Abstract: A modeling system is configured to model a building from incomplete physical constraint information. When initial user input related to the proposed building is received that identifies a building type, a location, and a square footage, the modeling system retrieves a baseline factor based on the user input and multiplies it by the square footage to produce a baseline energy usage model. As additional user inputs are received that further define the proposed building, efficiency factors are selectively applied that model the energy usage impact related to particular user inputs to produce an adjusted energy usage model, which can be compared to the baseline energy usage model.

Abstract: A system includes a processor and a memory. The memory includes a first data store configured to store a plurality of impact factors, each of which includes a normalized percentage change in an estimated building parameter attributable to a particular design choice associated with a proposed building. The memory further includes a plurality of instructions that, when executed by the processor, cause the processor to receive a first user input selecting at least one of the plurality of impact factors, bundle the at least one of the plurality of impact factors into a group in response to receiving the user input, receive a second user input including a name to associate with the group, and store the group and the name in the memory. At least one instruction, when executed by the processor, causes to the processor to apply the group to adjust a selected baseline model of a building to produce a resulting model.