Half of NSW's Strata Stock Was Registered Before 2000. The 1990s Boom Built the Smallest Schemes in the State.
NSW passed the Conveyancing (Strata Titles) Act in 1961. Sixty-five years later, 49,218 active schemes — 55.8% of the state — were registered before the millennium. And the decade that registered the most schemes registered the smallest ones.
Most conversations about NSW strata are conversations about new apartments. Cranes, towers, off-the-plan settlements, the defects debate. That is where the attention goes, and it is a reasonable place for it to go.
It is not where the schemes are.
We ran the registration year of every active strata scheme in NSW — 88,210 of them, holding 1,014,904 lots. The picture that comes back is older and smaller than the one the industry talks about. More than half the state's schemes have been standing since before 2000. Nearly a third have been standing since before 1990.
The stock is older than the conversation about it
49,218 active schemes were registered before 2000 — 55.8% of the state. 26,877 were registered before 1990, which is 30.5%. The oldest still-active registrations date to 1961, the year the Conveyancing (Strata Titles) Act (NSW) commenced — the statute that went on to serve as the model for strata and condominium law in other jurisdictions — and 1,074 schemes registered in that first four-year window are still on the register today.
Those pre-1990 schemes hold 296,163 lots between them. On UNDA's contract value model they represent roughly $156.8 million a year in management fees — a conservative estimate, and one built on lot counts rather than on any disclosed contract.
The 1990s registered the most schemes and the fewest lots per scheme
Here is the finding that surprised us. Scheme registrations peaked in the 1990s. Lot creation did not.
Average lots per scheme, by registration decade. All 88,210 active NSW strata schemes.
The 1990s registered 22,341 schemes — more than any other decade, by a wide margin — at an average of 7.8 lots each. The 2010s registered barely half that number of schemes, 12,746, and created more lots: 222,855 against 174,147.
Average scheme size falls from 15.2 lots in the 1960s to 7.8 in the 1990s, then climbs back to 17.5 in the 2010s. It is a U-curve, and each arm of it is a different building type. The 1960s and early 1970s were walk-up flat blocks converted or built to strata. The 1980s and 1990s were villas, townhouses, duplexes and small infill — the strata-titled backyard subdivision. The 2010s were towers.
Why the shape matters more than the totals
A portfolio of 1990s stock and a portfolio of 2010s stock are not the same business at different scales. They are different businesses.
At 7.8 lots, a scheme has a levy base that supports very little. Administrative overhead per lot is high, the committee is often three people, and there is rarely enough in the fund to absorb a surprise. At 17.5 lots the arithmetic changes, and above 50 it changes again.
The age split lands on the same line. 3,358 pre-1990 schemes carry 20 or more lots. That is 32.0% of every scheme in NSW at that size — so roughly a third of the state's larger schemes are also its oldest, which is precisely the population where capital works planning, remediation and building compliance obligations bite hardest.
The reverse is just as sharp. The bulk of the pre-1990 population is small: 23,519 of those 26,877 schemes sit under 20 lots. Old and small is a harder combination than old and large, because the same obligations arrive with a fraction of the levy base behind them.
What we would do with this
If you are building a growth plan, scheme count tells you how many contracts exist in a region and average lot size tells you what they are worth. Those two numbers move in opposite directions across the decades, and an LGA-level view separates them cleanly.
The concentrations are real. In North Sydney, 62.7% of active schemes predate 1990 and 79.4% predate 2000. Waverley runs 61.7% and 72.2%. Mosman 59.6% and 78.2%. Bayside 58.1%. Woollahra 55.9%. Northern Beaches 52.1%. These are not marginal skews — in North Sydney and Mosman, close to four schemes in five were registered last century.
A firm that knows which side of the U-curve a suburb sits on knows what its cost to serve will be before it quotes.
About UNDA Management
UNDA Management provides market intelligence for strata managers — 88,210 active NSW schemes mapped, every manager linked, every contract cycle tracked. Our sister product, UNDA Development, provides precedent intelligence for property developers and property planning consultants. Learn more at unda.management
