Concrete vs polypropylene soakwells
Read the guide on how material choice fits into the wider site decision.
Read the guideSoakwell advice
How Many Soakwells Do I Need in Perth?
The honest answer is that it depends on the property. Roof area, runoff, soil conditions, available space and existing drainage all affect how many soakwells may be needed.
There is no universal number that suits every home
For Perth homes, soakwells are commonly used to manage roof runoff and stormwater, but the right quantity depends on the actual site rather than a generic rule of thumb. A small simple roof area may need a very different layout from a large renovation, extension, patio or new build.
That is why online one-number answers are often misleading.
What affects soakwell requirements?
- Total roof area draining into the system
- Number and location of downpipes
- Soil conditions and drainage capacity
- Available installation space
- Access for excavation
- Whether paving or landscaping needs to be disturbed
- Existing soakwells, pits and pipework
Renovations and added roof area often change the answer
If you are extending or renovating, the original stormwater system may no longer suit the new roof area or changed ground levels. Extra capacity may be needed to reduce overflow and pooling issues, and sometimes the layout matters as much as the quantity.
The same applies when patios, driveways or other hard surfaces change how the site handles runoff.
Quote support
What helps estimate the likely setup
The strongest starting point is your suburb, site photos, any plans, a short description of the job and whether the property has existing drainage or overflow problems already. That gives much better context than asking for a number in isolation.
Helpful details
- New install, upgrade, replacement or overflow issue
- Photos of downpipes, paving and affected areas
- Plans if roof area or patio layout is changing
- Any known existing soakwells or drainage points
- Access limits for excavation
Common questions
FAQs about soakwell quantity in Perth
Can anyone answer the number of soakwells without seeing the site?
Usually not accurately. Roof area, runoff, downpipe locations, soil conditions, available space, access and the existing stormwater layout all affect what is practical for a specific property.
Why do renovations often change the soakwell requirement?
Renovations, extensions, patios and new paving can increase runoff and change how water moves around the property. That can mean the original stormwater system no longer provides enough capacity or the right layout.
What helps the first review?
Send your suburb, photos, plans if available, roof or patio changes, and a short description of whether the job is a new install, upgrade, replacement or overflow problem.
Soakwell installation Perth
See the main residential installation page covering upgrades, replacements and new work.
View soakwell installationNeed soakwells installed in Perth?
Send your suburb, photos, plans if available and a short description of the job so Rogue Storm can review what may be suitable for the site.
Photo-first enquiries usually help Roy assess scope faster around onsite work.