, and real estate development, with a focus on high-end residential design and adaptive reuse. He is currently leading the transformation of a 26,000 SF warehouse into a nonprofit hub, and has overseen large-scale residential projects across Philadelphia, including a 20,000 SF residence on Rittenhouse Square.
Evan is known for his strategic, design-forward approach to zoning and development, bringing clarity to complex urban conditions. He holds a Master of Architecture from the University of Pennsylvania and a Bachelor of Arts from the University of Colorado Boulder.
Press
Press Inquiries
info@lodesignco.com
2025 Dezeen
Lombard Homes featured by Houzz: “The Ten Most Popular Kitchens Right Now”
2025 Houzz
2023 AIA Philadelphia Design Awards
2019 The Philadelphia Inquirer
Philly family guts Graduate Hospital rowhome, Philadelphia Inquirer
2024 Brick Industry Association “Brick in Architecture” Awards, Best in Class
2024 Philadelphia Inquirer
2022 Philadelphia YIMBY
2024 AIA Philadelphia
2024 ARQA
Alchemy Coffee in Interiores Minimalistas, “Café Alquimia, un tranquilo refugio”
2024 Interiores Minimalistas
The Low Penthouse wins AIA Philadelphia Honor Award for Interior Architecture
2024 Interiores Minimalistas
Alchemy Coffee by Lo Design: A Refined Space in the Heart of Philadelphia
2024 Best Cafe Designs
Lo Design Reimagines a Historic Row House in Philadelphia, featured in Design Milk
2024 Design Milk
Design Profile | Alchemy Coffee by Lo Design | AIA Philadelphia, Context Magazine Winter 2023
2023 Context Magazine
Renovation to historic Society Hill Townhouse featured in ARQA
2024 ARQA