A 58-year-old man attends your family practice for routine review. He has no past medical history and takes no regular medications. Automated office blood pressure readings at three separate visits over 2 months average 145/90 mm Hg. He brings a home blood pressure log showing duplicate morning and evening readings over 7 days averaging 130/82 mm Hg. He feels well and has normal physical examination and baseline investigations. What is the most appropriate next step in management?