Surnames

Are these punctuated correctly for the plural possessives?

•The Stevenses' house (Surname: Stevens)
•The Baraches' garden (Surname: Barache)
•The Rodriguezes' property (Surname: Rodriguez)
•The Coxes' restaurant (Surname: Cox)
•The Goronskys' house (Surname: Goronsky)
•The Joneses' trip to Atlanta (Surname: Jones)
•The Rogerses' investment (Surname: Rogers)
•The Hastingses' new pool (Surname: Hastings)

Thank you.