Leo Addimando
Managing Partner

Leo Addimando is a Managing Partner and Co-Founder of Alterra Property Group, LLC (“Alterra”). Over 15 years as a real estate entrepreneur, Leo has gained experience with a diverse range of real estate product types, invested in real estate throughout the United States, closed over $2B of real estate transactions, acquired or developed approximately 3,000 residential units, structured dozens of complex transactions, and overseen all aspects of numerous mixed-use real estate development projects. Currently, in his role at Alterra, Leo oversees management of the firm, provides overall vision and leadership to the company, spearheads the firm’s residential/mixed-use development program, and works closely with his two partners and senior management in making key investment decisions. Previous to his career in real estate, Leo was an early employee of, helping the company successfully complete an IPO in 2003. Before working at Orbitz, Leo worked as an Associate for the Boston Consulting Group. Leo has an MBA from the Harvard Business School (“HBS”) and a B.A in Economics and Political Science from the University of Michigan. He is also the President of the Building Industry Association (“BIA”), Treasurer of the Taney Youth Baseball Association, and a member of YPO. A native of Center City Philadelphia, Leo currently resides there with his wife (Brigitte Castaing Addimando, HBS ’05) and three children (Nico, Marcus, & Sophie). In his spare time, Leo enjoys spending time with his family, exercise, golf, attending live sporting events (youth and professional), and travel.

Jeff Pustizzi
Partner – General Counsel

Jeff’s career in real estate and finance spans the better part of a decade, during which he has gained a wealth of experience from both the legal and the business sides of the industry. Jeff began his career as an attorney at the Philadelphia law firm of Stradley Ronon Stevens & Young, where he honed his skills in the areas of commercial real estate, finance, land use and corporate transactions, including development, leasing, acquisitions, sales, historic tax credit transactions and the representation of lenders and borrowers. Prior to forming Alterra, Jeff worked with the real estate development firm of 806 Capital LLC on a variety of development and investment transactions. With Alterra, he currently manages all aspects of legal, financing, due diligence and operational matters for the company. Both as a developer/investor and an attorney, Jeff has been involved in hundreds of millions of dollars of real estate and financing transactions across a wide range of asset classes, including multi-family, condominiums, office, industrial and student housing. Jeff received an MBA and a B.A. in Finance from Villanova University, and a law degree from the Villanova School of Law. Jeff is licensed to practice law in Pennsylvania and New Jersey. Jeff currently resides in New Jersey with his wife and two children.

Matthew Pfeiffer
Partner – Director of Acquisitions

Matt is responsible for sourcing and executing acquisitions, across all property types. In addition, Matt is involved with raising joint venture capital and structuring financings. Prior to joining Alterra, Matt focused on acquisitions on the East Coast for CenterSquare, a real estate private equity firm located in Philadelphia. He began his career in real estate at Blackstone. Matt has an MBA from the Wharton School of the University of Pennsylvania and a B.S. in Finance from Georgetown University. Matt is actively involved with Wharton’s Zell Lurie Real Estate Center and Georgetown’s Steers Center for Global Real Estate. Matt resides outside of Philadelphia with his wife and two young children.


Mark Cartella
Director of Project Development

Mark oversees the execution phase of Alterra’s real estate development and capital improvement projects including all facets of the project delivery process with a focus on design and construction. Prior to joining Alterra, Mark worked several years in the Philadelphia Business Unit of Turner Construction Company, the largest construction management company in the world by volume, gaining unparalleled construction management expertise. After Turner, Mark worked 7 years at one of Philadelphia’s preeminent professional project management/real estate services company, Aegis Property Group. Over the course of his career, Mark has successfully managed the design and construction of various building product types ranging from highly sophisticated healthcare facilities, historic preservation/adaptive reuse buildings, higher ed/K-12 institutions, office space, and multi-family/mixed used developments with an aggregate volume valued in the billions . Mark is a graduate of Drexel University and holds a BS in Architectural Engineering, Mechanical Concentration, as well as a dual minor in Mechanical Engineering and Construction Management. He also holds a LEED AP designation under the USGBC.

Mark was born and raised in the Philadelphia area and currently resides in South Jersey with his wife and three children.

Jennifer Iannacone
Project Development Associate

Jennifer works directly with the Project Development team and the Acquisitions teams focusing on the project execution of various development and construction projects across Alterra’s portfolio. Prior to joining Alterra, Jennifer worked for Kramer + Marks Architects focusing primarily on affordable housing design and construction administration. Jennifer is a 2015 graduate of Marywood University and holds a Bachelor of Architecture and a minor in History. She is a LEED Green Associate under the USGBC and is currently pursuing her architectural license. A native of the Philadelphia area, Jennifer currently resides in Center City.

Liam Sullivan
Senior Development Manager

Liam works as Senior Development Manager focusing on Mixed Use and Industrial projects. Liam joined Alterra to bolster the strengths and add experience to the Development Team. Prior to joining Alterra, Liam was with Turner Construction in the Philadelphia Business unit, gaining experience in the field and developing project management experience. After Turner Construction, Liam joined URBN, the publicly traded parent company of Urban Outfitters, Anthropologie, Free People, and Terrain. Holding positions in both Development and Construction, Liam successfully brought to market projects throughout the U.S. and Canada. He has also held several senior positions with Philadelphia based development groups, including Shift Capital, a mission based Social Impact Fund. During his career, Liam has managed development and construction of projects ranging from historically significant adaptive reuse to technical healthcare facilities including a BSL3 to mixed-use developments. Liam is a graduate of Stony Brook University with a BS in Economics. Additionally, Liam is a credentialed LEED AP through the USGBC.

Liam lives in Philadelphia with his Wife and two Mutts. When they aren’t working, they enjoy traveling, snow and water sports, and backyard barbeques.


Henry Sullivan
VP – Acquisitions

Henry focuses on the acquisition of Residential, Mixed Use, Office, and Industrial value add properties for Alterra. Henry is responsible for underwriting Alterra’s acquisitions as well completing due diligence on these opportunities. Prior to joining Alterra, Henry worked at BlackRock where he gained extensive experience in the Fixed Income sector as a Risk Analyst for BlackRock Solutions, focusing specifically on mortgage-backed securities. Henry holds an MBA from Villanova University’s Daniel M. DiLella Center for Real Estate, and earned a Bachelor’s degree in Economics from Johns Hopkins University. Henry is a Philadelphia native and currently lives in the East Passyunk area.

Charlie Totten
VP – Industrial

Charlie has 9 years of experience in the real estate industry. Formerly at Fischer & Company, he spent his time working on all facets of strategic portfolio management and planning for numerous Fortune 500 companies through periods of both rapid network expansion and contraction. Throughout his career he has traveled extensively, leading millions of square feet of projects from inception to completion in 24 different states. At Alterra, he is responsible for the oversight of the fast-growing industrial vertical. Charlie is a 2010 graduate of Georgetown University and he currently resides in Pittsburgh with his wife and son.

Jeff Schaeffer
Director of Asset Management

Jeff oversees all asset management functions for Alterra Property Group. Prior to joining Alterra, Jeff was Vice President of Asset Management at Independence Realty Trust (NYSE: IRT), a role focused on leading strategic organizational initiatives in addition to the asset management of a diverse real estate portfolio. Previously, he spent time in several asset management roles at Resource Real Estate, a multibillion-dollar series of privately held real estate funds, primarily focused on multifamily asset transformation through value-add redevelopment efforts. Jeff began his career as a consultant within Deloitte Consulting’s Strategy and Operations practice, focusing on organizational growth strategy and opportunities with large, global clients. He holds a B.S. in Finance with a concentration in Real Estate from the Pennsylvania State University. Jeff currently resides in Center City Philadelphia.

Mark Gannon
Senior Associate- Acquisitions 

Mark focuses on property underwriting and due diligence across various property sectors at Alterra. Mark most recently served as an Associate Portfolio Manager and Senior Acquisitions Associate at Exeter Property Group, helping source and underwrite industrial transactions for Exeter’s flagship investment vehicle. Prior to Exeter, Mark was an Assistant Vice President at AEW Capital Management, focused on East Coast acquisition opportunities. Mark has a Bachelor’s degree from the University of Pennsylvania and currently resides with his wife outside of Philadelphia.


Thomas Baker

Tom Baker joined Alterra Property Group in May of 2017. As the controller, Tom is responsible for the management and oversight of the financial reporting and accounting functions of the company, as well as financial deliverables that are due to Alterra’s investment partners. Prior to Alterra, Tom worked for several private real estate equity firms in the Philadelphia area within multiple real estate asset classes. On the public side, Tom gained extensive real estate accounting and auditing experience while working for the operations and development teams of a global real estate investment trust and as an assurance auditor for PricewaterhouseCoopers (PwC) in their asset management practice (Funds and Real Estate). Tom holds a Bachelor’s Degree in Accounting from West Chester University and is a Certified Public Accountant for the Commonwealth of Pennsylvania. Tom currently resides in New Jersey with his wife and three children.

Lacee Kolodny-Glenn
Senior Accountant

Lacee joined Alterra in September 2018 as a senior accountant working directly with Alterra’s investment partners. Prior to joining Alterra, Lacee worked for RSM US LLP where she performed/provided transaction advisory due diligence and assurance services to her clients, which included Real Estate. Lacee holds a Masters in Accounting from the University of Maryland-College Park and an undergraduate degree in accounting from the College of Charleston. She is a licensed Certified Public Accountant for the State of Pennsylvania and a member of the AICPA and PICPA. Originally from Baltimore, Lacee currently resides in the East Passyunk area of Philadelphia.

Adam Gorodesky
Senior Accountant

Adam joined Alterra in February 2019 as a senior accountant working directly with Alterra’s investment partners. Prior to joining Alterra, Adam worked for KPMG US LLP where he performed audit and assurance services for a Fortune 500 public client and numerous private clients in various industries. Adam holds a Bachelor’s and Master’s Degree in Accounting from Pennsylvania State University and is a Certified Public Accountant for the State of Pennsylvania. Adam also holds a Certification of Advanced Study in Real Estate Finance from NAIOP Commercial Real Estate Development Association and an Argus Enterprise Software Certification. Adam is a Philadelphia native and currently lives in Center City.

Ileana Toro

Ileana joined Alterra in March, 2016. Ileana has over 20 years of Property Management experience. Prior to working at Alterra, Ileana was the Director of Property Management for Canus Corporation. Ileana had the overall responsibility for all phases of operation related to affordable multi-family housing, commercial properties and HUD Section 202 with rental subsidy for seniors and disabled residents. Ileana has a bachelor’s degree in Psychology with a minor in Special Education from Inter American University of Puerto Rico. Ileana has a Certificate in Human Resources and Non-profit Management from La Salle University. Ileana is a graduate of Bucks County Community College with an associate degree in Accounting and a Certificate in Accounting and Taxation.

Casey O’Connor

Casey O’Connor joined Alterra Property Group in June 2018 as a Real Estate Accountant. Prior to joining Alterra, Casey interned at KPMG Australia in Sydney, Australia and worked for Cortland Partners, a real estate company based in Atlanta, Georgia. She received a bachelor’s degree in business administration with a specialization in accounting from The Ohio State University in 2017.


Kate Peyton
Director of Property Management

Kate has 18 years’ experience as a professional property management leader. Throughout her career Kate has worked through all facets of property management, beginning in the industry as a Leasing Consultant in 1999 in Decatur, IL and rapidly promoting throughout the United States. Kate has a vast understanding of building and facility operations ranging from niche luxury boutiques, high-rises, mid-rises and garden-style communities in both urban and suburban settings. Kate is also a certified renovator specializing in LBP and CPO.

As an expanding national company, Kate spent collectively 12 years with Management Resources Development. Throughout her tenure, Kate had impactful success in focusing on new development, lease ups, market research, and building teams to exceed projected numbers. In additional to being instrumental in operations compliance and company growth, Kate held regions throughout the Midwest, Southern and Southwestern portfolio including IN, KY, TN, AL, KS, TX and OK. Kate worked closely on the development of teams from ground breaking, building occupancy to stabilizing into conventional operations. Throughout the expansions of the company Kate successfully developed and implemented processes and systems to operate efficiently. Kate specializes in proficiently motivating teams to provide world class customer service while working closely to monitor revenue opportunities.

Moving to the Northeastern Region Kate has worked for both international companies and the top 3rd REIT in the nation. As a Regional Property Manager with AIMCO, Kate held a high profile portfolio in the revered Center City market, spanning from Greater Philadelphia to Central & Northern New Jersey through the Manhattan markets. Leading her teams to record setting revenue and retention growth, Kate received 3 honorable mentions from Founder and CEO during the NYSE Board Member calls for the successes of the Philadelphia market.

Kate has successfully mentored and developed Property Management professionals throughout her career and has been active in NAA, local Chambers of Commerce, Rotary Clubs, BNI in multiple markets, Greater Philadelphia BID and Wounded Warrior Projects.

Greg Hicks
Director of Maintenance

Greg Hicks joined the Alterra team in November 2013 with over 20 years of experience in construction and property management. Prior to coming to Alterra Property Group, Greg rose through the ranks of larger companies like Village Green and Pinnacle Management where he had the opportunity to manage over a thousand units as well as oversee multi-million dollar capital improvement projects. As Director of Maintenance he is responsible for overseeing all facility operations across the Alterra portfolio. Greg likes to spend his free time in the outdoors and playing golf. He is also passionate about Philadelphia sports. Greg has a variety of professional licenses and certifications including OSHA 30 and Philadelphia building engineers license.

Teresa Steinberger
Property Manager

Teresa Steinberger joined Alterra Property Group in July of 2015. She is responsible for overseeing the day to day management and operations of multiple multifamily residential apartments and commercial properties. With more than 15 years of property management experience, Teresa has strong administrative skills, a deep knowledge of contracts and property accounting and excellent communication skills. Teresa is a graduate from Temple University with a Bachelor’s degree in Liberal Arts.

Ben Bevan
Property Manger

Ben Bevan joined Alterra Property Group in May of 2017 as a Property Manager/Leasing Associate. Ben has worked throughout the Philadelphia area in a variety of roles in Real Estate before joining Alterra. He has lived in the Philadelphia area his entire life, currently residing in Graduate Hospital. Ben is a graduate of Drexel University with Bachelor’s degree in Marketing.

Linnaea Bongiorni
Property Manager

Linnaea has been in residential real estate as an owner/operator for over 15 years and multi-family property management over 3 years. In addition to managing Heinz Lofts, a 266 unit multi-family housing community for Alterra Property Group, she also manages her own properties. Her experience and driven work ethic has impacted her success in executing transition of ownership and taking an active role in due diligence, set-up and execution of systems, policies and procedures and management of full renovation projects. She earned her Certified Apartment Manager certification through the Pennsylvania Apartment Association West in 2016. She also attended the National Legislative Conference in Washington, DC where she lobbied for the multifamily industry and spoke with various representatives from Pennsylvania. Linnaea serves on the Board of Directors as the Treasurer of the Pennsylvania Apartment Association West.

Leah McVay
Property Manager

Leah McVay joined Alterra Property Group in 2017 as Property Manager and Furnished Housing Executive. She is responsible for overseeing the daily operations of a conventional multifamily community along with developing and managing a furnished accommodations program for APG Living. She has over 15 years’ experience in all aspects of the property management industry, most notably in the furnished corporate stay sector. Beginning with leasing luxury apartments in the suburban Philadelphia market she was rapidly promoted to management roles and directorships. Sensing a need for furnished accommodations she was instrumental in developing a fully furnished product and successfully growing and managing the program for over 5 years. Leah is experienced in implementing innovative systems and strategies to improve organizations. She brings to Alterra a strong understanding of real estate marketing, sales leadership and team development. Leah is a graduate of Temple University with a Bachelor’s degree in Communications.

Justina Hill 
Property Manager

Justina Hill joined Alterra Property Group in December of 2017.  Justina has over 4 years of Property Management experience including new construction lease-up at a luxury garden style community with Toll Brothers in suburban Philadelphia . As a Property Manager for the scattered multifamily sites, Justina is responsible for daily leasing, marketing and contract negotiations along with addressing concerns involving property maintenance and repair needs. Justina is a graduate  from Temple University with a Bachelor’s degree in Marketing. Justina is originally from Lithuania and currently lives in the suburbs of Montgomery county with her husband and their two boys.

Trina Reddick 
Property Manager

Trina has over 7 years of experience in the Property Management industry with Aimco that includes luxury, garden style, and affordable housing. Trina is an organized, efficient professional with keen attention to detail and a focus on each resident’s best interests. Trina also has a strong background in peer mentoring, audit compliance, and redevelopment. Trina was extremely instrumental in the completion of the large infrastructure renovations project for  Park Towne Place Premier Apartments, completing 3,978 swing moves between 2013 and 2015. Trina offers her residents expertise in a diverse collection of management activities including resident relations, vendor management, lease compliance, and contract negotiation. She expertly addresses issues involving property maintenance and repairs, resident communication and budget preparation.

Trina Golphin
Property Manager

Trina Golphin is a native of the city of Philadelphia, and current Manager of The Commonwealth, a historical residential and commercial property located at 1201 Chestnut St. Trina’s strong family values and community-oriented approach causes her to place value on the importance of developing strong relationships with the residents of the communities that she serves. She has more than 15 years of experience managing residential and commercial properties throughout Center City Philadelphia, over these years, she has always maintained high expectations and performance for herself and her teams. Trina holds a B.A. in Business Communication from Chestnut Hill College, a Pennsylvania Real Estate License, and a Certified Apartment Manager designation, while also bringing her real-world experiences, relationships, and values to her work. She is committed to continuing to serve the residents of Philadelphia through high-quality property management.

Kelsey Olsen 
Digital Sales & Leasing Associate

Kelsey Olsen joined Alterra Property Group in October of 2018. She has an extensive sales and customer service background, working for many of Philadelphia’s top retailers. Kelsey is responsible for the digital marketing and assists with leasing at several of Alterra’s properties. She is a longtime resident in Philadelphia and grew up in the Philadelphia suburbs. Kelsey studied marketing and communications at Drexel University and Temple University, respectively.


Caitlin Cottrell
Office Manager

Caitlin joined Alterra in April 2019 as the Office Manager and Executive Assistant. She has an extensive background in Organizational Management, Executive Support, and Human Resources within the construction and engineering industries.

Caitlin has spent the past 8+ years assisting different teams in creating more streamlined processes within the office and managing all aspects of inter-office related items. She obtained her Bachelors of Science in Organizational Management from Colorado State University-Global Campus and is excited to bring her extensive skills and knowledge to Alterra Property Group. Caitlin is a North Jersey native but, currently resides in South Philadelphia with her husband and dog Ruger.