Cantilever option adds more space
IF YOU need more room in your house but do not have the ground floor space to do it, consider going up and outwards instead.
A cantilevered extension can be used to add an extra room to a house that protrudes from the front, rear or side of the building.
Sandberg Schoffel Architects director Michael Sandberg says while cantilevered rooms were not a new concept, they were becoming more popular.
“People are more interested in design and because it adds a value and creates character, they are willing to look at bit more outside of the normal,” he says.
“You can create a lot of drama with a cantilever. It’s a way of giving a building some dynamism.”
While the rooms are mostly added to the rear of a property, they can be built on any side of a house as long as it fits in with your council’s streetscape design rules.
Sandberg says the general rule of thumb is to cantilever out one third of the room from the building but they can be extended beyond this.
“If you are building with concrete, you can cantilever rooms quite easily,” he says. “(For) lightweight materials, you have to use beams to counterweight that.”
The technique can also be used on a smaller scale to create a window seat or add an extra nook to a room.
“We often add things in a master bedroom like a bay window that pops out,” Sandberg says.
Sandberg says lining the exterior of a cantilever with a contrasting material to the rest of the house, such as a timber or metal lining, can add to the dramatic effect.
“Just changing a colour in that space can make it stand out more,” he says.
A timber-clad cantilevered room on a Manly house by Sandberg Schoffel Architects. Picture: Tom Ferguson, Below: a cantilevered lounge at the front of a Northbridge home. Picture: Alex Nikulin
Pop out window on a Cremorne home by Sandberg. Below: the Northbridge home’s rear also has a cantilevered bedroom. Picture: Alex Nikulin