Mark Castagna, Broker / Owner

20 years experience in Pinellas County and an expert in Distressed Property (Bank Owned & Short Sale), Mark and his team have extensive local knowledge and training and are ranked in the top 1% nationwide.  Mark has one primary objective: to exceed every customer’s expectations.


Certified Distressed Property Expert (CDPE)

Short Sales and Foreclosure Resource (SFR)

Certified Real Estate Pricing Specialist (C-REPS)

Certified Investor Agent Specialist (CIAS)

RESNET AMP Professional

Equator Platinum REO and Short Sale agent




2008 – Current    Broker/Owner Waters Edge Realtors

2006 – 2008        Broker Associate Weichert Realtors (purchased Doiron & Assoc.)

1999 – 2006        Broker/Owner Doiron & Associates

1994 – 1999        Realtor Elgin Real Estate Company

1984                   LeMoyne College, Syracuse, N.Y., with a Bachelor of Science (Accounting)


Diane Boake, Realtor

Diane has been a resident of St. Petersburg since 1990. With a background in customer service, She leads the admin/support team and always puts her clients first.  Diane is certified as a Distressed Property Expert (CDPE), and Investor Agent Specialist (CIAS) in addition to holding the Short Sale and Foreclosure Resource designation (SFR) and has extensive training in Equator and RESNET.  She is a member of the Women’s Council of Realtors and has completed training as a Senior Real Estate Specialist (SRS).  Her passion for the business makes it easy for her to make a full-time commitment to her clients.  Diane is a member of NAR, FAR, PRO, CDPE, CIAS, WCR, and the Star Power Club.

2008 – Current      Realtor        Waters Edge Realtors

2006-2008            Realtor        Weichert Realtors

2002-2006            Realtor        Marie Powell & Company

Waters Edge is Tampa Bay’s real estate resource. We are experts in distressed property with over 25 years of local knowledge and experience.  Our team prepares for the unexpected and has the resources to quickly overcome unforeseen obstacles. We are proud to offer our professional services in an efficient and effective manner.


Photo of Mark Castagna Real Estate
Mark Castagna & Diane Boake
5363 Central Ave

St. Petersburg FL 33710


Tel (727) 346-1907

Fax: (888) 482-1177