ACT approval guide
Modular Home Approvals in the ACT
The ACT has a central Territory planning system rather than separate local councils. A modular home may be development-approval exempt where every criterion is met, but building approval and lease, site and servicing checks can still apply.
Last reviewed
1 August 2026
Publisher and reviewer
ModuHaus Technologies planning content review
Review methodology
We compare important planning and building claims with current government guidance, record when each source was checked and use cautious language where eligibility depends on the site, council or proposal. This editorial review does not replace project-specific advice from the relevant authority or qualified professional.
In plain English
- Start with the intended use and building classification. A home and a non-habitable structure follow different rules.
- Check the site controls before choosing a model. Overlays, services and access can change the pathway.
- Confirm the current planning and building steps with the relevant council, certifier or building surveyor.
Approval overview
How the pathway is framed
In the ACT, approvals run through a centralised planning system. Fixed secondary dwellings generally require a Development Application, while moveable dwellings may use temporary permit pathways.
References: [1] ACT Planning - single dwellings, [2] ACT Planning - check if you need a DA, [3] ACT Planning - check if you need a building approval, [4] ACT Planning - complying with a development approval. Eligibility still needs confirmation for the property and proposal.
- Fixed modular homes
- Fixed secondary dwellings and permanent modular homes generally require DA review through the ACT planning system.
- Moveable dwellings
- Moveable dwellings may be considered through temporary permits depending on use, duration and site context.
- Utilities and services
- Service connections, fire access, stormwater and infrastructure impacts should be checked early.
- Common pathway
- Confirm the Territory planning requirements, intended duration of use and whether the building is fixed or temporary.
State framework
Planning, building and responsible authorities
The Planning Act 2023, Territory Plan 2023 and exempt-development regulation frame ACT planning assessment. The Territory Planning Authority administers development applications, while an ACT building certifier assesses the building-approval pathway under building legislation and the NCC.
- The Territory Planning Authority assesses development applications and administers the Territory Plan.
- An ACT building certifier assesses building approval, inspections and completion documentation.
- The Environment, Planning and Sustainable Development Directorate provides planning and building guidance and property information.
- Utilities, the Emergency Services Agency and heritage or environmental authorities may need to confirm servicing and site constraints.
DA-exempt development
A single dwelling or other development may avoid a DA only when it satisfies the general and specific exemption criteria, relevant development controls and any neighbour-information requirements.
Development Application
A DA is required where the proposal is not exempt or needs assessment against the Territory Plan. Lease purpose, zone policy and site controls form part of the review.
Building Approval
Building work will usually need building approval even where a DA is not required. Any exemption declaration or DA must be resolved before the building approval is issued.
Class 1a versus Class 10a
A permanent modular dwelling is commonly Class 1a. A private garage, shed or similar non-habitable structure may be Class 10a. The ACT exemption guidance distinguishes Class 10 structures from dwellings; a structure approved as non-habitable cannot lawfully be treated as a home.
Check NCC building classificationsSecondary dwellings
A secondary residence needs assessment against the current Territory Plan, lease and block controls. ACT guidance states that a block containing a primary dwelling and secondary residence cannot be subdivided under the Planning Act or Unit Titles Act, so it should not be planned as a separately titled property.
Practical pathway table
Frame the right approval conversation.
This table is a preliminary comparison, not an approval outcome. A proposal may qualify for a particular pathway only when all current state, local and site requirements are satisfied.
| Project type | Intended use | Fixed or movable structure | Habitable or non-habitable | Existing dwelling on the land | Likely planning check | Building or certification check | Services and utilities | Who should confirm the pathway |
|---|---|---|---|---|---|---|---|---|
| Permanent modular home | Primary or long-term residence | Usually fixed to an engineered footing or foundation system | Habitable dwelling | May be proposed on vacant or already-developed land | A planning permit, DA or another state pathway may apply. Confirm zoning, overlays and local controls. | Building approval, certification and NCC evidence are commonly required. | Confirm water, wastewater, stormwater, power, access and installation requirements. | Council or planning authority, certifier or building surveyor, engineer and relevant licensed trades. |
| Secondary modular dwelling | Additional long-term dwelling on the same property | Usually fixed | Habitable dwelling | An existing approved primary dwelling may be relevant or required for the intended pathway. | May qualify for a streamlined pathway where every state and local condition is met; otherwise further assessment may apply. | Building approval and residential certification commonly remain necessary. | Check shared or separate services, wastewater, stormwater, access and possible infrastructure implications. | Council or planning authority, certifier or building surveyor, and service authorities where relevant. |
| Backyard office or studio pod | Work, study, creative or non-residential ancillary use | Fixed, relocatable or portable depending on the product | Usually non-habitable; sleeping, bathing or cooking can change the classification and pathway | Often located with an existing dwelling, but property and use requirements still need confirmation. | A minor or exempt pathway may be available in some circumstances. Confirm size, placement, use and local controls. | Building or structural approval may still apply, especially when fixed, serviced or used differently from the approved purpose. | Confirm power, data, plumbing, wastewater, stormwater and access requirements. | Council, certifier or building surveyor, and licensed trades for connected services. |
| Tiny home on wheels | Temporary accommodation or another moveable-use pathway | Moveable vehicle or caravan-style structure | Fitted for occupation, but not automatically approved as a permanent dwelling | An existing dwelling, building work or licensed park may affect available temporary-use options. | Local laws, camping rules, occupation duration and land use may need review. Do not assume wheels remove approval requirements. | Vehicle or caravan rules may apply while fixed residential use can trigger building and certification requirements. | Permanent utility connections, decks, footings and wastewater arrangements can change the assessment. | Local council or relevant state authority, plus a certifier or building surveyor if treated as a building. |
| Amenities or service building | Toilet, shower, bathroom or site-support facility | Fixed or relocatable | Non-habitable | Not always determinative; the wider site use and users of the facility matter. | May require planning review depending on location, permanence, public use and the broader site approval. | Building, plumbing, waterproofing and accessibility requirements may apply. | Water, wastewater, ventilation, power, accessibility and maintenance access should be confirmed. | Council, certifier or building surveyor, hydraulic consultant and licensed plumbing or electrical trades. |
Confirm the current pathway with the relevant council or planning authority, certifier, building surveyor and qualified professionals before purchase, delivery or installation.
Before product selection
Checks to make early
- 01
Confirm the crown lease purpose, zone policy and relevant Territory Plan controls.
- 02
Check whether every DA-exempt criterion is satisfied or a DA is required.
- 03
Review easements, building envelopes, solar access, heritage and environmental constraints.
- 04
Confirm building approval and NCC requirements with an ACT building certifier.
- 05
Resolve utility, stormwater, driveway and installation access before finalising the product.
Site constraints
Overlays and services can change the pathway.
Bushfire
Bushfire-prone areas can require access, defendable space, water supply and construction responses coordinated with planning and building requirements.
Flood and drainage
Overland flow, easements, stormwater infrastructure and finished floor levels can constrain siting and engineering.
Heritage and landscape
Heritage registration, significant landscapes, trees and environmental values can remove exemptions or require specialist assessment.
Lease and block controls
Lease purpose, crown lease conditions, easements, building envelopes, solar access and private open space can affect what can be approved.
Wastewater and service connections
Confirm water, sewer, electricity, stormwater, driveway and emergency access with the relevant providers and professionals. A modular design must fit existing easements, utility clearances and the block's development controls rather than being assessed only by floor area.
Preparation
Documents to prepare
These items help a council, certifier or planning professional understand the proposal. The exact submission set depends on the site and pathway.
- Crown lease, deposited plan and current property information
- Site plan showing boundaries, easements, setbacks and existing development
- Floor plans, elevations, shadow information and proposed use
- DA-exemption assessment or development application material
- Bushfire, heritage, tree, drainage or engineering material where relevant
- Manufacturer drawings and certification evidence for building approval
Common delays
Resolve the expensive questions early.
Delay 01
DA exemption assumed too early
Exempt development must satisfy every general and specific criterion. A failed control can require an exemption declaration or DA.
Delay 02
Lease controls overlooked
Permitted use and development are affected by the crown lease as well as the Territory Plan.
Delay 03
Solar and neighbour information late
Building envelopes, solar access, shadow material and adjoining-neighbour information can delay an otherwise straightforward dwelling pathway.
Delay 04
Building approval treated as automatic
DA exemption does not remove NCC, structural, energy, servicing, inspection and building-certifier requirements.
Official starting points
Confirm the current requirements
Rules change and local interpretation matters. Use these government resources, then confirm the current pathway for the property.
Sources supporting this guide
- ACT Planning - single dwellings
Supports: DA-exempt criteria, neighbour information and building approval
Last checked 1 August 2026
- ACT Planning - check if you need a DA
Supports: general and specific exempt-development checks
Last checked 1 August 2026
- ACT Planning - check if you need a building approval
Supports: building approval and NCC requirements
Last checked 1 August 2026
- ACT Planning - complying with a development approval
Supports: secondary-residence subdivision restriction
Last checked 1 August 2026
General information only; not legal, planning, building or certification advice.
ACT questions
Frequently asked questions
Does a modular home need a DA in the ACT?
Answer
Not always. Some single-dwelling development can be DA exempt when every general and specific criterion is met. A DA is required when the proposal does not qualify, and building approval will usually still be needed.
Can a secondary residence be separately titled in the ACT?
Answer
ACT planning guidance states that a block with a primary dwelling and secondary residence cannot be subdivided through the Planning Act or Unit Titles Act pathways.
Does DA exemption remove the need for building approval?
Answer
No. Building approval, NCC compliance, inspections and completion documentation are separate from development approval.
What property information should be checked first?
Answer
Start with the crown lease, zone and development controls, easements, building envelope, solar access, heritage or environmental constraints and utility locations.
Where ModuHaus helps
ModuHaus can help organise your intended use, product fit, site access, early service questions and the information needed for a productive planning conversation. Formal classification, planning eligibility, permits, certification and technical compliance must be confirmed by the relevant council, certifier, building surveyor or qualified consultant.
Preparation checklist
Download a practical list of property, site, product and service information to gather before contacting council.
Download checklistACT project planning
Prepare the site questions before you narrow the product conversation.
Share your intended use, property context and access details so ModuHaus can help identify the next questions to confirm.