Contractor Profile
"Koorsen Fire & Security"
"Koorsen Fire & Security" is a diversified Cincinnati contractor — 145 segment-eligible permits spanning 7 segments, led by commercial mep (48%) and commercial fire protection (37%). Its permit record in Cincinnati spans 2010–2026. Reliable permit valuations total ≈$2.8M (across the 89% of filings with a valuation we can stand behind). Filing activity is up 50% over the last 90 days versus the prior 90 — a market heating up.
First permit: Jun 11, 2010 (5,922d ago)Latest permit: Jun 12, 2026 (77d ago)
The sales record
- Market
- Cincinnati
- Active
- 2010–2026 · 16 yrs
- Licenses on file
- 0
- Reliable value
- $2.8M
- Coverage
- 89%
- Reliable filings
- 126
- Rank in Cincinnati
- #144
- Permits (all-time, all segments)
- 142
- Filings 90d
- 6
- Filings 30d
- 5
- Latest permit
- Jun 12, 2026
Typical project size$4Ktypically $3K–$9K across 126 valued permits
Where they work
Firmographics
License & registration IDs on fileNo license records in the source data.
Direct contactNot in our data — we don’t fabricate firmographics.
Monthly activity
Oct ’240–4 permits/moAug ’26
permits per month permit value
Service area
Typical service area ~6 mi in Cincinnati
The p90 footprint of where "Koorsen Fire & Security" has pulled permits in Cincinnati — drawn from 144 mappable permits of 148 indexed (97%). It reflects detected permit activity, not a guaranteed service-area claim.
- Cincinnati148
Recent permitsLargest recent$41K· 525 Elm St, Cincinnati, OH
Showing 20 of 145 permits by "Koorsen Fire & Security" in the indexed window · most recent first
Sort
- Aug 26, 2026Commercial MEP1194 Rulison Av, Cincinnati, OHHVAC / Mechanical · Commercial$7Kapplied Aug 4, 2026
- Aug 14, 2026Commercial MEP6100 Desmond St, Cincinnati, OHHVAC / Mechanical · Commercial$10K
- Aug 14, 2026Commercial MEP270 Southern Av, Cincinnati, OHHVAC / Mechanical · Commercial$10K
- Aug 3, 2026Commercial MEP5920 Hamilton Av, Cincinnati, OHHVAC / Mechanical · Commercial$4Kapplied Jul 23, 2026
- Jun 12, 2026Commercial MEP1301 Main St, Cincinnati, OHHVAC / Mechanical · Commercial$2Kapplied May 13, 2026
- May 19, 2026Residential MEP199 E 6th St, Cincinnati, OHHVAC / Mechanical · Residential$3Kapplied Apr 9, 2026
- May 15, 2026Commercial Fire Protection4241 Allendorf Dr, Cincinnati, OHMEP Fire · Commercial$12Kapplied Apr 29, 2026
- Apr 22, 2026Commercial MEP3065 Vandercar Wy, Cincinnati, OHHVAC / Mechanical · Commercial$3K
- Mar 27, 2026Multifamily Fire Protection2801 Clifton Av, Cincinnati, OHMEP Fire · Residential$4Kapplied Feb 20, 2026
- Feb 24, 2026Commercial MEP3100 Vandercar Wy, Cincinnati, OHHVAC / Mechanical · Commercial$3Kapplied Feb 10, 2026
- Jan 23, 2026Commercial Fire Protection4925 Whetsel Av, Cincinnati, OHMEP Fire · Commercial$3Kapplied Jan 22, 2026
- Jan 6, 2026Commercial MEP3065 Vandercar Wy, Cincinnati, OHHVAC / Mechanical · Commercial$3K
- Dec 19, 2025Commercial MEP2700 Madison Rd, Cincinnati, OHHVAC / Mechanical · Commercial$3Kapplied Dec 12, 2025
- Dec 12, 2025Commercial Fire Protection6020 Montgomery Rd, Cincinnati, OHMEP Fire · Commercial$1Kapplied Dec 4, 2025
- Dec 4, 2025Commercial MEP1 E 6th St, Cincinnati, OHHVAC / Mechanical · Commercial$6K
- Nov 12, 2025Commercial MEP144 W McMillan St, Cincinnati, OHHVAC / Mechanical · Commercial$5K
- Oct 30, 2025Commercial MEP525 Elm St, Cincinnati, OHHVAC / Mechanical · Commercial$41K
- Sep 10, 2025Residential Fire Protection1440 Thomwood Dr, Cincinnati, OHMEP Fire · Residential$8Kapplied Aug 13, 2025
- Apr 17, 2025Commercial MEP1301 Linn St, Cincinnati, OHHVAC / Mechanical · Commercial$4K
- Mar 31, 2025Commercial MEP3065 Vandercar Wy, Cincinnati, OHHVAC / Mechanical · Commercial$2Kapplied Nov 15, 2024
Aug 26, 2026 applied Aug 4, 2026 | 1194 Rulison Av, Cincinnati, OH | Commercial MEP Commercial | $7K |
Aug 14, 2026 | 6100 Desmond St, Cincinnati, OH | Commercial MEP Commercial | $10K |
Aug 14, 2026 | 270 Southern Av, Cincinnati, OH | Commercial MEP Commercial | $10K |
Aug 3, 2026 applied Jul 23, 2026 | 5920 Hamilton Av, Cincinnati, OH | Commercial MEP Commercial | $4K |
Jun 12, 2026 applied May 13, 2026 | 1301 Main St, Cincinnati, OH | Commercial MEP Commercial | $2K |
May 19, 2026 applied Apr 9, 2026 | 199 E 6th St, Cincinnati, OH | Residential MEP Residential | $3K |
May 15, 2026 applied Apr 29, 2026 | 4241 Allendorf Dr, Cincinnati, OH | Commercial Fire Protection Commercial | $12K |
Apr 22, 2026 | 3065 Vandercar Wy, Cincinnati, OH | Commercial MEP Commercial | $3K |
Mar 27, 2026 applied Feb 20, 2026 | 2801 Clifton Av, Cincinnati, OH | Multifamily Fire Protection Residential | $4K |
Feb 24, 2026 applied Feb 10, 2026 | 3100 Vandercar Wy, Cincinnati, OH | Commercial MEP Commercial | $3K |
Jan 23, 2026 applied Jan 22, 2026 | 4925 Whetsel Av, Cincinnati, OH | Commercial Fire Protection Commercial | $3K |
Jan 6, 2026 | 3065 Vandercar Wy, Cincinnati, OH | Commercial MEP Commercial | $3K |
Dec 19, 2025 applied Dec 12, 2025 | 2700 Madison Rd, Cincinnati, OH | Commercial MEP Commercial | $3K |
Dec 12, 2025 applied Dec 4, 2025 | 6020 Montgomery Rd, Cincinnati, OH | Commercial Fire Protection Commercial | $1K |
Dec 4, 2025 | 1 E 6th St, Cincinnati, OH | Commercial MEP Commercial | $6K |
Nov 12, 2025 | 144 W McMillan St, Cincinnati, OH | Commercial MEP Commercial | $5K |
Oct 30, 2025 | 525 Elm St, Cincinnati, OH | Commercial MEP Commercial | $41K |
Sep 10, 2025 applied Aug 13, 2025 | 1440 Thomwood Dr, Cincinnati, OH | Residential Fire Protection Residential | $8K |
Apr 17, 2025 | 1301 Linn St, Cincinnati, OH | Commercial MEP Commercial | $4K |
Mar 31, 2025 applied Nov 15, 2024 | 3065 Vandercar Wy, Cincinnati, OH | Commercial MEP Commercial | $2K |
Sites "Koorsen Fire & Security" returns to6 in Cincinnati
Addresses where "Koorsen Fire & Security" has pulled repeat permits and the site itself has a deep permit history (25+ permits, all contractors). Each links to that parcel’s full record.
Other top Commercial MEP contractors in Cincinnati
- "Debra-Kuempel"401 commercial mep
- "John E Carrigan Plumbing CO"373 commercial mep
- "Robert Jones Plumbing INC"352 commercial mep
- "Brakefire INC Dba Silco Fire Protection CO"309 commercial mep
- "The Nelson Stark CO"279 commercial mep
- "Ken Neyer Plumbing"241 commercial mep
Put "Koorsen Fire & Security" on your call list.
Watch this contractor, get a daily email when they pull a new permit, and explore Cincinnati permits in the Market Explorer — enriched and parcel-joined.