You could be eligible for a very nice tax credit if you own your home and no other Real Estate, and your Gross Income is under $60,000. Many retirees can take advantage of this as they don’t count assets, only income. You might have millions in your retirement account, but as long as you are able to take under $60,000 a year or less you would qualify.
The deadline for the application is the end of September, and you have to apply every year.
For more information see this page and scroll to the Real Property Tax Credit Information and Application links.