Easily access the information available with your CoStar account from your phone! While away from the office, commercial real estate professionals can now find detailed information on properties, space for lease, properties for sale, sale comparables, lease comparables, and tenants and benefit from the depth of verified, continuously updated information provided by the CoStar service. With the new CoStar app, you now have access to the most accurate & comprehensive property information available from anywhere, and on the go!
Disclaimer: CoStar™ app is a mobile extension of the professional suite of CoStar Professional services and is intended only for CoStar users.
·      Answer questions on the spot with access to CoStar information on your phone
·      Access CoStar’s massive database of over 5.2 Million commercial properties throughout the US, Canada and the UK!
·      View in-depth CRE information around your current location, including millions of photos.
·      Lookup every CRE professional in your area and access their contact information and properties they are associated with.
·      Communicate instantly with a call, email, or text message from the app
·      Perform Live map searches in your current location and see the map update with listing in real time while you’re on the move.
·      Move the map with your fingers or do a lookup to change your search area
·      Search for any property, available space, properties for sale, sale comparables, lease comparables, and tenants
·      Search filters are country specific and criteria options work seamlessly based on where the map is positioned. (eg. viewing London will display UK specific filter criteria)
·      Lookup geographies like cities, counties, postcodes/zips, submarkets, streets, as well as property addresses and building names.
·      Custom areas can be drawn on the map via interactive draw tools for area, radius, line corridor.
·      Analyze properties across all commercial property types.
CoStar’s professional suite of products provide unmatched local market insight and nationwide coverage, supported by the industry’s largest property research organization. With nearly 1,500 highly trained professionals, CoStar field and analytic researchers:
• Log more than 5.1 million data changes per day
• Make more than 1.9M calls a month (60K Calls a day) to brokers, owners, developers and other commercial real estate professionals
• Canvass more than 500,000 properties nationwide annually
• Take more than 1 million property photographs annually
The result: Comprehensive, accurate and continuously updated commercial property information that helps win clients and close deals.
Note: Continued use of location services (GPS) running the background can dramatically decrease battery life.

What’s New

Version 4.3

We are always working to add new features and keep the app in tip top shape. This update includes improvements to performance and reliability.
Thanks for using CoStar on your iPhone!

Ratings and Reviews

3.5 out of 5
224 Ratings

224 Ratings

Carly0017 ,


Daily desktop user. This app is an absolute waste of my time to scan my phone to my computer screen to log in with every - single - day. Cheers you for screwing your paying customers with this extended log in so you can MAYBE find people who found a loophole. App does not work as well as desktop version.

Looks like Costar deleted my last 1 star review? Wish I could give you negative 1 Stars. We also had a looplink through them to link our properties to our website. After 4 months, they still can’t get it right. Our listings seem to be at random - some are not even states we service. Having difficulty with anyone being able to actually personally help. The only helpful person is our property researcher who responds and acts quickly, but doesn’t always have authority to make bigger changes.

Assira the Black ,

Pointless if you can’t ‘get through the front door’

If you want to use if like zillow or realitor app, it is pointless. Those you can download, make an account, and get to price hunting for your dream home. I was hoping that this app would provide something similar. I downloaded it and there is no way to create an account. It looks like you have to go to their site to get the desktop app. I am not thrilled about this. It I wanted it on my computer there are other options. So no telling if the actual app is like the features available for homes. I could not even get that far.

NexusLiving ,

Great Improvement

I have used Costar for years, but am extremely happy with the ease of use on phones now. I used to have to carry around a laptop or an iPad for a simple search, now I can check instantly!

Been able to quickly find opportunities buying off market multifamily using this app.


150.3 MB

Requires iOS 9.2 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2018 CoStar Group Inc.


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    With Family Sharing set up, up to six family members can use this app.

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