Use a site plan, boundary notes, access constraints, and reference massing to identify the drivers that should shape and distinguish early building-form options.

The actual workflow — connected nodes you can run to preview each step.
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Give designers a shared set of site-driven questions before multiple forms are explored.

Relate changes in footprint, height, orientation, and access to specific constraints rather than stylistic preference alone.

Record why one massing approach is being developed and which assumptions could still alter that choice.
Some inputs establish hard boundaries, while others indicate performance goals or preferences. Keeping these categories separate prevents an optional strategy from being treated as an unchangeable site rule.
Translate each constraint into a consequence for form. A boundary condition matters differently when it limits footprint, protects a view, reserves access, or changes the relationship to neighboring buildings.
Criteria should help compare plausible options, not predetermine a single shape. Preserve competing priorities and state where professional or planning validation could change the brief.
Convert boundaries, access conditions, and context constraints into criteria the team can apply across early options.