Tarneit Building
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Decks, pergolas and garage conversions: unpermitted additions in Tarneit resales

How to tell whether a Tarneit home's additions had a building permit, and what it means for your purchase.

Owner Inspections · Tarneit 3029 · 2026-07-18

In short: Ask Wyndham City for a building permit search before you buy. Unpermitted decks, pergolas and garage conversions are common in Tarneit and can become your problem after settlement.

What needs a permit

In Victoria most decks over 800 mm, pergolas over 20 square metres, garage conversions to habitable rooms and granny flats need a building permit.

How we spot it

Different materials and workmanship from the original build, no smoke alarm or insulation in a converted garage, decks with no bracing or undersized posts.

What to do

Request a Property Information Certificate and a building permit search from Wyndham City. If work is unpermitted, negotiate, ask the vendor to regularise it, or walk away.

Why it matters

An unpermitted structure can be ordered removed, may not be insured, and can be a problem when you sell.

Written by the Owner Inspections team from inspections carried out in Tarneit. Licensed building practitioners, Building & Plumbing Commission registration CDB-U 53425.

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FAQ

Questions Tarneit owners ask about this

Can the vendor get a permit after the fact?

Sometimes, through a building surveyor, but it may need work to bring it up to standard.

Does your report confirm permits?

We flag work that looks unpermitted. Council records confirm it.

Does this apply outside Tarneit?

The standards apply across Victoria. The local detail here, soil, builders and council process, is specific to Tarneit and the Wyndham growth corridor.

Who can I ask about my own property?

Call 1300 471 805 or use the quote form and add your question in the comments. A licensed inspector will answer.

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