We are a team of makers, teachers, and lifelong learners who believe in the value of space. We are dedicated to creating unique, beautifully crafted, and lasting design solutions for our clients.

We take on projects of a broad range of program and scale, working closely with our clients to understand context and to define the unique story of each project.

We love not only the outcome, but the process of design, and it is our goal to make sure that our clients do too. Working holistically, we lead interdisciplinary project teams to deliver interesting, sustainable, and well-coordinated design solutions through the use of innovative digital tools and our expertise in material and building systems.

Most importantly, we recognize that our projects are not simply a built output that is designed, constructed, and then turned over to a client. We see our projects as ecosystems that must serve owners and occupants for their entire life cycle, and embrace the responsibility to deliver the best possible design solutions accordingly.

Lauren Thomsen Design is:
- A certified woman-owned business with the WBENC
- A Local Business Entity with the City of Philadelphia
- LEED and Passive House certified
- Licensed to practice in Pennsylvania, New Jersey, and New York

Awards and Press

Our Services

Planning and Feasibility Studies

In many cases, clients come to us with aspirations and are in need of assistance in planning their project. To determine project feasibility we work with them to identify specific parameters, process, and budget that will be required for the successful completion of the project. These services often include site analysis, zoning and massing studies, high level design options, and phasing and approvals sequence studies.
Architectural Design

We provide full service architectural design and specification for our clients. This is integrated seamlessly with our cadre of expert subconsultants on the project as well as the general contractor and subcontractors and specialty vendors. We coordinate and manage municipal approvals as required and lead the project team during the design process.
Construction Administration

Our team is involved in each project from conception through completion of construction to ensure the design intent is executed as per the architectural documentation during Constuction. We work with the general contractor and owner to proactively navigate field conditions and changes.
Passive House and High Performance Design Consultation

Our in house Passive House Design Consultants and LEED AP’s provide expertise to guide clients through the incorporation of sustainable strategies and certifications, coordinating seamlessly with our design team.

Our Team

Lauren Thomsen, AIA, NCARB, LEED AP

Principal
Matt Gindlesparger, RA, CPHC

Technical Director
Trevor Cordivari, CPHC

Designer
Ingrid Tripple

Marketing Director

Press

“We were taken with the quality of the work and the process undertaken by Lauren Thomsen Design. The firm has a deep commitment to Philadelphia in general and to the rowhouse in particular and we thought it was great that LTD celebrated the idiosyncrasies of both the rowhouse and the city in a lot of their work.”

– Brian Szymanik, on behalf of AIA Philadelphia

“Lauren Thomsen's streamlined addition to a century-old house has a contemporary palette that lets the historical details shine.”

– Melissa Dalton, Dwell

“Lauren Thomsen Design comes with a wealth of experience in historic renovation and new construction around Philadelphia. Lauren has an amazing ability of distilling and communicating complex architectural topics.”

– Kit Elsworth, guest host on Passive House Accelerator