PropStream vs MLS: What Each One Shows and Who Can Use It

Key Takeaways

• PropStream and the MLS do different jobs: the MLS is a broker listing database, while PropStream is a subscription data tool anyone can buy that mixes public records with MLS-sourced data.
• Full MLS access generally requires a real estate license, and PropStream itself says it is "not a substitute for MLS access".
• NAR's 2025 Profile of Home Buyers and Sellers found 91% of sellers used an agent and only 5% of homes sold as For Sale By Owner, so agents still need the MLS.
• PropStream plans cost $99, $199 or $699 per month, while Goliath's Ramp, Growth and Scale plans cost $1,499, $2,999 or $7,499 per month.
• Goliath finds off-market motivated sellers through signals such as pre-foreclosure, probate and tax delinquency, and does not replace an agent's MLS login.

Goliath Data publishes this guide, and Goliath appears in the comparison below. We read Goliath's and PropStream's own sites on November 5, 2026, and prices and features can change.

PropStream vs MLS is not a straight fight, because they do different jobs. The MLS is a database brokers use to share listings, and getting full access generally means holding a real estate license. PropStream is a subscription data tool anyone can buy, mixing public records with MLS-sourced data so you can find owners who have not listed.

Agents need the MLS and may add PropStream. Investors without a license usually start with PropStream or something like it. Even PropStream says so plainly: it is "not a substitute for MLS access".

How do PropStream, Goliath and the MLS compare at a glance?

Goliath comes first on two neutral criteria, owner signals and outreach in one subscription. It costs far more than PropStream, and on active listings the MLS is the reference point.

Sources are Goliath pricing, PropStream pricing, and the Cornell Legal Information Institute's MLS entry.

What does the MLS do that PropStream cannot?

Cornell defines an MLS as a database cooperating brokers create and use to share listing information. It adds that much of that information is public, but unrestricted access, including seller contact details and showing availability, is limited to licensed agents and brokers who pay for a subscription.

That restricted layer is the point. If you represent buyers, schedule showings or list homes, you need it, and PropStream itself says the MLS offers benefits it cannot replicate.

Agents also still handle most sales. NAR's 2025 Profile of Home Buyers and Sellers, covering sales from July 2024 through June 2025, found 91% of sellers used an agent, and only 5% of homes sold as For Sale By Owner.

The data can have soft spots of its own. PropStream notes that agents enter MLS data by hand, so it is only as complete as the people keying it in.

What does PropStream do that the MLS does not?

Here is the gap. By the time a house is on the MLS, a listing agent already has it. That is great for buyers' agents and useless for anyone hunting sellers who have not raised a hand, which is why PropStream's own blog says the MLS "is not a lead generation tool".

PropStream fills that with public record detail: 160+ million properties, 308+ million deeds and sales, 185+ million mortgage records and 41+ million pre-foreclosures, per its home page. Add owner history, linked properties, equity estimates, skip tracing, email and direct mail, and you have a prospecting tool rather than a listing tool.

There is a bridge between the two as well. PropStream lists Failed Listings, properties that did not sell through the agent, and calls them a sign the owner may be motivated. Its lead list definitions include active, pending and contingent MLS statuses too. Agents can do the same hunting by hand with this guide to finding expired listings on the MLS.

Can you run comps without the MLS?

Investors usually land on this comparison wondering whether they can run comps without a license. PropStream says yes, and lets you run them on public records, MLS data or both. That is a fair claim, with limits worth knowing.

Public records catch more sales, more slowly. Off-market sales appear in county records but never in the MLS. PropStream says recording can take weeks, which is why it also offers MLS sold data for fresher numbers.

MLS listings say more about condition. Pictures and descriptions come from the listing, while public records show when a house was built but not its upgrades, as PropStream points out. Its FAQ lists permit gaps and mis-keyed MLS entries as reasons bed and bath counts can disagree.

Non-disclosure states are where this bites. PropStream's FAQ lists Alaska, Idaho, Kansas, Louisiana, Mississippi, Missouri (some counties), Montana, New Mexico, North Dakota, Texas, Utah and Wyoming as states where sale prices are not publicly available, and says companies other than agents and brokers must estimate them. Its 2022 update said MLS sold data came back through a proprietary algorithm designed to meet MLS requirements. If you invest in Texas, ask exactly what the sold price on your screen represents.

For a wider look at sources, see these tools for finding comparable sales.

How fresh is MLS data compared with PropStream data?

The MLS is built around live listing status. PropStream describes it as updated in real time. Its own FAQ says its MLS data updates daily, vacancy data monthly and tax assessor data annually, with some counties faster.

So a hot new listing belongs to the MLS, while a pre-foreclosure filing shows up wherever that county's records and each vendor's refresh schedule allow.

Where does Goliath fit between PropStream and the MLS?

Goliath is aimed at the seller-finding job, not at replacing an agent's MLS login. Lists come from signals including pre-foreclosure filings, probate, tax delinquency, equity and tenure, absentee ownership, and expired or withdrawn listings, each with its source kept on the record.

Goliath's refresh timing varies by source and market. Its published trace numbers are 99% match and 85% accuracy, and it does not bill misses. CRM, dialer, texting and David, the AI voice agent, are built in. Pricing is premium, with no free trial. Our Goliath vs PropStream page goes further.

Which do you need?

• Licensed agent working buyers: the MLS, full stop. Add a prospecting tool if you want listings of your own.
• Agent chasing listings: both, since the MLS will not surface unlisted sellers.
• Unlicensed wholesaler or flipper: a data tool, plus a friendly agent for showings and condition checks. PropStream's trial or a signal-based system both work as a start.
• Team running outbound every week: look at what connects the data to the conversation. That is where Goliath or PropStream plus a CRM earns its keep.

Worth asking too: why many flips never reach the MLS at all.

What rules apply to MLS data and outreach?

MLS data comes with requirements of its own, as PropStream's 2022 update hints, so ask your MLS before you export or republish anything. Outreach is a separate matter: put the question of whether an offer to buy a house counts as telemarketing to your lawyer, assume calls and texts are covered, and read the FTC's Telemarketing Sales Rule guide. This is not legal advice.