Home Extension

quick, easy steel frame design.

Outbuildings Home Extension

simple, affordable, easy.

1 Bedroom Granny Flats

design your own floor plan

The Standard

Are you looking to do an Outbuilding or Home Extension? Bribuild manufacture steel frame flat pack buildings to be assembled as a building extension. Our kit homes are suitable for DIY owner builder or assembly by a registered builder.


Our Lockup kit Building extension outbuilding come AU/NZ certified with the following inclusions:
- Double Glazed Aluminum Windows
- Double Glazed Sliding Doors
- R6.5 Star Insulation Design
- Termite proof Sub floor and footings
- Structural engineer certification (building permit)
- Footings engineering certification (slab or piers)
- Energy Report (building permit)
- Roofing, Flashing and Down pipes.

building permits

You don't need to worry about the paper work. When you purchase a Outbuildings Home Extension from us, we manage both the planning permit and the building permit. It is part of the process when you purchase our service.


You always have the option of Owner builder. If D.I.Y doesn't meet your requirement, you can always ask us to recommend a builder. We have great builders that are reasonably priced to assemble your kit granny flat.


We deliver from Melbourne, Sydney and Brisbane. We have a Tasmania service that operates from the Victorian office.

The standard Outbuilding Home Extension floor plan is 30m2

If these dimensions don’t fit your space, your welcome to design your ideal floor plan.

BASE PRICE FOR OUR LOCKUP Outbuildings Home Extension

$39,990 + GST

why choose our Granny flats

My daughter talked to Hume council about building the granny flat, this was no problem. we just had problems with the building permit. They fixed the building permit, we ended up buying the granny flat kit and my nephew assembled it.
Julie Armstead - VIC
I needed a better situation for my father, he is happy now he has his own space again. I found the kits online and gave them a call. Very impressed, start to finished.
Big thanks to Tony the builder that did the build.
Jack Hamesley - NSW