Building Floor Area by Census Block (Hazus)

How much building floor area stands on every census block in Ohio, split into 33 uses: single-family homes, mobile homes and apartments by building size, hotels and nursing homes, retail, wholesale, offices, banks, hospitals and clinics, entertainment, parking, six kinds of industry, farm buildings, churches, government and emergency services, schools and colleges. FEMA's Hazus program estimates it from the U.S. Army Corps of Engineers' National Structure Inventory, building by building, for its natural hazard loss models. Good for the land use side of planning: floor area by type for travel demand model zones, where retail, office and industrial space is concentrated, how much residential space a corridor holds, and what buildings stand in a floodplain or near a facility.

Published by

Federal Emergency Management Agency (FEMA), Hazus program

Source

Hazus building floor area (FEMA)

Original data

msc.fema.gov

On the map

No shapes of its own

From the publisher

An important requirement for estimating losses is the identification and valuation of the building stock, systems, and population exposed to a hazard, i.e., an inventory. Consequently, Hazus includes a comprehensive inventory for use in estimating losses. This inventory serves as the baseline when the users of the model do not have better data available.

The key ABI databases in Hazus include building area (calculated as square footage) by occupancy and building type, building count by occupancy and building type, building and content valuation by occupancy and building type, and general occupancy type mapping. Most of the commercial, industrial, and residential buildings in a region are not considered individually when calculating losses. Buildings within Census subdivisions (either Census tract or block, depending on the hazard) are aggregated and categorized. Building information derived from NSI data, USA Structures and other best-available public sources are used to form groups of specific building types for each hazard and 33 occupancy classes.

For Hazus, building areas were taken directly from NSI 2022 data where available. The NSI 2022 method used parcel data records of square feet whenever available. In the absence of this data, square footage was assigned from regional distributions that vary by occupancy type. NSI 2022 estimates of square footage were based on building footprints when available. In the absence of parcel data and footprint data, square footage was estimated solely using the generic assumption regarding average square feet per employee.

Fields

What each record holds, as the publisher describes it: 35 fields.

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