Penyerahan kunci dibuat esok.

Penyerahan is a noun meaning handover, delivery, or submission, depending on context.

It comes from the root verb serah (to hand over / to surrender) plus the noun-forming pattern peN- ... -an:

• serah = hand over
• menyerahkan = to hand over something
• penyerahan = the handover / the act of handing over

So penyerahan kunci means the handover of the key(s) or key handover.

In Malay, the main noun usually comes first, and the word modifying it comes after.

So:

• penyerahan kunci = handover of keys / key handover
• literally: handover key

This is the opposite of normal English word order, where the modifier often comes first:

• English: key handover
• Malay: penyerahan kunci

This head-first pattern is very common in Malay:

• rumah besar = big house
• buku sejarah = history book
• penyerahan dokumen = document submission

Yes, dibuat comes from buat (to make / to do), and literally it often means is made or is done.

But in formal Malay, dibuat is often used more broadly to mean:

• carried out
• conducted
• done

So Penyerahan kunci dibuat esok does not mean the keys themselves are being physically made tomorrow. It means the handover event will be carried out tomorrow.

A more natural English rendering would be something like:

• The key handover will be done tomorrow
• The keys will be handed over tomorrow
• The handover of the keys will take place tomorrow

Yes. Di- is a common passive prefix in Malay.

• buat = do / make
• dibuat = is done / is made

So this sentence is passive in structure. It focuses on the event, not on who is doing it.

That is very normal in Malay, especially in formal or administrative language. The agent can be left unstated if it is obvious or unimportant.

Compare:

• Ali membuat kerja itu. = Ali does that work.
• Kerja itu dibuat oleh Ali. = That work is done by Ali.

In your sentence, no agent is given:

• Penyerahan kunci dibuat esok. = The key handover is done tomorrow.

Because esok already shows that the action is in the future.

Malay often does not need a special future marker if there is already a time word such as:

• esok = tomorrow
• nanti = later
• minggu depan = next week

So:

• Penyerahan kunci dibuat esok. = perfectly natural
• Penyerahan kunci akan dibuat esok. = also correct

Adding akan can make the sentence sound a bit more explicitly future-oriented, and sometimes slightly more formal or planned.

So both work, but akan is not necessary here.

Malay does not usually use articles like English a, an, and the.

So kunci can mean:

• a key
• the key
• keys
• the keys

The exact meaning depends on context.

The same is true for penyerahan kunci. Depending on the situation, it could mean:

• a key handover
• the key handover
• handover of the keys

Malay relies much more on context than English does for this kind of information.

It could be either, depending on context.

In Malay, nouns usually do not change form for singular vs plural. So:

• kunci = key / keys

If the speaker wants to make plurality very explicit, they can use reduplication:

• kunci-kunci = keys

But in many real sentences, reduplication is unnecessary because the meaning is already clear from the situation.

So in this sentence, kunci could mean:

• the key
• the keys

Context decides which is intended.

Yes. Malay word order is somewhat flexible, especially when moving time expressions for emphasis.

These are all possible, with slightly different focus:

• Penyerahan kunci dibuat esok.
• Esok penyerahan kunci dibuat.
• Penyerahan kunci akan dibuat esok.

Putting esok at the beginning gives more emphasis to tomorrow.

The original version sounds natural and fairly neutral.

You could, but the meaning would shift slightly.

• Penyerahan kunci dibuat esok focuses on the handover event being carried out tomorrow.
• Kunci diserahkan esok focuses more directly on the keys being handed over tomorrow.

So:

• dibuat = the handover is conducted/done
• diserahkan = the key(s) are handed over

The version with penyerahan ... dibuat sounds more formal and administrative, like something you might see in a notice, schedule, or official message.

Yes, it sounds fairly formal and official.

Using a noun like penyerahan plus a passive verb like dibuat gives it an administrative tone. It sounds like something from:

• a notice
• an email from management
• a property or rental arrangement
• an official schedule

A less formal way might be more direct, for example:

• Kunci diserahkan esok. = The keys will be handed over tomorrow.
• Serah kunci esok. = Hand over the keys tomorrow.
  (This one sounds more like an instruction and is much less formal.)

So the original sentence is natural, but definitely on the more formal side.