Skip to main content

About me

Brian J. Thanasiu graduated cum laude from Northern Michigan University, receiving a Bachelor of Science with concentrations in land use planning and environmental science, before he went on to earning a master’s degree for studies in environmental law from Vermont Law School, and his law degree from Thomas M. Cooley Law School.

Mr. Thanasiu focuses his practice on residential and commercial real property matters throughout Southwest Florida. He represents owners, tenants, developers, lenders, and property owners associations in their acquisition, use, development and management of real property.  His experience in guiding complex transactions includes the review, negotiation and drafting of purchase and sales agreements, administration of loan documentation, facilitation of real estate development, and title examination for land acquisitions. He provides sound legal guidance to those buying and selling real property, and takes pride in making himself available to his clients when he is needed.

Mr. Thanasiu is admitted to practice law in the state of Florida. He is a member of the Real Property, Probate and Trust Section of the Florida Bar Association, and the Real Estate Section of the Collier County Bar Association.


Practice areas


  1. Real Estate: 91%
    5 years
  2. Debt Settlement: 5%
    5 years
  3. Landlord & Tenant: 2%
    5 years
  4. Land Use & Zoning: 1%
    5 years
  5. Foreclosure: 1%
    5 years



Fixed (sometimes)

Attorney endorsements

4 total 

Are you an attorney? Endorse this lawyer

  • Brandon Robert Bytnar

    I endorse Brian J. Thanasiu, Esq. Brian is a highly proficient and knowledgeable real estate lawyer. In addition to his experience and skill as a lawyer, Brian is a great person, earning him the trust and confidence of his colleagues and clients.


    Brandon Bytnar Estate Planning Attorney
    Relationship: Co-worker

  • W. Conrad Willkomm

    I endorse this lawyer.


    W. Willkomm Estate Planning Attorney
    Relationship: Supervised lawyer

Contact info

Cheffy Passidomo, P.A.

821 5th Avenue South
Naples, FL, 34102


FLMember in Good Standing201009/08/2015
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Board of Trustees Student Achievement AwardNorthern Michigan University2004
Work experience
TitleCompany nameDuration
AttorneyCheffy Passidomo, P.A.2014 - Present
AttorneyLaw Office Of Conrad Willkomm, PA2010 - 2014
School nameMajorDegreeGraduated
Thomas M. Cooley Law SchoolLawJD - Juris Doctor2009
Vermont Law SchoolLawMaster of Studies in Environmental Law2006
Northern Michigan UniversityEnvironmental Sciences and Land Use PlanningBA - Bachelor of Arts2004