Mariandale Ossining Real Estate & Homes For Sale

IDX information © 2026 by the Hudson Valley Catskill Region MLS. All Rights Reserved. The data relating to real estate on this website comes in part from the IDX of the Hudson Valley Catskill Region MLS. Information is deemed reliable but is not guaranteed accurate by the MLS. IDX information is provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Based on information submitted to the MLS GRID as of 2026-02-06 15:18:24 PST. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. [Click here for more information](/mls-disclaimers/#778)