Koseki Request Form Builder – Koseki Research Toolbox

KOSEKI REQUEST FORM – DATA REQUEST

Permanent Residence This is the multi-generational permanent address of your ancestor’s home. In general, this will be the address listed in various immigration documents.	Required
Hittōsha Typically translated as “head of household” or “principal person”. In general, this will be the father of the issei immigrant. This field can be left blank if not known.	Optional
Birthdate of Hittōsha Typically translated as “head of household” or “principal person”. In general, this will be the father of the issei immigrant. This field can be left blank if not known.	Optional
Hitsuyō na kata Translated as “requested individual”. In general, this will be the issei immigrant you are researching.	Required
Birthdate of Hitsuyō na kata Not required, yet any information such as a birth year may help validate the relative’s birthdate is close to that provided.	Optional
Relationship to Hitsuyō na kata There must be a direct blood or adoptive relationship to request documents. (e.g., child, grandchild, great-grandchild).	Required
Name of Person Submitting Request	Required
Address of Person Submitting Request	Required
City, State, Zip of Person Submitting Request	Required
Email of Person Submitting Request	Required
Date of Birth of Person Submitting Request	Required