انا تحت البيت دلوقتي.

In Egyptian Arabic, the verb to be is usually not stated in the present tense.

So:

• انا تحت البيت دلوقتي literally looks like I under the-house now
• but it means I am downstairs / below the building now

This is very normal in Arabic.
You would only use forms of to be in other tenses, like past or future.

Not usually in the strange, physical sense of being under a house.

In Egyptian Arabic, تحت البيت often means something like:

• downstairs
• at the bottom of the building
• outside the building / below the apartment
• sometimes in front of the building

The exact meaning depends on context.
If someone is calling you from the street and says انا تحت البيت دلوقتي, they often mean I’m downstairs now or I’m outside your building now.

So yes, تحت literally means under/below, but in everyday speech this phrase is often idiomatic.

A common pronunciation is:

ana taHt il-bēt dilwa'ti

Notes:

• انا = ana
• تحت = taHt
• البيت = il-bēt in Egyptian pronunciation
• دلوقتي = dilwa'ti or delwa'ti

A few pronunciation details:

• The H in taHt represents ح, a stronger throat sound than English h.
• The ' in dilwa'ti represents ء, a glottal stop, like the break in uh-oh.
• الـ is often pronounced il- in Egyptian Arabic, not al-.

Because this is Egyptian Arabic, not Modern Standard Arabic pronunciation.

In Egyptian Arabic:

• الـ is commonly pronounced il-
• بيت is usually pronounced bēt

So:

• MSA-style pronunciation: al-bayt
• Egyptian pronunciation: il-bēt

Both refer to the house / the home, but the Egyptian form is what fits this sentence.

دلوقتي means now or right now, and yes, it is extremely common in Egyptian Arabic.

You may also see or hear variants like:

• دلوقت
• دلوقتي
• transliterated as dilwa'ti, delwa'ti, etc.

All of these are normal in Egyptian speech.
In this sentence, دلوقتي adds the idea of right now / at the moment.

Yes, Egyptian Arabic allows some flexibility in word order.

These can all work, depending on emphasis:

• انا تحت البيت دلوقتي
• انا دلوقتي تحت البيت
• دلوقتي انا تحت البيت

The basic meaning stays similar: I’m downstairs now.

The difference is usually emphasis:

• انا تحت البيت دلوقتي = neutral, natural
• انا دلوقتي تحت البيت = emphasizes now
• دلوقتي انا تحت البيت = stronger focus on right now

Not always.

Since there is no present-tense am, speakers often include انا for clarity, but in context they may drop it:

• تحت البيت دلوقتي = (I’m) downstairs now

If the situation already makes the subject obvious, dropping انا is very natural in conversation.

Still, for learners, keeping انا is useful and clear.

Because البيت means the house / the home / the building, while بيت means a house / a home.

In this sentence, the speaker usually means a specific place already known to both people, such as:

• your building
• the house
• home

So the definite article الـ makes sense here.

It can mean different things depending on context.

In Egyptian Arabic, البيت can refer to:

• the house
• the home
• sometimes the residential building/apartment building in everyday speech

In this sentence, if someone says انا تحت البيت دلوقتي, it often means they are outside or downstairs at the building where you live.

So the most natural English translation may be:

• I’m downstairs now
• I’m outside the building now
• I’m down by the house now

A more MSA-like version would be something like:

• أنا تحت البيت الآن

or, depending on the intended meaning,

• أنا أمام البيت الآن = I am in front of the house now
• أنا أسفل البيت الآن = I am below the house now

But in real Egyptian everyday speech, انا تحت البيت دلوقتي is very natural and common.

Also note:

• Egyptian دلوقتي corresponds to MSA الآن
• Egyptian pronunciation and idiomatic usage are different from MSA

It is informal, everyday Egyptian Arabic.

That is exactly the kind of sentence people would use in a phone call, text, or casual conversation.

For example, someone arriving to pick you up might say:

• انا تحت البيت دلوقتي

meaning:

• I’m downstairs now
• I’m outside now

So this is a very practical colloquial sentence, not a formal one.