Husnummeret står i gateadressen.

Husnummeret means the house number.

It is built like this:

• hus = house
• nummer = number
• husnummer = house number
• husnummeret = the house number

In Norwegian, compound nouns are very common, so husnummer is one word.

Because Norwegian usually puts the definite article at the end of the noun instead of using a separate word before it.

So:

• husnummer = house number
• husnummeret = the house number
• gateadresse = street address
• gateadressen = the street address

This is one of the biggest differences from English.

Those endings show different grammatical genders.

• husnummeret ends in -et because husnummer is a neuter noun.
• gateadressen ends in -en because gateadresse is a masculine/feminine noun in Bokmål.

A useful rule: in a compound noun, the last part decides the gender.

So:

• nummer is neuter → husnummeret
• adresse is not neuter → gateadressen

Literally, står does mean stands, but in this sentence it is being used in a very common extended sense.

When talking about words, information, or text, Norwegian often uses stå to mean:

• be written
• appear
• be listed
• be stated

So Husnummeret står i gateadressen means something like:

• the house number is written in the street address
• the house number appears in the street address
• the house number is included in the street address

It does not mean that the house number is physically standing somewhere.

I usually means in, and here it shows that the house number is contained within or included as part of the street address.

Norwegian often uses i when information appears inside:

• a text
• a document
• a form
• an address

So står i gateadressen is very natural Norwegian for appears in the street address.

Because Norwegian normally writes compound nouns as one word.

So:

• gate = street
• adresse = address
• gateadresse = street address

Then the definite ending is added to the whole compound:

• gateadressen = the street address

English often separates words where Norwegian joins them, so this is something learners need to get used to.

This sentence has normal main-clause word order:

• Husnummeret = subject
• står = verb
• i gateadressen = prepositional phrase

So it follows the common Norwegian pattern:

• subject + verb + other information

It also fits the Norwegian V2 rule, which means the finite verb usually comes in the second position in a main clause.

For example, you could also say:

• I gateadressen står husnummeret.

That still has the verb står in second position.

Because the sentence is talking about a specific, identifiable house number and a specific street address.

In context, this is like saying:

• the house number
• the street address

Norwegian often uses the definite form when the speaker assumes the listener knows which thing is meant, or when it is obvious from the situation.

Sometimes yes, if the context is clear.

• adressen = the address
• gateadressen = the street address

Using gateadressen is more specific. It makes clear that you mean the street address, not some other kind of address such as:

• e-postadresse = email address
• nettsideadresse / webadresse = website address
• postadresse = postal address

So gateadressen is chosen here for precision.

The base form is stå, which means to stand.

Some useful forms are:

• å stå = to stand
• står = stands / is written / appears
• sto = stood
• har stått = has stood / has been written

In this sentence, står is present tense.