Updated November 2, 2026. Independent editorial; how we research.
RentCast is a rent estimate and property data service for US rentals. The app gives rent estimates and nearby comps for most residential addresses, market trends across 38,000+ zip codes and portfolio rent alerts: free with 5 comps and up to 5 portfolio properties, or Pro at $12 a month billed annually ($19 monthly) with 20 comps, branded reports and a 14-day trial. Its self-serve API covers 150+ million property records with value and rent AVMs, listings and market statistics, from a free 50-request Developer plan to Scale at $449 a month for 25,000 requests, with no long-term contracts. People look elsewhere when an estimate is not the whole job: investors want rent folded into deal analysis, multifamily operators want unit-level comps with concessions, short-term rental investors need nightly-rate data, and product teams that outgrow the API or need mortgage and risk data move to licensed national datasets.
Choose by the output you need. For a quick rent number with comps on single-family and small multifamily, a dedicated rent comp tool or even a free estimate will do. For apartment communities, use a multifamily data provider that surveys units daily. For an investor deciding whether to buy, a deal analyzer that pulls rent and sale comps together saves a step. For product teams, compare price per call and coverage against licensing a national property dataset by API or bulk file.
| Tool | Starting price | Free trial | Best for | Deployment |
|---|---|---|---|---|
RentCast | $12/month (billed annually) for Pro | Yes | Real Estate Investors, Landlords | Cloud |
Rentometer | $59/year (Basic) | No | Real Estate Investors, Landlords | Cloud |
HelloData | Subscription | Yes | Underwriters, Investors | Cloud |
DealCheck | $10/month | Yes | Investors, Agents | Cloud, Mobile |
M Mashvisor | $39.99/month (billed annually) | No | Real Estate Investors, Short-Term Rental Hosts | Cloud |
Zillow | Free | No | Landlords, Property Managers | Cloud |
ATTOM | Contact for pricing | Yes | Investors, Brokerages | Cloud |
Rental pricing data and analysis for property owners and investors.
Why pick it over RentCast: Rentometer is the closest like-for-like swap for rent comps: QuickView rent estimates for any US address, Pro Reports with comps and public record data, and CSV comp downloads, with batch processing, lead generation and API access on Pro. Basic is $59 a year, Essential $16 a month or $96 a year, and Pro $29 a month or $199 a year, with a free account to start. Report counts are capped by plan, and its API comes bundled with Pro rather than as a metered developer plan like RentCast's.
Daily multifamily rent comps, market surveys, and expense benchmarks from 38M+ units of listing data.
Why pick it over RentCast: HelloData is the upgrade for multifamily operators and underwriters: it surveys 38.5M+ units daily from more than 250,000 property leasing pages, capturing unit-level asking and effective rents, concessions and amenities, with automated comps and market surveys. Standard costs $300 per user per month with a free trial; Portfolio is priced per unit and bills API calls at $0.10 each. It is multifamily-only and far pricier than RentCast for a landlord pricing one house.
Property analysis app for rentals, flips, BRRRR, and multi-family deals with comps, offers, and branded reports.
Why pick it over RentCast: DealCheck suits investors who use RentCast as one step in deciding whether to buy. It pulls sale and rental comps with ARV and rent estimates into cash flow, flip, BRRRR and multifamily analysis, with an offer calculator, owner lookup and branded reports. The free Starter plan covers 15 saved properties and 5 comps; Plus is $10 a month and Pro $20, each with a 14-day trial. Its rent numbers serve the deal analysis rather than ongoing market monitoring.
Long-term and Airbnb rental income, ROI and market analytics for investment property buyers, plus a data API.
Why pick it over RentCast: Mashvisor fits investors weighing long-term against short-term rental income: rent and Airbnb revenue estimates, cap rate and cash-on-cash returns, opportunity scores and STR rules for 500+ cities, with nationwide search, rental comps and heatmaps from the Standard plan. Investor plans run $39.99 to $99.99 a month billed annually ($49.99 to $119.99 billed quarterly), and its data API starts at $129 a month. There is no free trial, no refunds and no monthly billing option.
Real estate and rental marketplace with free Zestimate and Rent Zestimate estimates and Zillow Rental Manager for landlords.
Why pick it over RentCast: Zillow's free Rent Zestimate is the no-cost baseline: enter an address in Zillow Rental Manager for an estimate built from the home's attributes, comparable rentals, local market rates and public data, then research similar advertised rentals nearby. Landlords can also advertise listings across Zillow, Trulia and HotPads. Treat it as a starting point, as Zillow itself does, and expect to give an email address to see the result.
National property data on 160M+ US properties via API, bulk files, and cloud shares, with AVMs and risk analytics.
Why pick it over RentCast: ATTOM is the route when RentCast's API is one feature in a larger data build: 160M+ US properties with ownership, deed, mortgage, foreclosure, permit, boundary and neighborhood data, the ATTOM AVM and a Rental AVM, delivered by API, bulk files, cloud delivery or an MCP server. A free API trial is available for evaluation. Pricing is negotiated per license, so it suits teams with a data budget rather than a single landlord.
Yes. RentCast's free app plan includes nationwide rent estimates, 5 nearby comps and up to 5 portfolio properties, and its Developer API plan includes 50 requests a month at no cost. Pro is $12 a month billed annually or $19 monthly, with a 14-day free trial.
Zillow's Rent Zestimate is free for any address through Zillow Rental Manager. DealCheck's free Starter plan adds up to 5 sale and rental comps with rent estimates inside a deal analysis. Rentometer offers a free account, with paid plans from $59 a year.
HelloData, which surveys 38.5M+ units daily with unit-level rents and concessions, from $300 per user per month. ALN Apartment Data is a long-standing alternative with monthly property-level updates on occupancy, rents and concessions, sold by quote.
Rentometer includes API access on its Pro plan, Mashvisor sells data API plans from $129 a month, HelloData's Portfolio plan bills API calls at $0.10 each, and ATTOM licenses national property data by API, bulk file or cloud delivery on negotiated terms.