Wij wonen niet meer in het oude huis.

Because wij means we, and with we/you(plural)/they in the present tense, Dutch usually uses the same form as the infinitive.

So:

• ik woon = I live
• jij woont = you live
• hij/zij woont = he/she lives
• wij wonen = we live
• jullie wonen = you all live
• zij wonen = they live

So wonen is the correct form with wij.

Yes. In everyday Dutch, we is very common and often sounds more natural in speech.

So both are correct:

• Wij wonen niet meer in het oude huis.
• We wonen niet meer in het oude huis.

Very roughly:

• we = common, neutral, everyday
• wij = a bit more emphatic, clearer, or slightly more formal

In many situations, Dutch speakers would probably say We wonen niet meer in het oude huis.

Wonen specifically means to live somewhere / to reside. It is about where you live.

• Ik woon in Amsterdam. = I live in Amsterdam.

Leven means to live in the broader sense of being alive, having a life, or living in a certain way.

• Hij leeft nog. = He is still alive.
• Zij leven eenvoudig. = They live simply.

So in this sentence, because it is about a place of residence, wonen is the right verb.

Niet meer means no longer / not anymore.

So:

• Wij wonen niet in het oude huis. = We do not live in the old house.
• Wij wonen niet meer in het oude huis. = We no longer live in the old house.

That little word meer adds the idea that this used to be true before, but now it is not.

Not always in the way an English learner may expect.

By itself, meer often does mean more:

• meer koffie = more coffee

But in the fixed combination niet meer, it means no longer / not anymore.

So in this sentence, you should understand niet meer as one unit of meaning, not as separate not + more.

In Dutch main clauses, adverbs like niet often come before a prepositional phrase such as in het oude huis.

So the structure is:

• Wij = subject
• wonen = verb
• niet meer = negation + “no longer”
• in het oude huis = place

This is the most natural neutral word order.

Dutch word order is not always identical to English. English says:

• We no longer live in the old house.

Dutch puts the verb earlier and then places niet meer before the location phrase.

It is possible in some contexts, but it is not the normal neutral version.

Wij wonen niet meer in het oude huis is the standard, natural sentence.

Putting niet meer later:

• Wij wonen in het oude huis niet meer

can sound marked or contrastive, as if you are focusing especially on in the old house.

So for a learner, the safest pattern is:

• subject + verb + niet meer + place

Because Dutch adjectives usually take -e before a noun when they are used with an article.

So:

• het oude huis = the old house
• een oud huis = an old house

This is a very common pattern in Dutch adjective endings.

Why no -e in een oud huis?
Because huis is a het-word (a neuter noun), and with een + singular het-word, the adjective usually has no -e.

Compare:

• het oude huis
• een oud huis

But:

• de oude auto
• een oude auto

Because huis is a het-word in Dutch.

Dutch nouns have two article types in the singular:

• de
• het

You generally have to learn which nouns take which article.

So:

• het huis = the house
• een huis = a house

A useful thing to remember: all diminutives take het, but huis is simply a regular noun that happens to be a het-word.

Because in is a preposition meaning in, and when it is followed by a noun phrase with a definite article, you get:

• in + het oude huis

So:

• in = in
• het oude huis = the old house

Together: in het oude huis = in the old house

In informal speech, in het is often pronounced more like in ’t, but in normal writing in het is perfectly standard.

A few things may help:

• wij sounds roughly like English why
• wonen starts with a Dutch w, which is usually softer than English w and can sound a bit like a mix between English w and v
• the o in wonen is a long vowel: WO-nen

Very roughly:

• Wij wonen ≈ why WOH-nuh(n)

Also, in fast speech, wij may be reduced less often than we, which is another reason we wonen sounds very natural in conversation.

Yes, but the meaning changes slightly.

• Wij wonen niet in het oude huis.
  = We do not live in the old house.

This could simply be a factual statement, with no idea about the past.

• Wij wonen niet meer in het oude huis.
  = We no longer live in the old house.

This clearly suggests that you used to live there before, but now you do not.

So meer is important if you want the sense of no longer.