Consult with a local zoning lawyer to review your deed and zoning to see if the business you want to open fits your area or if you need a zoning variance.
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Hire an attorney to review your plan for a business in a residential zone in Eastchester.
Meanwhile become familiar with the local planning board and zoning resolution.
The answer provided to you is in the nature of general information. The general proposition being that you should try to avoid a bad outcome if you can.
There is not way to know if a business would be permitted to operate on the property without making inquiries to the local zoning official.
As a general zoning principal, once a grandfathered use ceases, it cannot be re-newed without a variance.
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