Saya tulis alamat tetap di sini.

In everyday Malay, speakers often use the bare verb after the subject, so Saya tulis... is very common in conversation.

• Saya tulis alamat tetap di sini. = natural, conversational
• Saya menulis alamat tetap di sini. = more formal or more explicitly marked as a verb

Both are understandable, but tulis sounds more natural in many spoken situations.

It sounds fairly neutral to conversational.

• Saya is polite and neutral.
• tulis without meN- makes it a bit more everyday and less formal.

So the sentence is not rude or slangy, but it is also not the most formal version possible. A more formal version would be Saya menulis alamat tetap di sini.

Malay often leaves possession unstated when it is already obvious from context.

So if you are filling in your own form, alamat tetap may naturally be understood as my permanent address.

If you want to make it explicit, you can say:

• Saya tulis alamat tetap saya di sini.

That is clearer if there is any chance of confusion.

Alamat tetap is a common expression meaning permanent address or fixed address.

• alamat = address
• tetap = fixed, permanent

It is especially common in official or administrative contexts, such as forms, applications, and registrations.

Because here di is a preposition, meaning something like at / in / on for location.

• di sini = here
• di rumah = at home
• di sekolah = at school

When di- is a passive verb prefix, it is written together:

• ditulis = written
• dibaca = read

So:

• di sini = separate, because it is a location phrase
• ditulis = joined, because it is part of a verb

Sometimes in casual speech, sini can appear by itself, but in a sentence like this, di sini is the standard and safest choice.

• Saya tulis alamat tetap di sini. = correct and natural
• Saya tulis alamat tetap sini. = not standard

For learners, it is best to use di sini when you mean here as a location.

That is a very normal word order in Malay.

The basic structure here is:

• Saya = subject
• tulis = verb
• alamat tetap = object
• di sini = location

So the sentence follows a common pattern:

Subject + Verb + Object + Place

Malay can sometimes move the place phrase for emphasis, but the version with di sini at the end is very natural.

Yes. Context matters a lot.

In real use, di sini could mean:

• here in this place
• here in this box/space
• here on this line of the form

If someone is filling out paperwork, the meaning is very often write the permanent address in this spot.

Yes, if the context is clear, especially in casual speech.

For example:

• Tulis alamat tetap di sini. = Write the permanent address here.
  This sounds like an instruction.

But with saya, the sentence describes what I am doing:

• Saya tulis alamat tetap di sini. = I write / I’m writing the permanent address here.

So whether you include saya changes the feel and sometimes the meaning.

Malay does not use articles in the same way English does.

So alamat tetap can mean:

• a permanent address
• the permanent address
• sometimes even my permanent address, if the context makes that clear

English requires you to choose an article, but Malay often leaves that information to context.

Grammatically, yes, but the tone changes.

• Saya = neutral, polite, standard
• Aku = more informal, personal, and used with close friends, family, or in certain expressive styles

So:

• Saya tulis alamat tetap di sini. = safe in most situations
• Aku tulis alamat tetap di sini. = more casual and personal

For learners, saya is usually the better default choice.