How does the property equity estimator work?
The calculation is deliberately simple so you can check it by hand:
- Maximum total lending = property value × the LVR you choose.
- Estimated usable equity = maximum total lending − what's already owed.
- Total equity = property value − what's already owed.
- Current LVR = what's owed ÷ property value.
The gap between total equity and usable equity is the buffer a lender keeps between the loan and the property's value. That buffer protects both of you if values fall or the property has to be sold.
What is LVR, in one sentence?
Loan-to-value ratio is the total lending secured on a property divided by its value, shown as a percentage — $450,000 owed on a $900,000 property is a 50% LVR. For a deeper explanation, including how the Reserve Bank's bank rules differ from business lending, read LVR explained for business owners.
Worked example
A Hamilton electrician owns a home worth $850,000 with $420,000 left on the bank mortgage. At an illustrative 65% LVR:
| Step | Figure |
|---|---|
| Maximum total lending (65% of $850,000) | $552,500 |
| Less existing mortgage | −$420,000 |
| Estimated usable equity | $132,500 |
| Total equity | $430,000 |
That doesn't mean a lender will offer $132,500 — it means the numbers are in a range worth a conversation. A second-mortgage business loan could sit behind the existing bank mortgage without disturbing it. See borrowing against property with an existing mortgage.
What moves the real number?
- Property type. Standard homes in main centres are generally easier to lend against than rural land, lifestyle blocks or specialised commercial buildings.
- Location. Lenders consider how easily the property would sell — a townhouse in Riccarton is different from a bach at the end of a gravel road.
- Mortgage position. First-mortgage lending typically allows a higher LVR than second-mortgage lending.
- Valuation. Your estimate of value and a registered valuer's can differ. Our guide to property valuations explains how lenders confirm value.
- The loan purpose and exit. A clear plan to repay always strengthens a case.
Using the estimate
If your usable equity is above $20,000 at a conservative LVR, a property-secured business loan is worth exploring. No financials or tax returns are needed for the initial assessment, bad credit and arrears are considered case by case, and some loans fund within 24 hours of approval. If the figure is small or negative, an unsecured business loan based on turnover may suit better — the which loan fits picker compares routes.
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