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My home: does this renovation need approval

Garage conversion: does it need approval

Turning an existing garage into a room people live in: a bedroom, a study, a rumpus room or a self contained flat.

State by state

The position on an ordinary residential lot with no overlay. An overlay on your own lot can change it.

StateWhere it landsBuilding approvalSource
NSWNeeds checkingDependsCodes SEPP 2008 cl 2.52(1)(b)-(c), Housing Alterations Code cl 4.2(a), Housing Code cl 3.1(1)(b)read 2026-09-15
VICBuilding approval onlyRequiredVPP cl 62.02-2 and cl 32.08-5; no Sch 3 exemption for a class changeread 2026-09-15
QLDBuilding approvalRequiredBuilding Regulation 2021 (Qld) Sch 1 s 7 and s 8 do not reach a class changeread 2026-09-15
WABuilding approval onlyRequiredR-Codes Vol 1 (10 Apr 2026) cl 5.3.3 C3.1; LPS Regulations 2015 (WA) Sch 2 cl 61(1) items 5 and 6; Building Regulations 2012 (WA) Sch 4 cl 2 item 2(c)read 2026-09-15
SANeeds checkingRequiredNo published clause
TASNo approvalDependsTasmanian Planning Scheme SPP cl 4.3.2; Directors Determination cl 3.0.1read 2026-09-15
ACTDevelopment applicationRequiredPlanning (Exempt Development) Regulation 2023 (ACT) s 1.20(1)(a) and s 1.130read 2026-09-15
NTBuilding approval onlyRequiredBuilding Act 1993 (NT) s 55; no exemption in Building Regulations 1993 reg 3 or Building Note 114read 2026-09-15

Each row is read from the instrument named against it, on the date shown. Council controls sit on top of all of them.

What the job usually involves

Insulation, lining, a floor, a window for light and ventilation, ceiling height, and somewhere else for the car. The room has to meet the standards for a habitable room and the building changes class, which is why this is the one item on the list with no clean answer anywhere.

What it costs

Read off published projects that carry a price. There is no estimator on this page.

Fewer than 8 published projects carry a price for this, so there is no band worth printing. There are 0 so far.

Published projects in Alterations and additions · Whole home renovation, most recent first.

  • 纳德兰兹住宅扩建项目
    Alterations and additionsNedlands WA
    No price publishedPublished by builder

    纳德兰兹住宅扩建项目

  • 金斯平原住宅扩建项目
    Alterations and additionsKings Plains NSW
    No price publishedPublished by builder

    金斯平原住宅扩建项目

  • Balwyn North住宅室内改造
    Alterations and additionsBalwyn North VIC
    No price publishedPublished by builder

    Balwyn North住宅室内改造

  • 旺兹沃斯住宅改造
    Alterations and additionsSurrey Hills VIC
    No price publishedPublished by builder

    旺兹沃斯住宅改造

  • 北巴尔戈瓦拉住宅立面翻新与后部扩建
    Alterations and additionsNorth Balgowlah NSW
    No price publishedPublished by builder

    北巴尔戈瓦拉住宅立面翻新与后部扩建

  • Toorak遗产住宅翻新及二层扩建
    Alterations and additionsToorak VIC
    No price publishedPublished by builder

    Toorak遗产住宅翻新及二层扩建

    250 sqm · 32 weeks

Who did these jobsThe builders and trades credited on the projects above. Not a paid list.

Check your own address

The overlays on your lot are what decide whether the row above actually applies to you.

SeeBuilds

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Homeowners

Projects →My block →Quote check →Nearby →Find people →Build guides →

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Data

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Language

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Legal

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Data is used under its publishers' open licences; see Data and licences.

Part of the BossLink Ecosystem · BossLink · Aus Property Circle · NDIS Circle · HomeTradie

© 2026 SeeBuilds