Mainsail Avenue and Salacia Close sit roughly 250 metres apart on the same canal estate at the southern end of Brisbane Water, an island that connects to the mainland at a single point at Daleys Point. Yet they give a buyer two genuinely different experiences: an established avenue versus an enclosed waterfront close. Because the island is small and residential, schools, buses, shops and the wider lifestyle are shared at suburb level, so the real differences come down to street form, water positioning and value. This guide walks through those differences, then answers the questions buyers actually search.
Street Form and Everyday Feel
The clearest contrast is structural. Mainsail Avenue is an avenue of 37 houses with through movement, while Salacia Close is a cul-de-sac of 30 houses with no through-traffic. Both sit at 85% owner-occupier and 15% rented, giving each a settled, established character.
Mainsail Avenue lots run from about 655 to 696 square metres, with individual titles recorded at 648, 655, 661, 688, 691 and 696 square metres. The stock is consistent premium, two-storey double-brick dominant, from the 1970s and 1980s estate, and modernisation continues: alterations and additions at 29 Mainsail Avenue were recorded in October 2025, and 25 Mainsail has underfloor heating. Salacia Close lots are marginally more compact at 633 to 674 square metres, tightly held and low-turnover.
Waterfront Living and Outlook
Water access is the island’s defining lifestyle, and the two streets express it differently. Mainsail Avenue spans a broader mix of canal-front and riverfront homes. 11 Mainsail Avenue is a full-width waterfront on a wide canal with a newly built jetty, mooring pole and slipway complete with an electric winch and a sunny northerly aspect. 6 Mainsail Avenue is an absolute waterfront four-bedroom home, and 30 Mainsail takes in uninterrupted views over Shelter Cove, with a sunny easterly aspect, floor-to-ceiling sun-room windows, an in-ground pool and a triple garage. The street even carries a three-bedroom riverfront holiday rental from about $695 a night that sleeps six, with a private jetty, a north-facing glass-fenced saltwater pool, a covered deck, a fire pit and a designer renovation.
Salacia Close reads as an absolute-waterfront micro-street, with private jetties, a shared jetty, a slipway, pools and long water views across 14, 15, 18 and 24 Salacia. 15 Salacia Close adds a sandy beach and a solar-heated pool, 14 Salacia Close has a jetty with a pontoon and a level lawn, and 24 Salacia Close pairs a private jetty with a pool.
Property Market and Value
No published street-level median exists for either street, so value is best read through address-level sales and labelled ranges. The suburb median house sale price clusters around $1.90M to $1.975M across the main portals.
Mainsail Avenue has the most recent recorded sales. 33 Mainsail sold for $2,000,000 in February 2026, 25 Mainsail sold for $1,970,000 in April 2025, 13 Mainsail sold for $2,600,000 in 2023 and 18 Mainsail sold for $2,000,000 in November 2022. The street’s published price range sits at $1.97M to $2.34M, with address estimates running from about $2.09M at 19 Mainsail to $2.43M at 11 Mainsail, and 28 Mainsail around $2.34M.
Salacia Close carries the island’s higher estimated value ceiling rather than its highest confirmed sale. 15 Salacia sold for $1,950,000 in 2025, 24 Salacia sold for $2,200,000 in March 2024 and 14 Salacia sold for $2,147,000 in 2024, while estimates reach $3,817,000 at 18 Salacia and about $2,775,000 at 25 Salacia. That $3.817M figure is an estimate rather than a sale, with 18 Salacia last selling for $2,100,000 in 2022. On the rental side, 18 Salacia was offered at $1,900 a week with a private jetty and sandy beach, and 24 Salacia leased furnished with a private jetty and pool.
Schools and Commuting
Schooling is effectively identical for both streets. There is no school on the island, and both feed Empire Bay Public School for primary and Brisbane Water Secondary College Umina Campus for secondary. The deltas are tiny: Empire Bay Public School is a 16 minute walk from Mainsail Avenue and 15 minutes from Salacia Close, while the secondary campus is an 11 minute drive versus 12.
Transport is shared at suburb level. Bus routes 59, 64 and 5364 serve the island, with line 64 running about 19 to 20 minutes to Woy Woy. Woy Woy railway station is about a 10 minute drive for direct rail to Sydney, and Sydney itself is about 1 hour 20 minutes by car. The Ettalong Wharf to Palm Beach ferry runs about 35 minutes. Salacia Close has a named adjacent boarding point, Helmsman Bvd opp Salacia Cl, while Mainsail Avenue shares the same routes without a Mainsail-specific stop name, a presentation detail rather than a service difference.
Amenities and Community
There are no shops or cafes on the island, so residents reach Ettalong Beach, Umina and Woy Woy in about a five minute drive, with Erina Fair as the larger regional centre. Parks and reserves include Mangrove Park, Long Arm Parade Reserve (Avina Park) and Beachfront Parade Reserve, while the island’s coves include Crescent Cove, Marina Cove, Nannygai Inlet, Sandy Cove, Sandy Inlet and Shelter Cove.
Water-based recreation is the core lifestyle: boating, kayaking, stand-up paddleboarding, fishing and swimming, with leisurely walks and bike rides looping around the island. It is a settled community of about 1,080 people with a median age of 58 and roughly 87% owner-occupied homes, plus an active residents’ association.
Conclusion
The takeaway is simple. Mainsail Avenue offers a larger-lot, established avenue with the most recent sales and a broad $1.97M to $2.34M band. Salacia Close is a compact, low-traffic cul-de-sac defined by absolute-waterfront positioning and the island’s higher estimated value ceiling. Both share the same schools, buses, shops and community, so the decision comes down to street character, water access and budget. Whichever way you lean, the practical next step is to walk both streets at the same time of day and compare the outlooks.
Frequently Asked Questions
What is Mainsail Avenue’s property price range in St Huberts Island?
Mainsail Avenue’s published price range sits between $1.97M and $2.34M. Recent sales support it: 33 Mainsail sold for $2,000,000 in February 2026 and 25 Mainsail sold for $1,970,000 in April 2025. Current address estimates run from about $2.09M at 19 Mainsail to $2.43M at 11 Mainsail, with 28 Mainsail around $2.34M.
What are the most recent Mainsail Avenue house sales prices?
Recorded sales are 33 Mainsail Avenue at $2,000,000 in February 2026, 25 Mainsail Avenue at $1,970,000 in April 2025, 13 Mainsail Avenue at $2,600,000 in 2023 and 18 Mainsail Avenue at $2,000,000 in November 2022.
What is Mainsail Avenue like to live on?
Mainsail Avenue is an established avenue of 37 houses with through movement and 85% owner-occupier occupancy. The stock is consistent premium two-storey double-brick dominant from the 1970s and 1980s, and the street keeps modernising, with alterations and additions at 29 Mainsail Avenue recorded in October 2025 and underfloor heating at 25 Mainsail.
Does Mainsail Avenue have waterfront homes with jetties?
Yes. 11 Mainsail Avenue is a full-width waterfront on a wide canal with a newly built jetty, mooring pole and slipway with an electric winch, and 6 Mainsail Avenue is an absolute waterfront four-bedroom home.
How big are Mainsail Avenue blocks?
Mainsail Avenue blocks run from about 655 to 696 square metres, with individual titles recorded at 648, 655, 661, 688, 691 and 696 square metres, plus a 737 square metre holding at No. 1.
What schools do Mainsail Avenue residents use?
There is no school on the island. Mainsail Avenue is in the catchment for Empire Bay Public School, a 16 minute walk away, and Brisbane Water Secondary College Umina Campus, an 11 minute drive away. Woy Woy Public School is an 18 minute walk, and private options such as Coast Christian School and Green Point Christian College are nearby.
What is Salacia Close’s property price range in St Huberts Island?
Confirmed Salacia Close sales run from $1,950,000 at 15 Salacia in 2025 to $2,147,000 at 14 Salacia in 2024 and $2,200,000 at 24 Salacia in March 2024. Estimates extend higher: $3,817,000 at 18 Salacia and about $2,775,000 at 25 Salacia, the island’s higher estimated ceiling. The $3.817M figure is an estimate rather than a sale, with 18 Salacia last selling for $2,100,000 in 2022.
What are the most recent Salacia Close house sales prices?
The most recent recorded sales are 15 Salacia Close at $1,950,000 in 2025, 24 Salacia Close at $2,200,000 in March 2024 and 14 Salacia Close at $2,147,000 in 2024.
Does Salacia Close have absolute waterfront homes with private jetties?
Yes, and it is the street’s signature. 14, 15, 18 and 24 Salacia Close all present private jetties, a shared jetty, a pontoon, a slipway, pools and long water views, with 15 Salacia Close and 18 Salacia Close adding sandy beach frontage.
Is Salacia Close a cul de sac?
Yes. Salacia Close is a close or cul-de-sac of 30 properties with no through-traffic, giving it an enclosed, low-movement feel, and sits at 85% owner-occupier with lots of 633 to 674 square metres.
What is Salacia Close’s rental market like?
Salacia Close commands premium waterfront rents. 18 Salacia Close was offered at $1,900 a week as a luxury absolute-waterfront home with a private jetty and sandy beach, and 24 Salacia Close leased furnished with a private jetty and pool.
How big are Salacia Close blocks?
Salacia Close blocks run from about 633 to 674 square metres, with individual titles recorded at 633, 655, 658, 666, 673 and 674 square metres. They are marginally more compact than Mainsail Avenue, offset by the street’s waterfront positioning.