References

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
Gensler
CHAFARI Associates
Graeber, Simmons and Cowan
Gromatzky Dupree & Associates
Grubb& Ellis
Harbor Group
Harris County
Hines
HKS
HNTB Architects
HOK

Jones Lang LaSalle
Kendal Heaton Associates
Kirksey
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
Transwestern
University of Texas - Austin, Texas
USAA
Westin Hotels
WHR Architects