The City of Unley's April 2026 minutes show council pushing through a $13.18M capital renewal program and $8.41M in new capital works for 2026-27 — that's road, drainage, and infrastructure money that'll be moving dirt across the municipality. Kings Park sits in the path of this, particularly properties feeding off services near the Greenhill Road corridor where walking and cycling upgrades are still on the books. The early May rain — 14mm on the 2nd, 15mm on the 4th — has already tested the older stormwater systems on the flatter allotments near Kings Park Reserve. Add in the Kings Park Retirement Village expansion at 297 Goodwood Road, where eight new townhouses are going up by mid-2026, and you've got increased utility load hitting infrastructure that was sized for 1950s density. The clay soil under Ningana Avenue and Valmai Avenue is already reactive — it swells when wet, shrinks when dry, and cracks pipes that were marginal to begin with. If your drains slowed after last week's rain or your toilet's been gurgling, don't wait for the ground to move again — call us and a plumber we dispatch will get there tonight.
City of Unley notes
“Proposed Capital Renewal Program for 2026-27 requiring net funding of $13.18M endorsed for community consultation (Resolution C0043/26, Item 4.8)”
City of Unley
That's road, drainage, and footpath renewal money — when council digs up infrastructure in Unley, properties with ageing clay sewer lines near the work zones are at risk of vibration damage and joint displacement.
“Proposed New Capital Projects for 2026-27 requiring net funding of $8.41M endorsed for community consultation (Resolution C0043/26, Item 4.8)”
City of Unley
New capital works mean new excavation — Kings Park properties feeding off services near planned upgrade corridors should get their lines inspected before ground disturbance starts.
“Disability Access and Inclusion Plan 2026-2030 adopted, including infrastructure accessibility upgrades (Resolution C0039/26, Item 4.3)”
City of Unley
Accessibility upgrades often involve footpath and kerb ramp works — that's shallow excavation near water and sewer services, which can expose or disturb old pipe connections.
●Source: City of UnleyLast updated April 2026
Kings Park profile
Kings Park sits tight against Greenhill Road, and the City of Unley is currently looking at ripping up that corridor for walking and cycling upgrades. That means road works, ground disturbance, and older service lines in the area could cop some stress. If your property backs onto or feeds off infrastructure near Greenhill Road, it's worth knowing what's moving — because council digs have a habit of shaking loose things that were already on the way out.
Ningana Avenue and Valmai Avenue are where the clay soil bites hardest — those streets sit on the most reactive ground in Kings Park, and the original earthenware pipes have been shifting with every wet-dry cycle since the 1950s. The retirement village expansion at 297 Goodwood Road is adding eight new townhouses to infrastructure that was sized for single dwellings, which means flow changes and pressure fluctuations for neighbours on the same mains. Properties backing onto Kings Park Reserve have the double problem of mature tree roots and flat allotments with minimal stormwater fall — after the early May rain, those yards would've held water for days. The Edwardian homes closer to Goodwood Road are the oldest stock, with sewer lines that predate modern PVC by half a century.
When calls come in: Kings Park callouts typically come in the evening — 6pm to 10pm — when families are home, showers are running, and dishwashers are draining. That's when a marginal sewer line hits capacity and backs up. Weekend mornings are the second peak, especially after Friday night's laundry and Saturday's lawn watering have saturated the system.
Kings Park emergency callouts
Emergency Plumber — Burst pipe — water off, flooding riskKings Park, SA · 30–60 min
Emergency Plumber — Blocked drain — slow or backing upKings Park, SA · 30–60 min
Emergency Plumber — Hot water failure — no heat or pressureKings Park, SA · 30–60 min
Emergency Plumber — Sewer backup — sewage at floor wasteKings Park, SA · 30–60 min
Emergency Plumber — Leaking tap or fitting — urgent repairKings Park, SA · 30–60 min
Emergency Plumber — Gas fitting emergency — isolation requiredKings Park, SA · 30–60 min
Kings Park Plumber FAQ
Council's endorsed $13.18M in capital renewal and $8.41M in new capital works for 2026-27, which means excavation, trenching, and heavy vehicle movement across the municipality. If your property's services run near a road scheduled for renewal or your sewer connects to a main under a footpath being upgraded, ground vibration and soil disturbance can shift pipe joints that were already stressed. Clay pipes in Kings Park are particularly vulnerable — they're rigid, brittle after 70+ years, and don't flex when the ground moves. If you notice new gurgling, slow drainage, or wet patches in your yard after nearby council works start, get a CCTV inspection done before a crack becomes a collapse.
Slow drains after 14-15mm of rain in early May could be a few things. If it's just the shower or a single basin, you might have a localised blockage — hair, soap, debris — that a plumber can clear quickly. But if multiple fixtures are slow, or you're hearing gurgling from the toilet when the washing machine drains, that's a sign your sewer line is partially blocked or bellied. In Kings Park's clay soil, tree roots exploit wet conditions to push into pipe joints, and a partial blockage can become a full backup within days. Don't wait for sewage to come up through the floor waste — call for a drain camera inspection to see what's actually happening underground.
Earthenware pipes fail in stages. First sign is usually slow drainage that keeps coming back even after you've had it cleared — that means roots are re-entering through cracked joints or the pipe has bellied and debris keeps collecting. Second sign is wet patches or unusually green grass over the sewer line — that's effluent leaking into the soil. Third sign is sinkholes or ground subsidence along the pipe run. By the time you smell sewage inside or see backups through floor wastes, you're past the point of patching — you're looking at a full pipe replacement. A CCTV inspection costs a fraction of an emergency dig and tells you exactly where the damage is.
A 1960s Kings Park home typically has earthenware sewer pipes, galvanised steel water supply lines, and a storage hot water unit that's been replaced at least once but might be due again. The sewer line is your biggest risk — 60+ years of root intrusion and soil movement means joints are compromised even if you haven't had a backup yet. Galvanised supply lines corrode from the inside, restricting flow and eventually pinholing — if your water pressure has dropped over the years or you see rust-coloured water when you first turn on a tap, the pipes are failing. Hot water units last 10-15 years; if yours doesn't have a date stamp or the stamp says anything before 2012, budget for replacement before it floods your laundry.
You can't tell from the symptoms alone — both a blockage and a collapse cause slow drainage, gurgling, and eventually backups. The difference matters because a blockage can be cleared with a jet or electric eel, while a collapse means excavation and pipe replacement. A CCTV drain camera is the only way to know for sure. The camera shows whether the pipe is intact but obstructed (roots, debris, grease) or whether the pipe wall has cracked, separated, or caved in. In Kings Park, where earthenware pipes sit in reactive clay, a 'blockage' that keeps coming back is often a collapse in progress — the pipe has bellied or cracked and debris keeps catching at the same point.
Yes — it's becoming standard practice in Kings Park because buyers and their building inspectors have learned the hard way. A cracked earthenware sewer line discovered during a pre-purchase inspection gives the buyer leverage to renegotiate or walk away. If you get a CCTV inspection done before listing, you know what you're dealing with: if it's clear, you've got a selling point; if there's damage, you can fix it on your terms or price it in transparently. The inspection costs a few hundred dollars; a failed sale or a $10,000 price reduction costs a lot more. Properties on Ningana Avenue and Valmai Avenue, where the clay soil is most reactive, are the ones buyers are most cautious about.