Every address in NSW.
On-market or off.
Updated daily.
blipton is a daily index of which of NSW’s 4,905,892 residential addresses are on the market — and which just left it. Published as a daily CSV and a REST API.
Upload your CSV, keep your columns — we append live on-market status. Free for your first 100 addresses · no account needed · VIC, QLD and other states rolling out before 2027
Does your address list match reality?
Every organisation holding property has an address list, and none of them are clean. Drop yours in — any format, any mess. We clean it, match each row to its permanent NSW address ID, and flag the duplicates and the records that don’t exist. Then we’ll tell you which of them are on the market right now.
Unit numbers, ranged addresses, abbreviations, four spellings of the same street. Each row is matched to one permanent G-NAF identifier — or honestly flagged as unmatched.
Duplicates collapse to the dwelling they describe. Lot/DP parcel references and addresses that don’t exist are named rather than quietly dropped.
Once a record has an ID, everything else follows: what’s on the market today, what just left it, what’s happening next door.
Upload your CSV with whatever columns you already have — we best-match each address and append currently_on_market, on_market_date, matched_address and match_confidence, your columns untouched. Free up to 100 addresses without an
account — 5,000 with one. Your file is processed and deleted; we keep the counts, not the addresses.
( 01 ) The_Dashboard
Every on-market address, on a map, the morning it lists.
The timing layer, drawn on a map. Pulsing dots are addresses on the market right now; the ranked panel beside them shows which suburbs are heating up this week. Architects and developers use it to catch candidate sites the first public day they’re acquirable — fitout and interior firms watch the same streets from the other end, for the addresses that have just turned over.
( 02 ) 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 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 off flip is worth as much as the on. An address that came off the market ten weeks ago has, in most cases, settled and changed hands — leaving a household whose decisions are still open, which is exactly when fitout, joinery, flooring and landscape work gets specified. Mail the two thousand addresses that turned over in your service area last quarter, instead of the five million that didn’t.
You already know how to read a site. What you can’t see is the moment it comes into play — and that’s the ingredient nobody else ships: a daily on/off flip on every address.
- 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
- Near transport, schools, shops, and town centres
- 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, corner block + regular shape + good frontage, underbuilt site in a growth suburb. blipton tells you which of them are on the market today.
( 03 ) How_It_Works
Two clocks, deliberately. Market status moves daily. Addresses move quarterly.
Each day we compile market status from publicly accessible listing directories, joined to licensed open government address data. We record an address, a status and a date — never listing content such as photographs, descriptions, prices or agent details. 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 delisted only after a 3-day confirmation window, so a listing that briefly drops out and returns doesn’t flip your data back and forth.
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.
( 04 ) Heating_Up
The suburbs moving this week.
Where new listings are clustering right now — the suburbs where sites are coming into play and outreach lands while the decision is still open. Ranked by new listings over the last seven days, refreshed with every daily crawl.
This is the top 5. A free account gets the full 100-suburb ranking, week-over-week velocity, and every on-market address on the live map — plus daily email alerts for the suburbs you star.
( 05 ) 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 as not for sale 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.
( 06 ) What_We_Don’t_Capture
…and won’t pretend to.
( 07 ) What_We_Publish
Facts, not content: an address, a suburb, a postcode, a boolean, 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.