# Building permits at 421 E 4th St, Cincinnati, OH

421 E 4th St, Cincinnati has 21 building permits on record. The most recent, issued Aug 24, 2026, is for fire protection systems: Fire Protection Systems

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Aug 24, 2026 | Fire Protection Systems | Fire Protection Systems | $33,000 | [2026P05685](https://nearbypermits.com/cincinnati/permit/2026P05685/) |
| Aug 11, 2026 | Plumbing Permits | Plumbing Permits | $60,000 | [2026P06586](https://nearbypermits.com/cincinnati/permit/2026P06586/) |
| Jul 17, 2026 | Fire Protection Systems | Fire Protection Systems | $37,515 | [2026P05519](https://nearbypermits.com/cincinnati/permit/2026P05519/) |
| May 1, 2026 | HVAC | HVAC | $290,000 | [2026P03012](https://nearbypermits.com/cincinnati/permit/2026P03012/) |
| May 1, 2026 | Building | Alteration | $1,400,000 | [2026P03012](https://nearbypermits.com/cincinnati/permit/2026P03012/) |
| Jul 14, 2025 | Plumbing Permits | Plumbing Permits | $69,000 | [2025P05883](https://nearbypermits.com/cincinnati/permit/2025P05883/) |
| May 20, 2025 | Building | Repair | $492,395 | [2025P04454](https://nearbypermits.com/cincinnati/permit/2025P04454/) |
| May 2, 2025 | HVAC | HVAC | $15,000 | [2025P03963](https://nearbypermits.com/cincinnati/permit/2025P03963/) |
| Apr 11, 2025 | Building | Alteration | $175,000 | [2025P03301](https://nearbypermits.com/cincinnati/permit/2025P03301/) |
| Jun 27, 2023 | Elevator Permit | Elevator Permit | $119,375 | [2023P05223](https://nearbypermits.com/cincinnati/permit/2023P05223/) |
| Oct 6, 2022 | Fire Protection Systems | Fire Protection Systems | $5,600 | [2022P07103](https://nearbypermits.com/cincinnati/permit/2022P07103/) |
| Aug 8, 2022 | Fire Protection Systems | Fire Protection Systems | $5,000 | [2022P06118](https://nearbypermits.com/cincinnati/permit/2022P06118/) |
| Jun 27, 2022 | HVAC | HVAC | $40,000 | [2022P04339](https://nearbypermits.com/cincinnati/permit/2022P04339/) |
| Jun 27, 2022 | Building | Alteration | $80,000 | [2022P04339](https://nearbypermits.com/cincinnati/permit/2022P04339/) |
| Sep 17, 2015 | Plumbing Permits | Plumbing Permits | $17,000 | [2015P06856](https://nearbypermits.com/cincinnati/permit/2015P06856/) |
| Apr 2, 2015 | Plumbing Permits | Plumbing Permits | $945 | [2015P02341](https://nearbypermits.com/cincinnati/permit/2015P02341/) |
| Oct 28, 2014 | HVAC | HVAC | $249,000 | [2014P07277](https://nearbypermits.com/cincinnati/permit/2014P07277/) |
| Nov 1, 2011 | Plumbing Permits | Plumbing Permits | $4,000 | [2011P08198](https://nearbypermits.com/cincinnati/permit/2011P08198/) |
| Nov 1, 2011 | Plumbing Permits | Plumbing Permits | $65,140 | [2011P08197](https://nearbypermits.com/cincinnati/permit/2011P08197/) |
| Apr 15, 2011 | Plumbing Permits | Plumbing Permits | – | [2011P02635](https://nearbypermits.com/cincinnati/permit/2011P02635/) |
| Nov 16, 2010 | Plumbing Permits | Plumbing Permits | $50,000 | [2010P08417](https://nearbypermits.com/cincinnati/permit/2010P08417/) |

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Source: Cincinnati Department of Buildings and Inspections permit data (https://data.cincinnati-oh.gov/d/uhjb-xac9). Checked 2026-10-01 12:07 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/