GAIC Explained: Growth Areas Infrastructure Contribution in Victorian Property

If you are buying land in outer Melbourne — Cranbourne, Clyde, Pakenham, Mickleham, Craigieburn, Wollert, Tarneit, Truganina, Mambourin, Point Cook, Donnybrook, or the surrounding areas — there is a good chance your contract mentions the Growth Areas Infrastructure Contribution, or GAIC.

GAIC is a one-off charge levied on certain land that enters Melbourne's Urban Growth Boundary (UGB). It funds the roads, schools, hospitals, and public transport needed to service new suburbs. At current rates, it can add up to $127,000 per hectareto the cost of acquiring affected land — and in most cases, it is payable at settlement.

What is GAIC?

GAIC was introduced in 2010 under the Planning and Environment Act 1987 (Vic)(sections 201R–201ZY). It is a state-level contribution paid by landowners in seven designated Growth Areas when the land experiences a “GAIC event.”

The seven Melbourne growth-area municipalities are: Cardinia, Casey, Hume, Melton, Mitchell, Whittlesea, and Wyndham. If your property is in one of these councils and inside the designated Contribution Area, GAIC may apply.

How much is it?

The rate is reviewed annually by the Department of Transport and Planning and indexed to CPI. Current rates (updated 1 July each year) are approximately:

• Type A — Residential: ~$127,000 per hectare
• Type B-1 — Industrial / Commercial: ~$55,000 per hectare
• Type B-2 — Other: ~$55,000 per hectare

Note: these are per-hectare rates, pro-rated for smaller parcels. A 600 m² residential lot attracts approximately $7,620 in GAIC at current Type A rates. A 10-hectare development site would attract $1.27 million.

When is GAIC triggered?

A GAIC event is any one of the following:

1. Dutiable transaction— the sale or transfer of the whole or part of affected land. This is the most common trigger.
2. Subdivision— creating new lots within the affected land.
3. Issue of a building permit— for buildings with a construction cost over $1 million.

Once triggered, GAIC is payable by the landowner at the time of the event — typically the seller in a sale transaction. In practice, GAIC is often included in the purchase price the buyer pays, either directly or through settlement statements.

Exemptions, deferrals, and staged payments

• Family farm exemption— transfers between family members involving a farming business may be exempt.
• Staged payments— the landowner can elect to pay in up to 10 annual instalments, with interest.
• Deferral to the next GAIC event— pay at subdivision or when a building permit issues.
• Excluded building works— construction under $1 million does not trigger GAIC on the building permit pathway.
• Public authority transfers— transfers to or from public authorities are excluded.

How to check if GAIC applies to your property

1. Request a GAIC Certificate from the State Revenue Office (SRO).This is the official record. A seller must provide this with the Vendor's Statement if GAIC applies. The certificate shows the GAIC rate, any deferrals or instalments in place, and any exemptions claimed.
2. Check the planning certificate in the Section 32. Properties in a Growth Area should clearly indicate Urban Growth Zone or similar status. See our guide to Victorian planning zones for context.
3. Use VicPlan at mapshare.vic.gov.au/vicplan to view the precinct structure plan, UGB, and Growth Area layer. If your property is inside the Contribution Area, GAIC applies.

Red flags in the Section 32

• No GAIC Certificate attached, even though the property is clearly in a Growth Area — the vendor may have missed a disclosure obligation, which could give you Section 27 rescission rights.
• A GAIC Certificate showing deferred or staged payments— check who becomes liable at the next event (usually the buyer).
• A special condition pushing GAIC onto the buyer — not automatically a red flag, but needs to be priced into your offer.
• “GST-inclusive” pricewith no mention of GAIC — sometimes a sign GAIC was overlooked in the price calculation.

A practical example

Sarah buys a 500 m² block in Cranbourne East for $475,000 in 2025. The land was subdivided in 2024 and the seller's GAIC was deferred. The SRO now assesses GAIC at $6,350 against the lot (500 m² × $127,000/ha). Unless the Contract of Sale specifies the vendor pays, this becomes Sarah's liability at settlement.

Adding insult: GAIC is on top of stamp duty, and is not eligible for first-home-buyer concessions.

Next steps

If you are buying land in Melbourne's growth corridors, always request the GAIC Certificate before you sign. A pre-contract review from precontractreview.com will flag missing GAIC documentation and any contract clauses that shift GAIC liability to you. Then confirm with a qualified property solicitor before committing.