501 HVAC permits issued in Detroit, MI in the last 30 days, from the official open-data records and updated every day. HVAC suppliers, duct cleaners and energy-efficiency companies use system change-out permits to time their outreach.
| Zip code | Permits |
|---|---|
| 48221 | 39 |
| 48213 | 36 |
| 48219 | 36 |
| 48235 | 36 |
| 48228 | 33 |
| 48234 | 31 |
| 48227 | 27 |
| 48223 | 25 |
Each record has the street address, permit type, description, issue date and, where Detroit, MI publishes them, contractor name and job value. Property-owner names are never included. Counts are free; records cost $0.40 per search of up to 100 permits, paid in USDC via x402. No account needed.
GET https://permitinfobroker.com/v1/permits/search?jurisdiction=detroit-mi&category=hvacFree count first: /v1/permits/count?jurisdiction=detroit-mi&category=hvac. AI assistants can use the MCP server at https://permitinfobroker.com/mcp with jurisdiction: "detroit-mi" and category: "hvac". More: how paying per request works.
| Type | Permits |
|---|---|
| plumbing | 1,002 |
| electrical | 387 |
| remodel | 314 |
| windows | 105 |
| commercial | 69 |
| roof | 55 |
| demolition | 37 |
| solar | 26 |
| new homes | 20 |