LOS ANGELES

WHEN Emily Cook, a screenwriter, bought a house four years ago in Eagle Rock, a neighborhood on the Northeast side of Los Angeles, she fantasized what the area might look like in a year or two, with cafes and boutiques replacing tattered old businesses. “It was like fantasy football,” said Ms. Cook, 38, who also sings in a band named Fonda.

A sad flower shop on the corner, she thought, could become a miniature Whole Foods. An upholstery store could be a gastropub where she and friends would grab a beer, and a neglected 1940s diner could become a retro spot for a quick meal.

But Ms. Cook has stopped fantasizing about what might be, and started worrying about what might shut down. The flower store has closed; no gourmet market is moving in. Lucy Finch, a vintage boutique, folded last month. That Yarn Store, a hangout for crochet-heads, didn’t survive a bad winter.

And what will become of the storefront that once housed Blue Heeler, which sold Australian imports?

“Please don’t make it another martial arts studio,” Ms. Cook pleaded. “What is it about Eagle Rock and martial arts?”