Roadmap

What is built, and what is next

Every item says how firm it is. A month against something marked Target is what we are aiming at, not a promise — and Direction means no date is being claimed at all. Treating those as the same thing is how roadmaps stop being worth reading.

  1. December 2026

    Building now

    National property profiles, every state but Alaska

    The measured columns everywhere in the lower 48 plus Hawaii, on the same API and the same key. Three of the fifteen largest states are already live and the pipeline that did them is the pipeline that does the rest, so this is throughput rather than invention. Alaska is out: the imagery and elevation programmes that feed these columns do not cover it the way they cover everywhere else, and processing it would produce a county row we could not stand behind.

    Unblocks: Property search and the county data licences follow coverage directly: both answer for whatever ground the measured columns reach.

  2. December 2026

    Up next

    High-resolution aerial everywhere we measure

    30 cm imagery is national today to zoom 15, with the sharper z16 to z18 tier in Illinois only. That tier follows the property coverage out across the country, so the picture under a profile is the same picture everywhere rather than a better one in the state we started in.

Illinois to national

The inputs are mostly national already. What is Illinois-only is the processing, plus two specific datasets — and naming which is which is more useful than a launch date, because you can check it.

Already national — 5 of 7 sources

  • Overture Maps building footprints

    Global

  • FEMA National Flood Hazard Layer

    All 51 states and territories with NFHL data

  • US Census American Community Survey, 5-year

    National

  • FHFA House Price Index and Public Use Database

    National

  • DOE LEAD energy cost data

    National

What actually constrains expansion

  • USDA NAIP aerial imagery

    49 states at 60 cm. 30 cm currently Illinois only (FIPS 17).

    Imagery exists for the whole country, but the 30cm resolution the detectors were tuned on is currently Illinois only. Elsewhere means 60cm, and a detector measured at 30cm cannot quote its accuracy at 60cm without being re-measured.

  • Illinois Height Modernization Program LiDAR

    99 of 102 Illinois counties carry the full 57 features, finished 2026-08-25. The other three are permanently blocked by their published archives rather than by absent LiDAR: Logan's holds a survey of a county 90 miles away, and Kendall's and Madison's index no archive that exists. Where a survey classified no building points the 57 still ship, but five b6_ columns are constant and the LiDAR detached head cannot be used.

    Elevation outside Illinois comes from a different programme, and the constraint is rarely whether LiDAR exists. Illinois finished at 99 of 102, and all three failures were the published archive rather than the survey — one holds a different county entirely, two index files that do not exist. Expect the same in a new state: five known blocker classes, four of them solvable once identified, and a fifth where the archive is somebody else's survey and nothing can be done.

So expansion is compute and verification, not data acquisition. The part that does not scale by throwing machines at it is accuracy: every figure published here was measured against hand-checked labels for the place it describes, and a new state gets its own labels rather than inheriting Illinois numbers. That is the honest reason this goes state by state.

0

milestones shipped so far

689 / 102

Illinois counties with a sourced coverage row today

3,688,846

houses scored statewide, on 57 LiDAR measurements

See exactly what is covered today →