Martinez has only been at Goodison Park for one season but led the Merseyside club back to Europe and developed an attractive side who pushed Arsenal all the way for a top four spot.
Everton did utilise the loan market well and so work will have to be done again this summer to improve but their chairman is confident they are in safe hands.
Kenwright could not be happier with the Spaniard and feels a five-year deal was just rewards for a fine first 12 months at the club.
“In many commentators’ eyes, Roberto Martinez is the best young manager in Europe. We agree,” Kenwright said.
“He took on an unfamiliar challenge for most managers; to take something really good and make it even better.
“He has succeeded. In his debut season he broke our Premier League record points haul, got us back into Europe and developed some of the most exciting young footballers in the game.
“He conducts himself off the pitch in the same way. He undertakes his business with great style, confidence, positivity and class. He is an Everton man.
“There is no magical ingredient to what we do at Everton. We’re a football club and we recognise the fundamental importance of our manager.”