Within Australia there are many different types of easements.
Usually Council has details on only stormwater, sewer, electricity & gas infrastructure. Board Sewer has an implied easement over it. House & unit sewer lines don’t have implied easements over them, so the easement if it exists would be noted on the Title. Stormwater may or may not have an easement over it. If the stormwater easement is not noted on the Title then Council may have some rights. Other infrastructure services may or may not have similar rights.
Infrastructure easements can often be built over at the discursion of the group (Council / utility) that the easement is in favour of.
Most other easements (drainage, right of carriageway, right of services etc.) are noted on the Title. It is unusual that you can build over these easements. It really depends what is contained within the easement documentation associated as described on the Title.
Beware that infrastructure easements may not be noted on the Title. It is appropriate to search council records thoroughly & check dial-before-you-dig plans.