Are you applying for a permit and were told that you need a covenant agreement with Office of Zoning, Planning, or Housing? Or, are you trying to get a covenant on your property released?
Common covenants include: Unity of Title (unifies lots to allow development across property line), Covenant in Lieu (combining lots/parcels with different ownership), Single Family use (signifies that a property is a single family home).
NOTE: This page does not refer to Public Works covenants, which involve property in the right-of-way. Those can be found here.