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About Us

Lighthouse Realty Services, Inc., is a boutique South Florida based company but not limited to a region or property types.  We offer a wide array of services that include appraisal services, commercial brokerage, and professional consulting in terms of due diligence, financial analysis, and acquisitions. Our corporate mission is to provide our clients with exceptional real estate services in order for them to meet their goals. Our team is market savvy and experts in their specialized fields, and the foundation in which Lighthouse Realty is built upon represents trust and mutual respect among all parties involved. Our goal is to create value for our clients in all transactions whether you are investing in commercial properties or leasing. Allow Lighthouse Realty Services to help achieve your real estate goals.


Blair C. Lee, MAI bio image

Blair C. Lee, MAI

Licensed Real Estate Broker



Blair is a real estate professional who utilizes his extensive experience in the industry to identify and analyze real estate opportunities and acquisitions that will align with a company's objectives. Mr. Lee is a native Floridian who has been active in acquisitions, appraisals, brokerage, and consulting for over 23 years. His employment experience includes 14 years as an Senior Appraiser for Callaway and Price, Inc. in West Palm Beach. During this time he gained extensive knowledge of the real estate industry and obtained the MAI designation with the Appraisal Institute. In 2005, Mr. Lee was named Vice President of Acquisitions for Ashkenazy and Agus Ventures in Boca Raton. The company is a private real estate investment company that purchased over $300 million in real estate of all asset classes during Mr. Lee's tenure. His acquisition and due diligence experience covered a broad range of properties including retail, office, industrial, hotel, multifamily, and redevelopment land opportunities. Mr. Lee worked directly with the principals to identify, analyze, and perform due diligence for real estate properties and notes.

Mr. Lee graduated from Florida State University with a Bachelor of Science degree in Real Estate and Business Management in 1990. He is a licensed real estate appraiser and broker in the State of Florida as well as a designated MAI with the Appraisal Institute. Mr. Lee is also a member of the International Council of Shopping Centers (ICSC), Realtors Commercial Alliance (RCA), Northern Palm Beach Chamber of Commerce, and a member of the Realtors Association of the Palm Beaches. 

Mark S. Zeidman bio image

Mark S. Zeidman

Licensed Real Estate Sales Associate



Mark Zeidman brings a diverse range of commercial experience to the Lighthouse Realty team. He has over 9 years of professional real estate and investment experience in Florida and Texas. Besides working with Lighthouse Realty, Mark founded his own investment company, MZ Enterprises, which specializes in office buildings and ALF’s (Assisted Living Facilities). From 2007 to 2011, he worked with Ashkenazy & Agus Ventures, a private investment firm in Boca Raton as in Acquisition Analyst. Since then Mr. Zeidman has worked with KW Commercial and was a partner in the commercial Real Estate division of Stateland Brown until venturing out on his own.

While working with Lighthouse Realty and himself, Mark has transacted more than 400,000 square feet of office/retail and over 400 beds of assisted living facilities. He currently holds real estate licenses in Florida and Texas and operates in both states. Mark specializes in property dispositions and Equity & Debt sourcing. Mark is originally from Houston, TX. He graduated from St. Edward’s University in Austin, TX with a BBA in Economics in 2003, and then earned his MBA in 2005 from Florida Atlantic University in Boca Raton, FL.

Gretchen Krise bio image

Gretchen Krise

Licensed Real Estate Associate



Gretchen Krise joined Lighthouse Realty Services in August 2015 and brought with over 10 years professional experience in the commercial real estate industry, specifically with research, analysis and transactional experience.  Upon joining Lighthouse, Gretchen has increased her transactional experience to include bankruptcy, seizures, investment real estate, Landlord representation & owner-user representation. 

Gretchen previously served as a CRE analyst and researcher with a Florida-based investment firm, where she was part of firm’s acquisition and asset identification team.  She began her professional career working with HUD programs.  Currently, Gretchen serves of the Board of Directors of Director for CCIM East Coast District and Commercial Realtor Alliance of Palm Beach and Greater Ft. Lauderdale.  Gretchen is actively pursuing her CCIM designation & pursuing additional professional education.   Peer recognition includes: Realtor Commercial Alliance, Office Deal of the Year, 2016; & Top Deal of the Year, 2016.

Originally from Montana and lived in both Iowa City, Iowa and Phoenix, Arizona before locating to Palm Beach County in 2000.  Her education includes a Bachelor of Arts degree in Political Science, Florida Atlantic University; a Bachelor of Arts in Social Sciences, Florida Atlantic University; Legal Studies/Paralegal, Associate of Arts degree; and licensed Florida Real Estate Sales Associate.

Current organization & past professional affiliations include: CCIM, ICSC, ULI, RCA. Gretchen has been a Palm Beach County resident since 2000.  She enjoys running and spending time with her dog.

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