هاد بيت كبير.

هاد means this. In many Levantine accents, it is pronounced roughly haad.

You may also hear other regional forms such as هيدا or هاظ. They all do the same basic job: pointing to something near the speaker.

In Arabic, the present-tense verb to be is usually left out in simple sentences like this.

So Arabic says something like:

• this + house + big

but the meaning in natural English is:

• This is a big house

This is completely normal in both spoken Levantine and Standard Arabic.

Because in Arabic, adjectives normally come after the noun they describe.

So:

• بيت كبير = a big house
• literally: house big

This is the regular word order in Arabic.

Because هاد بيت كبير means This is a big house, where بيت كبير is indefinite: a big house.

But هاد البيت الكبير means something more like this big house or this house, the big one, where the noun phrase is definite.

A useful contrast is:

• هاد بيت كبير = This is a big house
• هالبيت كبير = This house is big

So the structure changes the meaning.

Yes. Arabic adjectives agree with the noun they describe.

Here, بيت is:

• masculine
• singular

So the adjective is also masculine singular:

• كبير

If the noun were feminine, you would usually use:

• كبيرة

بيت is grammatically masculine.

That is why the sentence uses:

• هاد rather than a feminine form
• كبير rather than كبيرة

Because بيت is masculine.

In many Levantine varieties, the demonstrative changes with gender:

• هاد / هيدا = this for masculine
• هاي / هيدي = this for feminine

Since بيت is masculine, هاد is the expected form. Exact forms can vary from one country or city to another.

It is Levantine Arabic.

The Modern Standard Arabic version would usually be:

• هذا بيت كبير

The sentence structure is very similar, but the form of this is different.

They are close in meaning, but not the same.

• هاد بيت كبير = This is a big house
• هالبيت كبير = This house is big

So:

• in هاد بيت كبير, you are identifying what something is
• in هالبيت كبير, you are talking about a specific house and describing it

This is a very important distinction in everyday Arabic.

It can mean both house and home, depending on context.

In everyday Arabic, بيت is a very common word for:

• a house
• a home
• someone's place

In this sentence, house is the most natural translation, but in other contexts home may fit better.