Sonnenschein, Sherman & Deutsch, LLP

Who we are

Sonnenschein, Sherman & Deutsch, LLP, founded in 1957, specializes in the field of residential and commercial real estate, handling transactions of all kinds. Our transactional capabilities include acquisitions and sales of commercial and residential properties, including blocks of unsold cooperative and condominium units, development projects, commercial and residential leasing, commercial and residential mortgage financing and representation of cooperative apartment corporations and condominium boards. The firm also has an extensive practice in tax certiorari, challenging real estate tax assessments for many hundreds of properties. Our tax certiorari work includes dispositions on applications, pre-trial hearings, trials and appeals. 

Our clients

Our clients include cooperative apartment corporations, condominiums, lending and other institutions, developers and major real estate owners throughout New York City, as well as individuals wishing to purchase or sell their residences or investment properties. 

We also represent developers who are converting properties into cooperative or condominium forms of ownership, and have been involved in hundreds of such conversions, including extensive dealings on an ongoing basis before the New York State Department of Law, Real Estate Financing Bureau regarding same and the filing of amendments to the offerings. Because of our extensive experience in the cooperative/condominium field, we are uniquely qualified to effectively handle the tax certiorari issues of cooperative and condominium owned properties.

Contact Us


Our Office

  • New York Office


    494 Eighth Avenue, 16th Floor
    New York, New York 10001