Stormwater Drainage for Perth Renovations & Extensions

Stormwater is easy to forget during a renovation because it sits behind the more visible work: roofing, paving, patios, landscaping and building changes. But once the first heavy rain arrives, poor drainage can quickly show up as pooling water, overflowing soakwells, damp paved areas or runoff heading toward the house.

Why extensions often need drainage upgrades

Home extensions usually add roof area. More roof area means more water needs to be captured and moved somewhere suitable. If the original property had small or ageing soakwells, they may not have enough capacity for the changed layout.

• New roof sections create extra runoff
• Downpipes may move or need reconnecting
• New patios and paving reduce natural soak-in
• Changed levels can send water toward doors, garages or neighbouring boundaries
• Old soakwells may be undersized, blocked or poorly located

What a practical upgrade may include

The right solution depends on access, soil conditions, available space, downpipes, existing drainage and what stage the renovation is at. A typical scope may include new pipework, polypropylene or concrete soakwells, grated drains, downpipe connections, excess soil removal, compaction and paving reinstatement where required.

Best time to plan stormwater

The best time is before paving, landscaping or final finishes are complete. It is usually easier and cleaner to trench, install drainage, remove spoil and compact areas before the site is finished.

What to send for a quote

Useful details include your suburb, photos of downpipes and paved areas, plans if available, access photos, and a short description of the renovation or extension. This helps Rogue Storm assess whether the job is a good fit before arranging next steps.