NFIRS 5.0 Element: ‘Number Of Residential Units’

Definition : The estimated total number of residential living units in the building of origin, whether or not all of the units became involved in the fire.
Purpose : This information permits analysis of the fire problem by specific property use details. Information on the number of residential living units in the fire building provides a measure of the potential human exposure and can assist in targeting fire prevention and suppression programs.
Entry : Enter the estimated total number of residential living units in the building of origin, whether or not all the units became involved or were occupied at the time of the fire. If the fire did not occur in a residential property, check or mark the Not Residential box.
One- and two-family dwelling: Enter 1 or 2 as appropriate.
Apartment buildings, condominiums, townhouses, and rowhouses: Enter the number of separately owned or rented units in the building of origin.
Hotels and motels: Enter the number of lodging units in the building of origin.
Dormitories, rooming houses, and live-in-care centers: Enter the number of beds.

Element Specification

 Specification   Value 
Requirement Optional
Element Type Numeric – Integer numbers (no decimal points). If the user has not provided information, an empty field should be transmitted. All integer values are assumed to be positive. Any fields which allow a negative integer value have been denoted with ‘+ or –’ in the comment field. Negative numbers should be transmitted with the minus sign preceding the digits.

Relational Edit Rules for ‘Number Of Residential Units’

NFIRS defines relational edit rules to ensure data consistency and accuracy in its database. These are the rules for ‘Number Of Residential Units’.

Rule Group  Overview
Relational Edit Rule 40 relational edit rule 40.

Transactions containing ‘Number Of Residential Units’

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

Need more NFIRS help?

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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 4, 2023