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Program parameters constrain which designs Parafin generates. Tighten a parameter to narrow the results, then regenerate. Each section below is one accordion in the panel. Some parameters may not appear for every brand or plan. Prototype-only brands generate from a fixed set of designs, so the building and filter controls below are hidden for them.

Building

ControlWhat it does
FloorsSets the allowed range for the number of floors.
HeightSets the allowed range for building height.
KeysSets the allowed range for the number of guestrooms.
ZoningShows the zoning limits applied to the design. Use Edit Zoning to review or adjust them.

Room Mix

ControlWhat it does
Room-type slidersOne slider per room type sets that type’s target share of the mix.

Site Open Space

ControlWhat it does
Open space %Minimum share of the site left unbuilt and unpaved. Variants without adequate paved area for the required parking spaces are filtered out.

Parking

ControlWhat it does
Spaces Per KeyRequired parking spaces per guestroom (up to 5).
Additional spacesExtra parking spaces beyond the per-key requirement.

Budget

ControlWhat it does
Development BudgetSets the target all-in development budget. Variants outside the range are filtered out.

Program Options

ControlWhat it does
Prototypes OnlyLimits results to the brand’s standard prototype layouts.
Category optionsAdditional brand-specific options that filter the program; the available categories vary by brand.
For how parameters shape the results, see Generating designs.