As if Italian was not confusing enough already with its prepositions for going to places, the preposition da provides an extra level of complication.

Use this preposition when you are going to a friend or family member's home, the mechanic, the doctor's office and a few other places.

Here are some common examples:

dall'avvocato to the lawyer's office

dal dentista to the dentist/dentist's office

da Maria to Maria's (house)

da me/te/lui/lei at my/your/his/her house

da noi/voi/loro at our/your/their house

dal meccanico to the mechanic's

dal medico to the doctor/doctor's office

dallo zio at my uncle's (house)