Signing a title report (received from the solicitor of the property) with any fine print and specific government reservations is unadvisable. Accept clearance reports that are lucid and specific. For instance, if you are interested in buying property that has been built over reclaimed land, make sure that building has been given clearance by the government. Precautionary measures will prevent you from getting embroiled in any future disputes. They will also help ensure that your home loans aren't scrutinized.
When buying property from a developer, you are entitled to question the company for their permissions and approvals for the property in question. A builder must have a ULC Order (though not always), IOD and CC for the project and the T&C Planning approved plans in order to begin construction.