Continuing on with questions I get asked a lot is this one: "How long should we put for the due diligence clause in the offer?"
Great question! But it's the wrong place to start. The length of your due diligence period isn't something you pull out of thin air. Nor is there a magic number that works for every property. The right timeframe depends entirely on what you actually need to investigate.
More importantly, understanding WHY you're using a due diligence clause is far more valuable than deciding how long it needs to be.
Let's unpack what due diligence really is and why using it wisely could save you hundreds of thousands of dollars.
Due Diligence Isn't Just a Clause - It's a Process
Many buyers think a due diligence clause simply gives them an opportunity to "have a look around" after signing a contract. BZZZZZZ Wrong answer!
In reality, it's much more strategic than that.
Before making an offer, you've already completed a preliminary feasibility assessment. You've looked at zoning, estimated construction costs, researched comparable sales and made assumptions about the project's viability. The due diligence period is where those assumptions get tested.
This is your opportunity to engage the professionals who can either confirm your thinking or uncover problems you never knew existed.
That might include:
Each expert examines the property from their own area of expertise, helping you determine whether the project is still financially worthwhile or whether you've just avoided a very expensive mistake.
It's About Opportunities as Much as Risks
People often assume due diligence is simply about finding defects or reasons not to proceed. That's only half the story.
Good due diligence identifies both risks and opportunities. Perhaps the survey reveals an easement that limits development, or the engineer discovers significant retaining walls will be required. On the other hand, the town planner may identify an overlooked planning opportunity that allows additional yield, or your consultant may suggest a more profitable development outcome than you originally envisaged.
The objective isn't to prove yourself right or wrong. It's to understand the true potential of the site before your purchase becomes unconditional. Spending a few thousand dollars on expert advice during this stage is far preferable to discovering a six-figure problem after settlement.
The Ultimate Escape Hatch
One of the biggest advantages of a properly drafted due diligence clause is the flexibility it provides.
If your investigations reveal that the project no longer stacks up, you generally have the ability to terminate the contract without having to justify your decision.
You don't need to explain every engineering report.
You don't need to provide pages of consultant advice.
You simply determine that your due diligence has not been satisfactory.
For developers, that's an incredibly powerful form of protection. Property development is built on assumptions, and even experienced investors can't identify every issue from a desktop feasibility assessment. Due diligence gives you the opportunity to verify those assumptions before you're committed to spending hundreds of thousands or even millions of dollars.
Vendors Aren't So Keen
While buyers often see due diligence as common sense, vendors tend to see something very different — they see uncertainty. Until your due diligence period expires, they don't know whether the sale will actually proceed. They may already have another purchase lined up, need the proceeds to fund another project or simply want certainty after having their property on the market for weeks or months. Every condition in your contract represents another opportunity for the transaction to fall over.
That's why a due diligence clause can make your offer less attractive, even if your purchase price is competitive. Imagine a vendor receives two offers. One is slightly higher but includes a lengthy due diligence clause, while the other is unconditional.
Which one feels safer? In many cases, the unconditional offer wins. Even if another buyer also has conditions, a shorter and more reasonable due diligence period can still make their offer appear stronger than yours.
That's why developers need to balance protecting themselves with remaining competitive. Every additional condition is a trade-off. The more protection you ask for, the more risk there is that someone else secures the property instead.
Ask for the Time You Actually Need
One of the biggest mistakes inexperienced buyers make is requesting lengthy due diligence periods "just in case." If you genuinely require six or eight weeks because specialist reports are needed, then ask for it.
But don't request two months when your investigations can realistically be completed within five business days.
Longer isn't better (no sniggers, thank you very much). It's simply more uncertainty for the vendor.
A well-planned due diligence process should begin before the contract is signed wherever possible. Know which consultants you'll need, have them lined up, and book inspections immediately after contracts are exchanged. The more organised you are, the shorter your required timeframe becomes.
It's also worth remembering that the appropriate due diligence period varies enormously depending on the complexity of the project.
The complexity of the project should determine the length of the clause, not guesswork or "just in case" thinking.
Align Your Contract Conditions
One simple strategy that's often overlooked is aligning your due diligence period with your other contractual conditions. For example, if you also have a finance clause, it often makes sense for both conditions to become unconditional on the same day.
Rather than having finance approved one week and due diligence completed two weeks later, synchronising the dates creates a cleaner contract administration process.
It also provides certainty for everyone involved. When that date arrives, the transaction either proceeds unconditionally or it doesn't. Keeping those milestones aligned reduces confusion and makes managing the transaction considerably easier.
Due Diligence Is a Tool, Not a Crutch
The best developers don't rely on due diligence because they're unsure of themselves. They rely on it because they understand that no amount of desktop research can replace professional advice from experienced consultants. Due diligence isn't about replacing good research, it's about verifying it.
Use it thoughtfully. Ask only for the time you genuinely need. Respect the vendor's desire for certainty and remember that every additional condition makes your offer slightly less attractive.
Like every tool in property development, a due diligence clause is incredibly powerful when used correctly, but it can become a liability when overused. The smartest investors know the difference.
Great question! But it's the wrong place to start. The length of your due diligence period isn't something you pull out of thin air. Nor is there a magic number that works for every property. The right timeframe depends entirely on what you actually need to investigate.
More importantly, understanding WHY you're using a due diligence clause is far more valuable than deciding how long it needs to be.
Let's unpack what due diligence really is and why using it wisely could save you hundreds of thousands of dollars.
Due Diligence Isn't Just a Clause - It's a Process
Many buyers think a due diligence clause simply gives them an opportunity to "have a look around" after signing a contract. BZZZZZZ Wrong answer!
In reality, it's much more strategic than that.
Before making an offer, you've already completed a preliminary feasibility assessment. You've looked at zoning, estimated construction costs, researched comparable sales and made assumptions about the project's viability. The due diligence period is where those assumptions get tested.
This is your opportunity to engage the professionals who can either confirm your thinking or uncover problems you never knew existed.
That might include:
- Town planners
- Surveyors
- Engineers
- Building inspectors
- Geotechnical consultants
- Environmental specialists
- Conveyancers or solicitors
- Traffic engineers
- Civil designers
Each expert examines the property from their own area of expertise, helping you determine whether the project is still financially worthwhile or whether you've just avoided a very expensive mistake.
It's About Opportunities as Much as Risks
People often assume due diligence is simply about finding defects or reasons not to proceed. That's only half the story.
Good due diligence identifies both risks and opportunities. Perhaps the survey reveals an easement that limits development, or the engineer discovers significant retaining walls will be required. On the other hand, the town planner may identify an overlooked planning opportunity that allows additional yield, or your consultant may suggest a more profitable development outcome than you originally envisaged.
The objective isn't to prove yourself right or wrong. It's to understand the true potential of the site before your purchase becomes unconditional. Spending a few thousand dollars on expert advice during this stage is far preferable to discovering a six-figure problem after settlement.
The Ultimate Escape Hatch
One of the biggest advantages of a properly drafted due diligence clause is the flexibility it provides.
If your investigations reveal that the project no longer stacks up, you generally have the ability to terminate the contract without having to justify your decision.
You don't need to explain every engineering report.
You don't need to provide pages of consultant advice.
You simply determine that your due diligence has not been satisfactory.
For developers, that's an incredibly powerful form of protection. Property development is built on assumptions, and even experienced investors can't identify every issue from a desktop feasibility assessment. Due diligence gives you the opportunity to verify those assumptions before you're committed to spending hundreds of thousands or even millions of dollars.
Vendors Aren't So Keen
While buyers often see due diligence as common sense, vendors tend to see something very different — they see uncertainty. Until your due diligence period expires, they don't know whether the sale will actually proceed. They may already have another purchase lined up, need the proceeds to fund another project or simply want certainty after having their property on the market for weeks or months. Every condition in your contract represents another opportunity for the transaction to fall over.
That's why a due diligence clause can make your offer less attractive, even if your purchase price is competitive. Imagine a vendor receives two offers. One is slightly higher but includes a lengthy due diligence clause, while the other is unconditional.
Which one feels safer? In many cases, the unconditional offer wins. Even if another buyer also has conditions, a shorter and more reasonable due diligence period can still make their offer appear stronger than yours.
That's why developers need to balance protecting themselves with remaining competitive. Every additional condition is a trade-off. The more protection you ask for, the more risk there is that someone else secures the property instead.
Ask for the Time You Actually Need
One of the biggest mistakes inexperienced buyers make is requesting lengthy due diligence periods "just in case." If you genuinely require six or eight weeks because specialist reports are needed, then ask for it.
But don't request two months when your investigations can realistically be completed within five business days.
Longer isn't better (no sniggers, thank you very much). It's simply more uncertainty for the vendor.
A well-planned due diligence process should begin before the contract is signed wherever possible. Know which consultants you'll need, have them lined up, and book inspections immediately after contracts are exchanged. The more organised you are, the shorter your required timeframe becomes.
It's also worth remembering that the appropriate due diligence period varies enormously depending on the complexity of the project.
- A straightforward cosmetic renovation might only require a building inspection and a title review.
- A townhouse development may require planning advice, surveying, engineering input, service authority investigations and more.
- A rooming house conversion could involve building code assessments, planning advice, fire engineering and operational feasibility.
The complexity of the project should determine the length of the clause, not guesswork or "just in case" thinking.
Align Your Contract Conditions
One simple strategy that's often overlooked is aligning your due diligence period with your other contractual conditions. For example, if you also have a finance clause, it often makes sense for both conditions to become unconditional on the same day.
Rather than having finance approved one week and due diligence completed two weeks later, synchronising the dates creates a cleaner contract administration process.
It also provides certainty for everyone involved. When that date arrives, the transaction either proceeds unconditionally or it doesn't. Keeping those milestones aligned reduces confusion and makes managing the transaction considerably easier.
Due Diligence Is a Tool, Not a Crutch
The best developers don't rely on due diligence because they're unsure of themselves. They rely on it because they understand that no amount of desktop research can replace professional advice from experienced consultants. Due diligence isn't about replacing good research, it's about verifying it.
Use it thoughtfully. Ask only for the time you genuinely need. Respect the vendor's desire for certainty and remember that every additional condition makes your offer slightly less attractive.
Like every tool in property development, a due diligence clause is incredibly powerful when used correctly, but it can become a liability when overused. The smartest investors know the difference.
