NEW YORK ( TheStreet) -- Start-up Thumbtack is looking to change the way people find local services, like babysitters, window cleaners and dog walkers. Rather than combing through bulletin boards or aimlessly asking friends for references, Thumbtack provides an online marketplace for professionals to post their services. Thumbtack is hoping to outdo other players in the local space like Yelp, Craigslist, and Angie's List by letting users book services through the site, compare price quotes and check the credentials of its professionals. The company sees itself as providing transparency to a historically opaque market, highlighted by sites like Groupon in which consumers can't be sure if the deals for local services they're getting are actually a bargain. We spoke to Thumbtack CEO Marco Zappacosta at the start-up's office in San Francisco's SOMA area to learn a bit about the company. -- Written by Olivia Oran in New York. >To follow the writer on Twitter, go to http://twitter.com/Ozoran. >To submit a news tip, send an email to: firstname.lastname@example.org.