'Improv' Comedy Clubs Owner's House That Was Built on Laughs Is For Sale

The guy who helped give Jerry Seinfeld and Larry David their starts in stand-up is looking to unload his Hollywood Hills pad.

Mark Lonow -- a longtime partner at The Improv comedy club franchise -- is selling the 5 bedroom, 3 bath crib for $2 million. He's lived in the 3,700 square foot property for the last 16 years.

Easy to see why Mark, who's also actor and producer, stayed so long -- gorgeous hardwood floors, high vaulted ceilings and a sweet pool and hot tub out back. Adam Mahler at A Team Realty is listing the house, which is deceivingly rustic outside, but you gotta check out the interior.

Good stuff. Almost as good as when Mark got to punch Adam Sandler ...