Most Yarrabilba homes are only a few years old, and the first thing owners want is a proper roof over the back slab. The alfresco that came with the house is usually just big enough for a barbecue. A patio that doubles it makes the backyard usable from November to March.
Approval in Yarrabilba works a little differently to an older Logan suburb, because more than one set of rules can apply to the same lot. Here is how it fits together, and what to have ready before you ask for a quote.
Three layers of rules
A patio or carport on a Yarrabilba lot can be shaped by three things at once:
- The building approval. Every roofed patio over the small exempt size needs one, issued by a private certifier with engineering for your wind rating. This part is the same everywhere in Queensland.
- The plan of development for your stage. Much of Yarrabilba sits inside a state Priority Development Area, where the approved plan of development for each stage can set the setbacks, site cover and building envelope for your lot. Where it applies, your certifier uses it in place of the standard Queensland siting rules.
- The estate design guidelines in your contract of sale. These are about how things look: colours, materials, roof shapes and what can be seen from the street. They are a private agreement with the developer, separate from council.
Logan City Council still runs the water and sewer, and Logan Water is the body that assesses building near its pipes. So a single patio can involve the certifier, the developer and council’s water business.
Where to find your documents
- Your contract of sale. Look for annexures called design guidelines, building covenants or a building envelope plan.
- The plans from your house build. The site plan shows the boundaries, the house, easements and often the sewer connection. The approval documents show whether the house was built to a bushfire attack level (BAL).
- The plan of development for your stage. Your builder, conveyancer or certifier can usually get it, or ask the developer’s sales office.
Send us whatever you have. Even a photo of the site plan saves a lot of guesswork at the measure-up.
What the estate guidelines usually cover
Every estate writes its own, so read yours rather than relying on a neighbour’s. The common topics for a patio or carport are:
- Roof and post colours, often to match or complement the house roof.
- Whether a structure can be seen from the street, and how far it sits behind the front of the house.
- Carports at the front, which some guidelines limit or ban outright.
- How long the guidelines last. Many run for a set number of years or until the estate is finished. If yours has expired, only the council and building rules are left.
Where the guidelines need a sign-off, the developer usually wants drawings showing the size, height and colours. We prepare those from the same plans we use for the building approval.
Carports on a Yarrabilba lot
In most of Logan, an open carport up to 6 m × 6 m and 3.5 m high can sit right on the front boundary without a referral. That rule comes from the Logan Planning Scheme. On a lot governed by a plan of development, the plan’s own setbacks decide what is allowed at the front, and estate guidelines may add limits on top. Do not assume the Logan 6 × 6 rule applies until your certifier has checked which rules govern your lot.
A carport down the side of the house, or at the back, is usually simpler on a small lot.
Site cover on a small lot
On a small lot the real limit is often site cover: the share of the lot that can be under a roof. The house, the garage, the alfresco and the new patio all count. Your plan of development or the Logan scheme sets the percentage. Take the lot size from your rates notice, add up what is already roofed, and the difference is what is left. On many new homes it is less than people expect, so we check this first.
Sewer, stormwater and the slab
- Logan assesses building near its sewer against the Queensland Development Code: footings about 1.2 m from small mains and 1.5 m from the centre of a manhole. If a post must go closer, a build-over application goes to council. Logan’s 2026-27 fee for that referral is $617.
- A new roof needs new downpipes, and the water has to go somewhere lawful, usually the existing stormwater line.
- An existing slab may not be thick enough to carry posts. New footings beside or through it are normal.
Bushfire edges
Lots near the bushland can carry a bushfire attack level. A patio attached to the house, or within 6 m of it, generally has to meet the same bushfire standard as the house. Steel framing and Colorbond roofing suit this well; the details such as gaps, screens and gutters are what change.
The order we do it in
- You send us your documents and the size you have in mind.
- We measure up, check the setbacks, site cover, sewer and overlays, and give you a fixed price.
- If the estate needs to sign off, we send them the drawings first.
- The plans and engineering go to the certifier for the building approval, plus any council referral.
- We build, usually in a few days on site, and the certifier signs it off.
Which roof?
Yarrabilba backyards get the afternoon sun and little shade from trees yet. For a patio you will sit under, an insulated roof is the usual choice: it is much cooler, quiet in rain, and has a flat ceiling ready for downlights and a fan. If the patio runs off a two-storey wall, a flyover keeps the light in the living room. We bring samples of both to the quote.