Premium Double Garages for Australian Homes: Sizes, Pricing and Specs

This expert guide covers standard double garage dimensions in Australia, garage prices, kit vs custom options, wind ratings (cyclonic and non‑cyclonic), council approvals, and how to configure a double garage and workshop for SUVs, utes and storage. Built for homeowners, renovators and investors after top-tier Colorbond steel sheds.

What is a standard double garage size in Australia?

“Standard” double garage dimensions vary by supplier and local planning rules, but these are the most common footprints for a 2 car garage:

• 6.0 m (W) x 6.0 m (D) x 2.4–2.7 m eave height — the classic Australian double shed
• 6.0–6.5 m (W) x 6.0–6.5 m (D) for larger SUVs/utes and storage
• 7.0 m x 7.0 m if you want a double garage and workshop or extra cabinetry

How wide is a double garage? For most Australian builds, a standard double garage width is 6.0 m, though 5.8–6.2 m appears frequently in modern subdivisions. For door openings, a double roller door is typically 4.8–5.2 m clear width (most common 5.0 m) and 2.1–2.4 m high. If you’re asking “how big is a double garage?” or need precise double garage measurements, allow at least 800–900 mm clearance at the sides and 900–1,200 mm at the front for storage or a workbench.

Which double garage dimensions suit SUVs, utes and storage?

For today’s larger vehicles, plan beyond the “minimum” double garage dimensions in Australia:

• Width: 6.2–6.5 m for two wider vehicles or if doors open frequently inside.
• Depth: 6.5–7.0 m to accommodate bull bars/tow bars plus shelving.
• Eave height: 2.7–3.0 m if you want overhead storage, a 4WD with roof racks, or a small hoist.
• Door height: 2.4–2.7 m for lifted 4WDs or vans.
• Layout tip: Put the workbench to one side at the rear, creating a practical double garage and workshop in a 7.0 x 7.0 m footprint.

What are the best shed materials for Perth’s climate?

In hot, UV-intense and coastal WA environments, cladding and coating choice matters. Here’s the go-to comparison many Perth builders use.

To choose the right construction, refer to our Steel Carport Buyers Guide Australia 2025.

How much does a double garage cost in Australia in 2025?

Garage prices vary by size, region, wind rating, slab specs and finishes. Typical ballparks for a 6.0 x 6.0 m double garage shed price (late 2024–2025):

• DIY double garage kit (non-cyclonic, uninsulated): $6,900–$10,500
• Installed (erected on existing slab): $14,000–$22,000+
• Turnkey with slab, doors, gutters, council docs: $18,000–$32,000+ (size and spec dependent)

Alternatively, for smaller footprints, read our Single Car Carport Dimensions in Australia for compact alternatives.

Cost drivers:

• Slab and footings: $110–$160/m² for 100 mm slab with mesh; thicker edges or reactive soil add cost.
• Wind rating upgrades (N3/C1+): +10–30% depending on region (e.g., cyclone-rated sheds QLD).
• Doors/openers: Add $1,200–$3,500 per double door with auto opener.
• Insulation/liner: $1,200–$3,000+ depending on system.
• Electrical/drainage: Highly site-specific.

For a cost of Colorbond double garage with premium colours, flashings and insulation, expect the higher end of the ranges. If you’re comparing a double garage kit vs installed, note that double garage kits Australia-wide often exclude slab, delivery to remote locations, and council fees. Ask for a fully itemised double garage cost before you commit.

How to choose the right double garage size and layout

• Vehicles: Measure bumper-to-bumper and door swing. Plan for future vehicles (ute, caravan, boat).
• Access & site: Driveway angle, boundary setbacks, eave height under eaves/gutters.
• Roof: Gable for classic looks and roof space; skillion (single-slope) for modern lines and easier solar.
• Doors: Single double door vs two singles. Two singles reduce heat loss and door weight in windy regions. Adding a side bay? Check Single Car Carport Dimensions in Australia for clearances, wind ratings and permit tips.
• Storage: Consider a 7.0 x 7.0 m two bay shed to incorporate a workbench and tall shelving. If overflow shelving and lockers are the goal, explore garden storage ideas for secure add‑ons and materials suited to your climate. Growing families should also see the 3 Car Garage in Australia article for extra options.
• Finish: COLORBOND in estate‑approved colours; ZINCALUME for rural value.

What wind rating and codes apply to your double garage?

Your engineer/designer must specify to the NCC 2022 and AS/NZS standards. Typical references for a custom-built double garage in Perth, Brisbane, or regional centres include:

• AS/NZS 1170.2: Wind actions (N1–N3 non‑cyclonic; C1–C4 cyclonic)
• AS/NZS 4600: Cold‑formed steel structures
• AS 4100: Steel structures
• AS/NZS 1397: Steel sheet and strip for structural purposes
• NCC 2022 Volume 2 (Class 10a garages/sheds)

Added 2024 WA wind-rating compliance notes Projects in coastal and escarpment suburbs around Perth may need higher wind classifications (e.g., N3) than inland areas. Always provide terrain category, shielding, and topography to your shed designer so they can deliver council-approved sheds WA-wide with correct hold-downs, purlin spacings and door bracing. For North QLD or exposed coastal zones, insist on wind-rated sheds for cyclonic areas with certified cyclone-rated sheds QLD documentation.

Do you need council approval for a double garage in Australia?

In most councils, a double car garage (Class 10a) requires planning/building approval unless it meets minor-works exemptions (size, height, setbacks). You’ll typically need site plan, engineering, elevations, wind classification, and stormwater details. Check your local requirements early to avoid delays.

How to Get Council Approval for Your Custom Shed in WA

1. Confirm zoning & setbacks: Call your local council planning desk.
2. Request wind classification: Provide site exposure and terrain to your engineer.
3. Prepare documents: Site plan, slab/footing design, elevations, door schedules.
4. Lodge BA application: Include structural certification and specifications for custom Colorbond garages Perth homeowners prefer.
5. Install per certified plans: Book mandatory inspections where required.

Real build snapshots

• Perth, WA — Custom 6.5 x 7.0 m Colorbond double garage and workshop: Gable roof, 2.7 m eaves, 5.0 m double roller door, side access, anticon blanket. Result: 2 vehicles + 3 m bench. Finish: Monument with Surfmist roof for heat reflectance.
• Townsville, QLD — 6.0 x 6.5 m cyclone-rated 2 car shed: Skillion roof leaning away from house, C-class wind detailing, upgraded door wind-locks. Outcome: Council-approved, lower insurance risk, robust in summer storms.
• Regional NSW — 7.0 x 7.0 m rural sheds NSW setup: Two bay shed with one bay for farm machinery storage, the other for an affordable carport for Australian homes, matching the homestead palette.

5-Step Buying Guide for Custom Sheds in Australia

1. Set the brief: Vehicle sizes, workshop/storage, future growth (boat, van, two story garage later).
2. Pick structure: Gable or skillion, 2.4–3.0 m eave height, door configuration.
3. Choose materials: Colorbond vs Zincalume, insulation, gutters/downpipes.
4. Engineer & quote: Ask for wind rating, footing/slab specs, and a full inclusions list. Compare DIY shed kits vs installed.
5. Council & delivery: Confirm approvals, lead times, installation schedule and warranty/service.

DIY kit vs custom-built: which is right?

FAQ: double garage sizes, permits and prices

What is the standard double garage size? Most common is 6.0 x 6.0 m, with 2.4–2.7 m eaves. For more comfort, 6.2–6.5 m wide and 6.5–7.0 m deep.

How wide is a double garage door? 4.8–5.2 m clear opening (5.0 m is typical). Height is usually 2.1–2.4 m; go 2.4–2.7 m for lifted 4WDs.

Do I need council approval? Usually yes, unless exempt. Check setbacks, height, site coverage and stormwater rules with your local council.

Is a double garage shed different to a “two bay shed”? Terms are often used interchangeably. “Two bay” can also describe two framed openings under one roof.

Are double garage kits Australia-wide compliant? Good kits include engineering for AS/NZS and NCC. Ensure your order matches your site’s wind rating and terrain.

What about a double garage for sale as a package? Package deals can be great value, but confirm inclusions (doors, gutters, delivery, engineering, council drawings).

Local climate, energy and durability pointers

• Heat (Perth, inland SA/WA): Lighter COLORBOND colours and insulation reduce radiant heat; ventilate with ridge/whirlybirds.
• Coastal corrosion: Upgrade to marine-grade coatings and sealed flashings within surf-mist zones.
• Storms (QLD/NSW): Choose wind-locked roller doors and certified hold-down systems.
• Energy: Insulation and solar-ready roof pitches improve comfort and running costs.

Useful references

• Australian Building Codes Board (NCC 2022)
• Housing Industry Association (HIA)
• Bureau of Meteorology — wind and climate data
• Australian Steel Institute — design and materials
• Energy.gov.au — insulation basics
• Master Builders Australia
• CSIRO — building science insights

Get a tailored design and quote

From steel sheds Perth to custom carports Melbourne and rural sheds NSW, we design and engineer council-ready, wind-rated double garages. Whether you want a budget double shed, a premium custom Colorbond solution, or a future-ready two story garage, we’ll specify the right size, wind rating and finish for your postcode.