Zillow's Listing Access Standards no longer require a listing to be in the MLS; since March 17, 2026 they require only that a publicly marketed listing be broadly accessible, with no login wall and no need to work with the listing brokerage to see it. For a metro Detroit agent that changes less than the headlines suggest, because Realcomp's rule is now the stricter one: within one business day of marketing a property to the public, the listing broker must put it in the MLS. The yard sign, the window flyer, the Instagram post with an address and a pre-market listing on Zillow all start that clock. A Coming Soon listing must go active within five business days and cannot be shown before then, and a first Coming Soon violation costs $1,000.
In short
- Zillow's March 17, 2026 update dropped the one business day MLS requirement and kept one test: broad public access (Real Estate News).
- Realcomp's rules, revised July 21, 2026, still require MLS entry within one business day of public marketing.
- A Realcomp Coming Soon listing must activate within 5 business days; violations cost $1,000, $2,000 and $5,000.
- On September 15, 2026, a federal judge refused Zillow's bid to force Chicago's MRED to restore its feed on Zillow's terms.
What changed in Zillow's Listing Access Standards
The first version dates from 2025. HousingWire reported its core rule on May 20, 2025: "Publicly marketed listings should be entered in the MLS within one business day." Listings that broke it "won't be published on Zillow or Trulia for the life of the listing agreement," with blocking from June 30, 2025.
The March 2026 version is shorter. Real Estate News reported that the timing requirement and the MLS requirement were both removed, along with the list of marketing tactics that counted as public. What remains is access: a listing must be "broadly accessible to the general public." A listing that a buyer can see only by registering, creating an account or working with the listing brokerage fails. A genuinely private listing, kept inside one brokerage at the seller's request and never marketed to consumers, is still allowed.
The same day, Zillow launched Preview, a pre-market program that shows a partner brokerage's listing on Zillow before it reaches the MLS. On September 17, 2026, Zillow and Realtor.com said Preview listings would appear on both sites, with more than 400 brokerage partners.
Why the Zillow ruling in Chicago matters to a Michigan agent
The Chicago case shows which rule wins when a portal and an MLS disagree. Midwest Real Estate Data cut Zillow's listing feed in May 2026 after Zillow tried to exclude Compass listings; MRED's rules prohibit "the filtering of listings based on the brokerage or agent," according to court filings cited by Bloomberg. On September 15, 2026, Judge John Tharp denied Zillow's request for a preliminary injunction, dissolved the temporary order that had kept the feed running and sent Zillow's claims to arbitration. Zillow said the ruling "is not the final word."
Nothing in the ruling touches Realcomp. The lesson is narrower: the MLS's own licence terms decided whether listings appeared on the portal. In metro Detroit, the rule a listing agent can be fined under is Realcomp's, and Zillow's standard is the second test, not the first.
Which listing route passes both rules
| Route | What Realcomp requires | Zillow's March 2026 test |
|---|---|---|
| Active listing | In the MLS within one business day of public marketing | Passes: public on MLS feeds |
| Coming Soon | Signed exclusive listing, activation within 5 business days, no showings until then | Passes if shown on public feeds with its label |
| Delayed marketing | Filed and shared with MLS participants; seller certification signed | Fails if the public can only see it by contacting your brokerage |
| Office exclusive | Filed, not shared; seller certification; into the MLS within one business day once publicly marketed | Allowed only while genuinely private |
| Zillow Preview | Public marketing, so into the MLS within one business day | Passes: on national portals |
Realcomp's Section 1.3 requires the seller's signed certification for any exempt listing, disclosing the relationship with the broker and confirming the seller understands the MLS exposure being waived or delayed.
Six steps for a metro Detroit listing
- Choose the route with the seller and put it in writing. An office exclusive or delayed marketing listing needs the seller's certification before it is filed. Realcomp's May 4, 2026 policy notice repeats that the signed form is mandatory.
- Name the first public act and date it. Realcomp's list is broad: "flyers displayed in windows, yard signs, digital marketing on public facing websites, brokerage website displays (including IDX and VOW), digital communications marketing (email blasts), multi-brokerage listing sharing networks, and applications available to the general public."
- Count business days, not days. Realcomp's Coming Soon policy notes that business days exclude Saturdays and Sundays. A sign that goes in on a Friday means MLS entry by Monday.
- Set the Coming Soon activation date inside five business days. The listing cannot be shown by anyone, including your own office, until that date. It goes active at 12:01 a.m., stays active for at least 24 hours and cannot return to Coming Soon. The same brokerage cannot list the property as Coming Soon again for 90 days.
- Keep listings off login walls. A brokerage page that only registered clients can see is exactly what Zillow's standard excludes, and under Realcomp it is still public marketing if the public can reach it.
- Treat a pre-market portal listing as a sign in the yard. If your brokerage is a Preview partner, the Preview date is the public marketing date.
The mistake most agents make at step 2
The "sneak peek" post. An agent posts a photo of the kitchen with the street name in the caption, meaning to tease, and has just marketed the property to the public. Under Realcomp's rule that post counts as digital marketing on a public-facing website, and the one-business-day clock is running whether or not a sign is up. Keep teasers free of address, price and a way to enquire, or enter the listing first.
What we build for this
For teams on the real estate industry page, we build a reminder system driven by the team's own checklist and dates. The date the sign goes in or the first post goes out becomes the start of the MLS entry deadline and the Coming Soon activation window, and the reminder fires before either is missed. We also build a single intake that produces the property page, flyer, social posts, email and a paste-ready MLS block; it deliberately does not write to the MLS, so the agent enters and times the listing. We do not interpret Realcomp's rules or Zillow's standards for you; the broker does. Before a listing goes live, the seller impersonation fraud check is worth running alongside this one.
Zillow relaxed its rule. Realcomp did not, and Realcomp is the one that fines.
