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Permit Data for Geospatial Research
A permit is a dated, addressed record of work someone intends to do to a piece of land: a new structure, a drainage tile line, a change of use, a water withdrawal. Geocoded, those filings become a point layer that tracks change in the built and managed environment week by week, years before it appears in assessment rolls or land cover classifications. Permits also carry attributes that imagery cannot supply, including declared valuation, work type, applicant and the jurisdiction whose rules applied, which is what makes them joinable to parcels, hazard layers and census geographies.
How geospatial researchers use permit data
Parcel level construction activity and neighbourhood change
Geocoded permit records give a point level, high frequency account of investment in the built environment: who applied, for what work, at what declared value, and when. Aggregated to block groups or to custom catchments around a treatment site, those counts serve as the outcome or the explanatory variable in studies of gentrification, displacement and post disaster rebuilding, at a grain annual housing statistics cannot reach. A permit records intent rather than completion, and declared valuations are self reported by the applicant, so counts overstate work that stalls and miss work done without a permit at all.
Permits as the spatial record of otherwise invisible infrastructure
For subsurface drainage, wells, septic systems and water withdrawals, the permit file is often the only georeferenced evidence that the asset exists, because nothing remains visible in aerial or satellite imagery once the work is finished. Researchers geocode and digitise these filings to build spatial layers for hydrological modelling, land use change and environmental compliance work. Coverage is bounded by the permitting authority: requirements begin in a particular year, thresholds exclude small works, and address level filings need geocoding whose match rate falls in rural areas where the layer matters most.
Housing supply and regulatory friction across jurisdiction boundaries
Permit counts aggregated to municipality or county are the standard measure of new housing supply, and comparing them across adjacent jurisdictions with different zoning regimes supports border and regression discontinuity designs that test how regulation constrains construction. The geography carries the identification, so permit office coverage and boundary files have to line up before the estimate means anything. Aggregate series are assembled from local reporting with differing thresholds and some imputation for non reporting places, which makes within jurisdiction change over time more trustworthy than a level comparison between two jurisdictions.
Permit and property datasets available on Dewey
Construction Monitor
Construction Monitor compiles building permit filings from local permitting offices across the United States with the address, work type, declared valuation and contractor on each record, which is the base layer for any point level analysis of construction activity.
View datasetATTOM
ATTOM's parcel level property, deed and tax assessment records give permits something to attach to, so a filing can be tied to a structure, its ownership history and its assessed value rather than to a bare coordinate.
View datasetClimateCheck
ClimateCheck scores properties for flood, heat, fire and storm exposure, letting researchers classify permitted work by the hazard profile of the site and ask whether building continues in exposed locations.
View datasetMore published work using permit data
Marie, Megan, Clark, Jeanette · 2019
Lisk, Matthew · 2024
Toscano Dominguez, Francesca Noardo · 2026
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