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Granny Flat

The Katherine
56.16m²

A two-bedroom granny flat the whole family can live in.

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The Katherine
Floor area
56.16m²
Bedrooms
2
Bathrooms
1
Footprint
8.4m × 7.2m
Overview

A two-bedroom granny flat the whole family can live in.

Step up to a true two-bedroom home. The Katherine's 56.16m² layout gives you a generous open living area, two bedrooms and a full bathroom — a complete, comfortable granny flat or rental that maximises your backyard's potential.

It still arrives as a pre-cut flat-pack kit with engineering and council documents included. Under NSW Complying Development rules, a two-bedroom granny flat like this can be approved in as little as ten days.

  • Two bedrooms plus a full bathroom
  • Generous square footprint with patio
  • Complying Development approval in ~10 days
  • Engineering & council package included
The Katherine floor planIdeal for family granny flat
Specifications

Layout & schedule.

Overall footprint 8.4m × 7.2m. Final dimensions confirmed on your engineered plans.

Rooms & spaces
Living7.2m × 3.6m
Bedroom3.6m × 3.6m
Bathroom1.2m × 2.7m
Slimline patio3.6m × 1.2m
Window & door schedule
WindowAluminium sliding1200 × 1000
WindowAluminium sliding ×31200 × 1200
WindowAluminium sliding800 × 300
DoorAluminium sliding, 2-panel1800 × 2100
Ideal for
Family granny flatTwo-bed rentalMultigenerational livingBackyard investment

Every kit includes engineering ready for council. See full inclusions & the build process.

Gallery

Recent builds.

Grandline modular fence
Slenderline modular fence
Slenderline Aluminium fence
Slenderline Folded fence
Retainline retaining wall
Residential development fencing
Childcare centre fencing
Acoustic fencing installation
Slenderline modular fencing render
Modular fencing detail render
Residential boundary fencing
Slenderline panel render
What's included

A complete, engineered kit.

Every The Katherine ships as a pre-cut, fully insulated flat-pack with all fixings and council-ready engineering.

Panelspan® insulated wall panels — external and internal
Insulspan® insulated roof panels in Colorbond® or Zincalume®
Aluminium windows and sliding doors in a range of coloured frames
Pre-hung internal timber doors and jambs
Colorbond® trims, cappings, flashing and rainwater products
Blue Core steel framing system
Fixing and fasteners to assemble your Quick Built home
Structural plans, engineering certification and construction manual
Full inclusions & process
Your space, made simple

Start with a floorplan — or build it in 1, 2, 3.

Haven't found what you're looking for? Simply fill in the downloadable floor plan designer below.

QuickBuilt floor plan designer sketch sheetDownload the floor plan designer

The easiest way forward is simple: send us a floorplan and we'll prepare a tailored quote for your dream space.

Prefer to build it step-by-step? Our modular SIPs system makes it as easy as 1, 2, 3.

1

Choose your wall height

Start with the wall height that suits your design. Select our standard 2.4m walls or upgrade to a spacious 2.7m, 3m or 3.6m wall height.

2.4m
2.4mStandard
2.7m
2.7mUpgrade
3.0m
3.0mUpgrade
2

Choose your building width & length

Your width is set using our 1200mm wide precision-engineered SIPs panels that can be cut to any size — extend your space to whatever you need. Our modular SIPs system makes it effortless to scale your design with accuracy and speed.

3

Make it yours

Once your layout is set, shape the look, feel and functionality of your QuickBuilt home with a wide range of add-ons and personalisation features — all designed to work seamlessly with our high-performance SIPs system.

Architectural add-ons
  • Covered outdoor areas, carports or breezeways
  • Feature gables or extended rooflines
  • Your choice of doors and windows
  • Styles, colours and placements that suit your lifestyle
  • A selection of exterior cladding finishes
  • Your preferred Colorbond® roof profile and colour
Exterior finishes
Cladding
James Hardie AxonJames Hardie Fine TextureJames Hardie Brushed ConcreteTimber Shadowclad Grooved
Roof profile
CorroMono
Colorbond® colours

Ready to bring your space to life?

With QuickBuilt, creating your dream space is refreshingly simple. Start with a floorplan or build it step-by-step — our high-performance SIPs system gives you the freedom to design, customise and complete a home that fits your lifestyle perfectly. From compact studios to fully personalised tiny homes, every detail comes together with speed, precision and ease.

Your vision. Our system. A space you'll love living in.

Keep exploring

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The Kimberley02 · 59.67m²
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The Eyre03 · 14.4m²
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The Eyre

A compact backyard room you can build in a weekend.

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What our customers say

Quick Built Systems did an amazing job building my patio! Their team was professional, efficient, and delivered exceptional quality. The design and construction exceeded my expectations, and the attention to detail was impressive. The patio has transformed my outdoor space into a beautiful relaxation area. I've received countless compliments from friends and family.

Kristen Gavanas
Google review
Take your next step

Ready when you are.

For more information on our systems, finishes and pricing, get a free quote.

Or get in touch — we can help answer your questions.

Get a free quoteGet in touch
Quick Built Designs & Price Guide

Frequently asked questions.

QuickBuilt walls are lightweight, self-supporting modular panels that slide between posts — there's no need to build a frame or render block work. They deliver acoustic performance, privacy and a premium architectural finish in one system, install fast on most sites, and can be tailored with a range of heights, panel styles and finishes to suit your project.

Because the system is fully modular, installation comes down to four simple steps: dig the post holes, concrete the posts into the ground, slide the panels into place, then finish as desired. You can install it yourself as a keen DIYer, or we can arrange professional installation — just ask our team.

Yes — and significantly. The solid, mass-loaded panels are engineered as acoustic walls that can deliver 20+ dB of noise reduction, helping block and absorb noise from roads, rail corridors, neighbours and busy precincts so you get noticeably quieter, more private spaces. This performance isn't just theoretical — our walls have been professionally tested in a laboratory, and you're welcome to reach out to our technical staff for a copy of the test report. Acoustic performance increases with wall height and panel thickness, so the more demanding your site, the taller and thicker we'll typically specify — tell us about your location and noise source and we'll recommend the right configuration.

Each system has a standard maximum height — Slenderline and Grandline up to 3.0m, Slenderline Aluminium up to 2.4m, and Slenderline Folded up to 2.1m — which suits the vast majority of residential and commercial boundaries. For more demanding projects, our walls have been engineered up to 5.5m high, unlocking greater acoustic performance for road, rail and large-scale developments. Planning a wall above 5.5m? Reach out to our technical staff and we'll engineer a solution to suit your site.

Yes. Our Retainline panels integrate directly into the same wall to retain earth on sloping sites — up to 1000mm of retention as a standalone solution, or up to 750mm integrated into a boundary wall. Combining acoustic and retaining performance in a single wall means fewer trades on site and a cleaner, seamless finish.

Panels are supplied ready to paint with an exterior-grade acrylic in any colour you like, so the wall matches your home or development. You can also choose flush or expressed joints, different capping styles, and dress the wall up with slats, integrated lighting, tiling or stone cladding for a custom architectural look.

Slenderline Aluminium is designed for coastal and high-corrosion environments. It uses corrosion-resistant aluminium posts with 75mm panels, so you get the same acoustic and privacy benefits with materials suited to salt-air conditions.

Very little. The fibre-cement panels are durable and built for Australian conditions — there's no timber to rot or warp. An occasional clean and a repaint when you want to refresh the colour is generally all that's required over the life of the wall.

Approval requirements vary by council and depend on wall height and location, so it's best to confirm with your local council before you build. Where a wall sits on a shared boundary, it's also worth talking to your neighbour early. Our team can provide product specifications and engineering details to support your application.