Firm History

Lacina Group was founded in 1995 by Ivan Lacina. Soon after, Josh Heitler was hired as one of its first employees. Based on Lacina’s extensive experience in corporate facility development, the firm initially specialized in commercial office projects. The company quickly grew and diversified into a broader array of commercial, residential and retail projects. In 2003, Heitler became a partner and the firm was renamed Lacina Heitler Architects. In 2009, Lacina retired and in 2014 Doug Houstoun became a partner in the renamed Heitler Houstoun Architects. In 2021, HHA welcomed Kimberly Coca as its newest partner. 

Firm Leadership

Josh Heitler, AIA, LEEDAP, Senior Principal

Joined Lacina Group in 1997 and later advanced as a partner to form Lacina Heitler Architects in 2003. Oversees all aspects of professional Architectural and Interior Design consulting services geared toward corporate, institutional, residential and retail clients. Project highlights include W Hotel – Las Vegas, St. Regis Condo Tower, Drybar retail concept development and directing high-end residential projects in New York City and Los Angeles. Prior to Lacina Heitler Architects, Heitler worked on several large-scale projects including Rockefeller Center and Grand Central Terminal at Beyer Blinder Belle. Josh Heitler recieved a master of Design with distinction from the Harvard University Graduate School of Design and his B.A. in Design of the Environment from the University of Pennsylvania. Heitler is certified by the National Council of Architectural Registration Boards, is licensed in New York, New Jersey, Pennsylvania, Connecticut and Nevada and is also a LEED Accredited Professional.

Doug Houstoun, RA, LEEDAP, Principal

Joined Lacina Heitler Architects in 2002 after receiving a Bachelor of Arts in Architecture from The University of Texas at Austin. Doug and was named an Associate under Lacina Heitler Architects in 2007 before becoming a Partner in 2012 to form Heitler Houstoun Architects. He is a licensed architect in the State of New York and Texas and has been a LEED accredited professional since 2004. Doug oversees professional Architecture services in the areas of Residential, Retail and Corporate Office spaces and the construction administration of numerous residential, large scale retail and institutional projects, including the completion of the YMCA’s first LEED certified camp building in the US in 2009. Prior to working with HHA, Doug worked at Gensler on large scale commercial projects for companies such as Paine Webber, UBS Warburg, Univision, Federal Reserve Bank of NY, JP Morgan Chase, and Lehmann Brothers.

Kimberly Coca, AIA, Principal

Joined Heitler Houstoun Architects in 2012 and was promoted to Principal in 2021. A licensed architect in NY, NJ, IN, and OH, Kimberly excels in leading diverse projects from concept to construction, with a focus on wellness, retail and residential uses. Kimberly’s design philosophy is human-centric and detail-oriented. She has developed award-winning concepts for clients like Clean Market and holds a design patent for a custom fixture which brings a hospitality approach to a medical accessory.  Her portfolio includes the award-winning flagship design for Vuori, as well as detailing and scaling architectural brand standards for clients such as Madison Reed, Mate Fertility, and Modern Age into national roll-out. Kimberly oversees all aspects of various private residential projects, including interiors and new construction. Her work in New Development encompasses notable projects such as Pitkin-Berriman (60-units) and Cypress Hills Senior Housing (53 units), both in collaboration with the CHLDC. Before joining HHA, she contributed to commercial and institutional projects at Curtis + Ginsberg Architects, including the National Dance Institute in Harlem and R3, a 100-unit affordable housing building.

Allison Adderley, RA, Senior Associate

Joined Heitler Houstoun Architects in 2013 after relocating to New York City from Buffalo, NY and was named Senior Associate in 2021. Allison brings over 10 years of on-site construction experience having worked in both as an Architect and on-site supervisor for a residential and commercial General Contractor. Allison has researched and experimented with concrete as both a construction material and art media and in 2012, completed an award winning art installation in which she poured 10 tons of concrete, suspended inside a grain silo, as part of an art exhibition. Allison has also taught design and construction technology at the University of Buffalo. Prior to joining HHA, Allison was involved in the design and drafting of several municipal and commercial projects, most notably the large renovation of HSBC Arena (now First Niagara Center), a 18,000 seat venue, in Buffalo, NY.

Alex Korby, RA, Associate

Joined Heitler Houstoun Architects in 2012 after receiving a Bachelor of Architecture from Iowa State University. He was promoted to Associate in 2018 and has managed numerous residential, commercial and retail projects. Highlights include The Lawn Club, 305 Fitness, Hive & Colony, Toms Shoes, Spruce & Bond, Skin Laundry and Pure Barre tenant fit-outs, in addition to many residential condo renovations, single and multi-family projects, corporate offices and lobbies. He has worked on projects in various jurisdictions, but specializes in NYC and is one of the office’s leading resources on code and zoning compliance. Prior to HHA, Alex worked on large scale corporate, residential and industrial projects at LHB in Minneapolis, MN. Korby is a licensed architect in New York and Minnesota.


Heitler Houstoun Architects translates imagination and knowledge into human experience. We are a full-service, collaborative design studio offering expertise in architecture, interior design, space planning, and project management to a wide spectrum of corporate, residential, and retail clients. Our purpose is to provide a built environment that inspires creativity, promotes growth, and nurtures well-being. Utilizing our collective experience and resources, we seek to understand the specific site and program of each project and deliver a high-quality solution that meets the specific needs and exceeds the expectations of our clients.





Site Planning Zoning Analysis
Building Code Analysis
Schematic Design Design Development
Construction Documents

 Finish & Material Selections
Fixture Specification
Furniture Selection & Layout
Color Schemes Mood Boards

Neighborhood Visioning
Design Charettes
Master Planning Feasibility Studies
Space Planning Test Fits

Concept & Rollout

Project Management


Concept Prototype  Fixture Design
National Rollout  Existing Design Evaluation
Brand Development Brand Manual
Franchise Support

Bidding Services
Construction Administration
Construction Coordination
Permits & Approvals

Graphic & Signage Design
Brand Development 3D Renderings
Virtual Reality Special Inspections
Professional Certification

Partial Client List


One of our core convictions is that at the center of any successful design project is a collaborative, open, design process. At HHA, this process begins with a thorough understanding of a client’s vision and requirements for a project. We then apply precedent, sketches, models, digital imagery, hand renderings and other means in order to explore the full range of possible design solutions.