Very sorry to hear of your grandmother's passing. I would imagine that there is an attorney handling her estate for your family, and he or she should be able to help you. If all you need is tax information, all you would need to do is go to the Hoboken Tax Assessor's office in City Hall on Washington St. If you actually need an appraisal, an agent below has noted several appraisers who could help you. Good luck with this and if you need any other information, please let me know.