Researching your home's history is a systematic process that begins with one small piece of data—your property's parcel number—and branches into two distinct paths: tracing the physical building and tracing the people who lived there. The records you need sit mostly at the local level, in the offices of the county Assessor and Recorder, the city building department, and in the collections of public libraries and historical societies. Guides from Seattle's City Archives, the Los Angeles Public Library, and Baltimore Heritage all describe a similar sequence, which you can adapt in nearly any U.S. county. Here is how the chain of records connects, and how each step unlocks the next.
Introduction: Why Research Your Home's History?
Every house carries two intertwined stories: when it was built and how it changed, and who built, owned, and occupied it. The Library of Congress frames house history research in exactly these terms, noting that a wide variety of primary sources—from deeds to directories, manuscripts to maps, and photographs to floor plans—can help you reconstruct a building's past and identify the people who built, owned, and lived there. This guide is designed, as Baltimore Heritage puts it, as "a starting place for figuring out what questions to ask and where to find the answers."
The mental model that makes the whole process manageable is to separate your questions into two categories. Questions about the structure itself—construction date, architect, permits, alterations—lead to assessors, building departments, and maps. Questions about the humans—owners, residents, their occupations and lives—lead to deeds, city directories, and census records. Most researchers alternate between the two paths, with one parcel number serving both.
