A 1913 Home Gets a Bold Twin Gable Extension

A heritage street frontage hides a bold rear transformation, where twin gable roofs define a modern extension with layered outdoor spaces.

Architecture firm Mihaly Slocombe has redesigned and extended a 1913 Edwardian home in Kensington, Australia, turning it into a generous, modern space for a family of five.

Originally built when the area was still open pasture, the house has seen the neighborhood evolve around it. The new project respects that history while introducing a bold extension that expands how the home is used today. Leo and Christine, along with their three teenage sons, wanted a home that could handle busy routines while still offering moments of privacy, all with a strong connection to the backyard they love.

A heritage street frontage hides a bold rear transformation, where twin gable roofs define a modern extension with layered outdoor spaces.
A heritage street frontage hides a bold rear transformation, where twin gable roofs define a modern extension with layered outdoor spaces.

A Subtle Street Presence with a Bold Shift Behind

From the street, the original home still takes focus, maintaining its historic character. Look a little closer and the new setback addition begins to reveal itself, hinting at the transformation behind.

The rear of the house, once altered in the 1980s, has been completely replaced. In its place, two gabled volumes define the extension. These twin peak roofs give the project its name and create distinct zones, both inside and out. One side opens to a covered patio connected to the kitchen, while the other features a custom bench that wraps neatly around the corner, offering another place to sit, gather, or pause.

A heritage street frontage hides a bold rear transformation, where twin gable roofs define a modern extension with layered outdoor spaces.
A heritage street frontage hides a bold rear transformation, where twin gable roofs define a modern extension with layered outdoor spaces.

Open-Plan Living That Connects Inside and Out

Step inside and the rear of the home opens up completely. The living room, dining area, and kitchen all sit within a single open-plan space designed for flexibility.

A clean, modern kitchen pairs white cabinetry with timber accents, opening directly to outdoor dining and supported by hidden functional spaces.

A built-in bench runs beneath a series of windows in the living room, creating a direct link to the outside. These windows open up, connecting to a matching bench on the exterior, turning the wall into a shared threshold between indoors and outdoors.

Open-plan living flows effortlessly into the outdoors, with built-in seating and large windows creating a seamless connection between interior and garden.
Open-plan living flows effortlessly into the outdoors, with built-in seating and large windows creating a seamless connection between interior and garden.

At the far end of the living space, a custom wood shelving unit with integrated drawers adds both storage and warmth. The same timber detailing continues through the bench seating and cabinetry under the television, tying the space together visually.

Open-plan living flows effortlessly into the outdoors, with built-in seating and large windows creating a seamless connection between interior and garden.

Private Spaces Tucked Within the Plan

Just off the main living area, a bedroom sits discreetly behind the custom shelving. Grooved white walls run through both interior and exterior surfaces, adding texture and continuity.

Folding wood-framed glass doors open the room directly onto the deck, extending the usable space. On the opposite side, a door leads into a private en-suite, making the room feel self-contained yet still connected to the rest of the home.

A tucked-away bedroom combines grooved white walls, folding glass doors, and direct deck access for a calm and flexible private space.
A tucked-away bedroom combines grooved white walls, folding glass doors, and direct deck access for a calm and flexible private space.
A tucked-away bedroom combines grooved white walls, folding glass doors, and direct deck access for a calm and flexible private space.

A Kitchen Designed for Everyday Use

At the other end of the open-plan area, the kitchen balances simplicity with warmth. Minimalist white cabinetry is paired with Glacier White Corian countertops, while Blackbutt timber accents introduce a natural contrast.

Folding glass doors sit beside the kitchen, opening to an outdoor dining area. Above, louvered windows help air move through the space, improving comfort without relying entirely on mechanical systems.

A clean, modern kitchen pairs white cabinetry with timber accents, opening directly to outdoor dining and supported by hidden functional spaces.
A clean, modern kitchen pairs white cabinetry with timber accents, opening directly to outdoor dining and supported by hidden functional spaces.

Hidden behind the main wall of cabinetry, a laundry room continues the material palette with a timber bench and open shelving, keeping utility spaces consistent with the rest of the home.

Hidden behind the main wall of cabinetry, a laundry room continues the material palette with a timber bench and open shelving, keeping utility spaces consistent with the rest of the home.

Layers of Material and Detail

Moving through the home, the original structure reveals itself in the hallway, where older details contrast with the newer intervention. A mix of flooring adds variation underfoot, including Blackbutt timber, goat’s wool carpet, and terrazzo. These shifts help define different areas without the need for walls.

Moving through the home, the original structure reveals itself in the hallway, where older details contrast with the newer intervention. A mix of flooring adds variation underfoot, including Blackbutt timber, goat’s wool carpet, and terrazzo. These shifts help define different areas without the need for walls.

In one bathroom, soft pink walls introduce a gentle burst of color, while in another, the vanity becomes the focal point beneath a round mirror. Terrazzo continues through wet areas, extending across the shower and wrapping around the built-in bathtub.

In this bathroom, soft pink walls introduce a gentle burst of color.
A mix of timber, terrazzo, and soft color accents creates layered interiors that balance texture, warmth, and visual contrast.
A mix of timber, terrazzo, and soft color accents creates layered interiors that balance texture, warmth, and visual contrast.

Light, Color, and Vertical Movement

A staircase topped with a skylight brings natural light deep into the home while connecting its different levels. Upstairs and in quieter zones, spaces become more expressive. A home office features colorful carpet alongside custom-designed desks and cabinetry, while a nearby bedroom continues the same carpet, paired with floor-to-ceiling windows and a door that looks out to the backyard.

Colorful carpets, skylit stairs, and full-height windows bring light and personality into quieter zones of the home.
Colorful carpets, skylit stairs, and full-height windows bring light and personality into quieter zones of the home.
Colorful carpets, skylit stairs, and full-height windows bring light and personality into quieter zones of the home.

Twin Peaks House brings together the scale and character of a 1913 Edwardian home with the needs of a modern family. The twin gabled extension adds space, structure, and flexibility, while the interiors balance simplicity with warmth through material and detail.


Photographer: Jack Lovel | Architect: Mihaly Slocombe (Warwick Mihaly, Erica Slocombe, Amiee Groundwater, Charlotte Guy, Jake Taylor) | Land Surveyor: Webster Survey Group | Quantity Surveyor: Cost Planner | Structural Engineer: Adams Consulting Engineers | Building Surveyor: Grimbos Building Surveyors | Builder: Melbourne Homes of Distinction | Stylist: Bea and Co Styling