Finally, you’ve done it: You’ve scoured the market for available homes—and then some—and found one you can’t stop thinking about. It’s time to make an offer!

But before you put your money on the line, take a peek around the neighborhood. We won’t use a certain cliché, but there is a reason the pros emphasize location when buying real estate. You can change your house—but you can’t change the neighborhood. And if your hood is on the decline, you just might have a helluva time offloading your home when you decide to sell.

A bad neighborhood isn’t always obvious, though; sometimes you need to do a little digging to know if a community is worth buying in. Luckily, we’ve identified seven red flags that should give you pause before you sign on the dotted line.

Red flag No.1: Too many houses are on the market

There’s nothing wrong with two or three listed houses on the same street. But if you see an army of “For Sale” signs, consider looking elsewhere.

“This points to illiquidity in the market and pricing pressure, which is a risk for buyers,” says Alison Bernstein, the founder of Suburban Jungle, which helps families find their ideal suburb.

Of course, the hue of this particular red flag depends on the reason for those “For Sale” signs. Perhaps the neighborhood is rapidly gentrifying and longtime residents have decided to cash in. Or maybe there’s a more sinister explanation, like increasing crime rates. Your agent can help you assess the situation before making any big moves.