By Paul Wenham · General information, not professional advice
Partial Occupation Certificates in NSW: Cases, Risks and Traps
This focused companion covers staged occupation, excluded works, responsibility and different legal clocks. For the broader distinction between occupation certificates, planning approvals and actual compliance, start with the occupation-certificate and DA guide.
Evidence and scope: The following cases, deadlines and statutory summaries are from the supplied research dated 31 October 2026, not independently verified findings or professional advice. Commercial certificates illustrate staging, not the frequency of residential defects. The Asquith account is a parliamentary submission, not a court finding. Historical guidance and council-specific expectations are not uniform statewide rules. Have your solicitor or certifier confirm the applicable regime, dates and current requirements before acting. The source text uses both “Alando” and “Alamdo”; its linked case commentary names Alamdo.
Bottom line
A partial OC lawfully lets people occupy the named part of an unfinished building, but everything outside that description stays unfinished, uncertified and someone's unpaid job. The whole-building OC must follow within 5 years of the first partial OC, and in a strata building that duty can fall to the owners corporation if the developer does not deliver.
- Read the "description of part" and the exclusions before anything else; occupying anything outside them is an offence.
- Several legal clocks start at different OCs: the strata bond inspections at the first (partial) OC, Home Building Act warranties for strata buildings generally at the whole OC.
- The real risks sit in what is outstanding: unmet consent conditions, whole-building fire safety, common property, public works and later stages.
What a partial OC is
A partial OC authorises people to occupy and use only the part of a building it names, while the rest is still being finished. It is a permission to occupy, not a statement that the whole development is complete or compliant.
Legal basis. Section 6.9 of the Environmental Planning and Assessment Act 1979 lists when an OC is needed, including occupying a partially completed new building (staged occupation) and changing the use of part of such a building, such as a shop fit-out in a staged release (NSW Planning OC FAQ). The detailed rules sit in the EP&A (Development Certification and Fire Safety) Regulation 2021.
Conditions for issue. The certifier can only issue a partial OC for occupiable parts of a building, and only if:
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the incomplete building work does not pose a health and safety risk to the occupants;
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any preconditions the development consent attaches to an OC for that part have been met.
The certifier must clearly identify, in the certificate itself, which portion of the development it covers. Multiple partial OCs can be issued as further stages finish.
The whole-building OC is still required. Once all work is complete, a further OC must be obtained to show the building complies with the consent and its remaining conditions. A partial OC carries a statutory condition that the OC for the whole building be obtained within 5 years of the first partial OC (s 53 of the 2021 Regulation), so buildings are not occupied indefinitely under a partial OC.
Interim vs partial. "Interim" and "final" OCs are the old terms. They still apply to development consents and OCs issued before 1 December 2019; for newer consents the language is "partial" (part of a building) and "whole" (the whole building). Many people, and many contracts, still say "interim".
What it does not do. A partial OC does not certify the excluded parts, does not end the developer's obligation to finish the consent conditions, and (for strata buildings) does not by itself start the Home Building Act warranty clock (see Timeframes).
When partial OCs are issued
Partial OCs turn up wherever part of a project is ready before the rest: staged apartment buildings, mixed-use towers, warehouses, estates and, less often, houses. The certificate's "description of part" is the single most important line: anything not named there is not authorised for occupation.
| Case type | What is typically excluded or still outstanding | Example from the record |
|---|---|---|
| Staged apartment or strata buildings (Class 2) | Some units or floors, a second tower, common facilities, external works | Cabramatta: an interim OC excluded Units 1 and 10 and "external works"; the final OC followed about 7 weeks later (Zhang case summary) |
| Mixed-use buildings | Retail or commercial shells, later shop fit-outs (each fit-out that changes use needs its own OC) | NSW Planning gives shop fit-outs in a staged release building as a standard case (OC FAQ) |
| Case type | What is typically excluded or still outstanding | Example from the record |
|---|---|---|
| Industrial and logistics | Lifts to offices, consumer mains, racking, automation equipment, external civil works by authorities | Oakdale West OC1 excluded office lifts, consumer mains and partial racking (certificate); Aspect OC3 covered office fit-out and partial racking only (certificate) |
| Estates and staged infrastructure | Later hardstand, roads or building stages | Oakdale East OC1 covered only Stage 1 hardstand and stormwater (certificate) |
| Residential flat buildings with public works unfinished | Footpaths, kerbs, nature strips, roadworks, driveways | Asquith: OCs issued before nature strip and roadworks were done; residents used a temporary driveway and the issue ran for about two years (Parliament submission) |
| Houses and small developments | Garage, paved driveway, landscaping, fences, painting, street number | NSW guidance lists these as items that may reasonably be finished after an OC (Planning circular PS 05-001, archived); Tweed Council expects outstanding matters fixed within 6 months of occupation (Tweed) |
What cannot be outstanding: anything that makes the occupied part unsafe. NSW guidance has long said a staged OC must not issue if ongoing construction noise or dust, or outstanding fire safety issues, would make the building a hazard to its new occupants.
What is typically outstanding, and the risk each carries
The risk of a partial OC is rarely the occupied part itself; it is that the excluded items never get finished, get finished badly, or quietly become the owners' problem. Sorted roughly from highest to lowest risk:
| Outstanding item | What can go wrong | What to ask for |
|---|---|---|
| Unmet conditions of development consent | A whole OC cannot issue until every condition is met. If the developer walks away, the owners may be left to satisfy them, because the person with the benefit of the consent (including an owners corporation) is responsible for the whole OC (NSW certifier guidelines) | A schedule of every consent condition still open, with owner and date |
| Fire safety for the whole building | An interim fire safety certificate covers only the measures for the completed part; a final fire safety certificate must later cover every measure on the schedule (NSW form guidance). Systems that span both parts (alarms, sprinklers, egress) are where gaps appear | Copies of the interim fire safety certificate and fire safety schedule; how occupied areas are separated from construction areas |
| Other units, floors or towers still under construction | Noise, dust, trades in shared corridors, site security, restricted access; later-stage defects may surface after you have settled | The construction staging plan and expected date for the whole OC |
| Outstanding item | What can go wrong | What to ask for |
|---|---|---|
| Common property and amenities (lifts, car park, pool, gym, rooftop, landscaping) | Facilities you paid for are unavailable; incomplete or defective common property becomes the owners corporation's to chase | A list of excluded common property with completion dates in the contract or by-laws |
| Lifts and access routes | Accessibility and moving-in problems; a lot is only useful if the route to it is covered | Confirmation the OC covers the lot and every part reasonably needed to reach it |
| Public domain and external works (footpaths, kerbs, nature strips, roads, driveways) | Can drag on for years once residents are in; councils often hold a cash bond or bank guarantee for these (Wollongong policy) | Whether council holds security and for how much |
| Services and utilities (permanent power, consumer mains, stormwater, on-site detention) | Temporary connections, outages, or later disruption when final connections are made | Which services are temporary and the cut-over date |
| BASIX commitments | A BASIX completion receipt is not required for a partial OC application, so energy and water commitments may not be verified until the whole OC (NSW certifier guidelines) | Evidence the commitments for your lot have been installed |
| As-built documentation (Class 2) | Varied designs must be lodged within 90 days after the final OC; until then the as-built record is incomplete (Planning Portal guide) | The building compliance declaration and regulated designs lodged so far |
| Cosmetic items (painting, fencing, street numbers) | Low safety risk, but easy to forget once people move in | A written punch list with a completion date |
Timeframes
The deadlines that matter run from two different starting points: the first partial OC and the later whole OC. Mixing them up is the most common way owners lose a claim or miss a window.
Different deadlines run from the first partial OC and from the whole OC
Key NSW deadlines in order, not to scale. Apartment-only steps are marked.
| Timeline | Event |
|---|---|
| 6 to 12 months before | Expected completion notice (apartments) — Developer notifies Building Commission NSW; an OC audit may follow |
| Before applying for OC | Bond, declarations and notices in place — 2% strata bond, builder's compliance declaration, 14 days' notice to builder |
| First partial OC | Occupation of the named part begins — The 5-year whole-OC deadline and the strata bond (SBBIS) clock start here |
| 14+ days pre-settlement | Vendor serves the OC on off-the-plan buyers — It must cover the lot and the parts of the building needed to reach it |
| Within 12 months | SBBIS building inspector appointed (apartments) — Developer appoints the independent inspector |
| 15 to 18 months | SBBIS interim inspection and report — Defects missed here generally cannot be added at the final report |
| 21 to 24 months | SBBIS final inspection and report — Bond pays for unrectified defects, usually 2 to 3 years after completion |
| By 5 years | Whole-building OC due — Replaces every partial OC; all consent conditions must be met first |
| Whole OC + 90 days | As-built designs lodged (apartments) — Builder lodges varied regulated designs or confirms there were none |
| Whole OC + 2 or 6 years | Home Building Act warranties end (strata) — 2 years for most defects, 6 for major defects; separate buildings can differ |
SBBIS months count from the first OC, including a partial one; the warranty and as-built deadlines count from the whole OC. Council-specific rules can add more (Tweed, for example, expects outstanding items fixed within 6 months of occupation). Sources:
expected completion notice, SBBIS stages, certifier guidelines, post-OC declaration, Zhang case.
Responsibilities
The developer (as the person with the benefit of the consent) carries the duty to reach a whole OC, but that duty can pass to the owners corporation in a strata building, which is the outcome owners most need to guard against.
| Party | Main responsibilities around a partial OC |
|---|---|
| Developer / consent holder | Obtain the whole OC within 5 years of the first partial OC. For apartment buildings: give the expected completion notice 6 to 12 months before applying for any OC, and lodge the 2% strata building bond before applying (Building Commission; SBBIS glossary). Notify the building practitioner at least 14 days before applying, and within 7 days after (MinterEllison guide). Appoint the SBBIS building inspector within 12 months of completion |
| Owners corporation | Becomes responsible for the whole OC if the developer does not obtain it (NSW certifier guidelines). Gives SBBIS inspectors access; tracks defect claim deadlines |
| Builder / registered building practitioner | Lodges the building compliance declaration before the OC application (the certifier cannot issue an OC without it); confirms or lodges varied as-built designs within 90 days of the final OC (Building Commission). Rectifies defects found under SBBIS |
| Principal certifier | The only person who can issue the OC. Must be satisfied the part is suitable for its BCA class, consent preconditions are met, incomplete work poses no health and safety risk, and must name the part covered. Must send the OC and supporting documents to council within 2 days (NSW certifier guidelines). Certifiers act in the public interest, not for the developer |
| Party | Main responsibilities around a partial OC |
|---|---|
| Building owner (fire safety) | Issues the interim, then final, fire safety certificate; displays it with the fire safety schedule and sends a copy to Fire and Rescue NSW (Lake Macquarie) |
| Off-the-plan purchaser | Checks the OC served actually covers the lot and the access to it, and reads the exclusions before settling |
| Tenant / occupier | Occupies only what the OC covers; for a fit-out or change of use, obtains its own OC on time if the lease says so |
| Building Commission NSW | Receives expected completion notices, can audit before OC, and can make prohibition orders that stop any OC issuing for an apartment building; an OC issued in breach of an order is invalid (RAB Act s 9) |
| Council | Holds OC records and any security bonds for public works; can issue orders for unauthorised occupation or non-compliance |
Risks by stakeholder
Each party's exposure is different, and the biggest ones are timing risks rather than building risks.
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Off-the-plan buyers. A valid OC covering your lot and its access is what lets the vendor call on settlement; the contract implies a term that the vendor serves it at least 14 days before completion (NSW certifier guidelines). After settlement your leverage over the developer drops sharply, while common property, amenities and other stages may still be unfinished. Your lender values the property as it stands at settlement.
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Owners corporations. Inherit the obligation to get the whole OC if the developer does not, plus responsibility for chasing common-property defects. The SBBIS clock starts at the first OC, including a partial one, so the bond inspections may happen while later parts are still being built.
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Residents and tenants in occupied parts. Live beside a construction site; can only lawfully use what the OC names (a storage cage, car space or rooftop outside the description is not authorised).
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Commercial tenants. Lease commencement, rent and termination rights are often tied to an OC date. In Reece Australia v Alando Holdings [2026] NSWCA 175 a tenant tried to terminate a 10-year warehouse lease for a missed OC deadline, but its own inadequate BCA report caused the delay; the lease stayed on foot and the tenant owed about $1.55m in rent and outgoings (Sprintlaw summary).
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Developers and builders. Missing the 6-month expected completion notice, the bond or the compliance declarations can trigger a prohibition order that blocks every OC and every settlement. Unfinished items after a partial OC also delay release of council bonds and the builder's final payments.
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Insurers and lenders. A building occupied without a valid OC for the part in use can create insurance problems; NSW lawyers have long warned buyers to demand the OC before settling (Insurance News).
Common traps
Most problems come from assuming a partial OC means more than it does.
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Treating "OC issued" as "building finished". A partial OC certifies only the named part. Read the description of part and every exclusion note, such as "excludes external ancillary services, structures or civil works".
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Assuming the warranty clock started at the partial OC. For new strata buildings, Home Building Act completion is the OC for the whole building (s 3C(2)), so the 2-year and 6-year warranty periods usually run from the whole OC. Separate buildings that can be used independently can have separate dates (s 3C(3)). In Owners SP 93543 v Zhang (No 3) [2025] NSWSC 571 two linked blocks over a shared car park were one building, so the owners' claim was in time (Swaab). Some commentary says the reverse, so get advice and calendar the earliest possible date.
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Assuming every clock uses the same OC. SBBIS counts from the first OC, including a partial one; Home Building Act warranties for strata count from the whole OC; DBP as-built lodgement counts from the final OC. Diary each one separately.
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Losing track of the 5-year deadline. It runs from the first partial OC, not the last. If the developer is gone when it bites, the owners corporation is the one left to finish.
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Settling without checking access is covered. The OC must cover your lot and every part of the building reasonably needed to reach it.
6. Using areas outside the certificate. Moving into, storing goods in or trading from an excluded area is occupation without an OC, which is an offence.
7. Relying on bad online information. Several certifier and consultancy websites wrongly say interim or partial OCs are no longer available. Partial OCs remain lawful for consents granted from 1 December 2019; "interim" applies to older consents.
8. Letting a lease or contract deadline drift. An OC-based termination right will not help a party whose own delay caused the miss (Reece v Alamdo). Manage OC dates as contract deadlines.
9. Forgetting the money held as security. Council bonds for public works, and the 2% SBBIS bond, are only useful if someone chases them before release.
10. Not getting the documents at handover. Fire safety certificate and schedule, the OC with its list of documents relied upon, and the open-conditions list are much harder to obtain once the developer has moved on.
Practical checklist
Work through these before settling, signing a lease, or accepting handover of common property.
Get the paper
- The partial OC itself, including the "description of part" and the list of documents relied on
- Date of the first partial OC (sets the 5-year deadline and the SBBIS clock)
- Interim fire safety certificate and current fire safety schedule
- Development consent, with a list of conditions still open
- For apartment buildings: confirmation the strata bond was lodged and no prohibition order applies
- Any council security bonds for public or landscape works, with amounts
Check the coverage
- The OC covers your lot, its car space and storage, and the route to reach them
- Which common property, lifts and amenities are excluded, and when they will be finished
- Which services are temporary
Lock in the dates
- Expected date of the whole OC, written into the contract or lease where possible
- Diary: SBBIS interim inspection window (15 to 18 months after first OC)
- Diary: whole-OC deadline (5 years after first partial OC)
- Diary: 2-year and 6-year Home Building Act warranty dates, counted conservatively
Ask the direct questions
- Who is responsible if the whole OC is not obtained, and what security backs that?
- How are occupied areas separated from ongoing construction (fire, access, noise)?
- Will later stages be inspected before the SBBIS final report?
Sources and caveats
This is a general NSW guide, not legal advice; contracts, consent conditions and council practice vary, and some statutory sections are summarised rather than quoted. Developments with consents granted before 1 December 2019 may still run under the older interim/final regime.
Government and statutory
- NSW Planning: Occupation Certificates FAQ (2019)
- NSW Planning: Building and Subdivision Certification, Occupation Certificates guidelines for certifiers
- NSW Planning circular PS 05-001 (archived, historical guidance)
- Building_Commission NSW: Lodging an expected completion notice
- Building_Commission NSW: Building_practitioner obligations
- SBBIS glossary and SBBIS Stage 3
- Residential Apartment Buildings (Compliance and Enforcement Powers) Act 2020, s 9
- Conveyancing (Sale of Land) Regulation 2022
- Planning Portal: post-OC declaration guide
- Tweed Shire Council: inspections and OCs
- Lake Macquarie Council: interim fire safety certificates
- Wollongong_Council: bank guarantees for subdivisions and development
Cases and commentary
Example partial OCs
Related checks
Referenced sources
- OC1 · NSW Planning: Occupation Certificates FAQ (2019)
- OC2 · Swaab: Owners SP 93543 v Zhang (No 3) [2025] NSWSC 571
- OC3 · Oakdale West OC1
- OC4 · Aspect OC3
- OC5 · Oakdale East OC1
- OC6 · NSW Parliament inquiry submission on premature OCs (2019)
- OC7 · NSW Planning circular PS 05-001 (archived, historical guidance)
- OC8 · Tweed Shire Council: inspections and OCs
- OC9 · NSW Planning: Building and Subdivision Certification, Occupation Certificates
- OC10 · (NSW form
- OC11 · Wollongong Council: bank guarantees for subdivisions and development
- OC12 · Planning Portal: post-OC declaration guide
- OC13 · Building Commission NSW: Lodging an expected completion notice
- OC14 · SBBIS Stage 3
- OC15 · SBBIS glossary
- OC16 · MinterEllison: DBP Act declaration process quick guide
- OC17 · Building Commission NSW: Building practitioner obligations
- OC18 · Lake Macquarie Council: interim fire safety certificates
- OC19 · Residential Apartment Buildings (Compliance and Enforcement Powers) Act 2020, s 9
- OC20 · Sprintlaw: Reece Australia v Alamdo Holdings [2026] NSWCA 175
- OC21 · (Insurance News)
- OC22 · Conveyancing (Sale of Land) Regulation 2022
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