Queensland, Granny Flat Plans
Plan Draft’s granny flat plans are $4,990 fixed. Here’s what that includes, why a secondary dwelling costs more to draw than a carport or deck, and the other costs to budget for across the whole project.
Plan Draft prepares granny flat (secondary dwelling) plans for a fixed $4,990 across Brisbane and South East Queensland. It’s the price you pay for the drawing set, not a starting figure and not hourly. It includes the site plan (existing and proposed dwellings), proposed floor plan, all elevations, roof plan, a cross section, specification notes, engineer and certifier coordination, one revision round, and the final PDF for approval.
The drawing fee is the same wherever your block is, there’s no location surcharge between councils. What varies by council is the approval pathway and any council fees, which we cover below.
A carport is $2,490 and a deck or patio is $2,990. A granny flat is $4,990 because it’s a different kind of project: a full habitable building with a kitchen, bathroom, bedroom and living space, its own services, and a more detailed drawing set. The documentation has to show how it all works and how it sits against the existing home, which is more drawing work, and a longer 15–20 business day turnaround.
The plans are a small slice of the total. To budget realistically across Queensland, plan for these separate costs:
Private certification: quoted by the certifier based on the dwelling and complexity.
Structural engineering: quoted by and paid directly to the engineer.
Site survey: quoted by the surveyor if a contour and detail survey is required.
Council or development application fees, apply if the dwelling needs a development application rather than the accepted development pathway.
Infrastructure charges, some councils levy these above certain size thresholds. Ipswich, notably, applies none to its “auxiliary unit”.
Construction: the big one, quoted by your builder and varying widely with size, finishes and site. The plans are a fraction of the total project cost.
A granny flat already has several moving cost parts. A fixed drawing fee takes one of them off the table, you know the plan cost before you commit, and it doesn’t change if the drawings take longer than expected. Our detailed cost guide for Brisbane breaks the numbers down further.
We prepare fixed price granny flat plans at $4,990 for homeowners across Brisbane, Logan, Ipswich, the Gold Coast, Moreton Bay, Redland and the Sunshine Coast. Before any work begins we check your block against the relevant council’s secondary dwelling rules and flag any likely extra costs so your budget is realistic.
View the granny flat plans service or send us your project details.
Plan Draft charges $4,990 fixed for granny flat plans across Brisbane and South East Queensland. That covers the full approval drawing set, engineer and certifier coordination, one revision round and the final PDF.
The plans are a small fraction of the project. Beyond the $4,990 drawing fee, budget for certification, structural engineering, a possible survey, council or development application fees, infrastructure charges where they apply, and construction. Each of those is quoted directly by the relevant provider, certifier, council or builder.
A secondary dwelling is a full habitable building with a kitchen, bathroom and services, and the drawing set includes existing and proposed plans plus a cross section. That is why it is $4,990 compared with $2,490 for a carport or $2,990 for a deck or patio.
The $4,990 drawing fee is the same regardless of council. Council fees, infrastructure charges and approval pathways vary by council, and we flag what applies to your block before any work begins.
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$4,990 fixed for the plans. Send us your project details and we’ll confirm suitability and flag any likely extra costs within one business day.