EMB-145 flight crew reported an EGPWS Alert on approach.

Narrative

I was cleared base to final at 3000 ft. MSL into ZZZ Runway XX. I was in visual conditions and had all terrain and obstacles in sight and clear. Upon making my descent on base; I received a terrain warning and a gear proxy alert as I was commanding the gear be dropped. I continued visually on the approach and made a safe landing. Upon further retrospection; I could have held my descent another 15 seconds; but I had evaluated that I was clear of the terrain; upon my descent. On the other hand the EGPWS system momentarily disagreed with this as the gear was not down yet. I have read the company policy upon visual arrivals into ZZZ and; I fully agree with this approach though I was complying with it at the time. I do believe that holding the descent another 15 to 30 seconds would have made a difference and this would not have been an event. I could have held my descent for about 10 seconds and that would have fixed the event. I was in the process of calling for gear down; and that would have also kept this even from occurring.