Persohn/Hahn Associates is proud to to have provided consulting services
for architects, design firms, and and owners including:

3 D/I 
Aetna Life & Casualty
Bank of America
Beeler Guest Owens Architects, L.P.
Bexar County
Bexar County Hospital District
Blue Cross/Blue Shield
BOKA Powell
Ceasar Pelli Associates
Children's Medical Center - Dallas, Texas
Christus Spohn Health System
City of Austin
City of Houston
Cook Children's Medical Center
Cotera + Reed Architects
Cushman and Wakefield of Texas
Dallas Community College District
De Stafano+Partners
Devon Energy
Disney Development Corporation
DMIM Architects
Duda Paine
Exxon USA
FKP Architects
Foster + Partners
General Motors Worldwide Headquarters
CHAFARI Associates
Graeber, Simmons and Cowan
Gromatzky Dupree & Associates
Grubb& Ellis
Harbor Group
Harris County
HNTB Architects

Jones Lang LaSalle
Kendal Heaton Associates
Lake Flato Architects, Inc.
Lincoln Property Company
Marmon Mok
Memorial Hermann Hospitals
Methodist Hospitals - Houston, Texas
Moody Rambin Interests
Morris Architects
Nueces County
Page Southerland Page LLP
Parkhill Smith & Cooper, Inc.
Parkway Properties, Inc.
Patrinely Group
Perkins & Will
PGAL Architects
Pickard Chilton Architects
PM Realty Group
Powers Brown Architecture
Project Control
Reyler Vaughn & Koone, Inc
Robert A. M. Stern
RTKL Architects
Shalom Baranes Associates
Skidmore, Owens & Merrill
Smallwood, Reynolds, Steward, Stewart & Associates
Smith County
Smith Group
Spencer Partnership
Spillis Candela
St. Lukes Episcopal Hospitals - Houston, Texas
Steinbomer & Associates, Architects
Susman Tisdale Gayle
Tarrant County
Taylor & Mathis
Texas Medical Center - Houston, Texas
The Fairmont Hotels
The Hanover Company
Trammell Crow Company
University of Texas - Austin, Texas
Westin Hotels
WHR Architects