EXCLUSIVE: As she is wrapping her starring turn on ABC’s Private Practice, Kate Walsh is embarking on a producing career with a comedy project written by Retired At 35 creator Chris Case, which just sold to NBC. The untitled multi-camera half-hour, from 20th Century Fox TV, is loosely based on the personal experience of Walsh and Case, who are a couple. It centers on a recently divorced father of two pre-teen boys that quickly falls in love with a freewheeling woman cop who has little experience with children, while dealing with his ex-wife, who is now living with his best friend. Walsh and Case will executive produce with Aaron Kaplan of Kapital Entertainment.

This past summer, Walsh announced that she would be leaving Private Practice after 13 episodes of the current sixth season. Walsh, repped by CAA and Evolution, has played the character of Addison Montgomery for 7 years, starting on Grey’s Anatomy before she got her own spinoff Private Practice. She is currently seen in breakout indie Perks Of Being A Wallflower and has a cameo in the upcoming Scary Movie 5.

This is the second sale this season for comedy veteran Case, who has comedy The Club set up at CBS though CBS TV Studios and studio-based Tannenbaum Co. It centers on a down-on-his-luck golf pro who tries to find his mojo in the midst of the inner workings of a country club. Case, repped by CAA, Evolution and Jared Levine, is currently consulting on ABC’s Malibu Country. This marks the 11th broadcast sale for Kaplan this season, including two pilot production commitments, one for a Robb and Mark Cullen comedy at ABC and one for a Cathy Yuspa-Josh Goldsmith half-hour at NBC.