Why sunken living rooms are finding new life in Perth extensions

The sunken living room is returning to Australian residential design with a distinctly contemporary attitude. Once associated with the conversation pits of mid-century houses, the lowered lounge is now being reconsidered as a spatial device for creating intimacy, separating functions and giving an extension a stronger sense of architectural character. In Perth, where generous blocks, bright weather and a relaxed approach to indoor-outdoor living shape many renovations, the idea has particular relevance.

A change in how households use open-plan space is driving the renewed interest. Families still want connected kitchens, dining areas and living rooms, yet they are also looking for places that feel quieter and more defined. A modest change in floor level can establish that distinction without enclosing the room or interrupting sightlines. Across Contemporary’s design coverage, this broader conversation about how Australian homes are adapting reflects a growing interest in spaces that are flexible, tactile and carefully attuned to daily life.

A softer alternative to the open-plan interior

For years, the open-plan living area has been treated as a default solution in Australian housing. It promises light, connection and easy entertaining, though a large uninterrupted room can become visually noisy. The kitchen, television, children’s play area, dining table and work-from-home setup may all compete for attention. A sunken lounge offers a subtle way to introduce hierarchy, allowing one part of the plan to feel more sheltered without relying on walls or doors.

The level change is often only a few steps, but its psychological effect can be substantial. Descending into a seating area creates a sense of arrival and enclosure, even when the room remains open to the rest of the house. Sofas can sit around a central rug or fireplace, while the higher circulation zone frames the lounge as a destination. This can make a long extension feel less like a large rectangular container and more like a sequence of connected rooms.

The approach also aligns with current thinking about the limitations of continuous open space. Rethinking open-plan living has become part of a wider architectural discussion in Australia, particularly as homeowners seek acoustic comfort, visual calm and greater flexibility. The lowered room does not reject openness; it gives openness structure.

Why Perth is well suited to the format

Perth’s suburban fabric provides conditions that can support a more spatially ambitious extension. Many homes in suburbs such as Mount Lawley, Wembley, Nedlands and Fremantle occupy relatively broad sites, allowing new living areas to stretch into rear gardens rather than being confined to narrow additions. The city’s abundance of post-war homes, Californian bungalows and brick villas also creates opportunities to contrast original rooms with a more sculptural contemporary intervention.

The climate is another factor. Perth’s long, hot summers encourage residents to move between shaded courtyards, verandahs and internal living spaces throughout the day. A sunken room can sit beside a garden or pool while remaining visually connected to them, especially when wide glazing, sliding doors or a lowered terrace extend the composition outdoors. With careful orientation, deep reveals and external shading, the lounge can benefit from daylight without becoming exposed to the harsh western sun.

Local building practice does require discipline. Ground levels, drainage and seasonal groundwater conditions need to be assessed before excavation, particularly on sites with reactive clay or areas prone to water management issues. In a renovation, the existing slab, footings and services can limit how far the floor can be lowered. A successful Perth project therefore treats the sunken lounge as part of a complete environmental and structural strategy, rather than adding a dramatic step simply for visual effect.

Making the level change feel deliberate

The best examples tend to make the transition legible from the beginning. Broad steps, a continuous stone edge or a change in ceiling treatment can signal that the lowered space is intentional. A narrow stair squeezed beside a kitchen island may feel like an afterthought, while a generous threshold can become part of the room’s identity. Joinery, seating and lighting should reinforce the geometry instead of obscuring it.

Material selection has a strong influence on whether the space feels warm or theatrical. Timber flooring can bring continuity from the existing house, while terrazzo, brick, polished concrete or richly coloured carpet can give the lounge its own atmosphere. In Perth, locally sourced stone and robust masonry can connect an interior to the landscape, especially when the palette reflects pale sand, muted bush tones or the deeper colours of native planting.

Furniture should be selected with the lower profile in mind. Deep sofas, built-in benches and low coffee tables can strengthen the feeling of retreat, though circulation must remain generous enough for everyday use. The room needs to accommodate more than a carefully styled arrangement for photographs. A practical lounge should allow children to move through it, guests to gather comfortably and residents to carry laundry, books or dinner between connected areas.

Working with heritage homes and existing levels

A sunken addition can be especially effective when it meets an older Perth house. Many character homes have a clear front-to-back sequence, with formal rooms facing the street and service spaces leading towards the garden. Replacing the rear portion with a lower, open living zone can create a strong contrast between the scale of the original building and the openness of the extension.

The junction must be resolved with care. Retaining brick walls, timber details or pressed metal ceilings can preserve the memory of the existing house, while the new floor level establishes a contemporary centre of gravity beyond it. Glazed links, framed openings and changes in ceiling height can help the old and new areas read as distinct but related. The goal is rarely to imitate the original architecture; it is to make the meeting between periods feel considered.

Recent Perth renovations demonstrate how valuable courtyards and intermediate spaces can be in this process. The Nedlands bungalow transformation shows how a familiar suburban house can be reorganised around light, landscape and connection. That same logic can support a lowered lounge, particularly when the extension opens to a planted court rather than a purely hardscaped backyard.

The practical details behind the atmosphere

Safety and accessibility should shape the design from the earliest sketches. A change in level affects guests with limited mobility, young children and anyone carrying objects through the house. Handrails, compliant stair dimensions, visible edges and well-positioned lighting are essential. Where a fully accessible route is required, the lounge may need an alternative connection through a ramp or adjoining circulation zone.

Waterproofing and ventilation deserve equal attention. A lowered floor can be vulnerable if the surrounding ground is not properly drained, and the area below the existing level may require a considered subfloor or slab solution. Perth’s hot summers also make cross-ventilation, ceiling fans and external shading important. Large windows can bring the garden into view, but they need to be balanced with operable openings and protection from heat gain.

There is also a financial reality to consider. Excavation, retaining structures, revised drainage, structural engineering and custom joinery can make a sunken living room more expensive than a standard extension. The investment is easier to justify when the level change improves the plan as a whole: creating a defined family room, strengthening the relationship with the garden and resolving awkward existing levels. A memorable gesture has value when it performs several jobs at once.

Lighting completes the experience after dark. Recessed fittings, concealed LED strips and low lamps can emphasise the lowered geometry without making the room feel overdesigned. A warm pool of light below eye level can give the lounge an intimate quality, while brighter circulation lighting keeps the steps clear. In a city where evening entertaining often moves between indoors and outdoors, this layered approach allows the room to shift from family retreat to social setting.

Sunken living rooms are gaining attention because they answer several current needs in one architectural move. They create separation within open plans, add depth to modest extensions and offer a stronger connection between domestic interiors and the garden. In Perth, their success depends on responding to climate, site conditions, heritage context and the everyday habits of Australian households.

For designers, the appeal lies in the opportunity to make a familiar room feel newly composed. For homeowners, the benefit is a living area with atmosphere and purpose rather than another undifferentiated zone. As Perth renovations continue to explore more nuanced relationships between old and new, inside and outside, and openness and retreat, the lowered lounge is likely to remain a compelling part of the conversation. Explore more local projects and architectural ideas through Contemporary’s Perth design platform.