What was permitted
A permit has been issued for the installation of a sub slab depressurization system at 2900 Nostrand Avenue in Brooklyn's Madison neighborhood. This type of system is crucial for managing radon and other soil gases, often installed in new construction or during renovations to ensure indoor air quality.
This mechanical systems project was issued a permit on July 8, 2026. While the project cost is not listed, the work is being managed by NEW YORK MAJOR CONSTRUCTI (GC).
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View the official permit record
Tracking number, work description, cost and dates
View the official permit record
Tracking number, work description, cost and dates
| Tracking number | 781987014 |
|---|---|
| Work permit # | B00740310-Z4-MS |
| Job filing number | — |
| Work type | Mechanical Systems |
| Status | Permit Issued |
| Job description | INSTALLATION OF A SUB SLAB DEPRESSURIZATION SYSTEM FILED IN CONJUNCTION WITH NB JOB NUMBER B00740310-I1. |
| Floor / unit | Floor Number(s)-1-SO-1889-B00740310-I1, Floor Number(s)-2-SO-1114-B00740310-I1, Floor Number(s)-3-SO-1687-B00740310-I1, Floor Number(s)-4-SO-6951-B00740310-I1, Floor Number(s)-5-SO-3048-B00740310-I1, |
| Estimated cost | Not reported |
| Approved | December 9, 2025 |
| Issued | July 8, 2026 |
| Expires | September 28, 2026 |
| BBL | — |
| BIN | — |
Property owner
Mikerose LLC
Igor Vaysman
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