Saya mau pindah kos bulan depan karena kamar kos saya sekarang terlalu sempit.

Kos refers to a rented room or boarding house, very common in Indonesia for students and workers.

In this sentence:

• pindah kos = move to a different rented room / boarding house
• kamar kos saya = my boarding room / my room in the boarding house

A learner may also see related forms like:

• kost = a very common alternative spelling
• kosan = boarding house, rented-room place

In everyday Indonesian, these forms are often used quite loosely.

Both are possible, but they mean slightly different things.

• pindah kos means move boarding houses / change rented rooms
• pindah ke kos would mean move to a boarding house

So pindah kos is an idiomatic expression where kos acts almost like the thing being changed, not just a destination.

Compare:

• Saya mau pindah kos. = I want to move to a different boarding place.
• Saya mau pindah ke kos baru. = I want to move to a new boarding house.

Mau literally often means want to, but in conversation it can also suggest a near-future plan or intention.

So here:

• Saya mau pindah kos can mean I want to move
• but in context it can also feel like I’m going to move

It is less formal and more conversational than ingin.

Compare:

• Saya mau pindah kos. = natural, everyday
• Saya ingin pindah kos. = I want to move, a bit more formal or explicit
• Saya akan pindah kos. = I will/am going to move

In Indonesian, time expressions often appear directly without a preposition.

So:

• bulan depan = next month
• minggu depan = next week
• besok = tomorrow
• kemarin = yesterday

You usually do not need a word equivalent to English in.

So:

• Saya pindah bulan depan = I’m moving next month

That is completely normal Indonesian.

Indonesian usually places possessors after the noun.

So:

• kamar kos saya = my boarding room
  literally: room boarding-house my

This is the normal possessive pattern:

• buku saya = my book
• rumah mereka = their house
• nama kamu = your name

You can say saya punya kamar kos, but that means more like I have a boarding room. It does not fit as naturally here, because the sentence is talking about my current room, not simply stating ownership.

Here sekarang means now / current(ly), and it helps describe the room I have now.

So:

• kamar kos saya sekarang = my current boarding room / the boarding room I have now

It does not necessarily mean the room is physically now too small at this exact moment only; it helps identify the present room in contrast to the new one the speaker wants to move to.

A very natural English translation is:

• my room right now
• my current room

Sempit means narrow / cramped / small.
Terlalu sempit means too cramped / too small.

The word terlalu adds the idea of excess—more than is acceptable.

Compare:

• Kamar ini sempit. = This room is small/cramped.
• Kamar ini terlalu sempit. = This room is too small/cramped.

Because the sentence gives a reason for moving, terlalu sempit sounds more natural: the room is not just small, but uncomfortably small.

Karena is the standard word for because.

So:

• ...karena kamar kos saya sekarang terlalu sempit. = ...because my current room is too cramped.

Other ways to express similar ideas include:

• soalnya = because / the thing is..., more conversational
• sebab = because, more formal or written
• gara-gara = because of, often with a negative nuance

Examples:

• Saya mau pindah kos karena kamar saya sempit.
• Saya mau pindah kos soalnya kamar saya sempit.
  More spoken, casual.

Indonesian does not normally use articles like English a/an/the.

So nouns like:

• kamar
• kos
• bulan depan

appear without articles.

You understand whether something is definite or indefinite from context.

For example:

• kamar kos saya naturally means my boarding room, which is already definite because of saya
• bulan depan naturally means next month

This is very normal in Indonesian.

It may feel repetitive to an English speaker, but it is normal.

The two saya have different roles:

• first Saya = the subject, I
• second saya in kamar kos saya = the possessor, my

So the sentence structure is:

• Saya = I
• mau pindah kos = want to move boarding houses
• karena kamar kos saya sekarang terlalu sempit = because my current boarding room is too cramped

Indonesian often repeats pronouns where English might avoid repetition.

Yes. Sempit literally often means narrow or tight, but for rooms it is commonly translated as cramped or too small.

So in this sentence, terlalu sempit suggests:

• not enough space
• cramped
• too tight to live comfortably

That is why too cramped is often a better translation than just too narrow.

Yes, absolutely.

Indonesian word order is fairly flexible, especially with time expressions.

These are all natural:

• Saya mau pindah kos bulan depan.
• Bulan depan saya mau pindah kos.
• Saya bulan depan mau pindah kos.

The first one is very natural in conversation.
Putting bulan depan at the beginning gives it a bit more emphasis, like:

• Next month, I want to move.

A helpful breakdown is:

• Saya = subject
• mau pindah kos = predicate / verb phrase
• bulan depan = time expression
• karena kamar kos saya sekarang terlalu sempit = reason clause

So the pattern is roughly:

Subject + intention/action + time + reason

That makes the sentence easy to expand. For example:

• Saya mau pindah kos bulan depan karena lokasinya jauh.
• Saya mau pindah kos bulan depan karena sewanya mahal.

This is a very common and useful Indonesian sentence pattern.