About Us
About Porthaven Partners
Porthaven Partners is a national real estate and advisory firm providing a wide range of services to institutional and private investors, banking institutions, developers, tenants and corporations.
By combining our real estate track record with our background and experience in public accounting, consulting and banking, we are able to provide unique guidance and solutions to accomplish our clients’ goals and objectives.
Our Services
Investment Sales
Porthaven Partners has completed in excess of $10 billion in commercial real estate transactions across the United States. Services provided to a variety of industry participants including institutional investors, private equity firms, developers, private individuals, REITs and corporations include the following:
Dispositions – Public Offerings or Private Placements of single assets or portfolios
Acquisitions – Asset or Portfolio Origination, Underwriting and Closing
Financing – Debt Placement or Equity solutions for Permanent Loans, Constructions Loans, Mezzanine Loans and Joint Ventures
Bank Consulting/Advisory
Porthaven Partners brings a unique blend of analytical and transactional expertise. With over $3.5 billion in transactional experience combined with backgrounds in audit, consulting, and finance, Porthaven’s Advisory division provides valuable insight to financial institutions and commercial real estate owners throughout the United States. In collaboration with various experts throughout the industry, the Porthaven Advisory division has developed a Property Evaluation product that provides financial institutions with high quality analytics covering all types of commercial real estate. These reports have been instrumental in helping our clients make decisions in a timely and cost-effective manner.
Management and Leasing
Porthaven’s Property Management and Leasing division specializes in commercial office, retail, and industrial properties. With over 1,200,000 SF of commercial property in Kansas, Oklahoma, and Texas, Porthaven’s clients range from publicly traded REIT’s to financial institutions to individual property owners. Porthaven Property Management’s goal is to provide the highest level of professionalism and stewardship.
The Team
Darren Sides – Partner
Kenneth Boykin – Managing Director
Kenneth Boykin – Managing Director
Darren is the founding partner of Porthaven Partners, and has been instrumental in working for over two decades with a wide range of clients including developers, financial institutions, publicly-traded REITs and private equity investors to develop strategies for optimizing commercial real estate development, ownership and disposition. Un
Darren is the founding partner of Porthaven Partners, and has been instrumental in working for over two decades with a wide range of clients including developers, financial institutions, publicly-traded REITs and private equity investors to develop strategies for optimizing commercial real estate development, ownership and disposition. Under his leadership, Mr. Sides has led teams in the completion of over $5 billion in commercial real estate transactions including industrial, office and retail properties.
Prior to Mr. Sides’ entry into commercial real estate, he spent approximately five years with PricewaterhouseCoopers, serving a variety of clients in developing optimum business turnaround strategies and determining underlying values of assets and credit exposure levels.
Mr. Sides holds his B.S. in Accounting from Louisiana State University.
Kenneth Boykin – Managing Director
Kenneth Boykin – Managing Director
Kenneth Boykin – Managing Director
Kenneth is a managing director at Porthaven and runs the property management and bank consulting divisions of Porthaven. In addition, Kenneth works with investment sales team to source and evaluation new opportunities.
Before joining Porthaven Partners, Mr. Boykin competed in NCAA Division I athletics as a tennis player for Oral Roberts U
Kenneth is a managing director at Porthaven and runs the property management and bank consulting divisions of Porthaven. In addition, Kenneth works with investment sales team to source and evaluation new opportunities.
Before joining Porthaven Partners, Mr. Boykin competed in NCAA Division I athletics as a tennis player for Oral Roberts University for four years, and during this time was named to the All-Conference team twice, and the NCAA All-Academic team three times. Kenneth still enjoys playing tennis and competing in other sports with friends.
Mr. Boykin earned his B.S. in Business Administration from Oral Roberts University.
Daniel Herrold – Managing Director
Kenneth Boykin – Managing Director
Daniel Herrold – Managing Director
Daniel is a commercial real estate investment advisor and founder focused on investment sales and equity placement across retail, restaurant, and industrial assets throughout the United States.
Over more than two decades, Daniel has advised on over $5 billion in completed transaction volume, applying a capital-first underwriting approach a
Daniel is a commercial real estate investment advisor and founder focused on investment sales and equity placement across retail, restaurant, and industrial assets throughout the United States.
Over more than two decades, Daniel has advised on over $5 billion in completed transaction volume, applying a capital-first underwriting approach and a clear understanding of how buyers, tenants, and sponsors behave across market cycles. While at Stan Johnson Company, he played a leadership role in expanding the firm’s national platform, including opening five offices across the U.S. beginning in 2009. He later continued his institutional advisory work at Northmarq.
Daniel is the creator of Tenant Expansion Report, a proprietary intelligence platform that tracks real-time expansion activity, site criteria, and decision-makers across a national universe of retail and restaurant brands. The platform is used to underwrite deals, source opportunities, and align capital with operating fundamentals rather than headlines.
Daniel publishes market commentary focused on pricing reality, buyer behavior, and capital flows through his State of the Market email newsletter. His insights reach a national audience of investors, developers, and operators, with a combined following of over 50,000 across LinkedIn and X (Twitter).
He is based in Newport Beach, California.
Zack Ziegenhorn – Senior Director
Matt Spangenberg – Senior Director
Daniel Herrold – Managing Director
Zack is a senior director at Porthaven focusing on investment sales and equity raises for industrial and retail properties across the country. In his short time in commercial real estate, Zack has been able to assist a wide range of clients in advising them on their acquisition and disposition needs. He emphasizes long-term client relati
Zack is a senior director at Porthaven focusing on investment sales and equity raises for industrial and retail properties across the country. In his short time in commercial real estate, Zack has been able to assist a wide range of clients in advising them on their acquisition and disposition needs. He emphasizes long-term client relationships and takes a unique approach to help each client achieve their personal goals and objectives.
Mr. Ziegenhorn began his career in commercial real estate directly out of college starting with Marcus & Millichap in their Tulsa office before transitioning into his current role. Zack enjoys spending time with friends and family, playing golf, and loves sooner football. He is also a member of the Sigma Chi Fraternity.
Mr. Ziegenhorn earned his B.A. in Communication from the University of Oklahoma in 2017 after spending one year playing college baseball at Seminole State College.
Matt Spangenberg – Senior Director
Matt Spangenberg – Senior Director
Matt Spangenberg – Senior Director
Matt is a commercial real estate investment advisor and Senior Director at Porthaven Partners, focused on investment sales and capital advisory across single- and multi-tenant net-lease retail, industrial, commercial land, and surplus real estate throughout the United States.
Matt advises investors, developers, and operators on asset posit
Matt is a commercial real estate investment advisor and Senior Director at Porthaven Partners, focused on investment sales and capital advisory across single- and multi-tenant net-lease retail, industrial, commercial land, and surplus real estate throughout the United States.
Matt advises investors, developers, and operators on asset positioning, capital strategy, and transaction execution, with an emphasis on disciplined underwriting, buyer behavior, and market-driven pricing. Over his career, Matt has advised on hundreds of investment transactions across primary and secondary markets nationwide. His approach is consultative and relationship-based, helping clients optimize outcomes at both the asset and portfolio level across market cycles.
Prior to joining Porthaven Partners, Matt served for over a decade as an Associate Vice President at Stan Johnson Company and later at Northmarq following its acquisition of Stan Johnson. Matt is also a licensed attorney and previously practiced real estate law with a focus on commercial real estate finance, bringing a legal and capital-structure perspective to complex transactions.
He is based in Chicago, IL.
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Hours
Open today | 09:00 am – 05:00 pm |
