LeadAnalyze data source notices

Climate data used in national electricity-use estimates:
NOAA National Centers for Environmental Information, U.S. Climate Normals,
1981-2010. https://www.ncei.noaa.gov/products/land-based-station/us-climate-normals
Accessed 13 October 2026. Heating- and cooling-demand values describe
typical local climate, not the household's heating equipment or measured
electricity consumption. Estimates fall back to regional household
patterns when suitable local climate or building information is missing.

State boundary reference:
U.S. Census Bureau, 2024 cartographic state boundaries, 1:20,000,000.
https://www.census.gov/geographies/mapping-files/time-series/geo/cartographic-boundary.html
Accessed 13 October 2026. Simplified boundaries support location checks;
they are not parcel boundaries.

Climate data used in earlier supported regional electricity-use estimates:
PRISM Group, Oregon State University, https://prism.oregonstate.edu,
accessed 1 October 2026. Derived from 1991-2020 monthly temperature
normals on a 4 km grid. The cooling-demand values are modeled climate
normals; they are not observations of a home's electricity consumption.
PRISM terms: https://prism.oregonstate.edu/terms/

Optional building attributes:
U.S. Army Corps of Engineers National Structure Inventory (NSI).
https://www.hec.usace.army.mil/confluence/nsi
Public structure records can contain reported and estimated attributes.
A parcel-origin record does not establish independent verification of
individual living-area or story-count fields.

Optional county property backup (Sonoma County, California):
County of Sonoma, Clerk Recorder Assessor / ISD-GIS Central,
Parcels Public. Accessed 13 October 2026.
https://socogis.sonomacounty.ca.gov/map/rest/services/CRAPublic/ParcelsPublic/FeatureServer/0
The primary-building size is used as a public-record living-area proxy
only for a matching single-home parcel. It is not independently verified
conditioned floor area. Parcel shapes are for general reference, not
survey-quality boundary determinations. County backup coverage varies;
missing or ambiguous records preserve the existing estimation fallback.

These sources do not endorse LeadAnalyze. Estimates are preliminary and
do not represent the household's metered use or a verified utility bill.

Additional optional California county property sources (13 October 2026):
Solano County, Parcels Public:
https://services3.arcgis.com/6CawrotsIAWp4yUX/arcgis/rest/services/ParcelsPublic/FeatureServer/1
Contra Costa County, CCMAP Assessment Parcels:
https://gis.cccounty.us/arcgis/rest/services/CCMAP/Assessment_Parcels_ArcPro/MapServer/0
Humboldt County GIS, Parcels:
https://cty-gis-web.co.humboldt.ca.us/server/rest/services/Parcels/Parcels_no_labels/MapServer/0
County building/floor area is a public-record proxy for living area, not
independently verified conditioned space. Exact street and parcel containment
must agree. Coverage and record completeness vary. No county source guarantees
current conditions or metered energy usage. Parcel geometry is for general
reference and must not be relied on for surveying, engineering or project design.