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Granny flat rules in NSW (2026): approvals, build rules and importing
A factory-built granny flat still has to be approved, certified, installed by a licensed builder and imported without surprises. Here is what applies in New South Wales in 2026, with the official sources.
What approval do I need?
In NSW, a granny flat is a "secondary dwelling". It is approved in one of three ways:
- Complying development: a complying development certificate (CDC), issued by your council or a registered certifier, when every standard of Schedule 1 of the State Environmental Planning Policy (Housing) 2021 is met.
- Development application: lodged with your council, when one of those standards is not met.
- Manufactured home: for a home delivered in one or more finished major sections, council approval to install a manufactured home under section 68 of the Local Government Act, with a development application where the local planning rules require one (NSW practice note, 1 July 2026). A manufactured home must be self-contained, with a kitchen, bathroom, bedroom, living area, toilet and laundry facilities.
Does my block qualify for complying development?
| Standard | Rule |
|---|---|
| Zone | Residential, other than R5 |
| Lot size | At least 450 m² |
| Granny flat size | No more than 60 m² of floor area |
| Dwellings on the lot | One principal dwelling plus one granny flat, with no subdivision |
| Parking | No additional car space required |
| Bushfire | Not available on land at the highest bushfire attack levels |
Frontage, setbacks and height limits also apply, and your certifier checks them against your block (NSW Planning, secondary dwellings).
Our Yard 37 has 35.2 m² of floor area (37.2 m² overall), well under the 60 m² limit, and our Yard 57, with about 54.3 m² of floor area (56.7 m² overall), is under it too.
Can the Yard 37 be approved?
Not as currently specified, whichever pathway applies: its rooms are 2.26 m high, under the 2.4 m minimum for habitable rooms (NCC 2022, Housing Provisions 10.3), and it has no laundry, which a manufactured home must include. We are specifying an Australian version with 2.4 m ceilings, a laundry and a cooktop. Nothing is payable to us until that version is confirmed and your council or certifier confirms in writing that it can be approved on your block.
Our guide to expandable granny flats in NSW explains each rule, pathway by pathway.
Who signs off the work?
On the building pathway (CDC or DA), you appoint a principal certifier before work starts, who inspects at key stages and decides on the occupation certificate.
On the manufactured home pathway (section 68), there is no principal certifier and no occupation certificate: the council approves the installation, relying on a structural engineer's certificate and a compliance plate on the home.
Approval for your block rests with your council or certifier, not with us.
What is changing for prefabricated homes?
The Building (Approvals and Practitioners) Act 2026, passed on 4 August 2026, will remove the term "manufactured home" and the approval under the Local Government Act to install one, and create a certification pathway for prefabricated building work. Most of it has not commenced: until the relevant parts commence, the existing approval processes continue to apply (NSW Planning, updated 22 September 2026).
Which building rules apply?
What class of building is a granny flat?
Under the National Construction Code, a dwelling is a Class 1a building; Class 10a is reserved for non-habitable buildings (NCC, Part A6).
The term "granny flat" does not appear in the code: your certifier decides the classification. A granny flat approved as a building must meet the NCC, including 2.4 m in habitable rooms; a manufactured home must meet the design rules of the 2021 regulation, which also require 2.4 m.
Which edition of the code?
NCC 2022 (Amendment 2) applies in NSW in 2026. NCC 2025 takes effect in NSW on 1 May 2027.
How does a factory-built unit show it complies?
Materials and products must be fit for purpose. The NCC lists the evidence it accepts (NCC, Part A5):
- a CodeMark certificate (a voluntary scheme);
- a Certificate of Accreditation;
- a certificate from a certification body;
- a report from an accredited testing laboratory;
- a certificate from an engineer or other qualified person;
- other documentary evidence.
This is the file we put together for your certifier or council. For a manufactured home, the council also relies on a structural engineer's certificate and a compliance plate on the home, which we supply.
Which electrical and plumbing fittings are accepted?
Electrical
NSW is not part of the national Electrical Equipment Safety System. Declared electrical articles sold in NSW must carry an approval recognised in NSW; a European CE mark is not accepted (NSW electrical approval schemes).
That is why our units are fitted with switches, sockets and switchboards carrying Australian approval marks recognised in NSW. Interconnected smoke alarms to AS 3786 are supplied and pre-wired.
The wiring is done at the factory to AS/NZS 3000. Before connection, the builder's licensed electrician inspects and tests it and issues the Certificate of Compliance for Electrical Work (CCEW).
Plumbing
WaterMark certification is mandatory for products on the WaterMark Schedule. A licensed plumber cannot install a listed product without it (ABCB, WaterMark).
Since 1 May 2026, plumbing products under a WaterMark licence can only be made if they are Lead Free WaterMark certified; existing certified stock may still be installed until 1 May 2028 (ABCB, Board meeting 2025-5). We check every certificate before you order.
What about BASIX and coastal blocks?
If your granny flat is approved as a building, thicker wall panels give more headroom for your BASIX certificate. The Premium finish has 100 mm EPS panels, and PU or rock wool panels are available in 75 or 100 mm. BASIX does not apply to a manufactured home.
Near the coast, the option of a salt-resistant fluorocarbon (PVDF) coating on the steel frame extends its service life.
Importing from China: what should I check?
Three checks come first:
- Asbestos: importing goods that contain asbestos is prohibited, and the importer carries the responsibility. A supplier's "asbestos-free" declaration is not enough: Border Force accepts test reports from laboratories recognised through NATA, on samples from the actual shipment (Australian Border Force, asbestos). Our materials are tested by a NATA-recognised laboratory, and you receive the reports.
- GST and duty: as the importer, you pay GST when the unit clears customs. A certificate of origin under the China–Australia Free Trade Agreement (ChAFTA) gives access to the preferential duty rate.
- Claims: under the Australian Consumer Law, claims such as "certified" or "complies with Australian standards" must be backed by evidence. Ask for the documents, not the words.
Our guide to importing a granny flat from China details each check: test reports, electrical approvals, WaterMark, GST and duty, biosecurity and inspection before shipping.
How is it delivered and installed?
How does it get onto my block?
In metro Sydney, truck and crane are included. The crane sets the unit on the footings built by the builder named in your quote.
Before we quote, we check access: street width, driveway, gates, slope, power lines and where the crane will stand.
Who installs it?
The licensed NSW builder named in your quote builds the footings, fixes the unit and expands it, and its licensed trades make the connections, under its own contract with you. We deliver the unit and supply the documents your certifier or council needs.
We are appointing our builder partners in Sydney. Your quote names the builder, with its contractor licence number and Home Building Compensation details, and its price for your block.
In NSW, constructing a secondary dwelling needs a building licence: the "prefabricated metal-framed additions" licence is not enough (NSW Government). Electrical, plumbing and drainage work needs a licence whatever its value.
Residential building work over $20,000 must be covered by Home Building Compensation insurance. The builder's deposit is capped at 10%: check its certificate before you pay it.
| Step | Who |
|---|---|
| Approval: CDC, development application or section 68 approval | Your council, or a registered certifier for a CDC |
| Approval file and site works: footings, tie-down, expansion, connections, certificates | The licensed NSW builder named in your quote, under its own contract with you |
| The unit, delivery and crane placement (metro Sydney), product documents | Lodgeyard |
| Inspections and occupation certificate (building pathway only) | Your principal certifier |
What does the price include?
Turnkey from AUD 137,000 for the Australian version of the Yard 37 (2.4 m ceilings, a laundry and a cooktop, which we are specifying with the factory), in Standard finish on a standard metro Sydney block, GST included. Council contributions, from nil to about AUD 20,000 depending on the council, are extra.
| Part | Who | Amount |
|---|---|---|
| The Yard 37, delivered to your block by truck and crane | Invoiced by Lodgeyard | AUD 68,700 |
| GST and import charges | Paid by you at the border, as the importer | About AUD 7,900 |
| Certifier and council approval fees | Paid by you directly to them | About AUD 4,900 |
| Approval file, footings and tie-down certified by an engineer, expansion of the unit, plumbing, drainage and electrical connections, certificates | The licensed NSW builder named in your quote, under its own contract with you | About AUD 55,500 |
| Turnkey price, GST included | AUD 137,000 |
- A standard block is level, at least 450 m², outside bushfire, flood and heritage areas, with truck and crane access and the house services within 15 m.
- Metro Sydney means the 30 Sydney metropolitan councils: Greater Sydney except the Blue Mountains, Hawkesbury, Wollondilly and the Central Coast. Elsewhere, delivery is quoted.
- Premium finish: quoted in writing.
Your written quote lists every item, who is paid what, what is and is not included, and the GST and import costs paid at the border. Nothing is payable to us before the Australian version is confirmed and your council or certifier confirms in writing that it can be approved on your block.
Our guide to granny flat costs in Sydney explains each part of a turnkey price, council contributions and the builder's deposit.
What are my rights if something is wrong?
Under the Australian Consumer Law, your rights depend on how serious the failure is:
| Failure | Your rights |
|---|---|
| Major failure | Replacement or refund, and compensation for any other reasonably foreseeable loss |
| Minor failure | Repair or replacement |
Any written warranty adds to these rights.
For the site works, the builder named in your quote is responsible: its work is covered by the statutory warranties of the Home Building Act 1989 (6 years for a major defect, 2 years for other defects) and by its Home Building Compensation cover.
What should I check before I order?
- Your zone, lot size, frontage and bushfire level, checked with a certifier: complying development, development application or section 68 approval?
- The Australian version of the unit (2.4 m ceilings, a laundry and a cooktop), confirmed in writing in your quote.
- The builder named in your quote: check its contractor licence on the NSW Government licence check and its Home Building Compensation certificate before you pay its deposit.
- Truck and crane access to your block: street width, driveway, gates, slope, power lines and crane position.
- Asbestos test reports from a NATA-recognised laboratory, on your shipment.
- Australian electrical approvals and WaterMark certificates for the fittings.
- A written quote that shows who is paid what, what is included, the delivery, and the GST and import costs paid at the border.
Frequently asked questions
Is the Yard 37 small enough for complying development?
At 35.2 m² of floor area (37.2 m² overall), the Yard 37 is well under the 60 m² limit for a NSW granny flat. But the unit as currently specified cannot be approved yet, whichever pathway applies: as a building, the National Construction Code requires 2.4 m in habitable rooms, and the Yard 37 has 2.26 m; as a manufactured home installed with council approval under section 68 of the Local Government Act, the regulation also requires 2.4 m, and a manufactured home must include laundry facilities, which the Yard 37 does not have.
We are specifying an Australian version with 2.4 m ceilings, a laundry and a cooktop. Nothing is payable to us until that version is confirmed and your council or certifier confirms in writing that it can be approved on your block. Your zone, lot size and bushfire level then decide whether complying development applies.
Does Lodgeyard approve my granny flat?
No. Approval for your block rests with your council or a registered certifier. We put together the product documents your certifier or council asks for.
Is a CE mark enough for the electrical fittings?
No. In NSW, declared electrical articles need an approval recognised in NSW, and a European CE mark is not accepted. Our units are fitted with switches, sockets and switchboards carrying Australian approval marks recognised in NSW.
Are footings and connections included?
Yes, in the turnkey price on a standard metro Sydney block. They are built by the licensed NSW builder named in your quote, under its own contract with you, and you pay the builder directly. Council contributions are extra.
General information, based on official sources read in October 2026 and last updated on 26 October 2026. It does not replace advice from your certifier, your council or a lawyer. Planning rules change: check the current version before you commit.