Why select our Expandihome Class 1a Model?
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Class 1a compliant
All designs have passed professional Australian building certifications, fully complying with Council approval standards and eliminating the risk of "unapproved construction". Avoid fines, demolition, and other losses caused by non-compliance, and protect your property.
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Lower cost than traditional build
By shifting most of the construction process to factory production, our Class 1a expandable homes eliminate many on-site building delays and labour costs. This results in a more affordable solution compared to traditional home construction in Australia, without compromising compliance or liveability.
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Fast installation
Traditional homes often require lengthy on-site construction with multiple contractors and delays. Our Class 1a expandable homes are engineered for rapid deployment, arriving pre-finished and ready for quick installation, helping you move in or start renting much sooner.
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Professional Team Support
Our team is familiar with Council
approval rules across Australia,
providing full assistance from documentation preparation to communication on issues. You don't need to study complex policy terms by yourself, saving time and energy
Projects completed for class 1a expandable homes
Some projects documentatation approved including soil test, energy ratings etc.
Class 1a expandable homes - EXP Series
Typical projects range from $45,000 to $85,000 depending on size & customization.
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class 1a building model EXP80-3B 40ft 3bedrooms 1bathroom 1kitchen built to order
Regular price $80,000.00 AUDRegular priceUnit price per -
class 1a building expandable homes EXP80-2B 2bed 1bath 1k built to oder
Regular price $80,000.00 AUDRegular priceUnit price per -
class 1a building model EXP60-2B 60sqm 2bed 1bath 1kitchen built to order
Regular price $70,000.00 AUDRegular priceUnit price per
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What is the ExpandiHome Class 1a Model?
- In Australia, any residential construction must obtain approval from the local Council to ensure compliance with regional planning, building safety, and environmental standards.
- As the definitinon of Building Code of Australia Volumn 1, A6G2,
(1) A Class 1 building is a dwelling.
(2) Class 1 includes the following sub-classifications:
(a) Class 1a is one or more buildings, which together form a single dwelling including the following:
(i) A detached house.
(ii)One of a group of two or more attached dwellings, each being a building, separated by a fire-resisting wall, including a row house, terrace house, town house or villa unit.
ExpandiHOME Class 1a building can be your primary dwelling as well as secondary dwelling.
Tailor my class 1a homeKnow more about the process
See below diagram for how we work for your class 1a building.
AU Cyclone Ratings as Option
Cyclone rating will be required for region C and we are capable to offer cyclone rating house solution up to C3 in wind region.
Frequently Asked Questions
What's the difference between the standard model and class 1a model?
There are quite a few differences between the two models, for the reason originating from difference of compliancce with NCC and normal caravan. What you may notice is the 1a model has higher 2.4m interior ceiling, pitched roof, thicker wallpanels and PU instead EPS etc. These are part but not all. There are also structural re-engineering with Australian engineers verification for compliance, overall energy ratings and strict requirements from Australian Building Code.
Can I buy a class 1a stock?
Not exactly. As each 1a house is customized with your location and situation, we do not produce stocks ready and each must be customized and produced upon feasibility study passed and engineering preliminary approval.
Have you ever done the class 1a project?
Up to end of Oct 2025, we have been awarded over 10 contracts for class 1a and we are glad to introduce our approval consult talking with you for further verification and clarification if rquired.
Can I apply the First Home Owner Grant with your house?
Though we do not have clients applied FHOG before, but as regulation of the policy, for class 1a house it is permitted to apply. We hope you can be our customer to get the fund and approval in the early phase.