Does it matter if a patio is attached to the house?

Yes. Whether a patio fixes to the house changes how it is classified, and that changes what the certifier checks, most of all near the boundary. An attached patio is read together with the house it joins. Where it fixes to the roof or the wall, the house has to carry it, and close to a boundary the patio must not weaken the house’s protection against fire. A freestanding patio on its own posts is assessed as a structure in its own right, with its own distances. Neither is the easy option everywhere, and which one suits a lot depends on where the house sits.

What decides which way to go?

Where the house sits on the lot settles most of it. A patio off the back of a house set well in from the side fences can attach without coming near a boundary, while the same patio on a narrow lot may end up closer to the fence than the house is. Then the roof. A patio that ties into the house roof has to suit its pitch and its gutters, and its water has to go somewhere. Easements and mains matter for either kind, since the posts need footings, and footings near a sewer main go to the asset owner first.

Carports and sheds follow the same logic. Built against the house, they are read with it, and a carport’s open sides decide whether it needs a fire-resisting wall near the boundary.

Who decides?

The certifier, or the council where it assesses building work, classifies the patio from the drawings and assesses it on that footing. The council comes in when an overlay brings a planning question, or when the patio would sit closer to a boundary than the siting rules allow.

What goes on the site plan?

The plan has to say which it is. An attached patio is drawn against the wall it fixes to, with the line where it joins, and a freestanding one shows its posts and the gap to the house. Both show the distance from the patio edge to every boundary it faces, measured from the patio rather than the house, and the site cover with the new roof counted in.

Reading it for your own lot

RapidSiteplan reads the lot from its address in a minute, with the boundaries, the house traced from the aerial photo, the overlays and the mapped mains. Snap the patio against the house wall or stand it apart, and the sheet marks the attachment and dimensions every boundary distance as you move it. The patio and carport page shows the sheet, the sheds and carports page covers carports at kit size, and the council pages for every state show what each council maps. Start with the address. The post on verandah permits covers verandahs and enclosing one.

Common questions

Does it matter if a patio is attached to the house? Yes. An attached patio is assessed together with the house it joins, while a freestanding one is assessed on its own, with its own distances to each boundary. Which suits your lot depends on where the house sits and how close the patio would come to a fence.