BuildabilitySource catalog · Verified 2026-10-16
Government data. Powered by Geo.
Buildability™ organizes available evidence from 7 federal agencies and 5 commercial and local sources, then routes each question to the right model tier for the job. Available findings identify their source and confidence.
Buildability can run a preliminary federal-hazard and location screen for addresses in all 50 U.S. states. · Parcel-level zoning coverage varies by jurisdiction; depth, dimensional standards, overlays, and permit guidance are labeled with their sources and confidence.
01 · Foundation
Federal sources of truth.
Available federal findings identify their source and confidence. Availability depends on the parcel and the dataset.
.GOVCensus
U.S. Census Bureau · Geocoding & Demographics- Address → coordinate geocoding
- TIGER boundaries & block groups
- ACS 5-year median household income
- Tract population, median home value & median rent
- Opportunity Zone tracts
- Block group / tract / county geography
.GOVFEMA
Federal Emergency Management Agency · Flood & Hazard Risk- NFHL flood zone code (X, AE, VE, AO, etc.)
- Special Flood Hazard Area designation
- Base Flood Elevation (BFE)
- Floodway on the point and on the lot
- Share of the lot inside a Special Flood Hazard Area
.GOVUSGS
U.S. Geological Survey · Elevation & Seismic- Elevation (3DEP digital elevation model)
- Slope (%)
- Seismic design category, peak ground acceleration & Ss
- Lot-surface elevation grid (1 m lidar where flown)
.GOVEPA
Environmental Protection Agency · Radon & Water Service- County radon zone (1 high → 3 low)
- Community water system serving the point, or a private-well flag
.GOVUSDA
U.S. Department of Agriculture · Soil & Agricultural- SSURGO soil map unit & series
- Soil drainage class & hydrologic group
- Dwelling and septic limitation ratings
- Depth to bedrock & water table
- Flood frequency & ponding
.GOVUSFS
U.S. Forest Service · Wildfire- Wildfire Hazard Potential at the parcel
USFWS
U.S. Fish and Wildlife Service · Wetlands- National Wetlands Inventory polygon at the parcel
- Wetland adjacency
02 · Intelligence
Commercial and local sources.
Property-level granularity that federal APIs alone cannot provide: parcel records, valuation, and each city’s own zoning map.
Regrid
Regrid Parcel Data Platform · Parcel & Ownership- 155M+ U.S. parcel polygons (boundary geometry)
- Owner name & mailing address
- Local zoning district code
- Land use & legal use
- Assessed land + improvement value
- Last sale date & price
- Lot size (sqft & acres)
- Building characteristics (sqft, year built, beds/baths)
RentCast
RentCast Rental Analytics · Rental Market Data- AVM property valuation
- Rent estimate
- Comparable sales
- Structure, tax, assessment & last sale
ATTOM
ATTOM Parcel and AVM Detail · Fallback- Fallback valuation and parcel identity
- Used only when RentCast or Regrid has no answer
City zoning layers
Each city’s own published zoning map (municipal ArcGIS) · Zoning district- Zoning district code at the parcel
- Split-zoning detection across the lot
- Dimensional standards only where we have read and cited the city’s code
OpenStreetMap
OpenStreetMap (Overpass API) · Utilities & Infrastructure- Power line proximity
- Roads near the lot & road frontage
- Schools & nearby amenities
- Rail and transmission lines nearby
The full list
Every dataset one report reads.
Read from the provider registry the report path uses (packages/providers sources.ts), so this table cannot drift from the code. What comes back for a given address depends on coverage.
| Publisher | Dataset | Feeds | When | Access |
|---|---|---|---|---|
| U.S. Census Bureau | Geocoding Services | Address match, coordinates, state and county | Every report | Public |
| U.S. Census Bureau | American Community Survey | Tract income, population, home value, rent | Every report | Public |
| U.S. Census Bureau / CDFI Fund | Opportunity Zone tracts | Opportunity Zone designation | Every report | Public |
| FEMA | National Flood Hazard Layer | Flood zone, floodway, base flood elevation, share of the lot in an SFHA | Every report | Public |
| USGS | Seismic Design Maps | Seismic design category and peak ground acceleration | Every report | Public |
| USGS | 3D Elevation Program | Ground slope, elevation, aspect | Every report | Public |
| USDA Forest Service | Wildfire Risk to Communities | Wildfire hazard potential | Every report | Public |
| USDA NRCS | SSURGO soil survey | Soil series, dwelling and septic limitation ratings, bedrock and water table depth | Every report | Public |
| USFWS | National Wetlands Inventory | Wetland on the parcel and wetland adjacency | Every report | Public |
| EPA | Map of Radon Zones | County radon zone | Every report | Public |
| EPA | Community water system boundaries | Who serves water here, or a private-well flag | Every report | Public |
| FHWA | Highway Performance Monitoring System | Annual average daily traffic on the nearest counted road | Every report | Public |
| FCC | National Broadband Map | Block-resolution broadband availability, fiber, provider count | Every report | Public |
| HUD | Qualified Census Tracts 2026 | LIHTC qualified census tract | Every report | Public |
| HUD | Difficult Development Areas 2026 | LIHTC difficult development area | Every report | Public |
| HUD | Low/Mod Income Summary Data | Block group low/mod income share and margin of error | Every report | Public |
| HUD | CDBG activity | CDBG-funded projects within a mile | Every report | Public |
| U.S. Treasury | Opportunity Zones 2.0 eligibility | Eligibility for nomination as a 2027 Opportunity Zone | Every report | Public |
| Open-Meteo (open-source weather API) | Forecast, historical archive and air quality | Conditions now, the last 30 days against normal, the forecast, seasons, air quality | Every report | Public |
| NOAA National Weather Service | Active alerts | Weather alerts in force at the parcel | Every report | Public |
| NOAA | Atlas 14 precipitation frequency | Design storm depths used for drainage | Every report | Public |
| U.S. Drought Monitor (NDMC with USDA and NOAA) | Drought classification | Current drought status | Every report | Public |
| National Park Service | National Register of Historic Places | Historic listings on and near the parcel | Every report | Public |
| OpenStreetMap | Overpass extract | Utility proximity, schools, amenities, nearby lines and rail, road frontage from the parcel ring | Every report | Public |
| County assessors | Published parcel layers | Parcel ring, APN, owner, acreage — tried before any paid parcel call | Where the layer reaches | Public |
| Municipal GIS | Zoning layers | Zoning district identity, and the districts a split-zoned ring intersects | Where the layer reaches | Public |
| Jurisdictions | Published zoning ordinances | Dimensional standards — height, FAR, coverage, setbacks, minimum lot — quoted and cited to the section | Where the layer reaches | Public |
| National Zoning Atlas | District permissions | Housing types allowed by right in the district | Where the layer reaches | Public |
| Regrid | Parcel records | Parcel ring, legal description, assessed and land value, sale, tax, buildings, school district | Every report | Paid |
| RentCast | Property records, AVM and comparables | Structure, tax, assessment, last sale, valuation, rent, comparable sales | Every report | Paid |
| ATTOM | Parcel and AVM Detail | Valuation where RentCast has none, and parcel identity where Regrid fails | When the primary is empty | Paid |
03 · Reasoning
Deterministic score. Model‑agnostic interpretation.
The Buildability Score is computed by the deterministic, versioned score engine; AI is not inside the scoring math. A complexity router picks the right frontier-model tier per question to interpret evidence, explain findings, and answer follow-ups.
- 01
Frontier tier. Top tier.
Deep Reasoning · Long-context · adaptive reasoning. Investment-grade due diligence, Full-ordinance reasoning, Multi-jurisdiction feasibility.
- 02
Default tier. Default.
Default Reasoning · Balanced reasoning · complex questions. Buildability finding explanations, Zoning interpretation, Strategic analysis.
- 03
Fast tier. Fast.
Fast Lookups · Low-latency · high-volume queries. Quick data extraction, Conversational replies, Simple queries.
Complexity router · Long-context reasoning · Adaptive thinking · Prompt caching · MCP tool use. We are model-agnostic and swap in whichever frontier model wins each task. Current model lineup and subprocessors are on the compliance page
The moat
Why this matters.
Buildability™ brings a documented source catalog and a calibrated preliminary workflow into one property review.
| Manual research | Buildability™ |
|---|---|
| Separate source portals | Buildability can run a preliminary federal-hazard and location screen for addresses in all 50 U.S. states. |
| Local maps and ordinances reviewed independently | Parcel-level zoning coverage varies by jurisdiction; depth, dimensional standards, overlays, and permit guidance are labeled with their sources and confidence. |
| Evidence reconciled by the researcher | 9-factor Buildability Score |
| Site constraints checked one at a time | Available findings identify their source and confidence |
| Material findings verified with officials and professionals | Buildability is preliminary information, not legal advice, an entitlement, a permit, or an official zoning determination. |
Available findings identify their source and confidence.
The workflow starts with the intended project, checks available zoning, site and legal-record evidence, and flags material questions for official or professional verification.
Preliminary information · Verify material findings · Free to score