Adresa stanovanja je sada nova.

Because adresa is a feminine singular noun in Croatian.

The adjective has to agree with the noun it describes:

• novi = masculine singular
• nova = feminine singular
• novo = neuter singular

So:

• adresa → feminine
• therefore → nova adresa

Even though nova comes later in the sentence, it still matches adresa.

Stanovanja is in the genitive singular.

The base noun is stanovanje = residence / living / housing.
In the phrase adresa stanovanja, Croatian uses a structure that literally works like address of residence.

So:

• adresa = address
• stanovanja = of residence

This is very common in Croatian: one noun is followed by another noun in the genitive to show a relationship.

Similar patterns:

• broj telefona = phone number
• adresa škole = the school’s address / address of the school
• mjesto rođenja = place of birth

Je is the 3rd person singular present tense of biti = to be.

So here it means is.

The sentence structure is:

• Adresa stanovanja = the residential address / address of residence
• je = is
• sada = now
• nova = new

So je is just the normal linking verb connecting the subject to the adjective.

Because Croatian does not use articles like English does.

So Croatian nouns can often mean:

• adresa = an address, the address, or just address

The exact meaning depends on context.

That means Adresa stanovanja je sada nova could be understood as something like:

• The residential address is now new
• The address of residence is now new
• depending on context, perhaps The home address has now changed

English needs an article, but Croatian does not.

It is understandable, but it sounds quite formal or administrative.

You might see it in official contexts, forms, or bureaucratic language. Depending on the situation, Croatian speakers might also say:

• adresa prebivališta = address of permanent residence
• adresa boravišta = address of temporary residence
• kućna adresa = home address
• simply adresa if the context is clear

So the phrase is possible, but it feels more formal than everyday casual speech.

Yes, sada can move around because Croatian word order is fairly flexible.

In your sentence:

• Adresa stanovanja je sada nova.

This is a normal and clear order.

But you could also hear:

• Sada je adresa stanovanja nova.
• Adresa stanovanja sada je nova.

These versions are all grammatical, but the emphasis changes slightly.

Very roughly:

• Adresa stanovanja je sada nova. → neutral
• Sada je adresa stanovanja nova. → stronger focus on now
• Adresa stanovanja sada je nova. → also focuses a bit on now, but still fairly neutral

So sada is an adverb, and its position is flexible.

Yes.

In Croatian, the adjective does not have to stand right next to the noun if it is part of the predicate.

Here the structure is:

• Adresa stanovanja = subject
• je = is
• nova = predicate adjective

So nova is saying something about adresa:

• The address is new

This is different from an attributive structure like:

• nova adresa stanovanja = a new residential address

Both are correct, but they are built differently:

• Adresa stanovanja je nova. = The residential address is new.
• Nova adresa stanovanja... = A new residential address...

No. Only nova agrees with adresa.

Here is the difference:

• nova is an adjective, so it must agree with adresa in gender, number, and case
• stanovanja is a noun in the genitive, so it does not agree with adresa in that way

So:

• adresa = main noun
• nova = adjective describing adresa
• stanovanja = another noun, dependent on adresa

This is why stanovanja stays in the genitive, while nova changes to match adresa.

Yes, depending on context.

Croatian nov often means new, but in real use it can also imply:

• recently changed
• updated
• different from before

So in context, Adresa stanovanja je sada nova may suggest:

• the person now has a new address
• the registered address has been updated
• the residence address is different now

If the context is administrative, that is probably the intended idea.

It is possible, but it sounds less natural in a neutral sentence.

Croatian allows flexible word order, but not every order sounds equally natural in every context.

• Adresa stanovanja je sada nova. → most neutral
• Adresa stanovanja je nova sada. → possible, but sounds more marked or contrastive

The second version might be used if someone is strongly emphasizing now, almost like:

• The address is new now
  as opposed to before.

So it is not exactly wrong, but it is less likely as the default wording.

Yes.

Then you would usually place the adjective directly before the noun:

• nova adresa stanovanja = the new residential address / a new address of residence

Compare:

• Adresa stanovanja je nova. = The residential address is new.
• Nova adresa stanovanja... = The new residential address...

So the same words can appear in different structures depending on whether new is:

• part of the noun phrase itself, or
• something being said about the noun

Yes.

The verb je is present tense, so the sentence is in the present:

• je = is
• sada = now

Together they clearly place the statement in the present moment:

• The address is now new
• or more naturally in context, The address is now updated / has now changed

So grammatically, this is a present-tense statement.