Laura provided a great answer to you below. If you do believe that a rental listing on our site is not legitimate, please use the 'Report an error' button to alert us. We can review the listing and remove it promptly if it appears to be a scam.
Also, please note that we are aggressively tackling the issue of rental scams right now and will be rolling out a few product features soon that should help curb this.
The answer could be that the owners are motivated to move and have their property listed both for sale and for rent.
Also, some owners may be unaware that their "for sale" property is being picked up by a scammer who has taken the "for sale" listing information and posted the property "for rent" in an attempt to gain someone's personal information or money. These types of scams are becoming more prevalent on real estate web sites as the rental markets in a lot of areas are very active right now.
So...be very cautious when checking out rental properties from internet sites. Do verify that the landlord or property manager is legitimate and don't give them anything until you do.
Good luck to you!
Prudential Connecticut Realty
Some homes are both for sale and for rent which is probably what you are seeing. But if you have a specific example of one that was not for rent but showed that way I might be able to help you get to the bottom of the problem.
Either way Trulia is not going to be the best source for finding rentals. You can view all homes for rent in the Maryland MLS at our website. This is the same information that we see as Realtors and it is usually up-to-the-minute.
There is no charge for our rental locator service and all you need is good credit and rental references!