यह भवन बड़ा है।

A natural pronunciation is:

yeh bhavan baṛā hai

A few pronunciation notes:

• यह is often pronounced yeh in normal speech, even though learners sometimes see it explained as yah.
• भवन is bha-van. The भ is an aspirated b sound, roughly bh.
• बड़ा is ba-ṛā. The ड़ is a flapped sound, not a plain English d.
• है is usually pronounced something like hai.

So the whole sentence sounds roughly like:

yeh bhavan baṛā hai

Here is the breakdown:

• यह = this
• भवन = building
• बड़ा = big
• है = is

So the structure is:

this + building + big + is

Hindi often puts the adjective before the verb है, and the verb comes at the end.

Because बड़ा agrees with भवन, and भवन is masculine singular.

In Hindi, many adjectives change form to match the gender and number of the noun. The adjective बड़ा changes like this:

• बड़ा = masculine singular
• बड़ी = feminine singular
• बड़े = masculine plural, or masculine singular in some oblique contexts

Since भवन is masculine singular, बड़ा is the correct form.

In Hindi, noun gender usually has to be learned along with the word. Sometimes the ending gives you a clue, but not always.

For भवन, the standard grammatical gender is masculine. That is why the adjective is बड़ा.

This is something English speakers often have to get used to: grammatical gender in Hindi is not always predictable from meaning alone.

All of them can relate to a building or structure, but they are not exactly the same.

• भवन = a somewhat formal word for building
• घर = house/home
• इमारत = building/structure, very common, often feminine

So यह भवन बड़ा है sounds a bit more formal or textbook-like than:

• यह घर बड़ा है = This house is big.
• यह इमारत बड़ी है = This building is big.

Notice that इमारत is feminine, so the adjective changes to बड़ी.

Because Hindi usually follows Subject–Object–Verb order, and forms of to be also typically come at the end of simple sentences like this.

So instead of English:

This building is big

Hindi uses:

This building big is

That is completely normal in Hindi.

Yes. यह बड़ा भवन है is also correct.

The difference is mostly one of structure and emphasis:

• यह भवन बड़ा है = This building is big.
  
  • You first identify the building, then say something about it.
• यह बड़ा भवन है = This is a big building.
  
  • Here बड़ा directly modifies भवन inside the noun phrase.

Both are natural, but they are not exactly identical in focus.

Hindi does not normally use articles like English a, an, and the.

So भवन can mean:

• a building
• the building
• just building

The exact meaning depends on context.

In this sentence, यह already makes it definite, so यह भवन naturally means this building.

This is a very common learner question.

Traditionally:

• यह = this
• ये = these

But in modern spoken Hindi, ये is also very commonly used for singular this in everyday speech.

So you may hear:

• यह भवन बड़ा है
• ये भवन बड़ा hai

In careful or formal written Hindi, यह is the standard singular form.

It is an adjective, but in this sentence it is used as a predicate adjective.

Compare:

• बड़ा भवन = a big building
  Here the adjective directly modifies the noun.

• भवन बड़ा है = the building is big
  Here the adjective describes the noun through the verb है.

So in यह भवन बड़ा है, बड़ा is still an adjective, but it is functioning in the predicate.

The important thing is the letter ड़.

• ड and ड़ are not the same.
• ड़ represents a flapped/rolled sound, often transliterated as ṛ.

So बड़ा is written and pronounced differently from a word with plain ड.

This is a common pronunciation point for learners, because English does not have an exact equivalent of ड़ in the same way Hindi uses it.

Sometimes in very casual speech, native speakers may drop है if the meaning is obvious from context. But for learners, you should treat है as necessary in a normal sentence like this.

So the standard form is:

यह भवन बड़ा है।

That is the safest and most correct version to learn first.