As much as I would like to tell you there exists a site that tells 100% of all properties and does so accurately, I canâ€™t. If someone else makes that claim, it is probably made erroneously.
Realtor.com has many, and definitely the greatest volume. Not all MLS properties are supplied into an IDX (internet data exchange) data feed. Not all MLS listed properties are uploaded to Realtor.com. Any Broker site that is going to showcase other Brokers listings, and MLS listings can only showcase those that are authorized by the listing Broker who determines whether a property will or will not be supplied via IDX.
1) All MLS listed properties are not data fed to other sites via IDX.
2) All properties for sale are not multiple listed.
Therefore, one cannot get a fail safe 100% all inclusive list of all properties for sale. -
Earlier I said all properties via MLS and that was incorrect, because of those that are excluded from IDX. I removed that post for that reason.