One Doc Home Loan for Civil Contractors: Retention Income
One Doc home loan for civil contractors with retention income — Switchboard Finance
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One Doc Home Loan for Civil Contractors: Retention Income
Civil contractors are routinely told their retention-heavy income kills a residential home loan application. On a One Doc home loan, that read changes. The file isn't asking for full PAYG payslips — it's reading BAS turnover and a self-declared income statement against a credit-scored applicant. Here's the document teardown of what actually goes into the file, and where the deal lives or dies.
Quick Answer
A One Doc home loan reads a civil contractor's income from BAS turnover plus a self-declared statement, not from full tax returns or PAYG payslips. Retention amounts held back by head contractors don't show as missing income on the document set the way they do on a full-doc file. The deal hinges on credit, deposit, BAS evidence and a clean self-declaration — not on whether retentions have been released yet.
The Misconception: "My Retentions Are Killing the Application"
Almost every civil contractor I speak with about a home loan has been told the same thing somewhere along the way. Their income looks lumpy on tax returns, head contractors hold back retention amounts that won't release until defects liability ends, and a major-bank assessor reading the file at full-doc strips that retention income out — leaving a serviceability number that doesn't match what the contractor knows they actually earn. The file gets declined, or the loan size gets cut hard, and the contractor walks away thinking the residential market isn't for them.
That read is correct on a full-doc bank application. It is the wrong read on a One Doc home loan. The product, which sits inside the broader private and non-bank lending stack, isn't asking for the same evidence pile. It's reading a different document set — and the documents that civil contractors actually have, BAS lodgements showing real turnover and a self-declaration of income, are the documents the file is built around. Retention income doesn't disappear from the picture; it's simply not the line the assessor is staring at. The rest of this post tears down exactly which documents go into the file, what each one is being read for, and where a civil contractor's One Doc application actually lives or dies.
Document Teardown: What's Actually Inside a One Doc File
A One Doc home loan file is shorter than a full-doc bank file by design. Each document below is doing specific work — there's no fat in the stack, which means each line is weighted heavily in the credit read. Here's what a civil contractor actually puts into the file and what the assessor is reading from it.
The teardown above is the whole stack on a clean civil-contractor One Doc file. Compare that to a full-doc bank application asking for two years of personal tax returns, two years of company tax returns, two years of financials, ATO portals, an accountant's letter, and recent payslips that don't exist for a self-employed contractor — and the structural reason One Doc fits a civil contractor's documentation reality starts to land.
The Sweet Spot: Where a Civil Contractor's One Doc File Sits Cleanly
One Doc is not a fix-everything product. It has a defined sweet spot. When a civil contractor's file lands inside it, the deal moves. Here's what that sweet spot actually looks like in practice.
Sweet Spot Profile
- ABN trading length comfortably past the funder's minimum — typically multiple years of continuous self-employment as a civil contractor or subcontractor
- Continuous GST registration with regular BAS lodgements showing turnover that supports the declared income on a sense-check basis
- Clean credit file — no defaults, no arrears on existing facilities, a credit score in the band the funder reads as low-risk
- LVR at or below the One Doc ceiling with deposit demonstrably from genuine savings or a documented source
- Standard residential security — metro or major regional, valued cleanly, no zoning or condition issues
- Self-declared income aligned to BAS turnover — the two numbers tell the same story when read side by side
Outside the sweet spot is where things get tricky. A contractor with a recent ABN restart, broken GST registration, recent credit defaults, or a deposit that can't be evidenced as genuine savings starts to push the file toward stalling. The fix is usually structural — wait for an additional BAS cycle, clear the credit issue, or step into a different facility while the file rebuilds. Check eligibility is the cleanest way to read where a specific civil-contractor file sits against the sweet spot, before any application gets lodged.
Entity Structure, Partner Income and the Wider Civil Finance Stack
Most civil contractors at the home-loan stage aren't trading as bare sole traders. There's usually a Pty Ltd company, often with an associated trust, and frequently a partner who works either in the business administratively or in an unrelated role. The One Doc file accommodates all of that — it doesn't require the applicant to be a sole trader, and partner income (whether self-employed or PAYG) can be brought into the application within the funder's policy. The entity wrapper itself isn't the issue; the BAS turnover is being read at the trading-entity level regardless.
Where a civil contractor's wider finance stack already includes plant facilities, working capital, or invoice finance against head-contractor progress claims, the residential One Doc file sits adjacent to that stack rather than inside it. The plant-side file is its own approval anatomy — covered in civil plant finance approval pack and civil contractor funding stack — and the residential application doesn't need to be co-signed off the back of those facilities. What it does need is for the BAS turnover to clearly evidence the trading income, and for the credit file to show the wider stack being run cleanly. A messy plant-side file showing arrears — or unresolved ATO issues like a director penalty notice sitting against the trading entity — bleeds straight into the One Doc credit read.
For civil contractors building or buying their own home through a defined trust or company arrangement, the entity structure influences how the loan is held and serviced — broker-side conversation territory, not a One Doc product limitation. Australia's National Construction Code transition is currently reshaping cost stacks across the residential-build side; the ABCB publishes the underlying NCC documents and adoption schedule — useful background where the One Doc home loan is funding a build rather than a purchase. For mixed-income tradie variants of the same product (e.g. partner on PAYG with subbie income on the contractor side), the parallel walkthrough sits in One Doc home loans for tradies with mixed income.
The misconception at the top of this post is that retention income kills the residential application. The accurate read is that retention income kills a full-doc bank application where the assessor is reading personal and company tax returns and stripping the unreleased retention out of serviceability. A One Doc home loan reads a different document set entirely, and that document set captures retention-heavy invoicing the way the contractor actually experiences it — as turnover that's been earned and invoiced, regardless of when the cash physically clears. The product isn't a workaround; it's the right product for the documentation reality of self-employed civil contractors.
A One Doc home loan is the right residential product for a civil contractor with retention-heavy invoicing because the document set the file is built on — BAS turnover plus a self-declared income statement — captures invoiced revenue regardless of whether retentions have released yet. The full-doc bank knock-back isn't the end of the conversation; it's a signal the wrong product was being applied for.
Key takeaway: On a One Doc file the assessor isn't reading personal tax returns — they're reading BAS, credit, deposit and a self-declaration. Retention income lives inside that read, not outside it.Frequently Asked Questions
Yes — a One Doc home loan reads income from BAS turnover and a self-declared statement, not from personal and company tax returns. Retention amounts invoiced through progress claims appear on BAS as G1 turnover regardless of when the retention cash physically releases, so the file doesn't strip them out the way a full-doc bank application does. The deal still has to fit the One Doc sweet spot — clean credit, sufficient deposit, LVR inside the funder's ceiling, and BAS turnover that supports the declared income on a sense check.
The standard stack is active ABN with continuous GST registration, recent BAS lodgements showing turnover, a signed self-declared income statement that aligns with the BAS, a clean credit file, evidence of deposit and genuine savings, and the property security itself. Personal and company tax returns are not the headline income evidence on a One Doc file — that's the structural difference from a full-doc bank application. Exact document requirements vary by lender and policy at the time of application. See the One Doc home loan page for the product overview.
The trading entity wrapper doesn't change the One Doc gate — sole trader, Pty Ltd, or Pty Ltd as trustee for a trust all qualify provided ABN and GST evidence is continuous. The BAS turnover is being read at the trading entity level regardless of structure. Where partner income is being brought into the application, the partner's documentation requirements depend on whether they're self-employed or PAYG and on the funder's specific policy at the time. A clean structure makes the file move faster but a more complex entity arrangement isn't a disqualifier.
One Doc LVR ceilings sit below standard full-doc residential ceilings — that's the structural risk offset for the lighter income evidence stack. The exact ceiling varies by funder, security type, location and applicant credit profile, and is set at the time of application. Civil contractors targeting a One Doc home loan should plan around a deposit that comfortably meets the lower LVR ceiling and is documented as genuine savings, rather than relying on the maximum number any individual lender quotes. Indicative ceilings are not settled fact and shift with lender policy.
The two products are reading different document sets and different income definitions. A full-doc bank assessor reads personal and company tax returns, often strips unreleased retention amounts from declared income, applies bank servicing buffers that don't match how a self-employed civil contractor's cashflow actually works, and ends up with a serviceability number that doesn't reflect what the contractor actually earns. A One Doc file reads BAS turnover (which captures invoiced retention as income at the time of invoicing), a self-declared statement, and credit conduct — closer to how a self-employed contractor's income actually behaves. The full-doc decline is a product mismatch, not a verdict on the contractor's affordability. For the parallel mixed-income walkthrough, see One Doc home loans for tradies with mixed income.
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