is it appropriate for me to ask if i could come to a funeral or any memorial service??

my neighbor died last tuesday and i just heard about it this morning. He was a great neighbor actually. the one that never caused any problems and always in out of people's way. he always kept to himself unless somebody approached him with saying "good morning". our chats were always small talk but i knew he was a good person just by him making sure the front door was open when he was outside when i had groceries. he smoked and was the only one who smoked outside of the building and always made sure he never left a trail. I dont know what he was going through but i will miss him. now im wishing i did more than just small talk because if he was going through something, he'd be somebody i wouldnt mind helping and being there for him to make sure he's honestly doing ok each day. My first thought was that maybe he died of old age because he was almost 60. but i was reading his obituary and it said "Memorials in his memory are preferred to "Mission 22"" mission 22 is a nonprofit organization for veterans that commit suicide 😖😭😭💔 even tho im not really family or friends, is it still appropriate for me to ask promission from his family if i can go to see him one last time?