Nhà này thuộc gia đình tôi.

A simple breakdown is:

• nhà = house / home
• này = this
• thuộc = belong to / be under
• gia đình = family
• tôi = I / me / my

So the structure is roughly:

• nhà này = this house
• thuộc gia đình tôi = belongs to my family

In Vietnamese, demonstratives like này (this) usually come after the noun.

So:

• nhà này = literally house this
• natural English = this house

This is a very common Vietnamese pattern:

• người này = this person
• xe này = this vehicle / this car
• cuốn sách này = this book

Thuộc often means to belong to, to be under, or to fall under something.

In this sentence, it shows ownership or association:

• Nhà này thuộc gia đình tôi = This house belongs to my family

You may also see thuộc về, which gives a similar idea:

• Ngôi nhà này thuộc về gia đình tôi = This house belongs to my family

In everyday speech, thuộc về can sound a little more explicit for possession.

Vietnamese often does not need a copula like English is/are in the same way.

In this sentence, thuộc is the main verb, so no extra is is needed:

• English: This house is owned by / belongs to my family
• Vietnamese: Nhà này thuộc gia đình tôi

If you use là, the sentence structure changes:

• Nhà này là của gia đình tôi = This house is my family’s / This house is owned by my family

So Vietnamese can express the same idea in more than one way.

Yes. Vietnamese commonly expresses possession by putting the possessor after the noun:

• gia đình tôi = my family
• literally: family + I/me

This same pattern appears in many phrases:

• nhà tôi = my house / my home
• bạn tôi = my friend
• sách tôi = my book (though often cuốn sách của tôi is clearer)

So gia đình tôi is completely normal.

Yes, it is grammatical and understandable, but it can sound a little formal or matter-of-fact, depending on context.

In everyday speech, many speakers might say:

• Nhà này là của gia đình tôi.
• Ngôi nhà này là của gia đình tôi.
• Đây là nhà của gia đình tôi.

These often sound more conversational when talking about ownership.

So your sentence is fine, but it is not the only natural option.

Yes. Nhà can mean both house and home, depending on context.

For example:

• Tôi về nhà. = I’m going home.
• Nhà này đẹp. = This house is beautiful.

In Nhà này thuộc gia đình tôi, the meaning is more clearly house because the sentence is talking about ownership of a physical place.

Not always. Nhà này is perfectly fine.

However, Vietnamese can also use a classifier or noun marker for a house, especially in more careful or descriptive speech:

• căn nhà này
• ngôi nhà này

Both can mean this house.

Very roughly:

• nhà này = simple and common
• căn nhà này = often emphasizes the unit/building
• ngôi nhà này = often sounds a bit more literary or descriptive

So you do not have to add one, but you may see them.

Nhà tôi usually means my house/home, but that is not exactly the same as my family’s house.

Compare:

• nhà tôi = my house / my home
• nhà này thuộc gia đình tôi = this house belongs to my family

Using gia đình tôi makes the ownership broader: the house belongs to the family as a whole, not just to me personally.

So the choice depends on what you want to emphasize.

The pattern is:

• noun + demonstrative + verb + possessor

So:

• nhà = house
• này = this
• thuộc = belongs to
• gia đình tôi = my family

That gives:

• Nhà này thuộc gia đình tôi.
• literally: House this belongs to family my.
• natural English: This house belongs to my family.

This kind of word order is very normal in Vietnamese.