HTG Team


Randy Rieger

Chairman and Founder

Randy Rieger is the Founder and Chairman of Housing Trust Group, a multi-faceted real estate development company that develops, owns, and manages properties throughout the United States.

Housing Trust Group and its related entities specialize in the development of multi-family rental communities, affordable multi-family rentals, multi-family student housing communities, commercial developments and multi-family housing sales. The company has developed, acquired, owned and managed several thousand units nationwide and is headquartered in Coconut Grove, Florida.

Matthew Rieger, Esq.

President and CEO

Matthew Rieger is a principal and serves as the President and CEO for Housing Trust Group, the parent company of various affiliated real estate companies. HTG has developed more than 4,000 units of multi-family housing and has completed real estate transactions which exceed more than $2 billion in commercial, land and residential developments across Florida, the Southeastern United States and Arizona.

Prior to joining Housing Trust Group, Matthew was with a large law firm and during his tenure, Matthew was involved in over $1 billion worth of transactions including acquisitions, development, re-financings, and joint ventures in the United States and abroad.

Matthew is a native of Miami and is a third generation Floridian. He is a member of the Florida Bar Association and American Bar Association and earned his Juris Doctorate from Nova Southeastern University. Matthew also holds a Bachelors of Arts degree in Geography from the University of Florida.



Scott Osman

Chief Operating Officer

Scott A. Osman is tasked with managing the operations for Housing Trust Group’s real estate development, property management, accounting and finance divisions.

Mr. Osman has more than 20 years’ experience in real estate finance, accounting, tax and operations. Prior to joining Housing Trust Group, he served as the Chief Financial Officer for New Urban Development in Miami, FL focused on financing and building affording housing developments within the Liberty City corridor.

As Chief Operating Officer for LG Capital Partners, based in Miami Beach, Mr. Osman managed the operations of over $200M of bridge loan structured financing for complex residential real estate transactions and hotel and land acquisitions throughout the State of Florida and New Jersey.

Mr. Osman is a Certified Public Accountant and a member of the American Institute of Certified Public Accountants. He earned his Masters of Business Administration in Accounting and Taxation from the University of Miami and holds a Bachelor of Science in Accounting (Summa Cum Laude) from Barry University. Mr. Osman was born and raised in Miami, FL.

Mario A. Sariol

Chief Financial Officer

Mario A. Sariol has more than 25 years of public and private accounting experience. Prior to joining Housing Trust Group, he was a partner at Verdeja & Dearmas, LLP where he spearheaded the tax department. Mr. Sariol served as Corporate Controller and Vice President of Accounting for the Related Group of Florida. He began his career in public accounting, auditing entities specializing in real estate development and mortgage lending. In addition, Mr. Sariol has a wide array experience in all matters of commercial and multifamily real estate sector.

A graduate of the University of Miami with a Bachelor of Business Administration, Mr. Sariol received his Master of Science in Taxation from Florida International University. He has assisted and raised more than $1 billion in debt and equity, as well as structured various complex real estate transactions in all facets of the residential real estate market.



Gilda Fernandez

Executive Vice President of Property Management

Gilda has over 17 years of real estate management experience with several of the top firms in the industry. She previously was a member of the Housing Trust Group family and returned in 2014 to oversee the operation of HTG Management, a full-service real estate management company. Her responsibilities include directing operations and improving operating efficiency and profitability. She also plays a key role in working with the development team on all new development projects and coordinates asset management activities to ensure the success of all Housing Trust Group investments.

In addition to managing market rate and affordable housing, she brings her extensive knowledge and experience in Section 42 Low Income Housing Programs: LIHTC, SAIL, MMRB, County Bond, HOME, HUD, Public Housing, Risk Sharing, SHIP and other government affordable housing programs. She holds the specialized designation of Housing Credit Certified Professional and Certified Occupancy Specialist.

Humberto Del Valle

Executive Vice President of Construction

General Contractor with over twenty five years of experience in both residential and commercial/industrial construction. Responsible for over $200 million dollars in development and construction projects. Proficient in scheduling, coordinating, and team building, through all facets of construction from land acquisition/development to obtaining the Certificate of Occupancy.

Bert holds a Bachelor’s degree in Finance from Florida International University, as well as a General Contractors License, Master Plumbing License, and Real Estate Broker’s License in the state of Florida.



Al Hernandez

Senior Vice President 

Al has 30 years experience in the finance and accounting sectors for private and public companies. Prior to joining Housing Trust Group, he was the Chief Financial Officer of The Easton Group, a commercial real estate broker, property owner and manager. Previously he was the Chief Accounting Officer for The Related Group, the largest multifamily condominium and apartment builder in the country. He started his accounting career with General Development Corporation as senior accountant.

Al is a Certified Public Accountant and holds a Bachelor of Business Administration Degree in Accounting from Florida International University.

Mario Robaina II

Senior Vice President of Finance

Mario Robaina has over 20 years of experience in Finance in Real Estate, Investment Banking and Private Equity. At HTG, Mr. Robaina has been primarily responsible for structuring, modeling, underwriting, negotiating and closing of a variety of multi-family 9% and 4% LIHTC developments. In addition, he has been involved as the Asset Manager of a portion of HTG’s Operating Portfolio. Prior to joining HTG in in 2015, he closed over $1 billion in all manner of new construction, redevelopment and refinancing real estate transactions including multi-family for sale, market rate rental, LIHTC rental, commercial, office and industrial developments.

Mr. Robaina received his Bachelors of Science in Industrial Engineering from Stanford University and holds an MBA from the University of Miami focusing on Finance and Management.



Christopher L. Shear

Senior Vice President of Development

Mr. Shear currently serves as HTG’s Senior Vice President of Development.  Since joining HTG in August of 2012, Mr. Shear has orchestrated the development of 10+ competitively funded Low-Income Housing Tax Credit developments, comprising 800+ units, in Florida.  Throughout Mr. Shear’s career he has been directly responsible for the development of over 2,500 multifamily units utilizing 9% and 4% LIHTCs, Tax-Exempt Bonds, TIF, CDBG, HOME Loans, FHLB AHP Loans, FHA insured mortgage products, Section 8 PBRA, PHA mixed-finance structures, and various local affordable housing subsidies.

In the summer of 2017 Housing Trust Group formed HTG America to expand their affordable and workforce housing operations into select markets outside of Florida and tapped Mr. Shear to help lead the charge nationally.  He is heavily focused on QAP/NOFA analysis, acquisition initiatives, financial structuring, and developing strategic partnerships with municipalities, not-for-profit corporations, and public housing authorities.

Mr. Shear is a LEED Accredited Professional and holds a B.S. in Economics, with a concentration in Real Estate and Urban Land Economics, from the University of Wisconsin-Madison.  Prior to joining HTG, Mr. Shear has served in leadership roles with both the for-profit and non-profit development firms.  Mr. Shear maintains a resolute passion for the development and preservation of affordable and workforce housing.

Jason Larson

Vice President of Development

Jason brings over 12 experience in financing multifamily developments to the HTG Team with projects funded by the Florida Housing Finance Corporation and the United States Department of Housing and Urban Development. Jason is responsible for the entire development process of both Low Income Housing Tax Credit and conventionally financed real estate developments including site sourcing and selection, valuation and feasibility, design and construction coordination as well as the sourcing, structuring and closing of debt and equity funding transactions.

Prior to joining Housing Trust Jason was responsible for development and asset management/re-positioning of affordable housing developments including refinancing, restructuring and conversion of affordable housing projects to market rate, and coordination of capital improvement and financial workout activities.

Jason holds a Bachelor degree in Finance and Real Estate from Florida State University.



Jose Romero

Vice President of Development

Jose Romero has substantial experience in real estate acquisitions and development, financial management, operations, and community involvement. As Vice President of Development, he is involved in site identification, financial underwriting and modeling, contract preparation and negotiation, project management, design oversight, and sourcing and structuring of debt and equity. Jose works with key stakeholders including not for profits, government agencies, institutional investors, and land owners to enhance communities with smart development.

Prior to HTG, Jose worked as a partner and consultant on affordable housing and industrial developments. He was responsible for conducting the feasibility analysis and due diligence related to new multifamily developments and multistate portfolio acquisitions. Jose is well versed in all aspects of Low Income Housing Tax Credit financing including Tax-Exempt Bonds, HUD programs and guidelines, Surtax, HOME, CDBG, and other related financing sources.

Jose received his MBA from Yale School of Management and received his BSE in Industrial Engineering from University of Michigan. He is also the Chairman of Read to a Child South Florida ( which is focused on building a love of literacy among underserved urban youth here in South Florida and across the United States.

Jake Zunamon

Vice President of Development 

Jake Zunamon brings substantial experience in real estate acquisitions, development and community involvement. As Vice President of Development, he is involved in site identification, contract negotiation, financial underwriting, project management, design oversight, and structuring of debt and equity.

Prior to HTG, Jake worked in numerous community building settings in a variety of roles throughout the US and abroad. Most recently working at Connections for the Homeless, a non-profit in his hometown of Evanston, Illinois. Jake is well versed in all aspects of Low Income Housing Tax Credit financing; including SAIL, Tax-Exempt Bonds, Surtax, HOME, CDBG, and other financing sources.

Jake received his BA from the University of Michigan at Ann Arbor and is a 2016 University of South Florida Community Real Estate Development graduate. Jake is fluent in both English and Spanish from his extensive time living in Chile and Spain as a Fulbright Scholar.



Bryan K. Finnie

Strategic Partner

Mr. Finnie, as President of Urbanfin, LLC, provides the HTG team strategic alliance with over twenty years of public and private institutional experience in structuring private banking, community development and affordable housing investments in targeted communities. He is an experienced public administrator having served as a city manager as well as holding several senior level executive positions in New York, New Jersey and Florida managing high risk community development and affordable housing investment portfolios. Prior to joining HTG he was the Business Development Manager for the Related Urban Group where he specialized in working with governmental agencies, public housing authorities, community redevelopment agencies and private investors to identify projects for Related Urban’s investments.

Mr. Finnie holds a BA from Tufts University and a Master’s Degree in Urban Planning from Portland State University.

Eric Weiner

Vice President of Asset Management

Eric Weiner directs the asset management of Housing Trust Group’s portfolio. Prior to joining Housing Trust Group, Eric served as a Consultant for the Florida Housing Coalition and as Multifamily Loan Program Administrator for the State of Texas. Mr. Weiner has over 20 years of asset management experience for a large institutional owner, a privately held affordable housing developer, and a faith based organization’s $6 billion portfolio.

Eric is a Certified Property Manager and member of the Institute of Real Estate Management. He earned his M.B.A from the University of Southern California and holds a Bachelor in Science degree in Economics from the University of California, Berkeley.



Kate Sosa, PhD

Vice President of Human Resources

Dr. Kate Sosa currently serves as the Vice President of Human Resources for both Housing Trust Group and HTG Management. She is responsible for attracting top-level talent as the HTG family continues to grow. Kate’s focus is on delivering a world-class experience for all employees from onboarding to talent management. This HTG approach enhances our family-oriented culture while solidifying our commitment to excellence.

Prior to joining HTG, Kate was a Senior Management Consultant for the City of Miami Beach and served as Vice President for a local property management company. She has over 10 years of experience in the human resource development field and has worked with Fortune 500 companies, such as Walt Disney World.

Kate has a doctorate in human resource development and a masters degree in business administration.

Nelson Torres

Information Technology

Nelson Torres brings 15 years of information technology experience to HTG.  Nelson has worked as an information security specialist in the financial and hospitality industries where he managed over 5,000 end users and created robust information technology programs.

Nelson has a Bachelor of Science degree in Information Systems Security and has been granted the Certified Information Security Manager (CISM) certification by the Information Systems Audit and Control Association (ISACA).  Mr. Torres has also been recognized by the Greater Miami Chamber of Commerce as a Technology Leader of the Year finalist.



Olga Chata

Corporate Controller

Olga Chata serves as the Corporate Controller for the Housing Trust Group. Her primary responsibilities include: overseeing the accounting and treasury activities of the corporate entities; reporting, planning, and analysis of company financials; and ensuring that there is an adequate system of accounting records in place.

She brings almost two decades of accounting experience to the company. Prior to joining the Housing Trust Group team, she worked with several other developers in the South Florida area, including Crescent Heights of America and the Lennar Corporation. Most recently, she spent ten years working through all facets of the residential real estate accounting process with the Related Group of Florida where she was an instrumental part of their venture into affordable housing.

Olga holds a Bachelor of Science in Finance from Florida International University.


Doris M. Arbaiza

Controller for Development

Doris M. Arbaiza supervises the development accounting department of Housing Trust Group. As the Controller of HTG, Ms. Arbaiza is responsible for the financial management of the development, corporate and construction companies producing and overseeing financial reports, cash management, tax reporting, audit preparation, and overall supervision of job cost accounting and general accounting practices.

Mrs. Arbaiza has more than 13 years of experience in real estate accounting. Prior to joining HTG, she worked at Cornerstone Group as a Senior Accountant where she acquired extensive accounting experience in construction and real estate development. Her extensive accounting experience in the industry includes high rise condominiums, condo-conversions, townhomes, and both 9% and 4% LIHTC multi-family affordable Housing development.

Doris received her Masters of Accounting and Bachelors in Accounting with honors from Florida International University.


Jose A Salinas

Jose A. Salinas

Controller for Property Management

Jose A. Salinas supervises the property management accounting department at Housing Trust Group. As the Property Management Controller of HTG, Mr. Salinas is responsible for all the accounting activities related to the rental operation, financial statements, compliance accounting report, cash management and tax preparation for both tax credit and market rate properties.

Mr. Salinas has more than 20 years of experience in real estate accounting, and the integration of accounting systems with third party vendors. Prior to joining HTG, he worked at The Related Group as an Assistant Controller, where he acquired extensive experience in the property management division, focusing on affordable housing, public housing, tax credit and market rate.

Jose received his bachelor’s in accounting and Minor in Business and Professional Management from Nova South Eastern University and is currently pursuing his master’s in accounting.


Housing Trust Group