Estate Law Questions? Ask an Estate Lawyer.
There are no asset limits for SSDI so your brother's benefits should not be affected. As to SSI, there is a maximum asset limit of $2,000 including money, property, investments. Therefore, by inheriting the real estate, it would affect your benefits. Perhaps consulting with a local estate attorney to see if a special needs trust could allow you to inherit the property but at the same time retain your benefits would be a good idea.
I hope that helped. Please ask any follow-up questions. Please rate my answer so that I may be credited for my time. I thank you in advance for your cooperation. Thank you.