The Riksarkivet or National Archives of Sweden has a free, online database (NAD) with hundreds of collections. This collection has Sweden land records for the 1900s.
From their website:
“A book that is in enrollment authority archives and treat real estate matters for almost the entire 1900s. Here you will find, among other things information about the persons who have sought and been granted the title deed and the mortgage and easement agreements which entered on the property. … Important to know when applying the material is the jurisdiction and what belongs to the parish property and the property name for the current time.”
“What information can you find?”
“The Land Register contains information on the persons who applied for and was granted the title deed and the mortgage and easement agreement as entered on the property. There stands also the year and docket number when the deed or mortgage entered. Real estate The book serves as a directory for both the title and mortgage files in the same archive.”