The location of any Easements on properties will be noted on the Certificate of Title or are obtainable through your Local Council.
In all but a very few cases, such as with movable garden sheds and the like, no structure can be built over an easement.
In the situation (the most common) where sewerage easements are situated along back boundary lines they generally do not present a problem to home builders.
Where an easement is placed along a side boundary it may impact severely on your design and site layout, especially on narrower building sites.
The figure above shows a 3 meter easement through 2 adjoining home sites.
The positioning of the home on Site B with a minimum setback from the side boundary allows for a greater sunny open space area on the north side of the home.
Site A, as well as having reduced space for entertaining and the like has a 3 meter wide area on the south side of the home which would be in full shade for most of the day.
In the situation where north was in the opposite direction and the homes were mirrored on the sites and set to the right hand boundaries, the side boundary easement on site A would not impact as greatly.
In most situations Easements will not provide a major concern to home builders, but their location and the impact that they may have on building layouts and future extensions should be considered when purchasing properties.
Another point to note is that house footings need to be founded deeper if at or close to an easement, incurring additional construction costs.
In basic terms, an angle of 45 degrees is taken from the bottom of the easements depth. If the dwelling is within that 'angle of repose' then the footings need to be deepened to below that point to obtain a satisfactory 'founding depth'.