Are Restrictive covenants in title deeds to property enforceable?

Answer 1

Yes. Restrictions are enforceable and the time period during which they are enforceable depends on the type and the statute of limitations in your jurisdiction regarding restrictive covenants.

In Massachusetts if you purchased land that is encumbered with restrictive covenants "that run with the land", the covenants can last for 30 years by law.
Some documents that create restrictive covenants recite a termination date. You need to check the language of the instrument that created the restrictive covenants and your state statute of limitations to determine if they have expired. If they are not expired then they are indeed enforceable.

Certain restrictive covenants may not be enforceable even if the term of effectiveness has not expired depending on the restriction. For example, a restriction that the property shall only be sold to members of a particular race or shall not be sold to members of a particular race. In SHELLEY V. KRAEMER , 334 U.S. 1 (1948), the U.S. Supreme Court ruled that racially restricted covenants were non-enforceable. Laws such as the Fair Housing Act of 1968 additionally made such restrictions illegal to enforce.