When kids hit their teens, your house suddenly feels smaller. The atmosphere is hectic, groups of friends traipse in and out, and parents often retreat to a bedroom for peace and quiet. However, one clever family with teenage twins got ahead of the curve, asking Hartree and Associates Architects to remodel their home to accommodate these changes and create a private apartment for the parents down the road.

modern tan brick home with garage

dog leaving into outdoor pool on deck

The owners of the Goldtree House, a 1950s home in East Fremantle, Australia, wanted the renovation to include ample space for their children to entertain guests, as well as help the house withstand frequently inclement weather. They also needed a revamp that adhered to their firm budget while providing the best views of nearby Fremantle Harbor.

interior living space with hardwood paneling and open deck

Stairway leading to second floor of house

The first step was removing the existing roof and constructing a new top story. The added level includes a new master bedroom, plenty of living space, and a kitchen with sweeping views all around. The owners envision this level as their private “apartment” many years in the future.

shaded patio with table and chairs

Kitchen with marble island and floor to ceiling windows

The ground level is devoted to the needs and tastes of teenagers and their friends. The internal spaces were simplified and revamped to include ample views of the surrounding landscape as well as optimum sunlight and a current of internal breezes. The floor plan easily flows from the entryway to the great room for adolescent games and socializing. It also provides easy access to the terrace, thriving garden and pool, the latter of which was designed to eliminate the need for a privacy fence.

upstairs hallway with view of living space

Bathroom with tub and gold vase

Related: A 1950s house receives a bioclimatic renovation in Mexico

Besides a photovoltaic solar panel array, the home also includes eco-friendly water and energy management through natural air ventilation, energy-efficient fixtures and equipment, and native garden plants that require minimum watering. Two wind turbines and storage batteries for power are also part of the home’s green technology.

The twins were involved in the renovation from inception through completion, which gave them a sense of satisfaction and accomplishment. They proudly share the outcome with their friends.

+ Hartree and Associates Architects

Images via Robert Frith