Patio Kit Estimator
Get an instant patio kit estimate.

Traditional corrugated steel patio roofing.
From
$39 pw*
Total Price
$5,260
Incl GST
This estimate is a guide. It uses your chosen size, design and Corrugated roofing. Standard estimates do not include optional engineering unless we say so. If needed, engineering is priced on its own in every region. Your final price also depends on colour, roofing and site needs. The weekly figure is a 36-month example. It does not confirm an available finance product or term.
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LEARN ABOUT THE FREE WORKSHOPIndicative Kit Estimates · Inc. GST
FREESTANDING FLAT PATIO PRICES
Transparent, Indicative Pricing For Freestanding Flat Patio Kits In WA
Browse indicative Freestanding Flat patio kit estimates by popular size below, or use the calculator above to estimate your own size in seconds. All estimates include GST.
Calculator output is an indicative estimate, never a fixed price or quote. Freight is always quoted separately per order.
FREESTANDING FLAT PATIO PRICES
A Freestanding Flat patio is a self-supporting structure; placement depends on site conditions, boundaries, easements, services and planning controls. The estimates below cover the popular published sizes so you can gauge your budget quickly.
For broader design context, see our patio planning questions.
FREESTANDING FLAT INDICATIVE ESTIMATES
Indicative kit estimates for the popular published sizes, priced by the same verified pricing formula as the calculator above.
Indicative Estimates By Size & Roofing
| Size | Corrugated | Trimclad | Spanplus 330 | Insulated |
|---|---|---|---|---|
| 3m long x 3m wide | $3,535 | $3,535 | $3,715 | $4,525 |
| 6m long x 3m wide | $4,570 | $4,570 | $4,930 | $6,550 |
| 6m long x 4m wide | $5,260 | $5,260 | $5,740 | $7,900 |
| 6m long x 6m wide | $6,640 | $6,640 | $7,360 | $10,600 |
| 9m long x 4m wide | $6,640 | $6,640 | $7,360 | $10,600 |
| 9m long x 6m wide | $8,710 | $8,710 | $9,790 | $14,650 |
WHAT IS A FREESTANDING FLAT PATIO?
A completely self-supporting flat-roof patio that can be positioned almost anywhere on the property. Generally one of the most cost-effective freestanding patio styles available — the simple roof structure provides excellent strength while keeping costs under control.
Flat (skillion) roof on a completely self-supporting structure — not restricted by the home's roofline, wall locations or existing structure.
- Complete Design Freedom
- Modern Architectural Appearance
- Excellent Value For Money
- Ideal For Outdoor Entertaining
WHAT DO WA HOMEOWNERS USE THEM FOR?
POPULAR FREESTANDING FLAT SIZES
3m x 3m
Perfect for smaller outdoor spaces.
6m x 3m
One of WA's most popular patio sizes.
6m x 4m
Ideal for outdoor entertaining.
6m x 6m
Large outdoor living area.
9m x 4m
Excellent for larger properties.
9m x 6m
Premium entertaining space.
These are popular published kit sizes — not structural limits. Custom sizes are priced through the calculator and quote flow.
WHAT AFFECTS YOUR FREESTANDING FLAT PRICE?
Every Freestanding Flat kit is priced on the same published factors:
- Length
- Width
- Roofing profile
- Wind region
- Engineering requirements
- Site conditions
- Optional upgrades
ROOFING PROFILE OPTIONS
Corrugated Roofing
Australia's classic patio roofing profile.
Trimclad Roofing
A modern steel roofing profile.
Spanplus 330 Roofing
A premium concealed-fix roofing profile.
Insulated Roofing Panels
The ultimate outdoor living roofing option.
Indicative estimates above cover the roofing sheets with verified pricing; other profiles are quoted separately.
POPULAR COLORBOND® COMBINATIONS
| Roof | Frame |
|---|---|
| Surfmist® | Monument® |
| Shale Grey® | Basalt® |
| Dune® | Woodland Grey® |
| Paperbark® | Woodland Grey® |
| Monument® | Monument® |
Preview any combination on your own home with our Design It On My House tool, or explore the full range on our Colorbond patio options page.
WHAT'S INCLUDED IN A FREESTANDING FLAT KIT
Structural Steel Components
- Posts
- Beams
- Rafters
- Purlins
Roofing Materials
- Corrugated Roofing
- Trimclad Roofing
- Spanplus 330 Roofing
- Insulated Roofing Panels
Hardware
- Brackets
- Bolts
- Screws
- Fixings
Optional Engineering Documentation (not included in the standard patio kit price)
- Structural certification
- Wind region information
- Design documentation
Every kit includes a free 1-hour installation workshop (at the factory OR by video call) plus written step-by-step instructions.
WHAT'S NOT INCLUDED
We keep pricing transparent — these items are not part of the standard kit price:
- Freight is not included in kit pricing. It is always quoted per order by postcode zone — never published as a fixed price.
- Installation labour is always excluded. The business supplies DIY kits with full support but does not install and does not refer installers.
DELIVERY ACROSS WA
Kits are delivered throughout Perth metro and regional WA (postcode-zone based). Factory collection is available.
Freight cost is quoted individually per order — never a listed price. Check your zone with the delivery checker.
DIY INSTALLATION, FULLY SUPPORTED
DIY patio kits designed for capable owner-builders.
Free 1-hour installation workshop (factory or video call) plus written step-by-step instructions with every kit.
Read the patio installation guideFINANCE OPTIONS
View general repayment examples on our patio finance page, then apply through humm90 when you're ready. Approval, eligibility criteria, fees and terms and conditions apply.
Explore patio financeFREESTANDING FLAT PATIO FAQS
Can a Freestanding Flat Patio be installed anywhere?
In most cases yes, provided suitable footings can be installed and local requirements are met.
Is a Freestanding Flat Patio cheaper than a Gable Patio?
Generally yes. Flat roof patios typically require fewer structural components.
What roofing profile is most popular?
Corrugated and Spanplus 330 are currently among the most popular options.
Can I install a Freestanding Flat Patio myself?
Yes. Our DIY patio kits are designed for capable owner-builders.
Is engineering included?
Engineering is not included in the standard patio kit price. It can be arranged as an optional, project-specific service where required; confirm the scope and price in your quotation.
Do you deliver throughout WA?
Yes. We supply patio kits throughout Perth and regional Western Australia.
Does a freestanding patio need approval in WA?
Freestanding patios generally still require approval in Western Australia, even though they are not attached to the house. Because they have their own footings and roof, they are treated as a structure and are assessed against the Building Code, wind loading and your council's planning rules. The fact that a patio stands alone does not automatically exempt it from a building permit. Check the specific requirements for your block with your local government before ordering or installing.
Do I need a permit for a patio in WA?
Whether a patio needs a building permit or another approval depends on the project, property and current requirements applied by the relevant authority. Confirm the applicable pathway with the permit authority or a registered building surveyor before building.
Do you deliver patio kits across all of WA?
Yes, we deliver patio kits statewide from our Bellevue factory, covering Perth and regional WA. Because kits are engineered for your specific wind region, they suit metropolitan, coastal and remote locations alike. Delivery details and timing depend on your location, so let us know your address for specifics.
Do you offer an installation workshop or support?
Yes, we provide an installation workshop and technical support to help DIY builders assemble their kits with confidence. The workshop walks through the key steps and common questions before you start on site. You can also reach our team if something is unclear during your build.
Do I need a concrete slab before building?
You need a suitable base, which is usually a concrete slab or engineered footings depending on your design and ground conditions. The engineering specifies footing sizes and depths so the patio is properly anchored for your wind region. Get the base right and cured before you start erecting steel.
Are your patio kits engineer certified?
Engineering is not included in the standard patio kit price. It is available as an optional, project-specific service. When arranged, the engineering documentation is prepared for the applicable wind region, terrain category and selected design.
Are there finance options for a patio?
Yes, finance options can make a patio more manageable by spreading the cost over time rather than paying upfront. Our patio finance page outlines how this works so you can plan your budget. Approval and terms depend on the provider, so review the details before committing.
What Colorbond colours are available for patios and sheds?
Colorbond is available in a wide palette of colours ranging from light neutrals through to deep charcoals and classic heritage tones. This lets you match the roof, gutters and fascia of an existing WA home or create a contrasting feature. The easiest way to compare options is to preview shades on a render before deciding.
OTHER FLAT PATIO PRICE CATEGORIES
Each flat design is priced separately. Choose the exact flat patio type you're after:
Ready For Your Exact Freestanding Flat Price?
Send us your size and Colorbond colours and we'll prepare a detailed Freestanding Flat patio kit quote.
