12 Knox St, St Marys is a 5 bedroom, 3 bathroom House with 4 parking spaces. The property has a land size of 618m2. While the property is not currently for sale or for rent, it was last sold in October 2025. There are other 5 bedroom House sold in St Marys in the last 12 months.
Rare opportunity to purchase this outstanding home with 2 dwellings in an unrivalled location, less that 1km from St Marys Station with new metro and St Marys CBD.
Situated in a quiet street and surrounded by quality homes, it's being sold as part of an estate and boasts an extensive list of features including a fully renovated 2 story 4-bedroom residence (2 upstairs and 2 on ground level), With ducted air conditioning upstairs, split systems downstairs and roller shutters throughout, each level also boasts its own large living area and lovely modern bathroom. The upstairs living room also boasts a convenient kitchenette and balcony offering views over the district all the way to the mountains.
Beautiful, renovated kitchen with 2 massive pantries, dishwasher and quality appliances. The home also features a fully enclosed sunroom/rumpus extension with ensuite bathroom, it overlooks the saltwater inground pool and easy care back yard with a large shed/workshop at the rear.
The Flat is modern, light and airy, 1 bedroom with oversized rooms plus a full-size kitchen and bathroom. Tiled throughout, It also boasts split system air conditioning and its own private entrance. One of the best 2nd dwelling/flats we have seen! It could be separately rented or may be a great solution for an extended family or those with elderly members as the flat has been designed to allow for it. With plenty of off-street parking, the carport and rear of the home is accessed through the automatic sliding security gate.
For investors seeking a perfect dual income property in the best location, the combined rent return would be approx. $1200.00 per week. With the St Marys regions growth expectations, boosted by the new metro station ( 1 Km ) out to the West Sydney AirPort precinct ( 20 km) and St Marys CBD ( 800m) , whether it be as an investment or an awesome family residence, it's the perfect time to consider what this home has to offer.
Overview
* Dual Living: Two separate homes on a single title – a 4-bedroom house and a 1-bedroom flat.
* Prime Location: Situated in a quiet street less than 1km from St Marys Station (with new Metro) and 800m from St Marys CBD.
* Investment Powerhouse: Strong potential combined rental return of approximately $1,250 per week.
Main House (Two-Storey Renovated Residence)
* Bedrooms: Four spacious bedrooms (2 upstairs, 2 downstairs), all with built-in robes.
* Living Areas: Large, separate living areas on both levels for maximum flexibility.
* Kitchen: Beautifully renovated kitchen featuring quality appliances, a dishwasher, and two massive pantries.
* Bathrooms: Three modern bathrooms in total – one on each level of the main house, plus a third ensuite in the sunroom.
* Upstairs Retreat: The upper level includes a convenient kitchenette and a balcony with district and mountain views.
* Comfort & Security: Ducted air conditioning upstairs, split systems downstairs, and roller shutters throughout.
* Bonus Rumpus: A fully enclosed sunroom/rumpus extension with its own ensuite bathroom.
The Flat (Second Dwelling)
* Layout: Modern, light, and airy one-bedroom residence with oversized rooms.
* Full-Size Amenities: Features a full-size kitchen and bathroom.
* Comfort: Tiled throughout with split-system air conditioning.
* Privacy: Has its own private entrance, perfect for tenants or family.
* Accessibility: Thoughtfully designed to be suitable for elderly family members.
Outdoor & Additional Features
* Pool: Saltwater inground pool.
* Yard: Easy-care backyard.
* Workshop: Large shed/workshop at the rear of the property.
* Parking & Access: Plenty of off-street parking with a carport, all secured behind an automatic sliding security gate.
Location & Investment Advantages
* Unbeatable Connectivity: Just 1km to St Marys Station, providing access to the new Metro line connecting to the Western Sydney Airport precinct.
* Urban Convenience: Only 800m from the shops, cafes, and amenities of St Marys CBD.
* Future Growth: Positioned in a high-growth area, set to benefit from major infrastructure upgrades.
* Versatile Opportunity: Ideal as a high-return investment or a fantastic solution for large, extended, or multigenerational families.
The size of St Marys is approximately 10.6 square kilometres. There are 35 parks, covering nearly 19.4% of the total area. The population of St Marys in 2016 was 12195 people. By 2021 the population was 13256 showing a population growth of 8.7% in the area during that time. The predominant age group in St Marys is 30-39 years. Households in St Marys are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in St Marys work in a machinery operators and drivers occupation.In 2021, 44.50% of the homes in St Marys were owner-occupied compared with 44.40% in 2016.
St Marys has 8,236 properties. Over the last 5 years, Houses in St Marys have seen a 48.96% increase in median value, while Units have seen a 50.06% increase. As at 31 July 2026:
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