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Structured so this purchase does not block the next one. That is the whole job.
Investment lending, and why property two is harder than property one
Every investment property you buy reduces what you can borrow for the next one, even when the property pays for itself. Lenders assess the new loan repayment at roughly three percentage points above the actual rate, then count only about 80% of the rent. That gap is deducted from your capacity each time. The first purchase is an income test. The fourth is a structuring exercise, where the order you use lenders in matters as much as the numbers.
Most of our clients own between one and five properties. The conversation is almost never about rate. It is about whether the next purchase is possible, and what has to happen now to keep the one after that open.
Shane Heness has been broking for eight years and investing in property personally since 2015, which is the reason this page reads the way it does.
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What we can help you with
Borrowing Capacity Across Lenders
Calculators differ enough to change the answer by hundreds of thousands. We compare rather than accept one number.
Portfolio Structuring
Each property on its own security, in a deliberate lender order, so one policy change cannot freeze everything.
Equity Access
Usable equity is 80% of value less the loan, not the full gap. We work out what is actually available.
Interest Only and P&I
Cash flow against servicing. Interest only helps one and can hurt the other, depending on the lender.
Cross-Collateralisation Advice
Why linking your properties feels efficient and rarely is, and how to unwind it if you already have.
Self-Employed and Trust Structures
Company, trust or sole trader. Whether a lender counts trust distributions can move capacity by six figures.
The three things that shrink your capacity each time
1. The assessment rate
Lenders do not assess your loan at the rate you will pay. They add a buffer, generally around three percentage points, to test affordability if rates rose. A loan at 6% is assessed at roughly 9%. Applied across a portfolio, that buffer compounds.
2. Rental shading
Lenders do not count all your rent either. Most apply a haircut of around 20% for vacancy, management fees, rates and maintenance. Only about 80% of the rent reaches the calculation.
3. Existing debt counted in full
Every other loan you hold is counted at its assessed repayment, including loans with other lenders. Credit card limits are counted as if fully drawn whether or not you use them, usually at around 3.8% of the limit per month.
| Item | Real life | Servicing calculator |
|---|---|---|
| Loan | $650,000 at 6.0% | $650,000 assessed at 9.0% |
| Monthly repayment counted | $3,898 (P&I) | $5,230 (P&I at assessment rate) |
| Rent | $650 per week, $2,817 per month | $2,254 per month (80% shaded) |
| Monthly position | Negative $1,081 | Negative $2,976 |
Illustrative only. Assessment rates, shading percentages and repayment calculations vary by lender and change over time.
That difference, roughly $1,900 a month in this example, is what disappears from your capacity for the next purchase. It is not an error in the calculator. It is the calculator doing its job.
What actually constrains each purchase
| Purchase | Usual binding constraint | What matters most |
|---|---|---|
| First investment | Deposit and income | Structuring it so it does not block the next one |
| Second | Servicing | Lender choice. Calculators differ enough to change the answer |
| Third | Servicing and lender policy | Lenders with better rental treatment, and no cross-collateralisation |
| Fourth and beyond | Debt to income ratio | Total debt against total income, and which lenders still have appetite |
Debt to income: the ceiling most investors hit
Debt to income, or DTI, is total debt across every lender divided by gross household income. A household earning $200,000 with $1.2 million of debt has a DTI of six. Most lenders treat six as the point where a file gets extra scrutiny, and several will not go beyond it. A handful will, at a price.
On typical Western Sydney incomes and prices, DTI is what stops the fourth purchase, not the deposit. Investors planning a portfolio who have not looked at their DTI are usually planning against the wrong constraint.
What moves it: paying down debt, increasing income including rent that is now counted after twelve months of history, closing unused credit card limits, and selling a low performing asset to recycle the debt into a better one.
Yield does more work than you think
Where you buy changes how much capacity the purchase consumes. This is the single most under-appreciated lever in portfolio building, and it is why clients who live nowhere near Campbelltown keep buying there.
| Measure | Campbelltown house | Castle Hill house |
|---|---|---|
| Purchase price | $1,017,000 | $2,560,000 |
| Loan at 80% | $813,600 | $2,048,000 |
| Weekly rent | $620 | $975 |
| Rent counted after 20% shading, monthly | $2,150 | $3,380 |
| Repayment at a 9% assessment rate, monthly | $6,546 | $16,479 |
| Monthly gap deducted from your capacity | $4,396 | $13,099 |
Illustrative only, at a 9% assessment rate on 30 year principal and interest with 20% rental shading. Median prices and rents from CoreLogic data via Your Investment Property, 12 months to June 2026 for Castle Hill and to May 2026 for Campbelltown. Not a quote.
Three Campbelltown purchases cost roughly the same borrowing capacity as one Castle Hill purchase. Whether that is the right strategy depends on your view of growth against yield, but the servicing arithmetic is not a matter of opinion.
Our Western Sydney locations pages set out median prices and gross yields across fifteen suburbs, with the sample size behind each figure.
Equity: what you have versus what you can use
Most investors overestimate their usable equity, because they count the gap between what they owe and what the property is worth. Lenders do not calculate it that way.
Usable equity is generally 80% of the current valuation less the existing loan balance. The 20% buffer is not available, because releasing it would take the loan above 80% and trigger lender mortgage insurance on the release.
| Property | Current value | Loan balance | 80% of value | Usable equity |
|---|---|---|---|---|
| Home | $1,150,000 | $540,000 | $920,000 | $380,000 |
| Investment 1 | $720,000 | $560,000 | $576,000 | $16,000 |
| Investment 2 | $680,000 | $610,000 | $544,000 | Nil |
| Total | $2,550,000 | $1,710,000 | $396,000 |
Illustrative only. Valuations are lender ordered and frequently come in below owner expectations.
That portfolio shows $840,000 of raw equity and $396,000 of usable equity, almost all of it in one property. That is normal. Note also that having usable equity is not the same as being able to borrow against it. Equity gives you the deposit. Servicing decides whether you get the loan.
Structuring mistakes that cost you the next purchase
Cross-collateralisation
Where one lender holds two or more of your properties as security for the same loans. It feels efficient and it is not. It ties your properties together, makes selling one complicated, and hands a single lender control over your whole position. Keep each property standing on its own security wherever possible.
Redraw instead of offset
Paying extra into an investment loan and redrawing it later can change the tax deductibility of that portion. An offset account achieves the same cash flow result without touching the loan balance. That is a conversation for your accountant, but the loan has to be set up to allow it.
Taking the whole equity release at once
Releasing equity in one large lump and parking it can hurt servicing, because the full loan is counted whether or not the funds are deployed. Releasing in line with what you are about to buy usually tests better.
Spending your best lender first
Use the most generous lender on a purchase any lender would have approved and you have wasted it. Use them last, when the file is hardest, and they are there when you need them. This is the part of the job that is invisible at the time and decisive three years later.
How an investment purchase runs
Realistic durations. An investment purchase runs four to six weeks from application to settlement where the file is clean, longer where a portfolio has to be untangled first.
- 1Day 1, 45 to 60 minutes
Portfolio review
Everything you own, everything you owe, and what you are trying to do over the next three to five years. We calculate your current debt to income ratio on this call.
- 2Days 2 to 5
Capacity comparison across lenders
We run your position through several lender calculators, not one. On a portfolio file the spread between the most and least generous is routinely $300,000 or more.
- 3Days 3 to 7
Written loan strategy
A document setting out the options, the numbers, the recommended lender for this purchase and the lender we are holding back for the next one, with reasons.
- 4Week 1 to 2
Equity release or pre-approval
Where equity is funding the deposit, that release runs first. Pre-approval follows so you can bid with confidence.
- 5Week 2 to 3
Application and submission
Full submission with a written credit summary explaining the portfolio position. Portfolio files are read by senior assessors and presentation matters.
- 6Week 3 to 4
Valuation and approval
We chase the valuation, handle the assessor questions and check the approval conditions before you rely on them.
- 7Week 4 to 6
Loan documents and settlement
We check the documents against what was approved, coordinate with your solicitor and confirm the structure is what we designed rather than what the lender defaulted to.
- 8Every 12 months
Annual review
Rate review against the market, updated capacity, updated DTI, and a check on whether any property has grown enough to release equity for the next purchase.
Common questions about investment loans
Answers to the questions we are asked most often. If yours is not here, ask us directly.
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