Az egyházi épület régi.

Hungarian has two forms of the definite article:

• a before a consonant sound
• az before a vowel sound

The next word here is egyházi, which begins with a vowel, so Hungarian uses az.

So:

• az egyházi épület = the church building / the ecclesiastical building

Compare:

• a régi ház = the old house
• az egyházi épület = the church building

Egyházi means church-related, ecclesiastical, or sometimes belonging to the church.

It comes from the noun egyház, which means church.
The ending -i often turns a noun into an adjective meaning related to or from something.

So:

• egyház = church
• egyházi = church-related / ecclesiastical

In this sentence, egyházi épület means something like church building or ecclesiastical building.

It is formed with the adjective-forming suffix -i.

• egyház = church
• egyházi = church-related

This -i suffix is very common in Hungarian. It often corresponds to English adjectives like:

• Budapest → budapesti = from Budapest / Budapest-related
• iskola → iskolai = school / school-related
• egyház → egyházi = church / church-related

So this is a useful pattern to remember.

Épület means building.

It is a noun. In this sentence, it is the main noun of the subject phrase:

• az egyházi épület = the church building

So the structure is:

• az = the
• egyházi = church-related
• épület = building

In Hungarian, attributive adjectives normally come before the noun, just like in English.

So:

• egyházi épület = church building
• régi ház = old house
• nagy város = big city

That means egyházi is directly modifying épület.

Because régi is not part of the noun phrase az egyházi épület. It is the predicate adjective: it tells us what the building is like.

So the sentence divides like this:

• Az egyházi épület = the church building
• régi = old

Literally: The church building old.

In natural English: The church building is old.

Hungarian often places the predicate adjective after the subject like this.

In Hungarian, the verb van (is) is usually left out in the present tense, third person singular and plural when the sentence means something like X is Y.

So:

• Az épület régi. = The building is old.
• A ház nagy. = The house is big.

Hungarian does not normally say Az épület van régi here.

But in other persons, the verb does appear:

• Régi vagyok. = I am old.
• Régi vagy. = You are old.

So the missing is is completely normal.

Because Hungarian adjectives do not work like adjectives in many Indo-European languages.

Hungarian has:

• no grammatical gender
• generally no adjective agreement in simple predicate use like this

So régi stays régi regardless of whether the noun is masculine, feminine, neuter, singular, or plural—because Hungarian does not make those distinctions in the same way.

Examples:

• A ház régi. = The house is old.
• Az épület régi. = The building is old.
• A templom régi. = The church is old.

The adjective stays the same.

It can suggest either, depending on context.

Most naturally, it means something like:

• the church building
• the building belonging to the church
• the ecclesiastical building

Egyházi is a bit broader than simply church in English. It can refer to something officially connected to the church as an institution.

So in context, the exact English translation may vary slightly.

This word order is the neutral, straightforward way to say it:

• Az egyházi épület régi.

This means The church building is old.

Hungarian word order is flexible, but changes in word order often affect focus or emphasis.

For example, moving elements around could emphasize something different, but the sentence you have is the normal basic version.

For a learner, it is best to understand this one as:

• subject: Az egyházi épület
• predicate: régi

A rough pronunciation is:

edj-haa-zee

More carefully:

• egy sounds roughly like edj
• há has a long á, like a longer open a
• zi sounds like zee

And épület is roughly:

ay-poo-let

A more detailed approximation:

• é = like ay
• ü is a front rounded vowel, which English does not really have
• e = short eh

So the whole sentence is approximately:

Az egyházi épület régi
≈ awz edj-haa-zee ay-poo-let ray-ghee

This is only an approximation, but it can help at first.

The pattern is:

definite article + adjective + noun + predicate adjective

So here:

• Az = the
• egyházi = church-related
• épület = building
• régi = old

Structure:

• Az egyházi épület = the church building
• régi = is old

This is a very common Hungarian sentence type, and you can use it with many other words:

• A ház nagy. = The house is big.
• A kert szép. = The garden is beautiful.
• Az iskola régi. = The school is old.