Quick answer: SA stamp duty on a $500,000 property is approximately $21,330. First home buyers building new pay zero stamp duty with no property value cap (from June 2024). However, SA offers zero relief for established homes — the only state with this policy. Building instead of buying saves $15,000–$30,000+ because you only pay duty on the land. Combined with the $15,000 FHOG, first home buyers building new save $36,000–$48,000+ total. Updated April 2026 based on RevenueSA data.
“South Australia’s stamp duty policy is the most polarised in Australia — best in the country for new builds, worst for established homes. If you’re a first home buyer in SA, building new isn’t just a preference, it’s a financial necessity.” — Emma Whitfield, Property Finance Analyst at BuildBudget
South Australia has the most extreme policy in Australia: best stamp duty relief for new homes, worst for established. If you’re a first home buyer building new, you pay zero stamp duty regardless of value. If you’re buying an established $500,000 home, you pay the full ~$21,500. Every other state offers at least some FHB relief on established properties. SA does not.
What Are the South Australia Stamp Duty Rates?
Standard Rates (Not First Home Buyer)
| Property Value | Stamp Duty | Effective Rate |
|---|---|---|
| $0 – $12,000 | $1 per $100 | 1.0% |
| $12,001 – $30,000 | $120 + $2 per $100 over $12,000 | ~1.5% |
| $30,001 – $50,000 | $480 + $3 per $100 over $30,000 | ~2.0% |
| $50,001 – $100,000 | $1,080 + $3.50 per $100 over $50,000 | ~2.5% |
| $100,001 – $200,000 | $2,830 + $4.00 per $100 over $100,000 | ~3.0% |
| $200,001 – $250,000 | $6,830 + $4.25 per $100 over $200,000 | ~3.5% |
| $250,001 – $300,000 | $8,955 + $4.75 per $100 over $250,000 | ~4.0% |
| $300,001 – $500,000 | $11,330 + $5.00 per $100 over $300,000 | ~4.5% |
| $500,001+ | $21,330 + $5.50 per $100 over $500,000 | ~5.0%+ |
Examples:
- $400,000 property: $16,330
- $500,000 property: $21,330
- $700,000 property: $32,330
(source: RevenueSA via Johnston Withers)
Who Qualifies for First Home Buyer Stamp Duty Relief?
For New Homes (New Build, Off-the-Plan, Substantially Renovated):
| Property Value | Stamp Duty | Notes |
|---|---|---|
| $0 – No cap | $0 (full exemption) | Effective from June 6, 2024 |
For Established Homes:
| Property Value | Stamp Duty | Notes |
|---|---|---|
| All values | Standard rate applies | NO relief (unique to SA) |
Potential Savings:
- Up to $21,330 saved on a $500,000 new home (full exemption)
- Up to $32,330 saved on a $700,000 new home (full exemption)
- $0 saved on any established home (no relief)
South Australia is the only state where first home buyers pay full stamp duty on established homes (source: Money.com.au). If you’re set on buying established in SA, you’ll pay more than you would in any other state.
How Much Do You Save By Building Instead of Buying?
This is where building pulls ahead in SA. Look at the actual numbers:
Example 1: Elizabeth (Northern Adelaide)
| Buying Established | Building New | |
|---|---|---|
| Total value | $550,000 | $550,000 |
| What stamp duty is calculated on | $550,000 (full price) | $200,000 (land only) |
| Stamp duty payable (not FHB) | $23,830 | $6,830 |
| You save | — | $17,000 |
Example 2: First Home Buyer in Mount Barker
| Buying Established $650K | Building (Land $280K + Build $370K) | |
|---|---|---|
| Stamp duty on | $650,000 | $280,000 |
| First home buyer concession? | NO (full rate: ~$25,580) | YES ($0—full exemption) |
| FHOG eligible? | Yes ($15,000) | Yes ($15,000) |
| Total difference | ~$25,580 stamp duty | $0 stamp duty + $15,000 FHOG |
| Net advantage of building | — | $40,580 |
This is the starkest difference in Australia. SA first home buyers building new pay zero stamp duty and get $15,000 FHOG (RevenueSA). SA first home buyers buying established pay full stamp duty (~$25,580 on a $650K property) but still get the $15,000 FHOG. The building advantage is $25,580 in stamp duty alone. You may also qualify for the $15,000 First Home Owner Grant in SA.
“The $40,580 difference between building and buying established in Mount Barker is one of the largest gaps in Australia. That’s almost the cost of a full landscaping package and driveway. The policy is clearly designed to push first home buyers toward new construction.” — James Thornton, Construction Cost Analyst at BuildBudget
Example 3: Upgrader in Norwood (Not First Home Buyer)
| Buying Established $750K | Building (Land $400K + Build $350K) | |
|---|---|---|
| Stamp duty on | $750,000 | $400,000 |
| Stamp duty payable | $35,080 | $16,330 |
| You save | — | $18,750 |
See your SA stamp duty savings
Our calculator shows the full picture — build cost, stamp duty on land only, and FHOG if eligible.
How It Works
Not complicated, but you need to get the paperwork right.
- Buy the land first — you pay stamp duty on the land value only
- Sign a building contract separately — the building contract is NOT subject to stamp duty
- Important: The land and build must be separate contracts. If you buy a “house and land package” as a single contract, stamp duty may apply to the full amount
The Two-Contract Rule
For the saving to work:
- You need one contract for the land purchase
- You need a separate building contract with your builder
- The land settlement has to happen before construction starts (or at least, land and build are contracted separately)
- If a developer is selling you the land and building the home as a bundled deal in one contract, RevenueSA can treat it as a single purchase — and you’ll pay duty on the lot
Talk to your conveyancer if you’re unsure whether your contracts are properly separated.
How Much Stamp Duty Will You Pay in SA?
| Property/Land Value | Stamp Duty (Standard) | Stamp Duty (First Home Buyer) |
|---|---|---|
| $200,000 | $6,830 | Established: $6,830 / New: $0 |
| $250,000 | $8,955 | Established: $8,955 / New: $0 |
| $300,000 | $11,330 | Established: $11,330 / New: $0 |
| $350,000 | $13,830 | Established: $13,830 / New: $0 |
| $400,000 | $16,330 | Established: $16,330 / New: $0 |
| $450,000 | $18,830 | Established: $18,830 / New: $0 |
| $500,000 | $21,330 | Established: $21,330 / New: $0 |
| $550,000 | $23,830 | Established: $23,830 / New: $0 |
| $600,000 | $26,330 | Established: $26,330 / New: $0 |
| $650,000 | $28,830 | Established: $28,830 / New: $0 |
| $700,000 | $31,330 | Established: $31,330 / New: $0 |
| $750,000 | $33,830 | Established: $33,830 / New: $0 |
Note: First home buyers get full exemption for new homes regardless of value. Zero relief for established homes.
Building saves stamp duty in SA
Separate land and build contracts = duty on land only
Do Foreign Buyers Pay More Stamp Duty in SA?
South Australia charges a 7% additional stamp duty on residential property purchases by foreign buyers (source: Stamp Duty Calcs). This is the lowest foreign surcharge in Australia (equal with WA).
NSW, VIC, and QLD charge 8%. SA and WA charge 7%.
Important: The first home buyer stamp duty exemption does not reduce the foreign surcharge. The 7% is calculated independently on the full property value. If you’re a foreign buyer purchasing a new home, you still pay 7% even though the FHB exemption applies to the standard stamp duty.
Example: Foreign first home buyer purchasing a new $600,000 home in Adelaide:
- Standard stamp duty: $0 (FHB exemption)
- Foreign surcharge: $42,000 (7% of $600,000)
- Total payable: $42,000
When Is Stamp Duty Due in South Australia?
Stamp duty is due within 2 months of the transaction date (usually settlement for land purchases, or contract date for off-the-plan). In practice, your conveyancer handles it as part of the settlement process.
Frequently Asked Questions
Do I pay stamp duty on the construction cost?
No. As long as you have separate contracts for the land purchase and the build, the building contract isn’t dutiable. That’s the whole reason building saves you so much upfront in SA.
Can I get both the stamp duty exemption and the FHOG?
Yes, and this is where first home buyers really come out ahead. You can stack both:
- Stamp duty exemption (new home, no value cap)
- First Home Owner Grant ($15,000)
They’re separate schemes with separate eligibility. Claiming one doesn’t affect the other.
Why doesn’t SA offer stamp duty relief for established homes?
Policy decision. South Australia wants to stimulate new home construction, not just churn in the existing housing stock. The government removed the FHOG value cap and made stamp duty exemption unlimited for new homes, while offering zero relief for established properties.
The trade-off is clear: SA first home buyers building new get the best incentives in Australia. SA first home buyers buying established pay more in stamp duty than they would in any other state.
When does the first home buyer exemption apply?
The exemption applies to:
- New builds (you’re building the home)
- Off-the-plan purchases (buying before construction completes)
- Substantially renovated homes (full gut-reno, never occupied post-renovation)
- Vacant land (if you’re building on it)
The exemption does NOT apply to:
- Established/existing homes (you pay full stamp duty)
- Investment properties
- Second homes
Can I claim the exemption if I buy land and build later?
Yes, but you pay stamp duty on the land when you buy it. The exemption applies to the combined value of land + new home when you’re building. In practice:
- You pay stamp duty on the land at purchase (no exemption for vacant land alone)
- When the new home is complete, you can apply for a refund or credit if your total land+home value qualifies for FHB exemption
Most first home buyers structure it as: buy land (pay duty), sign building contract (no duty on build), move in, claim FHOG. Talk to your conveyancer about the optimal structure.
How does SA compare to other states?
Stamp duty exemption for first home buyers:
- SA: Full exemption for new homes (no cap), zero relief for established
- NSW: Exemption up to $800,000 (new or established)
- VIC: Exemption up to $600,000 (new or established)
- QLD: Exemption up to $500,000 (new or established)
- WA: Exemption up to $500,000 (new or established)
SA is the only state with zero relief for established homes. But for new builds, SA has no cap—making it the most generous for buyers building high-value homes (RevenueSA).
“Adelaide’s building costs are still 15–20% lower than Melbourne or Sydney, and you get the uncapped stamp duty exemption on top. For first home buyers willing to build, SA arguably offers the best value proposition of any mainland capital right now.” — David Park, Housing Market Researcher at BuildBudget
See our Adelaide building costs guide for what you’ll spend on the build itself. Compare the total cost in our build vs buy analysis. For financing options, learn about construction loans vs home loans. Estimate your total build cost with our free calculator.
Rates current as of April 2026, based on RevenueSA, Johnston Withers, and Stamp Duty Calcs data. Your situation will have details we can’t cover here — talk to a conveyancer or solicitor before making decisions based on these numbers.
Key Takeaways
- SA offers full stamp duty exemption for first home buyers building new homes with no property value cap (from June 6, 2024)
- SA provides zero relief for first home buyers buying established homes — only state with this policy
- Building saves $15,000-$30,000+ in stamp duty compared to buying established — you only pay duty on land, not construction cost
- First home buyers building $650K home save $40,580 total ($25,580 stamp duty + $15,000 FHOG advantage)
- Foreign buyers pay additional 7% surcharge (lowest in Australia with WA)
- Stamp duty due within 2 months of transaction date
- Combined with $15K FHOG, SA first home buyers building new get best incentives in Australia for high-value builds
Data Sources
All information sourced from official government agencies and verified sources:
- RevenueSA — Stamp Duty Information, accessed April 2026
- Johnston Withers — Stamp Duty on Property in SA, accessed April 2026
- Stamp Duty Calcs — South Australia Stamp Duty Calculator, accessed 2025-26
- Money.com.au — First Home Buyer Grant South Australia, published 2026
