Professional local feasibility model
Use the requested land, lending, interest, sales, GST and company-tax sequence. Every assumption is editable, every result is traceable, and uncertain tax treatment stays visible.
Completeness reflects whether key evidence fields are populated; it does not certify accuracy or feasibility.
Missing or weak inputs
Scenario mode
Decision maturity
Decision this model supports
What price and conditions could support an offer?
Evidence expected at this level
Current title, planning screen, market evidence, high-level civil and funding allowances.
Last assumption change: Not recorded
Expected case
Detailed results stay in the normal page flow. Each line updates after an edited numeric field is committed with Enter, Tab or blur.
1. Cost excluding interest (FC)
$6,550,000
2. Land lending
$1,380,000
3. Land interest
$34,500
4. Main project facility
$5,630,000
5. Main project interest
$548,925
6. Total interest
$583,425
7. Total cost including interest (TC)
$7,133,425
8. Gross sales
$7,000,000
9. Agent fee
$175,000
10. Net sales before GST
$6,755,000
11. Gross profit before GST
-$378,425
12. GST claim
$854,348
13. GST payable on sales
$913,043
14. Net GST payable
$58,696
15. Profit before company tax
-$437,121
16. Company tax
$0
17. Final net profit / loss
Final estimate — verify all inputs and treatment.
-$437,121
Final Net Profit = [(Gross Sales - Agent Fee - Marketing - Land - Civil - Construction - Land Interest - Project Interest) - (Output GST - GST Claim)] - Company Tax
Main reason
Total cost, interest and net GST exceed net sales on the selected assumptions.
Biggest current risk
Sale-price confidence
Next step
Verify the largest uncertain cost and sales assumptions with the QS, valuer, lender, accountant and project consultants.
Best and worst cases apply visible percentage stresses to sales, land, civil, construction, interest, programme and selling costs. They are not forecasts.
Sales 5% · construction -5% · programme -8%
Sales 0% · construction 0% · programme 0%
Sales -8% · construction 12% · programme 20%
Decision fragility
These are transparent sensitivity checks against the current target margin. They are not predictions or a buy/decline recommendation. Verify every cited assumption before making a decision.
Supporting assumption: Construction $3,400,000 · Example - unverified confidence
Source: Worked example allowance — replace with QS, tender or contract evidence
Supporting assumption: Modelled gross sales $7,000,000 · Example - unverified confidence
Source: Worked example sales assumption — replace with current valuation and comparable evidence
Supporting assumption: 18 months at 6.5% · Example - unverified confidence
Source: Worked example lending assumption — replace with current lender terms
Supporting assumption: 8 dwellings currently modelled
Source: Worked example sales assumption — replace with current valuation and comparable evidence
Relative share of the selected scenario’s core cost and interest components.
A labelled bridge from gross sales to the final result; positive and negative values are never shown by colour alone.
FC = Land + Civil / services / approvals + Construction
Land lending = Land × land lending %
Land interest = land lending × annual rate × months ÷ 12
Main facility = land lending + Civil + Construction
Project interest = main facility × annual rate × months ÷ 12
Gross sales = Σ(home count × sale price)
Agent fee = Gross sales × agent fee %
Net sales = Gross sales - Agent fee - Marketing
GST claim = eligible GST-inclusive costs × editable GST fraction
Sales GST = Gross sales × editable GST fraction
Net GST = Sales GST - GST claim
Final result = profit before tax - company tax
Expected outputs: FC $6,550,000; land lending $1,380,000; land interest $34,500; main facility $5,630,000; project interest $548,925; TC $7,133,425; gross sales $7,000,000; GST claim about $854,348; GST payable about $913,043.
Final result: -$437,121 loss
This is an example using the user's development calculation structure. GST and tax treatment must be confirmed by an accountant or tax adviser before relying on the result.
