What happens after purchase agreement?

Matt is a fantastic sales representative who wears the face of Robertson Brothers very well, working with him during the home buying process was a joy and effortless. My next home purchase (in 5 year) I will definitely be reaching out to Matt at Robertson. Noel is by far the hardest worker in the entire Robertson Brothers company, and I mean that with all sincerity. I checked on my home builder progress on a weekly basis and now matter how busy Noel was he always made sure to say hello to me and answered any questions I had. I only called/texted him a couple times and he got back to me in minutes every time. He even helped me with two warranty issues after I moved in and he resolved each within 24 hours of me texting him. This guy is fantastic and I seriously hope his hard work is appreciated within the company.