Think sumptuous, elegant, unsurpassed. Quite simply, ‘Rivergum Retreat’ is the most magnificent home, with the biggest price tag, ever to come onto Brisbane’s property market.

The bottom line is that this 2-level home, consisting of 3 wings connected by a central hub, has 7 bedrooms, 9 bathrooms, 4 powder rooms, 2 offices and a 7-car garage. Its 5-star resort facilities include a horizon pool, championship tennis court, gym, spa, ‘gold class’ cinema, climate-controlled wine cellar, billiard room and pontoon on 1.2ha (nearly 3 acres) of prime riverfront gardens.

An arresting architectural feature is the use of aesthetically pleasing curves from the winding paved driveway and the facade of the house itself to the intricate coffered ceilings, studded with lights to create starscapes at night. The massive circular entry, soaring to 6.6m, is matched perfectly by the sweeping curved staircase. Seamless curved glass windows on the upper and lower levels admit river and garden views and contribute to the sense of light and space. The curved form is repeated in the smaller details, the arc of the birch cabinets in the guest ensuite, in the 580-bottle wine cellar, the kitchen’s pearl green granite bench tops, the classic marble surrounds of the spa in the master ensuite and in the pool design and manicured garden beds.

Every aspect of this mansion reflects a determination to capture perfection. The double brick construction with concrete fill is carefully sited so that every major room enjoys optimal north-easterly views across gardens to the river beyond. Smart technology tames climate extremes, electronically programmed blinds admit the view, but not harsh glare or heat. Other high-tech wizardry can open and close drapes at pre-determined times, regulate the air temperature (the gym and guest suite have separate air-conditioning systems), water the garden, heat the pool and replace water lost by evaporation, provide security and video surveillance, create a magical floodlit garden at night and provide user access to the latest communication and computer networks.

Careful use of colour creates interest, defines spaces and creates mood. Muted cool cream interior tonings contrast with the restrained but dramatic use of black in the lacquered entry doors, the internal granite water feature with underwater mazes profiled by underwater lighting, and curved granite bench tops of the wet bar in the billiard room. Other splashes of colour appear throughout, such as fuchsia in the games room, lime green in the upper level of the west wing, vivid red in the Japanese bedroom, dusky blue in the sixth bedroom and ochre in the huge formal lounge room with a fireplace. A blue feature wall as part of the two-level atrium contrasts strikingly with the lush green plants.

A combination of textures creates an impeccable finish. Sprawling sandstone patios outside contrast with the cool gleam of vitreous tiles inside that reflect the lightbeams of dozens of recessed quartz halogen downlights. The warmth of handcrafted timber can be found in the staircase balustrade, cabinets in the cloakroom, the fully fitted executive office, large functional kitchen and timber flooring in the high traffic areas around the kitchen, sitting room, games room and walkway. In contrast, the upper level is carpeted for underfoot luxury and noise minimisation. The 12-seat theatre, complete with wet bar, tiered plush seating with tray tables, electronically controlled curtains, a full bathroom and top-grade sound system, is fitted with commercial-grade carpet. Elsewhere, unexpected touches surprise, glass panelling, backlit niches in a wall for displaying treasures, silk drapes, marble bench tops and red pebbles in a raised desert garden.

In addition to massive formal and informal, and indoor and outdoor entertaining areas, 7 bedrooms (6 with ensuites) and the guest suite in the east wing, there is a fully self-contained guesthouse. It is a perfect venue for entertaining, lavishly or intimately, in tranquil, private surroundings, framed by the river and stunning views. The kitchen is capable of catering to large functions and includes a selection of European appliances that speed preparation time, climate-controlled pantry and chef’s preparation area. The outdoor BBQ area features a Teppanyaki grill and char grill for steaks, stainless overhead 3.5m extraction unit, commercial glass door under bench refrigeration units, commercial glass washer and ice maker. Outdoors, you and your guests can enjoy a stroll in the impeccably maintained gardens, dotted with mature gums and maple trees, past the porte cochere (large enough to accommodate multiple vehicles) and down to Brisbane’s widest private suburban river frontage (132m). Take a plunge in the heated horizon pool, pilot a cruise downriver from the sturdy boat ramp, make it game, set and match on the championship tennis court or come indoors for billiards, catch Hollywood’s latest in the ‘super star’ cinema, give your body a workout in the gym (equipped with cable TV) or exercise your mind in the computer room or by using the touch screen in the cinema. It’s a luxurious way to unwind, relax and recharge.

This is a showcase property that will impress, inspire and excite. Its contemporary design, range of facilities and postcard setting, close to Australia’s fastest growing capital city, endow it with a presence and grace that place it in a category of its own in Brisbane’s real estate.