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What is required for the building sketch or floor plan in the appraisal report?

Building footprint sketch or floor plan and calculations

A footprint sketch or floor plan must be software-generated (not hand drawn) and indicate dimensions and calculations that demonstrate how the gross living area was derived. The sketch must include the subject’s exterior footprint with dimensions. All levels of the dwelling unit(s) must be part of the exhibit. In addition, a separate footprint sketch including dimensions must be provided for each additional structure with room labels, when applicable. 

A floor plan is required for certain appraisal reports. Refer to the “STATEMENT OF ASSUMPTIONS AND LIMITING CONDITIONS” included in each Fannie Mae appraisal report to determine if a floor plan is required.

If the interior layout of the dwelling unit(s) is atypical or functionally obsolete, thus limiting the market appeal for the property in comparison to competitive properties in the neighborhood, Fannie Mae also requires a floor plan. The floor plan must include the following: 

  • interior walls, 
  • doorways, 
  • staircases, 
  • exterior ingress/egress, 
  • labels for each room, and 
  • provide the dimensions of all exterior walls. 

For a unit in an apartment-style condo or co-op project, the sketch of the unit must indicate interior perimeter unit dimensions rather than exterior building dimensions (dimensions and estimates for gross living area shown in the condo documents are acceptable). See Gross Living Area in B4-1.3-05, Improvements Section of the Appraisal Report for additional information.

For additional information, see B4-1.2-01, Appraisal Report Forms and Exhibits.

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