former address; previous address
Used when referring to an address where one lived before moving. Common in official forms and personal records.
Please fill in your former address on the moving documents.
My previous address was in Shinjuku, Tokyo.
住所 is the general word for 'address', while 前住所 specifically means 'former address'.
Compound of 前 (ぜん, 'previous') and 住所 (じゅうしょ, 'address').