regional legal affairs bureau
A local office of the Ministry of Justice in Japan, handling registrations, deposits, and legal affairs.
不動産の登記は法務局で行います。
Real estate registration is done at the legal affairs bureau.
法務省 is the national Ministry of Justice itself, while 法務局 is a local Legal Affairs Bureau, one of its regional offices handling things like registration.
Compound of 法務 (legal affairs) and 局 (bureau, office).