We are specialists in vernacular architecture, which represents 90% of the buildings in the world. Vernacular architecture is an architecture which is indigenous to a specific time and place.

Union Architecture is a small firm. All aspects of the project, from start to completion, are under the direct control of the principal. We are able to accommodate client scheduling demands fluidly at all times.

Our office is a certified Small Local Business Enterprise (SLBE / ELBE) with the City of San Diego.

John Howard Eisenhart

Principal of Firm, founded in 2004.

Architecture License:
State of California #25743. 1995-Present.

Master of Architecture. University of Michigan. 1989
Bachelor of Science. University of Michigan. 1985

Community Historical Resource Membership:
Former City of San Diego Historic Resource Board Member 2006-2008.
Save Our Heritage Organisation. Board of Directors 2005-present.
Member of Society of Architectural Historians

Eva Luise-Juliane Thorn

Master of Architecture (Dipl. Ing. Architektur). University of Kaiserslautern, Germany. 2003
Bachelor of Architecture (Dipl. Ing. FH Architektur). Technische Fachhochschule Berlin, Germany. 1997

2010 – present Union Architecture.
2003 – 2010 Graham Downes Architecture, Inc., San Diego, CA.
1997 – 2003 Architekturbüro Thorn, Heuchelheim, Germany.

Community Historical Resource Membership:
Save Our Heritage Organisation. Member since 2005.
Member of Society of Architectural Historians.

California Historical Resources Inventory Database
Should you wish to read more about the history of one of the historic buildings we worked on: It’s public record! The historic report for any designated structure is available for download from the City of San Diego’s Development Services website at the following link: http://sandiego.cfwebtools.com/search.cfm?display=search

For optimal search results limit your entry to just one item, we find street names to work best. Example: If you are looking for a resource on E Street, simply type “E” in the address field.

Client testimonials
Available upon request.

We don’t actively pursue publications. But here are a few local write ups about us:

Social media
If you wish, you may follow our posts on Instagram @unionarchitecture