NFIRS 5.0 Element: ‘Mixed Use’

Definition : This data element captures the overall use of a property. If a property has two or more uses, then the Mixed Use Property designation applies.
Purpose : Documenting an incident that occurs on a property with more than one use is important to better identify the overall or main use of the property in which emergency incidents occur. Knowing the overall property use allows for better analysis of incident causes and targeting of prevention strategies. It also is important information for use in code development and enforcement as well as for inspection activities.
Entry : If the property is of mixed use, check or mark the box best describing the overall use of the property where the incident occurred. Check or mark the appropriate box even if the incident did not involve the entire complex (for example, a single store in a row of stores). If it is not a mixed use property, check or mark the Not mixed box.

Element Specification

 Specification   Value 
Requirement Optional
Expected Length 2
Element Type Coded Field – The coded field relating to an entry in the code table. Most coded fields allow for Plus+ One codes. For these fields the expected length of the coded entry is depicted as (National length OR Plus+ One length). Only fields with this notation in the expected length column allow for Plus+ One definitions. If the user has not provided information, an empty field should be transmitted.


Here are the NFIRS codes for the ‘Mixed Use’ element

Mixed Use  Code 
Assembly Use 10
Educational Use 20
Medical Use 33
Residential Use 40
Row Of Stores 51
Enclosed Mall 53
Business And Residential Use 58
Office Use 59
Industrial Use 60
Military Use 63
Farm Use 65
Mixed Use – Other 00
Not Mixed Use NN

Transactions containing ‘Mixed Use’

The value of this element is captured by the following transaction :

Need more NFIRS help?

Here are some other useful ressources to learn more about NFIRS.

NFIRS Codes Cheat SheetNFIRS CodingNFIRS ExamplesFDIDsPOCsNFIRS TransactionsNFIRS ModulesNFIRS ElementsNFIRS RulesNFIRS ReferenceNFIRS Compliant ?

You can also read this NFIRS 5.0 Complete Reference Guide, and NFIRS 5.0 Design Documentation in order to have a deeper understanding of NFIRS 5.0. Here are also NFIRS 5.0 Forms ready for you to download and use.

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Last Updated on May 3, 2023