Try to address as many of these as you can:
BUILDING NAME - a building may be known by several names (at once or over time), including variant names (Fallingwater or Falling Water), its street address (30 Rockefeller Plaza), or relationship to a client (Kaufmann Residence, Trump Tower, Wells Fargo Center). Collect them all!
BUILDING TYPE - often defined by function (which can change over time) but just as often defined by form or purpose
DATE - of design, start of construction, or construction completion
LOCATION/CONTEXT - urban, zero lot, suburban, rural,
DESIGNER - may be a single individual, or an architect, or multiple architects over time, or a design firm.
PATRON/CLIENT - may be anonymous (vernacular), an individual, institution, government, or corporate entity
PERIOD/STYLE - periods are defined relationally as much as by time; styles can be revisited from one epoch to the next [e.g., classical, neoclassical, classical revival]
BUILDING TECHNOLOGY - construction method & materials, technological innovations or significance
SIGNIFICANCE - historical, technological, aesthetic, cultural: first, last, best, tallest, largest, worst, "only example of ___," etc.
CHANGES OVER TIME - alterations, additions, renovations, restorations, catastrophic damage, demolition