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Real Estate · head to head

Reonomy vs Zillow

Reonomy logo

Reonomy

Real Estate

Commercial property ownership and contact data platform, acquired by Altus Group for roughly $202 million and now sold on unpublished, increasingly enterprise-focused pricing

From
On request
Rated
-
Full reviewWebsite
Zillow logo

Zillow

Real Estate

Consumer property search site whose actual product, Premier Agent, is paid lead placement sold to agents and brokers, not the free listings buyers browse

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Reonomy pricing is not published, and the sales process has become more enterprise-focused since the Altus Group acquisition, which reportedly makes it less accessible for smaller, self-service buyers than it once was.; Zillow leads are frequently sold to multiple agents at once, so an agent is often bidding against competitors for the same buyer rather than buying an exclusive introduction.
  • They diverge on capability: Reonomy covers Ownership records, Zillow covers Consumer listing search.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Reonomy and Zillow actually diverge.

Attributes where Reonomy and Zillow differ
AttributeReonomyZillow
PlatformsWebWeb, iOS, Android

Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated), category (Real Estate).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Reonomy

  • Ownership records
  • Transaction history
  • Off-market prospecting
  • Portfolio analysis
  • Contact data
  • Market and property search

Only in Zillow

  • Consumer listing search
  • Premier Agent placement
  • Lead connections
  • Performance dashboards
  • Zillow Flex
  • Agent profile and reviews

What people use each for

The jobs each tool is most often brought in to do.

Reonomy

  • A broker sourcing off-market deals by identifying and directly contacting property owners matching acquisition criterianot Zillow
  • A lender researching an owner portfolio and financing history before extending creditnot Zillow
  • An investor doing outbound outreach to owners of a specific property type or size in a target marketnot Zillow
  • A firm already using ARGUS Enterprise considering Reonomy for data given the shared Altus Group ownershipnot Zillow

Zillow

  • An agent in a competitive metro wanting listing-page visibility on homes they do not personally representnot Reonomy
  • A team wanting predictable lead volume to feed a follow-up system, accepting shared, non-exclusive leadsnot Reonomy
  • A brokerage evaluating Zillow Flex as a pay-on-closing alternative to upfront advertising spendnot Reonomy
  • A buyer or renter using the free consumer search, who is not Zillow paying customer at all and should understand that agent placement on a listing does not mean that agent represents the sellernot Reonomy

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Reonomy

  • Pricing is not published, and the sales process has become more enterprise-focused since the Altus Group acquisition, which reportedly makes it less accessible for smaller, self-service buyers than it once was.
  • It is a data and contact-sourcing tool, not a valuation platform, so firms needing DCF modelling still need ARGUS Enterprise or an equivalent separately, even though both are Altus Group products.
  • Coverage and data freshness for ownership and contact information vary by market, and off-market sourcing quality depends on how current that contact data actually is.
  • Shared ownership with ARGUS under Altus Group means a firm concentrating spend with both products has less independent competitive leverage across its CRE software and data budget.
  • As with any owner-contact database, deliverability and accuracy of contact information degrade over time, and there is no independent public benchmark of Reonomy data accuracy to check ahead of purchase.

Zillow

  • Leads are frequently sold to multiple agents at once, so an agent is often bidding against competitors for the same buyer rather than buying an exclusive introduction.
  • Reported lead-to-close conversion of roughly 1 to 3 percent means most paid connections do not become closed transactions, and the advertising spend has no guaranteed return.
  • Cost per connection varies heavily by ZIP code and competition, so budgeting is unpredictable and can spike in desirable areas without warning.
  • The agent shown as a contact on a listing is frequently not the listing agent, which has drawn criticism for consumer confusion about who actually represents the seller.
  • Placement is rented, not owned; an agent who stops paying loses visibility instantly, unlike a website or CRM investment that continues to compound in value.

Pricing, plan by plan

Reonomy

On request
  • Reonomy$undefined/year
    • Monthly and annual subscription options, annual saves roughly 30%
    • Pricing not published, increasingly enterprise-focused sales process since Altus Group acquisition
    • Cost scales with data access scope and seats

Zillow

On request
  • Premier Agent$undefined/month
    • Consumer search and listings are free; agents pay for lead placement
    • Average cost per connection roughly $139 (non-major metro) to $223+ (major metro)
    • Monthly spend commonly $200-600 small markets, $1,500-5,000+ major metros

Which should you pick?

Choose Reonomy if

  • You need ownership records.
  • You also want transaction history.
Reonomy review

Choose Zillow if

  • You need consumer listing search.
  • You work on Web, iOS, Android.
  • You also want premier agent placement.
Zillow review

Questions people ask

Is Reonomy or Zillow better?
Neither clearly leads. Reonomy starts at On request and Zillow at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Reonomy or Zillow?
Reonomy starts at On request and Zillow at On request.
Does Reonomy or Zillow run on more platforms?
Reonomy runs on Web. Zillow runs on Web, iOS, Android.
What is Reonomy best used for?
Reonomy is most often used for a broker sourcing off-market deals by identifying and directly contacting property owners matching acquisition criteria, a lender researching an owner portfolio and financing history before extending credit, an investor doing outbound outreach to owners of a specific property type or size in a target market, a firm already using argus enterprise considering reonomy for data given the shared altus group ownership. Of those, a broker sourcing off-market deals by identifying and directly contacting property owners matching acquisition criteria and a lender researching an owner portfolio and financing history before extending credit are not what Zillow is typically brought in for.
What can Reonomy do that Zillow cannot?
Reonomy covers Ownership records, Transaction history, Off-market prospecting, Portfolio analysis. Zillow covers Consumer listing search, Premier Agent placement, Lead connections, Performance dashboards.

Answered from the vendors’ own pages

Reonomy: Who owns Reonomy?

Altus Group, which acquired it in November 2021 for roughly $202 million; it sits in the same portfolio as ARGUS Enterprise.

Zillow: Do home buyers or sellers pay Zillow?

No. Consumer search, Zestimates and listing browsing are free. Zillow revenue comes from agents and brokers paying for Premier Agent placement and leads.

Reonomy: Is Reonomy the same as CoStar?

No. Reonomy focuses on ownership, contact and off-market sourcing data; CoStar is broader, covering listings, lease comparables and market analytics at larger scale.

Zillow: Does the agent shown on a Zillow listing represent the seller?

Not necessarily. Premier Agent placement can show a paying advertiser as the contact even when they are not the actual listing agent.

Reonomy: Is pricing available online?

No. Reonomy offers monthly and annual subscriptions with roughly 30% savings annually, but exact rates require a quote.

Zillow: Is there a cheaper alternative to paid placement?

Zillow Flex offers a pay-on-closing model instead of upfront ad spend in select markets, trading a lower risk of wasted spend for a referral fee on closed deals.

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