Rental Data Sources and Quality

Learn more about the accuracy of our rent estimates and rental data availability.

Cindy Bellford avatar
Written by Cindy Bellford
Updated over a week ago

Accurate rental data is the foundation of our platform, and we do everything we can to ensure we have the most accurate and up-to-date rental data available to our users.

Below are answers to frequently asked questions about our rental data sources, quality, and regional availability.

How accurate are your rent estimates?

We calculate each rent estimate based on similar nearby rental property listings, their listed rents, and their unique characteristics.

Our rent estimation algorithm takes into account the location, type, size, layout and listing age of each comparable property, and uses a proprietary weighted average formula to calculate the rent estimate of the property you're searching for in real-time.

In addition to our rent estimate, you can view a rent estimate range and the exact comps that were used to calculate it.

Where does your rental data come from?

We scan and catalog public rental property listings from some of the most popular online listing websites and directories.

This allows us to compile a database of nearly all current and historical rental listings in the United States, that we can then use in our rent estimation algorithm.

How often is your data updated?

We scan and catalog new rental listings daily to make sure we always have the most accurate information. All of our rent estimates are calculated in real time based on the available rental data.

What areas does your rental data cover?

We have nationwide coverage for residential properties in the United States, with over 140 million properties in our database. Our rental data covers both single-family properties, as well as multi-family and apartment buildings.

We also have coverage for most US zip codes, and are able to show average market rents, market rents broken down by bedroom size, the number of rental listings broken down by bedroom size, as well as historical rent trends for each market.

RentCast currently does not support and is not available in other countries.

Is your rental data available via an API?

Yes, all of the rental data you see on our platform is available via our property and rental data API. You can use our REST API to power your real estate applications, CRMs or custom workflows.


You can also connect it to thousands of other apps without writing any code with our Zapier integration in a few minutes.

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