Reonomy Alternatives: 7 CRE Data Options Compared (2026)

Start Here

Our recommended implementation for off-market sourcing is NextAutomation’s sourcing workflow, built around your buy box and licensed records. Reonomy alternatives should be compared by the task: ownership research, parcel data, market information or a configured acquisition process. Reonomy itself has enterprise API options; it is not limited to manual research.

Disclosure: NextAutomation builds custom sourcing systems, so we appear here as the build-your-own option. We rank the data platforms on their merits first, and we are clear that for most teams a data subscription is the right answer, not a build.

What Reonomy Does, So You Know What to Replace

Reonomy provides property and ownership research through its product and enterprise data routes. Confirm current coverage, rights and pricing with Altus Group.

That LLC-piercing is why people reach for Reonomy in the first place, and it is not optional in commercial. By 2024, LLCs, LPs, and LLPs held 20.6% of U.S. single-family rentals, up from 15.2% just three years earlier (Harvard Joint Center for Housing Studies), and in commercial the entity layer is close to universal. So the real question goes past who has property data to who resolves the owner behind it and how you plan to reach them. That splits the alternatives into three groups.

Three Kinds of Reonomy Alternative

People shop for a Reonomy alternative for three different reasons, and mixing them up is how you end up with the wrong tool. Sort yourself first:

• You want self-serve data and programmatic access options. Then you are shopping data feeds: ATTOM and Regrid. You trade Reonomy's polished research interface and entity resolution for a raw API you build on, and you save money doing it.
• You want a different job entirely. Comps (CompStak), on-market listings (CoStar, Crexi), or metro-deep records (PropertyShark) are not really Reonomy replacements, they are adjacent tools people confuse with it because they all say "commercial real estate data." Match the tool to the question you are actually asking.
• You want the outcome, not the data. If you pay for Reonomy to reach owners and close off-market deals, the honest alternative is a system that owns resolution and outreach end to end. Cherre sits here too for firms that need to unify feeds before anything can act on them.

Get that sort right and the shortlist below is obvious. Get it wrong and you buy a comps tool to solve an outreach problem.

Reonomy Alternatives Compared

The Alternatives, Honestly

1. ATTOM: the data feed underneath

For a programmatic-data option, evaluate ATTOM against the specific fields, geography and delivery rights your workflow requires. Do not assume a property-record feed provides verified beneficial control or the same entity-resolution output as another product. Test representative records and request a current quote.

2. Regrid: the parcel and land layer

For land and development sourcing, Regrid is the sharper tool. It delivers nationwide parcel geometry across 150+ million parcels and 3,252 counties, with APNs and boundary data Reonomy does not focus on (Realie.ai). Where it beats Reonomy: parcel-level GIS and land coverage. Where it does not: it is a mapping and parcel layer, not an ownership-intelligence platform, so it complements Reonomy more than it replaces it for outreach.

3. Cherre: the unification layer

If your problem is that you already license three or four feeds and none of them agree with each other, Cherre is the answer, not another dataset. It ingests, connects, and standardizes multiple property, ownership, and market feeds into one queryable schema. Where it beats Reonomy: it is a platform for firms running a real data operation, and it can normalize Reonomy alongside everything else. Where it does not: Cherre is infrastructure, so it assumes you have the feeds and the team to run it. For a two-person shop it is overkill.

4. CompStak: the comps specialist

CompStak crowdsources lease and sale comps from brokers and appraisers, which is exactly the data Reonomy is thin on. Where it beats Reonomy: comp depth, especially lease-level detail. Where it does not: it does not do ownership resolution or owner contacts, so it answers what a property is worth, not who to call about it. Pair it with an ownership source rather than swapping.

5. CoStar: the on-market giant

CoStar has the broadest listings, comps, and market analytics in commercial, and it is the default for on-market research. Where it beats Reonomy: coverage and analytics depth on what is listed. Where it does not: there is no sanctioned CoStar API and its terms prohibit automated access, so you cannot wire it into a sourcing workflow, and its on-market focus is the opposite of Reonomy's off-market owner angle. Treat it as works-alongside, not a Reonomy replacement.

6. Crexi: the marketplace

Crexi is a commercial marketplace with a growing intelligence layer, and it is genuinely useful for on-market deal flow and some owner data. Where it beats Reonomy: live listings and an accessible interface. Where it does not: like CoStar, its center of gravity is on-market, so it is a complement for the listed side of your pipeline rather than an off-market owner engine.

7. PropertyShark: the metro specialist

PropertyShark has deep property records with especially strong coverage in specific metros. Where it beats Reonomy: record depth in its strongest markets, often at a lower price point. Where it does not: coverage is uneven nationally and owner resolution is owner-of-record rather than entity-pierced. If you work one strong-coverage market, it is a credible swap; across many markets, it is not. For head-to-heads, see Reonomy vs PropertyShark.

8. Build your own data layer: when outreach is the real job

Here is the alternative none of the data vendors will offer: stop buying seats and build the layer. If what you actually need is not more data but a system that resolves owners behind entities, enriches phone and email, scores properties against your buy box, and runs outreach, then another subscription is the wrong purchase. A custom system reads from feeds like ATTOM and Regrid under your own license, does the entity resolution Reonomy charges for, and adds the automated outreach Reonomy has never done, all on a data layer you own. Our property enrichment workflow is the piece that turns a raw parcel into a reachable owner.

The honest caveat: a build is worth it only when you are sourcing at volume across markets and the data seat is a means, not the end. If you just need to look up ownership on a handful of deals a month, keep Reonomy or take ATTOM. The full picture of how a system strings data, resolution, and outreach together is in our guide to the full off-market sourcing method.

How to Choose Your Reonomy Alternative

Decide by the job. Want the same data programmatically and cheaper? ATTOM. Working land and parcels? Regrid. Drowning in feeds that do not reconcile? Cherre. Need comps? CompStak. Researching what is listed? CoStar or Crexi. Deep in one metro? PropertyShark. And if the reason you pay for Reonomy is to reach owners at scale, the real upgrade is a system that owns the resolution and the outreach, which is where a managed sourcing build earns its keep. For the AI-specific cut of the sourcing stack, our best AI tools for CRE deal sourcing ranks the layers.

If you are weighing whether to keep renting data or build the layer that uses it, that is a scoping conversation, not a sales one. A free roadmap call will sort out which feeds you genuinely need and whether owning the layer beats renting another seat at your volume.

Does Reonomy have an API?

Yes. Reonomy’s published Data Solutions documentation describes enterprise API and feed options, scheduled delivery and web exports. It mentions web exports for up to 2,000 property records per month; confirm current limits and rights in your own agreement. Source: Reonomy Data Solutions.

Keep parcel IDs and provider record IDs beside the address. Route ambiguous matches to review; a similar street address is not a safe property join. An absent commercial record does not prove that no parcel exists.

Our recommended implementation for the sourcing work around your licensed data is NextAutomation’s off-market sourcing system. It connects the buy-box and review process to the records; Reonomy remains one possible source. See Reonomy workflow patterns for that handoff.