CarHag blog · November 11, 2026

How to spot a dealer posing as a private seller

Published November 11, 2026, from CarHag's listing data for October 5 to November 4, 2026

Around Houston, only half of used car listings come from true private sellers. In 30 days CarHag counted 18,421 listings on Facebook Marketplace, Craigslist and OfferUp, and judged 9,203 of them private. The rest came from dealers, flippers or likely dealers.

Why it matters

It shows in the price. Private sellers asked a median 5.5% under CarHag's market estimate. Everyone else asked a median 7.3% over it. If you're buying to resell, you're looking for the first group.

It can also be a legal problem for the seller. Selling cars as a business without a license is called curbstoning, and it often comes with a title that isn't in the seller's name. See how to flip cars legally in Texas.

Seven signs to check

These are the signs CarHag scores on every listing.

1. Dealer wording. "We finance", "bad credit OK", "our inventory", "come see us", or a stock number.
2. Dealer-style prices. $14,995 or $18,088 where an owner would write $15,000.
3. The same seller on several cars. One phone number or profile on four or more cars is a lot. Two or three points to a flipper.
4. A business name as the seller. "Auto", "Motors" or "Sales" in the profile name.
5. A down-payment price. The number in the listing is the down payment, and the real price is far higher.
6. Paid promotion. Owners rarely pay to boost a single car.
7. Flipper tells. "Open title", "bought at auction" or "I have more cars".

One sign isn't proof

A private seller can pick an odd price or mention financing. Look for two or three signs together. CarHag adds them up and labels each seller as private, likely dealer, flipper or dealer.

What to ask

• Is the title in your name?
• How long have you owned it?
• Can I see your ID next to the title?

A real owner answers these without trouble. If the name on the title isn't the person in front of you, walk away.

Common questions

How many Facebook Marketplace car listings are from dealers?

In CarHag's 30-day count of 18,421 Houston-area listings across Facebook Marketplace, Craigslist and OfferUp, only 50% looked like true private sellers. The rest were dealers, flippers or likely dealers.

What is curbstoning?

Selling cars as a business without a dealer license, often while posing as a private owner. In Texas, TxDMV's disciplinary matrix lists $1,000 per vehicle and up for an unlicensed dealer.

Is it bad to buy from a dealer on Marketplace?

Not always. But if you're buying to resell, price is what matters, and in CarHag's data dealers and flippers asked a median 7.3% over market while private sellers asked 5.5% under.