Construction Loan Calculator
Estimate borrowing, interest during the build, and repayments after completion.
Construction Loan Calculator
P&I Repayment After Build
$3,342
per month
Total Loan Amount
$700,000
LVR 87.5% · Deposit 12.5%
Construction Interest
$21,840
IO during build
Land & Build Costs
Loan Terms
Progress Payment Stages – IO Payments During Build
| Stage | Draw | Balance | Monthly IO | Stage Interest |
|---|---|---|---|---|
| Land Settlement | $350,000 | $350,000 | $1,167 | — |
| Foundation & Slab | +$35,000 | $385,000 | $1,283 | $3,080 |
| Frame & Roof | +$52,500 | $437,500 | $1,458 | $3,500 |
| Lock-up | +$122,500 | $560,000 | $1,867 | $4,480 |
| Fixing | +$87,500 | $647,500 | $2,158 | $5,180 |
| Practical Completion | +$52,500 | $700,000 | $2,333 | $5,600 |
| Total Construction Interest | $21,840 | |||
Stages based on standard HIA/MBA contract milestones. Each stage accrues interest for approximately 2.4 months. Actual drawdown dates depend on your builder's contract.
Full Loan Summary
- Land / block price
- $450,000
- House construction cost
- $350,000
- Less cash deposit
- -$100,000
- Total loan amount
- $700,000
- Loan-to-value ratio (LVR)
- 87.5%
- Construction interest (IO phase)
- $21,840
- Monthly P&I after completion
- $3,342
- Total P&I interest over life
- $503,087
- Grand total interest (IO + P&I)
- $524,927
Ready for the next step?
Phone us on 02 8750 9780
Our team are happy to help put you in touch with a broker local to your area.
Online enquiry
Complete our online enquiry form and we'll give you a call to connect you with one of our brokers.
Get in touch →
Ready To Find The Right Loan?
Our expert brokers are standing by to help you compare 75+ lenders and find the perfect match for your goals.
Get In Touch
Ready to take the first step? Free no-obligation mortgage assessment.
