Every address in NSW.
On-market or off.
Updated daily.
We track the market status of 4,905,892 New South Wales addresses and publish it as a daily CSV and a REST API.
Live in NSW today · VIC, QLD and other states rolling out before 2027
Why we built this
“On market” is just the trigger. The real redevelopment signal is the site itself — but the trigger is the part you can’t afford to miss.
Architects, developers, and interior designers all read the same playbook: an old house on a wide corner lot in an R3 zone near transport beats the same house on a narrow, steep, constrained block. Those attributes are stable — you can score them any day of the year.
What changes is availability. Roughly 51,000 NSW properties are on the market at any moment, and a typical campaign runs about a month from listing to sold. Hear about a site in week three and the decision has already been made without you.
blipton is the timing layer. A daily on/off flip for every address tells you the first public day a candidate site becomes acquirable — so you can run your site-scoring against what’s actually for sale this morning, watch which suburbs are heating up, and point marketing and outreach at the streets where decisions are being made right now.
The redevelopment signal comes from a site’s physical, planning, and market attributes together. We supply the fourth ingredient: the moment it’s in play.
- Older building where the land is worth more than the dwelling
- Large lot, useful frontage, regular shape
- Corner blocks and flat or gently sloping land
- Underutilised land — oversized yards, a block that could hold more than one home
- Permissive zoning (R3 and other medium-density zones)
- No overlays that block change
- Near transport, schools, shops, and town centres
- Fits minimum lot size, frontage, and height controls for dual occupancy or subdivision
- Long-time ownership, estate and distressed sales
- Listed below nearby land values
- Similar sites nearby already being redeveloped
- Strong developer and upsizer demand in the suburb
A block becomes a strong lead when it scores well on all of these at once — old house + large lot + permissive zoning, corner block + regular shape + good frontage, underbuilt site in a growth suburb. blipton tells you which of them are on the market today.
How it works
Two clocks, deliberately. The address base moves quarterly. The market status moves daily.
Our address list is the Geocoded National Address File (G-NAF), Australia’s authoritative address register, published openly by Geoscape Australia. We load the complete NSW set (May 2026 release, GDA2020 datum) and collapse duplicate alias records onto their principal address, so every row is one real place.
We refresh it every quarter — because that’s how often the register actually changes, and it barely does. Between the February and May 2026 releases, NSW gained 15,482 addresses: a 0.34% change. Addresses are near-static. What changes daily is their market status.
Our daily indexer reads publicly published property-market signals, joined to licensed open government address data. Each run builds a complete picture of every property currently advertised for sale in NSW, matches each one back to its address in the register, and updates that address’s status.
Anything that stops appearing is marked off-market only after a 3-day confirmation window, so a listing that briefly drops out and returns doesn’t flip your data back and forth.
How we measure accuracy
…and why “accuracy” is the wrong word.
At any given moment, only about 1.1% of NSW addresses are on the market — roughly 51,000 out of 4.9 million.
A system that simply labelled every address “off-market” would score 98.9% accuracy — and be completely useless. It would find zero listings.
So we don’t report accuracy. We report recall (of the properties genuinely on the market, how many did we catch?) and precision (of the properties we flagged, how many really are listed?) — measured only on the on-market class, where the signal actually lives.
If a vendor quotes you a single “accuracy percentage” on this data, they’re quoting you the base rate.
What we don’t capture
…and won’t pretend to.
What we publish
Facts, not content: an address, a suburb, a postcode, a boolean, and a date.
We do not collect, store, or resell listing descriptions, photographs, floorplans, prices, agent details, or third-party listing identifiers. Our address strings are our own, derived from the public government register.