Mark has been my CPA since I opened my own real estate brokerage 14+ years ago. We had offices on the same floor. Not only was he remarkably helpful at getting me, a novice in the industry at the time, properly set up for doing business by the book but he's always responsive, knows his stuff like the back of his hand, and really understands each client's individual needs. I've recommended him on countless occasions and hes also been a generous source of referrals for my business as well. I'd never consider using anybody else. You shouldn't either!