MESSMAKER
Veteran Member
I mow a good bit of commercial stuff and have done do for the last 8 years. I have done it with a 27hp tractor and several different 5 foot cutters. If you ask the experts, I am under powered. I have mowed hundreds of acres over the course of hundreds of hours. I do 99% in mid range at full speed. I only struggle in thick wet grass or very steep grades. 15 acres is not a back breaker to maintain. You can plan on mowing 5 acres in about 3 hours so you can knock it out in a few evening or one weekend. A 35 hp tractor is about the sweet spot and should do you well, but you can make do with less. If you go much bigger, you get into a tractor that is powerful, but bigger and heavier. This works against you sometimes. It requires a larger truck and trailer if you need to move it or take it to the shop. My neighbor has a 55 hp tractor but he uses mine a good bit because it is more nimble, easier on the turf and way easier to move. It also uses about 1/2 the fuel. That being said, his will do twice the work in the right circumstance. A couple suggestions, Get a loader, consider a susp. seat and hydo tranny. Shuttle is pretty good, but a gear tractor makes most jobs a bit harder.