If you are buying or selling a property in the Hawkesbury Local Government Area, there is one detail that deserves more attention than it has received. Although Sydney Water officially took over operation of the Windsor Sewer Scheme on 1 July 2026, properties connected to the scheme continue to incur a separate Sewer Infrastructure Charge on their Council rates. This is not a sewer usage charge. Instead, it is a long-term infrastructure levy introduced to recover historic borrowing used to repair damage to the sewer network following the devastating March 2021 floods.
Affected property owners will pay approximately $344.84 per year (or $86.21 per quarter) for around 10 years, representing a total liability of about $3,448 per property. Although wastewater services are now provided by Sydney Water and many customers will benefit from lower ongoing sewer service charges, this infrastructure charge remains payable through Council rates for eligible properties connected to the former Windsor Sewer Scheme.
For sellers, transparency is essential. A current Council rates notice will usually disclose the Sewer Infrastructure Charge. Providing this information early in the conveyancing process helps avoid unnecessary questions during contract negotiations. Buyers, meanwhile, should carefully review the rates notice to understand how this ongoing charge may affect the property’s future holding costs. While it should not necessarily discourage a purchase, it is another financial consideration that should be factored into the decision-making process.
What You Need to Know About the Windsor Sewer Infrastructure Charge
| Item | What It Means |
| Sydney Water charges | Separate from the Sewer Infrastructure Charge. |
| Annual charge | Approximately $344.84 per year. |
| Quarterly charge | Approximately $86.21 every quarter. |
| Duration | Approximately 10 years. |
| Reason for the charge | Repayment of historic Council borrowing for flood-related sewer infrastructure works. |
| Commonly affected areas | Windsor, South Windsor, Bligh Park, Windsor Downs, McGraths Hill, Mulgrave, Vineyard, Pitt Town and Clarendon. |
When purchasing property, understanding ongoing outgoings is just as important as negotiating the purchase price. Well-informed buyers can budget more accurately, while sellers who disclose the charge early help build trust and reduce the likelihood of delays during due diligence. Clear information usually leads to smoother negotiations and greater confidence for both parties.
It is also worth noting that Sydney Water’s takeover of wastewater services has reduced regular sewer service costs for many affected households. As a result, the overall financial position may still be favourable despite the temporary infrastructure charge. Understanding the difference between an ongoing service charge and a historic infrastructure repayment is an important part of assessing the true cost of property ownership.
Flash Conveyancing Advice
Before exchanging contracts, ask your conveyancer to review the latest Council rates notice and explain any ongoing infrastructure charges affecting the property. Understanding these costs before settlement can help you budget accurately and avoid unexpected surprises after you become the owner.
At Flash Conveyancing, Julian & Renee understand that the true cost of owning property isn’t always reflected in the purchase price alone. Ongoing Council infrastructure charges, special levies and other long-term obligations can significantly influence the overall cost of ownership. That’s why they carefully examine Council rates, contract documents and settlement adjustments to ensure buyers know exactly what financial commitments come with a property, while helping sellers disclose these matters clearly and confidently. Their proactive approach helps minimise surprises, reduce settlement risks and keep every transaction running smoothly.
With extensive experience across the Blacktown, Hawkesbury, Blue Mountains, The Hills, Hornsby and Parramatta council areas, Julian & Renee proudly assist clients buying, selling and transferring property throughout **Acacia Gardens, Angus, Annangrove, Arndell Park, Baulkham Hills, Beaumont Hills, Bella Vista, Blacktown, Bligh Park, Box Hill, Castle Hill, Cattai, Clarendon, Colebee, Dural, Gables, Galston, Glenhaven, Glendenning, Glenorie, Glenwood, Grantham Farm, Kellyville, Kellyville Ridge, Kenthurst, Kings Langley, Maraylya, Marsden Park, Melonba, Middle Dural, McGraths Hill, Mulgrave, Nelson, North Kellyville, North Rocks, Northmead, Norwest, Oakhurst, Parklea, Pitt Town, Quakers Hill, Riverstone, Rouse Hill, Schofields, Seven Hills, South Windsor, Stanhope Gardens, Sydney, Tallawong, The Ponds, Vineyard, Windsor, Windsor Downs, Winston Hills, Newcastle and Wollongong. Whether you’re purchasing your first home, investing or selling property in an area affected by changing Council charges, Flash Conveyancing provides practical advice, personalised service and meticulous legal guidance to help ensure every settlement is transparent, compliant and completed with confidence.
