One key part of a duplex investment that can quietly make or break your return is the pre-construction phase.
It is not the glamorous part of the development, but it is where a significant amount of your risk and ROI can be decided.
Pre-construction includes everything that happens before breaking ground:
- Sourcing and assessing the land
- Finalising the design and estimate
- Locking in the fixed price
- Completing site due diligence and reports
- Securing planning approval
The speed and certainty of this stage can have a direct impact on how quickly your investment starts working for you.
Why RPG’s pre-construction process takes around 60 days
RPG’s pre-construction process runs in approximately 60 days, compared with six months or more through many standard builder processes.
A key part of this is the CDC pathway.
A Complying Development Certificate, or CDC, is a streamlined state-government approval pathway for compliant designs that avoids the slower council DA process.
RPG generally splits pre-construction into approximately:
- 30 days of pre-planning
- 30 days of CDC approval
And currently, the process is running around 10 days ahead of that timeframe.

Protecting your finance pre-approval
The speed of pre-construction can also help protect your borrowing position.
A finance pre-approval generally lasts around 90 days.
Because RPG’s pre-construction process fits within that window, investors can reduce the risk of needing to return to the bank and reapply.
That matters because circumstances can change.
A rate rise, job change or new debt could affect borrowing capacity while an investor is waiting for planning to be completed.
Keeping the project moving helps reduce that exposure.
Reducing holding costs before construction
The second major benefit is lower holding costs.
If an investor purchases a block and then waits six to twelve months for a DA, they may be paying interest on the land, often a couple of thousand dollars per month, plus rates, before the investment has earned anything.
Because RPG can move into construction roughly 10 months earlier than an average builder process, those additional holding costs can be significantly reduced.
Bringing rental income forward
Add those time savings together and the financial difference becomes significant.
The RPG process can potentially bring rental income forward by around 12 months.
Using a rough average rent of approximately $1,200 per week, that represents around:
$60,000 in rental income over 12 months
That is income an investor may otherwise have missed while the project remained in pre-construction.
It also means the investment can become cashflow positive sooner rather than continuing to drain reserves.

Getting your capital working sooner
For investors building a portfolio, earning sooner can also make the next investment more achievable.
When rental income starts earlier and financial risk is reduced, it becomes easier to keep capital moving rather than having it tied up in one project for longer than necessary.
That is what RPG’s pre-construction process is designed to achieve.
For an investor, speed is not simply about getting through planning faster.
It is about protecting finance, reducing holding costs and getting the investment producing income sooner.