Mixed-Use Apartment Conveyancing Sydney: Why BMC Records Matter
Before buying a mixed-use Sydney apartment, review BMC records for levies, defects, insurance and disputes that could affect costs, upkeep and ownership duties.

In a Sydney mixed-use building, the apartments are often only one part of a larger structure. Lifts, car parks, fire systems and building insurance may be controlled by a building management committee under a registered strata management statement, not by the residential owners corporation alone. That committee sets its own budget and divides costs with retail or commercial owners. A conveyancing review limited to the residential scheme's records can miss how those shared costs are set, challenged and changed.
The Building Above the Strata Scheme
Across Sydney, apartments increasingly sit above supermarkets, gyms, childcare centres, offices and shopfronts. Green Square, Parramatta, Chatswood, Rhodes and the Inner West corridors include many podium towers where the residential lots occupy the upper levels and other owners hold the ground floor and part of the basement.
Legally, these buildings are often divided first into stratum lots, with the apartments forming a strata scheme within one of them. NSW Land Registry Services explains that a strata management statement sets out the management and operation of a building where only part of it is subdivided by a strata scheme, and that every part strata development must have one. The statement regulates owners and occupiers across the whole building, not just within the apartment scheme.
The body that runs it is the building management committee, or BMC. Netstrata's Building Management Committee Guide describes it as the "upper tier" of management. Decisions that affect only one component stay with that component's owners corporation. Decisions about shared facilities are made by the BMC, where each entity sends a representative.
For a buyer, that creates a second layer of governance that sits outside the residential scheme's own records.
Strata Management Statement or Building Management Statement
The two terms are often used interchangeably in listings and agent conversations, but they come from different legislation.
Strata Management Statement (SMS)
- Where it applies: A building where part of it is subdivided by one or more strata schemes.
- Governing law: Strata Schemes Development Act 2015, Part 6 and Schedule 4.
Building Management Statement (BMS)
- Where it applies: A building divided into separate non-strata parts.
- Governing law: Conveyancing Act 1919, Division 3B of Part 23.
The Registrar General's building management statement fact sheet notes that a BMS operates as a deed binding each owner of part of the building, now and in the future, along with mortgagees and lessees.
When part of that building is later strata subdivided, a registered SMS replaces the BMS. LRS also records that an existing BMS can be taken to be the SMS where it meets the requirements.
In practice, a buyer of a mixed-use apartment in Sydney may find either document on title, and both create a building management committee.
Where the Residential Records Go Quiet
A standard strata search, together with the strata information certificate and the residential owners corporation's minutes, financial statements and 10-year capital works fund plan, remains essential. In a mixed-use building, however, those records often show the result of BMC decisions without the reasoning behind them.
Netstrata's guide makes the point directly. A residential scheme within a BMC funds its BMC levies through a line item in its own administrative fund budget. The example given is an owners corporation that contributes $50,000 a year to the BMC and raises that money through its administration fund.
That means a buyer reviewing the residential budget may see one large figure for "BMC contributions" without seeing:
- Which shared facilities that figure covers.
- What percentage of each facility the residential scheme carries.
- How those percentages were calculated.
- Whether major works are planned on shared plant or the façade.
- Whether another owner in the building has disputed the allocation.
The residential levy shown on the certificate is accurate. It simply does not explain itself.
Elyment has previously examined how strata records gaps can delay a Sydney apartment purchase. In a mixed-use building, the gap can sit one level higher, in a committee whose records are kept separately.
How Shared-Facility Costs Are Divided
The heart of any SMS is its schedule of shared facilities. Schedule 4 of the Strata Schemes Development Act requires a strata management statement to provide for the fair allocation of the costs of shared expenses and a process to review that allocation.
Netstrata explains that the register is generally prepared by a quantity surveyor, who reviews the building plans, lists each shared service and selects a method for dividing its cost.
1. Gross floor area
- How it works: Each stratum lot's share of total floor area.
- Typical items: Fire services and hydraulic services.
2. Assessed benefit or estimated usage
- How it works: Estimated population, intended use or consumption.
- Typical items: Electricity and lift usage.
3. Car space proportion
- How it works: Each lot's share of total car spaces.
- Typical items: Garage doors, visitor parking and car park cleaning.
4. Number of lots
- How it works: Each stratum lot's share of the total lot count.
- Typical items: Strata management, building management, cleaning and pest control.
5. Replacement value
- How it works: Each lot's share of the building's replacement value.
- Typical items: Building insurance.
Netstrata's sample register shows how far apart the results can be. In its illustrative supermarket, retail and residential building, the residential scheme carries:
- 75% of a sewer pump station.
- 62% of driveways and ramps.
- 55% of fire stairs and essential fire services.
- 70% of insurance.
The same guide shows a $5,000 lift budget split 10%, 20% and 70%, leaving the residential scheme with $3,500.
The analytical point for buyers is that these percentages were usually set when the building was designed. Retail tenancies change, a supermarket can expand its loading hours, and a gym may bring hundreds of daily visitors through a shared lift.
Elyment's analysis of who pays for car stacker repairs in strata shows how quickly shared plant becomes a cost question. In a BMC building, the answer sits in the shared facilities schedule.
Budgets, Meetings and the Representative Problem
A BMC sets its own annual budget, then levies each member according to the schedule. Netstrata notes that an annual meeting typically sets the budget and confirms insurance and audit matters, with further meetings for operational issues as the statement requires.
Where the statement is silent, implied provisions apply. Both the Registrar General's fact sheet and Netstrata summarise these as:
- At least one meeting a year.
- At least seven days' notice.
- A quorum of a majority of members.
- Decisions by a majority of members present and voting.
Two structural features matter for residential owners:
- Voting is by entity, not by apartment. A residential scheme of 150 lots may hold one seat at the BMC table, alongside a single retail or supermarket owner. Some statements move certain matters to a percentage-based vote, which can change the balance again.
- The residential voice is a representative. Netstrata notes that a subsidiary strata scheme appoints its representative by special resolution, and that the representative ordinarily seeks voting instructions from the strata committee.
For conveyancing, this means the residential owners corporation's minutes may record that its representative was instructed to vote against a budget or a cost reallocation, without recording whether that vote succeeded. The BMC minutes are where the outcome is recorded.
When Shared Costs Become Disputes
Netstrata observes that the parties in a BMC often want different things. A residential owners corporation may prioritise quiet enjoyment and lower costs, while commercial and retail owners may prioritise trading hours, signage and patronage. That tension shows up in budgets, security settings, loading dock rules, façade works and lift maintenance.
Disputes also follow a different path. According to the Netstrata guide, a management statement will normally set out its own dispute process, often involving:
- A meeting.
- A formal dispute notice.
- A further attempt at resolution within a set timeframe.
- A binding determination by an independent expert or arbitrator.
Changes to the statement itself are formal. An amendment generally needs a special resolution of each strata scheme in the building and must be recorded with NSW Land Registry Services.
For a buyer, an active dispute can affect future contributions, legal costs funded through the administrative fund, and the timing of shared works. None of that is necessarily visible from the residential certificate alone.
The 2027 Mixed-Use Reforms
The NSW Government's guide to strata law changes lists mixed-use building reforms among the changes planned to start in 2027.
They include:
- Reviewing shared-facility cost allocations: Making it easier to review and update allocations where existing arrangements are no longer fair, such as when one part of the building starts using the lifts much more heavily.
- Building management committee agent terms: A maximum three-year term for agents appointed by building management committees.
- Default quorum requirements: Establishing default quorum requirements for BMCs.
- Standardised record-keeping: Introducing more consistent BMC records, including a register of building-related contracts.
- Supreme Court authority: Clarifying the Supreme Court's authority to direct amendments to strata management statements.
The direction is clear. Cost allocation in mixed-use buildings is expected to become more contestable, and BMC records more consistent.
Until those changes start, the quality and accessibility of BMC records will vary from building to building. A buyer purchasing now may also be buying into a reallocation review that starts after settlement.
What a Mixed-Use Review Should Cover
A structured building management committee review before exchange typically works through the following sequence:
- Confirm the structure. Check the title and plan for a registered SMS or BMS, and identify each stratum lot and its use.
- Obtain the statement and its shared facilities schedule. Note the residential percentage for the largest cost items, including lifts, fire services, car park, façade and insurance.
- Request the BMC's current budget and recent financial statements. Compare the BMC levy against the line item in the residential administrative fund.
- Read two to three years of BMC minutes. Look for cost reallocation motions, major works on shared plant, insurance changes and dispute notices.
- Cross-check the residential minutes. Look for instructions given to the BMC representative and any special resolutions concerning the statement.
- Check the architectural code and building rules. Netstrata notes that statements often regulate window treatments, outdoor furniture, signage and occupant conduct, and subsidiary by-laws must not contradict them.
- Ask who holds the BMC records. Identify the BMC's secretary or managing agent, which may differ from the residential strata manager.
For owners planning works after settlement, the same records matter. Shared-facility rules on loading docks, lift bookings and building hours can shape any later renovation, flooring replacement or fit-out programme. An apartment in a building with a dominant retail neighbour is a different operating environment from a standalone residential block.
Elyment's strata conveyancing in Sydney considers the residential scheme alongside the building structure around it.
Where a purchase involves the retail or commercial component, commercial conveyancing in Sydney applies the same review from the other side of the BMC table.
Buyers comparing documents can also read why the capital works plan matters before exchange.
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The Bigger Picture
Sydney's housing growth is increasingly vertical and mixed. That brings convenience, but it also brings shared infrastructure owned and funded by parties with different priorities.
For residential buyers, the strata scheme is only part of the picture. The building management committee decides how much of the lifts, car park, fire systems and insurance the apartments pay for.
With NSW reforms set to make those allocations easier to revisit, reading the BMC's records before exchange is becoming part of buying well.
Sources and Further Reading
Legislation and Government Guidance
- NSW Land Registry Services: Strata Management Statements
- Registrar General: Building Management Statement Fact Sheet
- NSW Government: Guide to Strata Law Changes for Strata Committees and Owners
Industry Reference
Related Elyment Articles
- How Can a Strata Records Gap Delay a Sydney Apartment Purchase?
- Sydney Car Stacker Costs: Who Pays for Repairs in Strata?
- Why Should Sydney Apartment Buyers Read the Capital Works Plan Before They Fall in Love With the View?
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