Portable intent, clearly explained
See how expandable, foldable, and transportable terms map to real deployment choices.
Investor-Series LandingPublished February 28, 2026
Expandable and Portable Granny Flats
Compare fold-out granny flat options designed for faster deployment and practical budget control. Use the fit checker below to shortlist the right package, then continue into configurator or quote with clearer expectations.
Faster shortlist decisions
Use the fit checker to match timeline, budget, and mobility needs in under a minute.
Quote-ready guidance
Move directly from recommendation to configurator or site-specific quote workflow.
Portable Fit Checker
Use this quick interaction to match deployment posture with the most practical expandable package.
Example scenarios
No recommendation yet
Empty state: choose a preset or fill all selectors, then run fit check.
Investor package snapshot
Reference-only package bands for first-pass budgeting.
The Shell
Best PriceFrom $25,000
Structure-ready expandable home
Setup posture: 1-2 days site setup
The Complete
Most PopularFrom $45,000
Fully fitted expandable home
Setup posture: 1-2 days site setup
The Rover
PremiumFrom $55,000
Expandable home on wheels
Setup posture: Same-day stabilise + service connection phase
Expandable vs traditional build posture
| Decision angle | Expandable package | Traditional build |
|---|---|---|
| Typical timeline to liveable deployment | Factory lead + 1-2 day on-site setup posture | Often 9-18+ months end-to-end |
| Budget transparency | Model-level base pricing + explicit scope notes | Higher variation before final builder scope lock |
| Portability and relocation posture | Selectable package options including wheel-based model | Low portability after fixed-site construction |
Engineering Teardown
We publish every spec. Most importers won't.
Ask any supplier: tare weight, fire rating, and steel gauge. If they can't answer — that tells you everything.
⚙️
3.8-Tonne Chassis
3.8t tare weight
Full-galvanized Q235 steel frame. Main beams 100×100×2.5mm. Columns 150×150×2.5mm. Crane lifting points 6mm galvanized — zero frame deflection on single-point lift.
Cheap imports: 1.5mm thin-wall steel, under 2.5t ❌
🔥
Class A Fire Rating
100mm total wall system
75mm rock wool sandwich panels (Class A non-combustible) + 9mm bamboo-fibre interior + 16mm metal-clad exterior. Class A means it will not burn. Period.
Cheap imports: 50mm flammable EPS foam ❌
⚡
12KW Pre-Wired System
6mm² mains cable
20A RCD safety switch. Pre-wired throughout: 6mm² mains, 4mm² AC, 2.5mm² GPO, 1.5mm² lighting. Your local sparky just connects to mains.
Cheap imports: single thin cable, no RCD ❌
Full BOM — 20ft Expandable (37m²)
Frame (Q235 Galvanized)
- Top beam — 100×100×2.5mm
- Bottom beam — 80×80×2.5mm
- Columns — 150×150×2.5mm
- Crane pts — 6mm galvanized
- Wing frames — 40×80×2mm
Walls & Roof
- 75mm rock wool sandwich (Class A)
- 9mm bamboo-fibre interior panel
- 16mm metal-clad exterior panel
- Roof — 0.5mm steel + glass wool
Floor & Finish
- 18mm fire-rated cement board
- 2mm PVC wood-grain vinyl
Doors & Windows
- 8× aluminium windows (930×1000mm)
- 1× thermal-break aluminium entry door
- 2× interior steel doors
- 1× frosted glass bathroom door
Electrical (12KW)
- 20A RCD + LED lights throughout
- 6mm² mains, 4mm² AC, 2.5mm² GPO
Every number above comes from our factory BOM. We publish them because most importers can't.
How to use this page
- 1. Use the fit checker to get a recommendation based on timeline, budget, and mobility posture.
- 2. Review model cards and compare package fit against your use case.
- 3. Open configurator to test inclusions or request a quote with site context.
Assumptions and limitation notice
This page is planning guidance, not certifier, engineering, tax, or legal advice. Actual project viability and total budget depend on access, site works, service connections, and jurisdiction-specific approval requirements.
Reference baseline sources
Source set reviewed on February 28, 2026 for category-level market context only.
Expandable granny flat FAQs
What is the difference between expandable and portable granny flats?
Expandable refers to units that arrive compact and unfold on site. Portable or transportable usually describes how the structure is moved and positioned. Some packages combine both behaviors, but suitability depends on your property and local compliance pathway.
Can I move an expandable granny flat later?
Some model types are better suited to future repositioning than others. Relocation practicality depends on foundation method, service connections, access constraints, and local approval conditions at both origin and destination sites.
Are the prices on this page total project prices?
No. Listed values are base package references. Total project budgets can also include freight, site preparation, utility connections, local certifications, and optional upgrades.
Is this page a substitute for certifier or legal advice?
No. This page is decision-support guidance only. Confirm final compliance, certification, and legal requirements with licensed professionals for your site.
Related planning pages
Continue your decision with budget, compliance, and floor-plan pages.
Want a portable-ready recommendation for your exact site?
Share your postcode, target timeline, and preferred package. We will provide a practical path from shortlist to deployment.