Property search site HotPads has launched a free mobile application for the iPad. The site also released a redesigned version of its Android app today, and the site recently renewed its iPhone app. Both smartphone apps were originally released in January 2010.

Users who download the iPad app are invited to search for listings near their current location or near a location they specify. An “Options” button allows users to search for for-sale homes, rentals, or hotels. HotPads has more than 500,000 homes for rent and 3.5 million homes for sale on its site.

Once users select the type of listing they are looking for, they can choose filters for their results. For for-sale homes, these include price range; bedroom range; keywords; minimum number of photographs; whether a property is for sale, a new home, an auction property, a foreclosure, a listing without a price, and/or whether a listing has been updated within a certain period of time.

Results appear in map view or can appear in a sortable list view if the user requests. Users can sort by such features as whether a listing has been recently updated or created, by price, by square footage, by acreage, by distance from current location, or by number of listing pictures.

In map view, when a user taps a listing for more information a listing page appears alongside the map. Users can still navigate the map while the listing page is open.

The map populates as the user moves it. Listings the user has already tapped turn from orange to gray to differentiate them. Users can also save searches and listings.

The listing page includes a property description, photos, price, number of bedrooms and bathrooms, square feet, year built, the schools children living in the home would attend, and whether a property is a foreclosure.

The page also includes price comparisons to surrounding areas, including the home’s ZIP code, city, congressional district, area code, school district, and state. Buttons on the listing page allow the user to call the listing agent, email the listing details, or share it on Facebook.