Estimate granny flat costs, rental return, yield, cash flow and payback period.
Granny Flat Feasibility Estimate
Enter your figures to assess feasibility.
Total Project Cost$0
Net Annual Cash Flow$0
Net Yield on Cost0%
Payback Period0 years
| Feasibility Item |
Annual / Total Amount |
| Current Property Value | $0 |
| Estimated Value After Granny Flat | $0 |
| Estimated Value Uplift | $0 |
| Total Project Cost | $0 |
| Gross Granny Flat Rent | $0 |
| Vacancy Allowance | $0 |
| Adjusted Rental Income | $0 |
| Property Management Fee | $0 |
| Interest Cost | $0 |
| Additional Insurance | $0 |
| Additional Maintenance | $0 |
| Total Annual Costs | $0 |
| Net Annual Cash Flow | $0 |
| Monthly Cash Flow | $0 |
| Gross Yield on Cost | 0% |
| Net Yield on Cost | 0% |
| Payback Period | 0 years |
This calculator provides an estimate only. Granny flat feasibility depends on council rules, zoning, minimum lot size, approvals, build costs, access, services, private open space, rental demand, finance, tax, insurance and property-specific constraints. Confirm feasibility with council, a town planner, builder, certifier, property manager, accountant and finance professional before proceeding.
