Free real estate listing sites: how a listing gets onto Realtor.com and Redfin

Free real estate listing sites exist in the US, but “free” works differently from a classifieds site. The two big portals we could open, Realtor.com and Redfin, both say their listings come from the MLS, not from a form an agent fills in. So the useful question is not which site is free, but how a listing gets onto it.

We checked each site’s official pages on October 10, 2026. Policies change, so open the link before you decide. What we could not confirm on an official page stayed out. Zillow and Homes.com blocked our browser, so we state no rule for either.

Realtor.com: listings arrive from the MLS

Realtor.com’s help article on missing listings says it downloads listings from most MLS systems every 15 minutes, though a listing can take up to 24 hours to show. If your MLS has an Internet (IDX) or Realtor.com Y/N field, it has to say yes, because that is the permission to display the listing.

The same article lists what does not appear. Realtor.com does not display commercial listings. Some MLSs require a broker opt-in. When two agents work a listing, it shows only for the primary listing agent. The page does not describe a way to type in a listing by hand, so we do not claim there is one.

Redfin: no direct upload either

Redfin’s FSBO help page says Redfin does not let you upload a for-sale-by-owner listing directly. It shows an active one if the home is posted on Fizber.com or FSBO.com, and it takes up to 48 hours to appear. The page also says Redfin’s primary data source is the MLS, and that an MLS listing overrides an FSBO one. Redfin’s page shows it was last updated two years ago, so check that it still holds.

For an agent, the practical reading is the same as for Realtor.com: get the listing into the MLS and let it flow out.

Craigslist: free, with a short list of exceptions

Craigslist’s posting fees page says all postings are free except a list. The real estate lines on it are apartment rentals in the Boston, Chicago and New York City areas ($5) and commercial real estate in the US ($5). We did not find a residential home for sale on the fee list. That is not the same as a guarantee that every category is free for agents, so read the page for the category you use.

The channel with no listing limit

A portal is where buyers search, and your listing should be on them. But there are channels that belong to you.

Instagram is the main one. The account is yours, the followers are yours and the messages come straight to your phone. The limit stops being the portal’s and becomes the time it takes to prepare each post. We wrote the step by step in Instagram for real estate agents.

The other is a Google Business Profile. Google says creating one is free. It is the profile of a business, not of a listing. The guidelines list rental and for-sale properties as ineligible, and say sales or leasing offices are eligible for verification. If you work on your own, read them before you create yours.

What every listing needs, free or paid

There is no single federal rule for an agent’s ad, so we read what we could.

On brokerage name, three states we opened say the same thing in different words. Texas requires the license holder’s name and the broker’s name, and for social media that information can sit on your profile if the post links to it (22 TAC 535.155). Florida requires the licensed name of the brokerage firm in all real estate advertisements (rule 61J2-10.025). California’s Department of Real Estate says electronic media ads carry your name, the broker’s name and your 8-digit license number (DRE table). We did not open the other states, so check yours.

Two federal rules apply everywhere. The Fair Housing Act makes it unlawful to publish an ad that indicates a preference, limitation or discrimination based on race, color, religion, sex, handicap, familial status or national origin (42 U.S.C. 3604(c)). And under Regulation Z, a credit ad that states the down payment, the number of payments, a payment amount or the finance charge also has to state the repayment terms and the annual percentage rate (12 CFR 1026.24). The simple way to stay clear of it: state the price, say $250,000, and leave the monthly payment and the down payment out.

Where to start

Put the listing in your MLS first. According to their own help pages, that is what feeds Realtor.com and Redfin. Whether that step is free depends on your MLS and your brokerage. We did not find an official page that sets what an MLS charges, so we give no figure: ask your broker what your access costs.

Then start the channel you own with the least work: the same listing, with the same photos and the same text, posted to your Instagram too. That work, repeated for every listing, is what eats the most time. With Loopy Studio you send the photos from your phone once, and with Loopy Promotion your listings keep going out every week on your site, your social media and Google. The box below shows how.