Site plans for Cairns, Queensland: drawn in minutes
Need a site plan for a shed, patio, carport, deck, pool or granny flat in Cairns? Site plans and assessments in minutes, drawn over the real lot.
Towns and suburbs in Cairns include Cairns City, Smithfield, Edmonton, Gordonvale and Palm Cove.
Building in Cairns
Cairns measures setbacks to the outermost projection, the fascia, and anything closer than the state siting code or the council's plan needs a referral to the council for a siting variation.
Secondary dwellings are tightly defined. Outside the rural zone a granny flat needs a lot above a minimum size, has a floor area cap, adds a car space to the main house's two, and shares the crossover, driveway, street address, letterbox and bins, with no separate service connections or metering. Large rural lots allow a much bigger secondary dwelling.
Retaining walls have a height limit, and in mapped hillslope areas their total length and the volume of earthworks are capped. In a mapped landslip area, work avoids the mapped part or uses an existing benched pad. Cairns Regional Council offers a development application enquiry service.
What we hold for Cairns
For Cairns we hold the council’s own rules for:
- sheds, garden sheds, garages and carports
- patios, pergolas, louvred roofs, decks and shade sails
- pools, fences and retaining walls
- granny flats
- driveways, water tanks and shipping containers
We also hold its current fee schedule.
At each lot we check the state’s mapping for flood, bushfire, landslide, heritage and native vegetation. We also read the council’s application register for past applications on the lot.
Last checked
How approval works in Queensland
In Queensland a building certifier, usually a private one, gives the building approval for work on a house lot, and the council comes in for the parts it controls. The smallest structures are accepted development and need no building approval when they meet the state's standards. Anything larger needs building approval, and a structure that sits closer to a boundary or the street than the siting rules allow also needs the council's agreement to a siting variation; an overlay or the zone in the council's planning scheme can add a planning approval on top. The certifier and the council read the site plan for where the structure sits against each boundary, the house and any easement. Its size, its height and its distance to each boundary decide which way it goes, as per the Queensland Housing Code and the Building Regulation 2021.
Drawing the plan
Type the property address, the lot’s real boundaries load from official land records in Queensland, and you place the structure over the aerial view. The plan prints to scale with boundary lengths, setback distances, a north arrow, a legend, a site coverage table and a title block, as the site plan for a building approval or a DA.
What a certifier in Cairns will ask you
Is the carport open, or closed in?
How open the carport is changes whether it needs a fire rated wall near the boundary, and a roller door or a later enclosure reopens the question. A shed never takes the open carport exemption.
How high can a retaining wall and a fence go?
Each takes its own height test, and a retaining wall carrying a fence has its own approval. Both heights go on the sheet for the certifier to read together.
Is the lot in an overlay, and what is the zoning?
A flood, bushfire, heritage or character overlay can bring a planning approval on top of the building approval, and the zone decides which of the council’s rules apply. The mapped overlays are read at the lot as the structure goes on the plan.
How big can a granny flat be, and how far from the house?
The council caps a granny flat’s floor area, and some councils also limit how far from the house it may stand. The sheet prints the floor area and dimensions the distance to the house.
The figures for your own lot are read in a minute, from its address.
Every question a certifier asks is on the Queensland page.
Approval for the job in Cairns
Changes on the way
Rule changes announced for Cairns, for Queensland and for the whole country, the state and national lines in full on the Queensland page, each with the page that says so and the day we read it.
In the next 90 days
Nothing due in the next 90 days that we know of.
Later
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National Construction Code 2025
Source qbcc.qld.gov.au, read
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ABCB Housing Provisions 2025 (with NCC 2025)
Source abcb.gov.au, read
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AS 1926.1:2024 Swimming pool safety barriers
Source ncc.abcb.gov.au, read
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NCC 2025 Housing Provisions Part 10.8
Source ncc.abcb.gov.au, read
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NCC 2025 Housing Provisions Part 9.2
Source ncc.abcb.gov.au, read
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NCC 2025 Volume Two Part H6, Specification 42 and Housing Provisions Section 13
Source ncc.abcb.gov.au, read
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NCC 2025 Volume Two Part H8
Source ncc.abcb.gov.au, read
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State Planning Policy (draft)
Source statements.qld.gov.au, read
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National Construction Code, residential pause
Source treasury.gov.au, read
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Queensland Housing Code
Source business.qld.gov.au, read
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National Construction Code, next edition
Source abcb.gov.au, read
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No date yet
State-wide Bushfire Hazard Area (Bushfire Prone Area) mapping, published 2026
Source tiles.arcgis.com, read
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No date yet
AS 3959:2018 Construction of buildings in bushfire prone areas
Source store.standards.org.au, read
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No date yet
AS 4678-2002 Earth retaining structures
Source store.standards.org.au, read
What we changed for Cairns
No change to the rules we hold for Cairns yet.
Council notices
No story for Cairns yet.
The sources we read for Cairns
5 sources read for Cairns, the newest on , each below with the day it was last read.
Planning schemes and codes
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No change
Fees
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Cairns building & development fees
No change
Standards
Follow Cairns in a feed reader: www.rapidsiteplan.au/site-plan/cairns/feed.xml. Every council and state has one, listed on rule changes by council and state.
RapidSiteplan is design software: you confirm details, measure on site and your certifier or council makes the approval decision. The rule above is general information, not building or legal advice. Boundaries shown are indicative, a surveyor is recommended where exact positions matter.
Serving postcodes 4870 and surrounds.
Plans for the job
Questions people ask
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