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Fremantle  Builders & Contractors

Commercial & Residential Building Contractors

Granny Flats and Cottages Modern or Tradition Range


Fremantle Builders can provide a full turnkey service managing every step of the process from your first obligation free consultation and quote to site survey, design, approvals, construction and maintenance to when you receive your keys upon completion.

We offer a number of designer granny flat options incorporating traditional or contemporary feels with construction options including lockup and completion with the choice of standard or premier finishes.  Additionally we are happy to work with you to design and construct a building that suites your individual budget and requirements. A granny flat constructed by Fremantle Builders will be a great addition to your property. 

Traditional Range

Granny Flat Design
Granny Flat Design

STUDIO 26m² 

Granny Flat Design
Granny Flat Design

TWO 41m² 

Granny Flat Design
Granny Flat Design

ONE 60m² 

Granny Flat Design
Granny Flat Design

STUDIO 31m² 

Granny Flat Design
Granny Flat Design

ONE 53m² 

Granny Flat Design
Granny Flat Design

ONE 62m² 

Modern convenience meets good economic sense.


In WA Local councils dictate the maximum size of an ancillary dwelling or granny flat limiting the floor area to a maximum of 70 m² although this can differ across local councils.


Changes made to legislation in 2013 allow home owners to rent granny flats with the move designed to ease rental housing constraints and significantly increasing passive rental income for property investors. These changed regulations allow granny flats to be built in residential areas limited to one main home and one granny flat on the same block.


Fremantle Builders offers several design and construct granny flat options from studio, 1, 2 and 3 bedroom designs incorporating traditional or contemporary feels with construction options including lockup or completion with the choice of standard or premier finishes.


Fremantle Builders architectural team can design your individual granny flat to your personal requirements and budget creating a home or second dwelling on your property that meets or exceeds your expectations.


Fremantle Builders understands that each block of land is unique overcoming any topography or site related conditions. We create through consultation and liaison the perfect customised design tailored to meet your requirements paying close attention to, privacy, sunlight and amenity, future objectives, your design requirements and budget. We can also design to suit disability and limited mobility access requirements.


Once the complying development is certified by either a private certifier or via council development approval process Fremantle Builders build your Granny Flat to the highest standards complying with Legislation, Australian Standards, National Construction Code and Building Regulations.


Fremantle Builders can provide a full turnkey service managing every step of the process from your first obligation free consultation and quote to site survey, design, approvals, construction and maintenance to when you receive your keys upon completion.


At Fremantle Builders, we pride ourselves on delivering exceptional quality and outstanding value.


Granny Flats and Cottages
Traditional Range

Granny Flat Design
Granny Flat Design

STUDIO 26

Granny Flat Design
Granny Flat Design

TWO 41m²

Granny Flat Design
Granny Flat Design

ONE 60m²

Granny Flat Design
Granny Flat Design

STUDIO 31

Granny Flat Design
Granny Flat Design

ONE 53m²

Granny Flat Design
Granny Flat Design

ONE 62m²