Sameiet møtes i kveld.

Sameiet is the definite singular form of sameie.

• sameie = a co-ownership arrangement, often a condominium / apartment ownership association
• sameiet = the co-ownership / the association

It is a neuter noun, which is why the definite ending is -et.

Because Norwegian usually adds definiteness to the end of the noun instead of using a separate word like English the.

So:

• et sameie = a co-ownership / association
• sameiet = the co-ownership / association

That -et already contains the idea of the.

Yes. Grammatically, sameiet is singular.

Even if it refers to an organization made up of several people, Norwegian treats the word itself as one unit. So the verb is singular too.

This is similar to English sentences like:

• The committee meets tonight.
• The board meets tonight.

Because å møtes means to meet each other or to gather for a meeting.

That is different from å møte, which often means to meet someone/something.

Compare:

• Vi møtes i kveld. = We’re meeting tonight.
• Vi møter læreren i kveld. = We’re meeting the teacher tonight.

In your sentence, møtes is the natural choice because the idea is that the people in the association are gathering / meeting one another.

Not really in meaning.

The -s form in Norwegian can sometimes be passive, but in this sentence it is better understood as a reciprocal idea: the members meet each other.

So Sameiet møtes i kveld does not mean The association is met tonight. It means something like:

• The association meets tonight
• The association is meeting tonight
• The residents’ association has a meeting tonight

It is present tense.

But just like in English, Norwegian often uses the present tense for scheduled or planned future events.

So møtes i kveld literally looks present, but it refers to something happening later today:

• meets tonight
• is meeting tonight

That is completely normal Norwegian usage.

Because that is a very normal word order in a main clause:

subject + verb + time expression

So:

• Sameiet møtes i kveld.

This is the most neutral order.

You can also move the time expression to the front for emphasis:

• I kveld møtes sameiet.

When you do that, Norwegian still keeps the verb in second position. That is the usual V2 word order pattern.

I kveld means this evening or tonight, depending on context.

Literally, it is:

• i = in
• kveld = evening

But as a set time expression, it is usually understood naturally as tonight / this evening.

Yes. This is very common.

Norwegian, like English, often lets an organization stand for the people in it. So sameiet can mean the association as a legal/body unit, but in a sentence like this it really refers to the people involved in it.

So the sentence is understood as:

• the association’s members are meeting
• the residents’ association is meeting
• the condominium association has a meeting tonight

This kind of shorthand is completely natural.

Yes, that is also possible, and it can sound very natural.

Compare:

• Sameiet møtes i kveld. = The association is meeting tonight.
• Sameiet har møte i kveld. = The association has a meeting tonight.

The first focuses more on the act of meeting; the second names it as a meeting. In many contexts, both work.

I kveld is the normal form you should learn and use.

In Bokmål, you may also see ikveld, but i kveld is very common and feels safe in standard written Norwegian. If you are learning, using i kveld is a good habit.