Every new New York business filing, every day3 real estate holding businesses recently registered in Mamaroneck, New York.
Updated August 19, 2026 · Most recent business filing Jul 7, 2025

Every new New York filing, every day
See how it worksThis page lists new real estate holding businesses registered in Mamaroneck, New York. We currently track 3, sourced directly from the New York Division of Corporations and refreshed daily as new real estate holding companies file.
Recent additions include H&S MAMARONECK LLC, 324 MT PLEASANT LLC, and 134 SOUNDVIEW REALTY CORP.. The most recent real estate holding business filing was on Jul 7, 2025.
Each entry shows the filing date and, where we can verify it, the owner name and contact details. If you sell to real estate holding businesses in Mamaroneck, this is one of the freshest prospect lists in the market.
H&S Mamaroneck LLC is likely a holding company for the property at 345 Mamaroneck Ave, Mamaroneck, NY, with no indications of active business operations.
LLC formed to hold ownership of property at 324 Mount Pleasant Ave, Mamaroneck, NY. No operating business identified.
134 SOUNDVIEW REALTY CORP. is a New York corporation that appears to be a real estate holding company for a property at 134 Soundview Avenue in White Plains, NY, as evidenced by multiple property listing websites. The principal address is 422 Mamaroneck Avenue in Mamaroneck, NY, suggesting a separate administrative office.
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