Many existing sections have rights or restrictions attached to them. If you wish to cross another person’s land to access your own, or have your services (eg water, sewage, storm-water, electricity, telecommunications, etc) crossing another person’s land, an Easement will have to be surveyed and created.
If you wish to have a restriction on the use of a portion of your land (eg a limit on the building height) a Covenant can be created. Easements and Covenants are created for many purposes, but, to be legally enforceable, they must be registered on your Certificate of Title. A new Easement or Covenant survey is generally required to be prepared, and approved by Land Information New Zealand, prior to registration on the Certificate of Title.