Conventional wisdom says a building with tribunal history is a red flag. Buyers avoid it. Prices suffer. But is that actually true? We cross-referenced 4.4 million NSW property sale records with 2,004 NCAT tribunal decisions to find out.
The answer surprised us. On average, a strata dispute barely moves the needle. But that average hides two very different stories — and understanding the difference could save you hundreds of thousands of dollars.
4.4M
Sales records analysed
88,069
Strata plans in NSW
675
Plans with NCAT disputes
−0.55%
Controlled avg. price effect
Controlling for suburb and building size
To isolate the effect of disputes, we bucketed every sale by suburb and building size (small: 1–10 lots, medium: 11–50, large: 50+), then compared dispute vs. non-dispute medians within each bucket. This gave us 157 controlled comparison groups covering 5,493 dispute sales and 71,048 non-dispute sales.
The result:
Weighted average price gap: −0.55%
After controlling for suburb and building size, dispute buildings sell for roughly half a percent less than comparable non-dispute buildings. On a $900,000 apartment, that's about $5,000. Barely more than a rounding error.
But that average is deceptive. It's like saying the average person has one leg in boiling water and one in ice, so on average they're comfortable.
Two very different kinds of dispute buildings
When we looked at individual buildings, the “average” dissolved into two distinct groups:
Damaged buildings
Structural defects, water ingress, combustible cladding. These buildings trade at massive discounts — 40% to 80% below their suburb median.
21 buildings < −50%
81 buildings −20% to −50%
Premium buildings
By-law disputes, renovation disagreements, cost apportioning. These buildings often trade above their suburb median — disputes are a sign of engaged governance, not dysfunction.
55 buildings +20% to +50%
76 buildings > +50%
The full distribution across 475 dispute buildings with enough sales data to be meaningful:
Price gap vs. suburb median (dispute buildings, 2020–2025)
Based on 475 dispute buildings with 3+ residential sales (2020–2025) in suburbs with 30+ total sales.
The distribution is roughly symmetric. Disputes alone don't predict whether a building will under- or overperform. What matters is why they went to tribunal.
The buildings where disputes really hurt
At the bottom of the distribution are buildings trading at catastrophic discounts to their suburb. These share a common pattern: large complexes with structural or construction defect disputes.
Worst-performing dispute buildings vs. suburb median
| Address | Suburb | Lots | Building | Suburb | Gap |
|---|---|---|---|---|---|
| 185–211 Broadway | Ultimo | 613 | $159K | $750K | −79% |
| 1–5 Bourke St | Mascot | 141 | $223K | $808K | −72% |
| 10 Brown St | Chatswood | 169 | $395K | $1.16M | −66% |
| 13 Waine St | Surry Hills | 177 | $359K | $952K | −62% |
| 243–271 Pyrmont St | Pyrmont | 563 | $516K | $1.26M | −59% |
Notice the lot counts: 613, 563, 177, 169, 141. These are all large complexes. The pattern holds across the data — when controlling for both suburb and building size, the worst price gaps are concentrated in large buildings in inner Sydney: Ultimo (−80%), Mascot (−73%), Chatswood (−65%).
The buildings where disputes don't matter (or help)
At the top of the distribution, some dispute buildings sell for multiples of their suburb median. These tend to be premium buildings where the tribunal dispute was about renovations, by-law enforcement, or cost allocation — not structural failure.
Best-performing dispute buildings vs. suburb median
| Address | Suburb | Lots | Building | Suburb | Gap |
|---|---|---|---|---|---|
| 93 Elizabeth Bay Rd | Elizabeth Bay | 57 | $8.35M | $935K | +793% |
| 184 Forbes St | Darlinghurst | 302 | $2.95M | $968K | +205% |
| 232–234 Campbell Pde | Bondi Beach | 18 | $4.3M | $1.42M | +203% |
| 43–45 North Steyne | Manly | 11 | $5.1M | $1.8M | +183% |
| 1 Carlton St | Chippendale | 40 | $2.66M | $760K | +249% |
An owners' corporation that goes to tribunal over a renovation dispute or a by-law breach may actually be a good sign — it means they're actively governing the building and enforcing standards. This is very different from a building that's in court because the facade is falling off.
Do prices dip around tribunal decisions?
We also looked at the timing. For buildings with NCAT decisions, how do sale prices behave before and after the decision date?
Median price relative to first tribunal decision
There's a small dip in the year around a decision — about 0.6% — but prices recover quickly. The market prices in disputes fast and doesn't impose lasting penalties unless the building has fundamental structural problems.
Bonus finding: older buildings command a premium
While analysing the data, we noticed something interesting about building age. The “filtering up” effect — older buildings tend to be in established, desirable suburbs — shows up clearly:
Median sale price by building era (2020–2025)
Residential sales only. This reflects location effects (older buildings sit in established suburbs), not a general premium for age.
Pre-1970 buildings trade at a 12% premium over post-2015 stock. Building size, by contrast, barely affects price once you control for location — the median for 1–10 lot buildings ($748K) is almost identical to 200+ lot complexes ($780K).
Where disputes are most common
Not all suburbs are equally litigious. The top dispute hotspots, measured as the percentage of strata plans with at least one NCAT case:
Suburbs with 50+ strata plans. Based on published NCAT decisions only.
Inner Sydney dominates. Nearly 15% of all strata plans in the Sydney CBD have been involved in at least one published tribunal decision. Pyrmont and Chippendale follow, both areas with large post-2000 apartment developments.
Interestingly, Point Piper — one of Sydney's most expensive suburbs — appears in the top 8. Expensive buildings have engaged owners who enforce standards. Disputes there tend to be governance-related, not defect-related.
What buyers should actually look for
The takeaway isn't “ignore disputes.” It's “understand the dispute.” Here's what our data suggests:
Red flag: Construction defect disputes
If the building has been to tribunal over structural defects, water ingress, or combustible cladding, expect significant price impacts. The worst buildings in our data trade at 50–80% below their suburb median. These discounts can persist for years.
Red flag: Repeat offenders
Buildings with 5+ tribunal cases are chronic. In our data, 28 buildings have been to tribunal five or more times. The top two repeat offenders — in Ultimo and The Entrance — have 9 cases each. Read more about repeat offenders →
Neutral or positive: By-law and governance disputes
A tribunal case about noise complaints, renovation approvals, or by-law enforcement usually signals an owners' corporation that's actively managing the building. In our data, these buildings often trade above their suburb median.
Look at the whole picture
A single tribunal case from 2018 about a pet by-law is very different from an ongoing construction defect saga with 8 decisions over 5 years. Check the number of cases, the time span, and the subject matter — not just whether a dispute exists.
Data & methodology
- Property sales: 4,396,878 records from the NSW Valuer General's Property Sales Information dataset. Filtered to residential sales ($100K–$10M), 2020–2025.
- Strata plans: 88,069 registered plans from the NSW Strata Hub open dataset, with registration dates, lot counts, and suburbs.
- Tribunal decisions: 2,004 published NCAT and Supreme Court decisions involving strata schemes (1999–2026), linked to strata plans via plan numbers.
- Strata managers: 73,982 manager records, used for professional management analysis.
- Controls: Price comparisons are controlled for suburb and building size (small: 1–10 lots, medium: 11–50, large: 50+). Weighted averages use dispute sale counts as weights.
Limitations: NCAT publishes decisions selectively — many disputes are resolved before a published decision. The actual number of strata disputes is significantly higher than what appears in published records. Price comparisons control for suburb and size but not for unit-level differences (floor, aspect, condition, renovations).
Sources
Check your building's dispute history
StrataChecks shows tribunal cases, financial health, and management details for any strata plan in NSW — cross-referenced with actual sale prices.
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