Mount Hawthorn Extension | Toorak Builders Perth
Completed Mount Hawthorn rear extension
Project 01 · Mount Hawthorn

One house.
Two eras.

A renovation and rear extension that kept the original home intact at the street and rebuilt the way it worked behind it.

Major renovation · Timber-framed rear extension · Perth WA
Project record

Mount Hawthorn Extension

TypeRenovation + extension
StructureTimber framed
Key spacesKitchen + living
LocationMount Hawthorn
The brief

More room without losing the house.

The existing home already had the character and street presence the owners wanted. The issue was what happened behind it: the layout, living areas and connection to the rear no longer suited the way the house needed to function.

The project introduced a new kitchen and living zone, laundry and ensuite, opened the back of the home to the alfresco, and required substantial roof and structural work to bring the old and new together.

The job was not to make the original home disappear. It was to make the whole property work as one house.
Mount Hawthorn home before renovation
Before · Existing house
Mount Hawthorn home after renovation
After · Retained frontage
Three project decisions

The moments that shaped the job.

Rather than turn this page into another general service explanation, these are the three project-specific decisions that mattered most on this build.

Existing rear of Mount Hawthorn home
01 · Open the rear

Create a new family zone.

The back of the house was reworked to make room for the kitchen, living spaces and a stronger connection to outside.

Timber framing Mount Hawthorn extension
02 · Build the addition

Frame around the existing house.

The new structure had to accommodate large openings, the new room arrangement and the geometry of the existing building.

Roof integration Mount Hawthorn extension
03 · Join the two

Resolve the roof and junctions.

The most important construction work happens where the extension meets the original house—structure, roof lines, thresholds and weatherproofing.

Construction sequence

From footprint to finished extension.

A short visual record of how the rear addition developed. This is intentionally project-specific; the broader timber construction detail sits on the dedicated Timber & Lightweight page.

Mount Hawthorn extension slab
Stage 01

New footprint

Base prepared for the rear extension and new internal spaces.

Mount Hawthorn timber frame
Stage 02

Framing

The new addition begins to establish its volume and major openings.

Mount Hawthorn roof works
Stage 03

Roof integration

New and existing structure are tied together and weatherproofed.

Completed Mount Hawthorn extension
Stage 04

Completion

The new rear elevation opens the living spaces toward the yard and alfresco.

The result

The character stays at the front. The everyday living moves to the rear.

The finished project gives the home a very different internal life without forcing the original frontage to become something it is not.

The kitchen and living spaces now sit within the new addition, with larger openings creating a direct relationship with the alfresco and back garden.

Discuss a similar project
Mount Hawthorn completed kitchen
Mount Hawthorn ensuite
Mount Hawthorn retained character detail
Completed Mount Hawthorn character home
Mount Hawthorn · Project complete

Planning a renovation with similar constraints?

Toorak Builders works on major renovations and extensions across Perth. If the property has an existing house worth working with, we can help assess how the new work should connect to it.

Start a project