EMB Phenom 300 pilot reported a ground conflict with another aircraft during taxi resulting in a taxi way excursion.

Narrative

While initiating a turn onto Taxiway 1 (approximately 33 feet wide) I noted a single engine aircraft parked on the apron of a hangar off the left hand side of the taxiway. Although it was not encroaching upon the taxiway; it looked as though there might not be enough clearance from my wingtip to the nose of the aircraft. Correcting to the right side of the taxiway to ensure a safety margin; the right main rolled onto the adjacent turf. Once my wingtip was safely past the tip of the parked airplane; I regained the taxiway centerline. Taxiing and braking remained nominal. Upon shutdown; I inspected this area along with an experienced mechanic and there was no damage to the wheel; gear; or gear door. Upon returning to the airport later in the day; the aircraft remained unmoved. I stepped off the distance from the taxiway centerline to the spinner of the aircraft and it was 21 feet. The Phenom 300e has a wingspan of 52 feet and therefore would have collided with this airplane had I not corrected to the right side of the taxiway.I am reporting this occurrence as I recently had difficulty with this same issue.I spoke with the operator of the parked aircraft to underline the importance of ensuring that his aircraft is always positioned well away from the edge of this narrow taxiway; and demonstrated how this creates a collision hazard. He was extremely apologetic and assured me that he would maintain additional clearance from the taxiway edge.Additionally; I plan to speak with the director of the FBO to ensure he makes all of his line crew are aware of this problem. Although I spoke with the line crew after the original occurrence; there continues to be a problem with positioning of aircraft in this area; especially with their younger and less experienced crew. Moreover; the airport authority needs to communicate this issue with all tenants/operators.Lastly; it has become apparent that if any aircraft are parked on their respective hangars' aprons in this area; I will require that either the FBO and/or the owners to reposition or re-hangar their aircraft before I even start my airplane. There is simply not enough safety margin to maintain the taxiway centerline and remain clear of any conflict.