todokedenin wa kyuujuusho, shinjuusho, tennyuubi, setai, setainushi o shinseisho ni kinyuusuru.

The notifier fills in the former address, new address, moving-in date, household, and head of household.

Breakdown of todokedenin wa kyuujuusho, shinjuusho, tennyuubi, setai, setainushi o shinseisho ni kinyuusuru.

• は: topic particle
• を: direct object particle
• に: target particle
• 記入きにゅうする: to fill in

Questions & Answers about todokedenin wa kyuujuusho, shinjuusho, tennyuubi, setai, setainushi o shinseisho ni kinyuusuru.

How do you read the whole sentence?

A natural reading is:

とどけでにん は きゅうじゅうしょ、しんじゅうしょ、てんにゅうび、せたい、せたいぬし を しんせいしょ に きにゅうする。

Word-by-word:

• 届出人 = とどけでにん
• 旧住所 = きゅうじゅうしょ
• 新住所 = しんじゅうしょ
• 転入日 = てんにゅうび
• 世帯 = せたい
• 世帯主 = せたいぬし
• 申請書 = しんせいしょ
• 記入する = きにゅうする

What does 届出人 mean exactly?

届出人 is a formal administrative word meaning the person who files the notification or report.

It is made of:

• 届出 = notification, filing, report
• 人 = person

So this is not a casual everyday word. It sounds like something you would see on official forms, city office documents, legal paperwork, and so on.

What is は doing here?