Can an attorney from Rhode Island(Sellers Attorney) write an contract for sale for a home they wish to sell in New York?

This is a question of ethics, whether or not the preparation of a contract of sale constitutes practicing law in New York. I would suggest that you contact the New York State Bar Association's Ethics Committee to determine if it is ethical and proper. Some contract work you do not need to be an admitted NY attorney for it to be legal. You should get yourself as the buyer a New York attorney if you plan on closing, and it should be a NY contract, standard form, which are targeted for NY law.   Walter Jennings, Esq. Experienced New York landlord/tenant attorney.