Builders in Sylvania
St Anthony Building Group works in Sylvania, on the Georges River side of the Sutherland Shire, building duplexes, new homes and granny flats and renovating homes. We are a licensed NSW builder (Contractor Licence 457054C).
- NSW Licence No. 457054CContractor licence, Builder class
- 5.0 on GoogleFrom 4 reviews (opens Google Maps in a new tab)
- Mon–Fri, 9am–5pmCall 0421 023 012
- Sutherland Shire & St GeorgeWorking across greater Sydney
Sylvania homes on the Georges River
Sylvania runs down to the Georges River, with Gwawley Bay and Oyster Bay on its edges. Houses are the most common home here: about six in ten occupied dwellings were separate houses in the 2021 Census, and a little over a quarter were semi-detached homes, townhouses or terraces, a higher share than in many neighbouring suburbs.
Sylvania has no railway station of its own. Gymea and Miranda stations on the T4 line are the closest. The Georges River Bridge, which crosses the river from Sylvania, is itself a listed heritage item.
Local planning
Local planning notes for Sylvania
Sylvania is covered by Sutherland Shire Council and the Sutherland Shire Local Environmental Plan 2015. On the State planning maps, waterfront and low-lying lots in Sylvania pick up more overlays than streets further back:
- Foreshore area: Parts of the Sylvania waterfront are shown as foreshore area on the plan's Foreshore Building Line map, which limits where new building work can go on those lots.
- Coastal environment: About a third of the suburb is inside the Coastal Environment Area mapped under State Environmental Planning Policy (Resilience and Hazards) 2021.
- Acid sulfate soils: The plan maps acid sulfate soils across Sylvania, including Class 1 land, which matters for excavation, pools and basements.
- Heritage: Listed items include the Georges River Bridge and the Tom Uglys Punt Site, as well as several waterfront houses and boatsheds.
Check your lot on the NSW Planning Portal, or ask Sutherland Shire Council for a planning certificate, before settling on a design.
Our services
Services we offer in Sylvania
Duplexes are what our Sylvania project is: two double-storey homes side by side. Whether your block can take one depends on its zone, size and shape.
New homes and knockdown rebuilds suit Sylvania owners who want a new single or double storey home without leaving the street.
Granny flats can work on a Sylvania lot with room at the rear, subject to the zone and any foreshore or coastal mapping.
Home renovations range from kitchens to extensions, including updates to waterfront homes where rebuilding further forward is limited.
Bathroom renovations are a common way to refresh a Sylvania townhouse or semi without a larger build.
Interior design and architectural design bring the layout, finishes and drawings together before construction.
Nearby suburbs
Sylvania shares boundaries with Miranda, Gymea, Oyster Bay and Kareela.
A project we have completed in Sylvania
Our most recent completed project is in Sylvania: a duplex in Sylvania, two double-storey homes completed in September 2026. The images on the project page are architectural renders of the design.
Sylvania FAQ
Sylvania building FAQs
Can’t see your question? Call 0421 023 012 and we’ll talk it through.
Can I build a duplex in Sylvania?
It depends on your lot's zone, size and shape under the Sutherland Shire Local Environmental Plan 2015. Some duplexes can be approved as complying development and others need a development application. We completed a duplex in Sylvania in September 2026 and can look at your block with you.
Do foreshore controls apply to my Sylvania property?
They can on waterfront lots. Parts of the Sylvania foreshore are mapped as foreshore area, and about a third of the suburb is in the Coastal Environment Area. Check your lot on the NSW Planning Portal before you design.
Is there a train station in Sylvania?
No. The nearest stations are Gymea and Miranda, both on the T4 Eastern Suburbs & Illawarra Line.
Planning a build or renovation in Sylvania?
Bring us your plans for a duplex, new home or renovation in Sylvania, however early they are. Consultations are free, and we take calls Monday to Friday, 9am to 5pm.
- 0421 023 012
- [email protected]
- Monday to Friday, 9am to 5pm
- NSW Licence No. 457054C