Square One (スクエアワン司法書士法人) is a Japanese judicial scrivener corporation with its main office in Hiroo, Shibuya-ku, Tokyo. A shihō-shoshi, or judicial scrivener, is the licensed professional who files company and property registrations in Japan. The firm publishes no English name; “Square One” is a transliteration. It is on the register of the Japan Federation of Shiho-Shoshi's Associations as a corporation belonging to the Tokyo association, and its National Tax Agency corporate number is 3011005003538. According to the corporate number record it took its present name in May 2022; before that it was 司法書士法人石川和司事務所.
The register lists nine judicial scriveners: one representative partner, two partners and six employed scriveners. According to the firm's website it was established in 2011 and handles company formation, amendments to company registrations, property registration, and inheritance and estate planning. The same group includes a labour and social security attorney corporation and a land and house investigator corporation; when a company is set up, social insurance filings are handled by the group's labour and social security firm.
Zagdim wrote this summary from the information set out below.
Verified by Zagdim · 12 Nov 2026 · official registerCorporate registration, corporate number, main office, change of name, number of scriveners on the register
Stated by the firmYear established, services, division of work within the group
- Type
- Judicial scrivener corporation (shihō-shoshi hōjin)
- Founded
- 2011
- Offices
- Tokyo (main office, Hiroo, Shibuya-ku)
- Languages
- Japanese (the website is in Japanese only)
- Team
- Nine judicial scriveners on the register: one representative partner, two partners and six employed scriveners
- Website
- square1.jp