April Hughes


April Hughes, AIA, NCARB, LEED AP BD+C is Owner and Managing Principal at HPZS. A graduate of the University of Kansas, in 2014 April was named AIA Chicago Dubin Family Young Architect of the Year, and in 2013 she was the recipient of the AIA Illinois John Wellborn Root Award. Hughes is leading the firm, starting a new chapter in its history as a woman-owned business by embarking on a path to design and preserve a sustainable future for the Chicago community.

April has extensive sustainable design experience, highlighted by the completion of three LEED Platinum and one Gold project. She has collaborated on the creation of the Smart Code Sustainability Module, the City of Chicago’s Public Building Commission Water Reuse Manual, as well as the recently published Living Cities: Transforming APEC Cities into Models of Sustainability by 2030.

A leader in Chicago firsts, April collaborated on the design of Chicago’s first greywater system for a single-family residence, and one of the first variable volume vent hood installations for a restaurant kitchen in the City; her work has resulted in Chicago's first net-zero single-family residence (Yannell Residence) and first net-zero commercial building (Harmony House).

April’s work has appeared in the Chicago Tribune and reviewed by architectural critic Blair Kamin, Chicago Realtor, Shore Magazine, the Living Well Network, ABC7News Chicago, Elle Décor and numerous other publications. She was a featured interview by Geoffrey Baer on WTTW-Chicago (PBS) for the Yannell Residence on “Chicago Tonight.”

April is a contributing editor to She has contributed to the best-selling Sustainable Urbanism: Urban Design with Nature to the American Institute of Architect’s Young Architects Forum (YAF) Connection Magazine. She was a finalist in the national USGBC Emerging Green Builders Design Competition (2003) as well as AIA Chicago’s ReThink/ReDesign/ReCycle Competition (2004).

Henry Zimoch


Henry Zimoch, AIA is a Senior Principal at HPZS, and is the firm’s Director of Historic Preservation. A Chicago-area native, he graduated from the Illinois Institute of Technology in 1975 while working for the firm of Dubin, Dubin Black & Moutoussamy. Leaving DDB&M in 1978 he spent three years working for Marvin Ullman & Associates, and another three years as a field superintendent for a boutique general contracting company. Henry opened his own office in the Monadnock Building in 1984 and in 1991 joined Wilbert Hasbrouck, James Peterson, and Jay Sirirattumrong to form HPZS.

In his 23 years with the firm, Henry has continued to develop his expertise in historic preservation, renovation, and restoration through his work on some of the Midwest’s most significant historic structures. These include the People’s Savings Bank by Louis Sullivan (winning both The President’s Historic Preservation Award and the Chicago Chapter AIA Honor Award), Soldier Field, the Civil War era Seneca Grain Elevator, and the John Christian Residence by Frank Lloyd Wright.

Henry Zimoch has been a member of the AIA for over 25 years. He has written several magazine articles regarding the firm’s work. He also accepts speaking engagements that focus on the architecture and history of Chicago.

Henry is an avid collector of Frank Lloyd Wright and Prairie School books and memorabilia that extend from the sublime (the rare 1972 Japanese book by Nobumichi Akashi Frank Lloyd Wright in Imperial Hotel) to the mundane (a box of matches from the Imperial Hotel with a faux FLLW design). He also enjoys backpacking and films, including the early history and development of film technology and the movie industry.

Sheila Schaefer
AIA | IIDA | LEED Green Associate


Sheila Schaefer, AIA, IIDA is a Senior Associate and Senior Project Manager at HPZS. A registered architect with Undergraduate and Masters of Architecture Degrees from the University of Illinois, Champaign-Urbana, as well a Professional Diploma in interior design from the Harrington Institute of Interior Design, she is HPZS’s resident registered interior design specialist.

Since joining the firm in 1994, Sheila has been the firm’s leader in projects where architecture and interior design play a significant role in project delivery. The partnership of her architectural skills with expertise in space planning, and interior finish and furniture selection has resulted in the successful completion of a number of residential and commercial projects, including several historical renovation projects where specific attention to the existing historic architectural elements have been accentuated to provide an interrelation between the existing and the new. Sheila’s work includes the adaptive re-use of an existing 150 year old barn to a community center at Vehe Farm in Deer Park, master planning and renovation of Resurrection Lutheran Church, interior design of the Fort Massac State Park’s Visitor Center and Prairie Avenue Bookshop, interior renovation and additions to several residential properties, and interior build-out of various corporate offices such as Edison Credit Union, Land America, and Eaglemark Financial Services.

During Sheila’s twenty years at HPZS, she has held a teaching position at the Harrington Institute of Interior Design for interior programming where she helped guide students in the understanding of the fundamental concepts of design, code research, and spatial planning. She is both a member of the American Institute of Architects and the International Interior Design Association.

Outside the office, Sheila has over 15 years of experience in the ceramic arts and enjoys volunteering her time at a local Chicago ceramic studio where she assists students in the execution of handmade ceramic art, specializing in wheel thrown sculpture with Art Nouveau styling. She has also actively participated in the study of martial arts with a specific focus in weaponry training and teaching.

Caryssa Buchholz
Assoc. AIA | LEED Green Associate


Caryssa Buchholz is a Junior Associate at HPZS. She obtained her Bachelor of Science in Architecture degree from the University of Wisconsin-Milwaukee and her Master of Architecture degree with a concentration in Historic Preservation from the School of the Art Institute of Chicago.

Caryssa has worked for firms of varying size and focus throughout the Midwest, and brings with her broad experience in projects ranging from government initiatives, high-end retail, and higher education to adaptive reuse, sustainability, and historic preservation.

When not in the office or studying for her licensing exams, Caryssa enjoys spending time outside with her labradoodle, Abby, along the beautiful waters of Lake Michigan. When she’s not among the hustle and bustle of the big city, Caryssa can be found in her quiet, small hometown back in Wisconsin, spending quality time with family and friends.

Lisa Ross
Office Administrator, Accounting Manager

Lisa Ross is HPZS’s Office Administrator and Accounting Manager and is an integral member to the team, responsible for efficient non-technical office operations. A graduate of Chicago’s DePaul University with a Bachelor of Science in Business Administration and Psychology, Lisa brings over 25 years of experience in owning three businesses, which varied from travel to fundraising. She has a passion for working with small business entrepreneurs and focuses on intricacies of daily operations at the firm.

Lisa is currently the owner of an Italian Ice and Gourmet Popcorn business in Park Ridge. She is married to her elementary school sweetheart, and has two teenage boys that keep her busy.  She enjoys visiting different museums, going to concerts and dinners out with family, spending most of her free time attending her son’s musical performances, orchestra concerts and lacrosse games.

Maya Bird-Murphy
Associate AIA | LEED Green Associate | SEED


Maya Bird-Murphy is the Marketing and Business Development Coordinator at HPZS. She earned her Master of Architecture degree from Boston Architectural College in 2017 and Bachelor of Science in Architecture in 2014 from Ball State University and has been a designer at several award-winning architecture firms in Chicago. Maya believes that architecture should not be a privilege and must expand to accommodate more people through teaching and community engagement. When she's not at HPZS she's running Chicago Mobile Makers, a nonprofit she founded bringing design focused skill-building workshops to Chicago communities.