Custom Designed Granny Flats

Our Focus

We are a leading builder of premium quality, affordable Granny Flats in the northern suburbs of Perth WA.

We work with our clients to design bespoke Granny Flats that meet your individual needs.

With over 25 years experience we are able to work closely with you to overcome any challenges and produce a high quality result.

Our Designs

We have something for everyone.

Select a design from our 'Granny Flats by Hallmark' range or have our Designer work with you to design something custom to suit your individual needs.

Check out our designs, download our design brochure of reach out if you're looking for something more specific.

Our Process

Every site is unique, everyone has specific needs and Granny Flats by Hallmark are here to take care of everything for you.

Design | Approvals | Quality Work

Our team is small but mighty and are here for you every step of the way.  You'll never get lost in the system, client care is our main focus and we won't let you down.

Get In Touch With Us


Office Address:

Unit 4

49 Boranup Ave

Clarkson WA 6030


Open by Appointment Only


Postal Address:
PO Box 2693
Clarkson WA 6030

Looking at other ideas for your home or considering building?


Please take a look at our sister website for Renovations, Extensions and New Builds, offering the same quality and integrity we're known for.


Proud Members of

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