I turn public records into decision instruments — the homeowners-insurance repricing of 3,142 counties, the insurance-adjusted cap rate every stale pro-forma is missing, what an AI campus announcement does to the housing market around it, a property-underwriting ETL pipeline, a Nashville neighborhood intelligence map. Economics background, real-world operator, self-directed engineer. Two rules: ship something that actually runs, and never blur the line between what's SOURCED and what's MODELED.
| Project | What it is | Live |
|---|---|---|
| The Premium Map | The homeowners-insurance crisis as a national instrument — premium escalation, non-renewals, loss ratios, and insurer exits across 3,142 counties, built from Treasury/FIO, Senate, NOAA, and FEMA records. | ▶ launch |
| CAP//RATE | The insurance-adjusted cap rate map — every county re-underwritten at its 2021 premium vs. today's, the drag in basis points, and a deal calculator with shareable deep links. The Premium Map's companion piece. | ▶ launch |
| DATACENTER//HALO | A ZIP-ring event study of what an AI campus announcement does to the housing market around it — thirteen markets, three archetypes (boomtowns, absorbers, anti-halos), built on Zillow, Census permits, and the gigawatt-race roster. | ▶ launch |
| The Gigawatt Race | County-level atlas of the American AI datacenter buildout, 2020–2028 — capacity, power source, water, tax abatements. The open version of what paywalled trackers sell. | ▶ launch |
| RealtyETL | ETL + BI for property profitability — DuckDB warehouse, Prefect orchestration, cap-rate/NOI/GRM scoring, Streamlit dashboard, 20+ test suite. | repo |
| Nash / Shift | Nashville neighborhood intelligence, 1980–2035 — 267 neighborhoods, opportunity scoring with named drivers and execution risks, investor/resident/planner lenses. | ▶ launch |
| The Chart of the Century | U.S. price divergence since 2000 — competitive sectors fell, regulated sectors soared — with a personal-inflation calculator built on BLS data. | ▶ launch |
| Project | What it is | Live |
|---|---|---|
| Poseidon | Maritime-intelligence console — live AIS vessel tracking, dark-ship detection, geofence analytics, structured Claude threat assessments. | ▶ launch |
| Orbital Viz | Real-time 3D satellite & debris tracker — SGP4 propagation in a Web Worker, Three.js point cloud, live Space-Track ingestion. | ▶ launch |
| Provenance | A citation tracer for statistics that travel — fourteen famous numbers traced to their primary sources, with the exact drift redlined. | ▶ launch |
| Project | What it is | Live |
|---|---|---|
| The War Room Atlas | Eighteen self-contained interactive instruments for reading power — empires, wars, migrations, cities. One build pipeline, one design language. | ▶ dispatch board |
| The Great Inversion | How air conditioning moved the American population south, 1900–2025 — the demand story under every Sunbelt housing market. | ▶ launch |
| The Peopling of America | Every U.S. census 1790–2020 as a county dot-atlas — three thousand counties, one dot at a time. | ▶ launch |
| Project | What it is |
|---|---|
| minigpt | A decoder-only Transformer in ~300 readable lines of raw PyTorch — every moving part visible, zero borrowed weights. |
| cumberland | A local-LLM lab: from-scratch BPE tokenizer, pretraining, SFT persona shaping, and an agent harness. |
| Recidivism, revisited | NIJ Recidivism Forecasting Challenge model + a 2026 re-analysis showing re-offending concentrates in a persistent cohort. |
How I work: Most of these ship as a single self-contained index.html — React and data inlined, no servers, no keys, open it anywhere and it runs forever. Every figure on the board is labeled SOURCED (archival/record-derived) or MODELED (constructed/interpolated/forecast). The line is never blurred.
Designed and directed by me; built in collaboration with AI. The research direction, architecture, historical judgment, error-catching, and product decisions are the human contribution — and the framing always says so, because that honesty is the point.
📍 Nashville, TN · 📧 ashbybrewer@gmail.com