What the snapshot shows
How concentrated is the represented source-entry snapshot?
United States — Source concentration: Represented source: Zillow — 7,854,218 / 8,779,502 Active source rows; Largest represented source share: 89.5%; Source-entry concentration (HHI, 0–1 scale): 0.802. Country cohorts use each source's dominant market, so a source total can include rows outside that country.
Reports the largest represented source entry's share, HHI on a 0–1 scale, and effective source-entry count. These describe Landomo's generated portal-key snapshot, not unique publishers or national portal market share.
- Largest represented source share
- 89.5%
- Source-entry concentration (HHI, 0–1 scale)
- 0.802
- Effective number of source entries
- 1.2
| Represented source | Active source rows | Share of represented source rows |
|---|---|---|
| Zillow | 7,854,218 | 89.5% |
| Mansionglobal Com | 213,697 | 2.4% |
| Crexi Com | 193,657 | 2.2% |
| Rent.com | 164,860 | 1.9% |
| Compass Com | 128,070 | 1.5% |
| Atproperties Com | 50,353 | 0.6% |
| Corcoran | 44,213 | 0.5% |
| Christiesrealestate Com | 21,745 | 0.2% |
| Bairdwarner Com | 21,007 | 0.2% |
| Crye Leike Com | 14,287 | 0.2% |
| Roomster Com | 12,238 | 0.1% |
| Bhhs Florida | 12,206 | 0.1% |
| Spareroom Com | 8,526 | 0.1% |
| Nestseekers Com | 7,109 | 0.1% |
| Remax | 5,940 | 0.1% |
| Zumper | 5,465 | 0.1% |
| Coldwell Banker | 4,832 | 0.1% |
| Coldwellbankerhomes Com | 4,276 | 0% |
| Brown Harris Stevens Com | 4,081 | 0% |
| HotPads | 3,591 | 0% |
| Russlyon Com | 1,469 | 0% |
| Livsothebysrealty Com | 891 | 0% |
| Pacificsothebysrealty Com | 647 | 0% |
| Jamesonsir Com | 641 | 0% |
| Village Properties | 452 | 0% |
| Bhhs Georgia | 383 | 0% |
| Bhhs Carolinas | 312 | 0% |
| Sothebysrealty Com | 215 | 0% |
| Redfin | 78 | 0% |
| Carolwood Estates | 43 | 0% |
Evidence threshold
At least 2 represented source entries, each with at least 500 rows, and 5,000 active source rows in total. Every snapshot required by this study must be dated no later than the evaluation date and be no more than 90 days old.
Method
An active source row is an advertisement record represented in Landomo at the capture time. A represented source entry is one generated portal key; entries are not consolidated into unique publishers. A source entry is assigned to a country cohort by its dominant market, so its total is not a country-filtered national count. A row is not a unique property or a completed transaction.
Limitations
- The same property may occur on more than one portal, so source rows are not deduplicated homes.
- The snapshots cover sources represented in Landomo; they are not complete national inventories or portal market-share estimates.
- Country cohorts use each source's dominant market, so a source total can include rows outside that country.
- Asking prices are advertisements, not completed transaction prices.
- Portal and city snapshots were captured on different dates and are never added together.
- Generated source entries are portal keys, not deduplicated publishers; aliases or regional entries can belong to the same publisher.
Provenance
- Reviewed
- Portal catalogue snapshot