What Affects the Cost
Clearing method. Electric eel or rod clearing runs $100–$300 for internal blockages. High-pressure jetting for roots, grease, or debris in longer runs costs $300–$600. CCTV adds $250–$550 for investigation.
Blockage cause. Grease and hair clear in 30–45 minutes. Tree roots and soil intrusion require extended jetting time, sometimes 1–2 hours for heavy root masses.
Stormwater vs sewer. Stormwater drains handle higher volumes and are often longer runs with more debris accumulation. Brisbane City Council is responsible for stormwater infrastructure beyond your property boundary, while sewer is managed by Queensland Urban Utilities.
Wet season timing. Heavy summer rainfall can overwhelm partially blocked stormwater drains, turning minor issues into urgent problems. Emergency callouts during storms carry premium rates.
Year-round root growth. Brisbane's subtropical climate means roots grow 12 months a year, so cleared pipes re-block faster than in cooler cities like Melbourne or Adelaide.
Access point location. Some older Brisbane properties have inspection openings buried under decks, gardens, or rear extensions, adding time to locate and expose them.
A grease blockage in a kitchen drain cleared with an electric eel in a newer North Lakes property sits toward $90. Recurring root intrusion from a camphor laurel in a 1960s Ashgrove sewer line, requiring extended jetting and CCTV investigation, pushes toward $750.
Blocked drains often become urgent during Brisbane's wet season when stormwater systems are already under load. After-hours, weekend, and public holiday callouts carry significant premium rates. If only one drain is slow and there is no sewage overflow, scheduling during business hours saves money. If sewage is backing up or stormwater is flooding your yard, call immediately.
Brisbane-Specific Considerations
Year-round root growth in established suburbs. Brisbane's subtropical climate supports continuous root growth, which is the primary driver of sewer blockages across the city's inner and middle ring. Unlike Melbourne or Adelaide where root activity slows through winter, Brisbane's roots grow aggressively all year. Mango trees, fig species (Moreton Bay fig, small-leaved fig), poinciana, and camphor laurel are common in suburbs like Ashgrove, Bardon, Taringa, Indooroopilly, and Coorparoo. These species have particularly invasive root systems that can extend well beyond the tree canopy. If you have cleared roots from a drain once, expect re-blockage within 12 months unless the pipe is repaired or relined. For properties with large trees within 10 metres of the sewer line and clay pipes over 30 years old, a CCTV inspection after clearing is a worthwhile investment to assess whether relining (from ~$2,500 for the first metre, then $200–$350 per additional metre) provides a permanent solution.
Wet season and stormwater. Brisbane's wet season (November–March) brings intense storms that dump large volumes of water in short bursts. Stormwater drains that are partially blocked by silt, leaves, or root intrusion cannot handle the flow, leading to backyard flooding, pooling, and property damage. Keeping stormwater grates clear and scheduling a pre-wet-season inspection helps avoid expensive emergency callouts during storms. Stormwater drainage beyond your property boundary is Brisbane City Council's responsibility. Report blocked stormwater drains outside your property to Brisbane City Council.
Queenslanders and high-set houses. High-set Queenslander homes in suburbs like Paddington, Red Hill, and Woolloongabba have exposed sub-floor plumbing that is generally easier to access and repair than slab-on-ground construction. This can reduce labour time for drain clearing and makes pipe inspection simpler. However, the cast iron waste pipes common in pre-1950 Queenslanders are at or past their service life and may need replacement rather than just clearing.
Sewer responsibility. Report main sewer blockages to Queensland Urban Utilities (QUU) on 13 23 64. QUU is responsible for the sewer main and attends main sewer blockages at no charge. Your private sewer connection between the property and the QUU main is your responsibility to maintain. QUU can provide a sewer plan showing where your private connection meets the main.
Hiring a Licensed Plumber in QLD
All drain clearing work in Queensland must be carried out by a QBCC-licenced plumber. Verify licences through the QBCC (Queensland Building and Construction Commission). For notifiable drainage work (repairs, relining, new connections), the plumber must issue a Form 4 Compliance Certificate. Queensland's QBCC licensing threshold for plumbing work is $3,300 (inc GST).
Worth checking:
Current QBCC plumbing licence number (verify online through the QBCC licensee register)
Public liability insurance
Written quote specifying clearing method, whether CCTV is included or additional, and any charges for difficult access
A good plumber will recommend a pre-wet-season check for properties with known root history rather than waiting for an emergency callout in January
How We Calculate
Estimates are based on current licenced plumber rates in the Brisbane metropolitan area, adjusted for typical property age and drainage conditions in QLD. All figures include GST. Prices cover standard residential drain clearing. Commercial, body corporate, or council stormwater issues may fall outside these ranges.