The talented Dundalk golfer has been making his mark around the world for several years with high-profile wins and showcasing disability golf to a wider audience.
The 22-year-old will now embark on a new golf journey in the paid ranks with key support from one of the game's leading management companies headed up by owner Niall Horan.
"We are thrilled and very proud to welcome Brendan to Modest! Golf," said Horan. "Brendan is an incredible athlete and one of the best disability golfers in the world. He is an inspirational character and has a genuine winner's mentality."
Lawlor added: "I have enjoyed a very successful amateur career and believe this is the right time to turn professional. I am delighted to have signed with Modest!."
