A portaria do condomínio tem interfone novo e fica aberta até tarde.

In Brazilian Portuguese, portaria usually means the entrance area, gatehouse, front desk, or the concierge/security area of a building or gated residence.

In this sentence, it does not mean the person. It refers to the place or service at the entrance of the condominium.

So A portaria do condomínio is something like the condo entrance desk/gatehouse/concierge area.

Do is the contraction of de + o:

• de = of
• o = the
• do = of the

So:

• a portaria do condomínio = the entrance desk of the condominium

This kind of contraction is very common in Portuguese:

• de + a = da
• de + os = dos
• de + as = das

Tem is the third-person singular form of ter.

Here it means has:

• A portaria ... tem interfone novo = The entrance desk/gatehouse has a new intercom

In everyday Brazilian Portuguese, ter is also often used where English might use there is/there are, but in this sentence the idea is straightforward possession: the portaria has something.

Interfone means intercom.

In Brazil, this usually refers to the communication system used at the entrance of a building or condominium so visitors can call residents.

So interfone novo means a new intercom.

Portuguese often leaves out the indefinite article where English would naturally use a or an.

So:

• tem interfone novo literally looks like has new intercom
• but naturally means has a new intercom

You could say tem um interfone novo, and that would also be correct. Leaving out um is very normal, especially in general statements.

In Portuguese, adjectives often come after the noun.

So:

• interfone novo = new intercom

This is the most neutral, common order.

Sometimes adjectives can go before the noun, but that often changes the tone or emphasis. For a simple descriptive meaning, noun + adjective is standard.

Here ficar means something like to remain, to stay, or to be left in a certain state.

So:

• fica aberta até tarde = stays open until late

If you said está aberta, that would describe its current state: it is open.
But fica aberta até tarde gives the idea of a regular condition or schedule: it remains open until late.

That is why ficar works very well here.

Because aberta agrees with portaria, which is a feminine singular noun.

• a portaria = feminine singular
• so the adjective must also be feminine singular
• aberta = feminine singular form of aberto

This kind of agreement is very important in Portuguese.

Até tarde means until late or until late at night, depending on context.

It does not give a precise clock time. It just means the place stays open later than usual or later into the evening/night.

Examples:

• Ela trabalha até tarde. = She works until late.
• O restaurante fica aberto até tarde. = The restaurant stays open until late.

The subject of both verbs is A portaria do condomínio.

So the structure is:

• A portaria do condomínio = subject
• tem interfone novo = first statement about it
• e fica aberta até tarde = second statement about the same subject

Portuguese often avoids repeating the subject when it is already clear.

So this is like saying:

• The condo entrance desk has a new intercom and stays open until late.

Usually, not in this sentence.

Doorman refers to a person.
Portaria usually refers to the entrance area, concierge station, or the reception/security service itself.

If you wanted to talk about the person, you might use words like:

• porteiro = doorman / gatekeeper / concierge
• recepcionista = receptionist

So here portaria is the place/service, not the employee.

It most naturally sounds like a general fact or regular situation.

That is because:

• tem can describe what it normally has
• fica aberta até tarde sounds like a routine or usual schedule

So the sentence suggests something like:

• the condominium entrance/concierge area has a new intercom
• and it normally stays open until late

If you wanted to emphasize a temporary situation happening right now, Portuguese would often use other wording, such as está aberta.