Permit Record

Mechanical Systems

841 Madison Street, Brooklyn, NY 11221

ClassificationHVAC / Mechanical
Reliable value$5,000
ContractorCavalry LLC →
Permit record
Parties
Contractor
Cavalry LLC
Applicant
Chany Rosen
Owner
Ttn
Architect
Not in source
Engineer
Not in source
Contractor license
619730
Building & lot · PLUTO
Building class
W3
Zoning district
R6B
Lot area
3,750 sq ft
Year built
1931
Units (total)
1
Units (residential)
0
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
3014810056
Climate zone (IECC)
4A
Roof area (est.)
2,375 sq ft
HVAC tonnage (est.)
19 tons
Building type
E
Building subtype
Not in source
Geocode & dates
Coordinates
40.6880, -73.9224
Geocode confidence
95%
Geocode source
Not in source
Issued
Mar 2, 2023
Applied
Not in source
Work class
Not in source
Description
Source description

Install mechanical system as per plan.

Status
Current status
finaled
Source status
Signed-off
Finaled
Aug 11, 2022
Expired
Jun 30, 2023
Provenance
First seen by PermitCore
May 2, 2026 · 09:34 UTC
Last seen
May 11, 2026 · 23:56 UTC
Last changed
May 2, 2026 · 09:34 UTC

Open in New York City source →

Data-quality checks1 of 12 flagged

1 of 12 data-quality checks flagged on this permit. Detail below.

Residential units is placeholder
units_residential_is_placeholder

units_residential matched a known placeholder value used by the source when the field wasn't reported.

Checks not flagged

  • Geocode out of bounds
  • Geocode is sentinel
  • Issued date in the future
  • Issued date parse bug
  • Issued date is placeholder
  • Commercial units is placeholder
  • Residential units out of bounds
  • Total units out of bounds
  • Total units is placeholder
  • Valuation out of bounds
  • Valuation is placeholder
Project timeline at this parcel

16 permits at this parcel (parcel 3014810056) · through Mar 2, 2023

  1. Mar 2, 2023This permitMEP Mechanical HVAC · Finaled$5,000Cavalry LLC
  2. Oct 26, 2022656910403MEP Plumbing · Finaled$2,000Dynamic Plbg & Sprklr Cor
  3. Jan 16, 2019legacy_jobs:3049038Other · Finaled
  4. Oct 30, 2018legacy_jobs:3055704Alteration Commercial · Finaled$50,000
  5. Oct 30, 2018legacy_jobs:3001202Alteration Commercial · Finaled$600,000
  6. Oct 30, 2018legacy_jobs:3055713Alteration Commercial · Finaled$50,000
  7. Oct 30, 2018633420MEP Plumbing · IssuedBest Mechanical Svcs INC
  8. Oct 25, 2018514051Alteration Commercial · IssuedCavalry LLC
  9. Aug 10, 20173421243OtherPioneer General Construct
  10. Jun 9, 20173385171OtherT&s Home Improvement INC
  11. Date not usable in source538023Alteration Commercial · IssuedSunset Plg & Htg
  12. Date not in sourcelegacy_jobs:2862101Alteration Commercial · Issued$53,000
  13. Date not in sourcelegacy_jobs:3049868Alteration Commercial · Finaled
  14. Date not in sourcelegacy_jobs:3049877Alteration Commercial · Finaled
  15. Date not in sourcelegacy_jobs:2862110Alteration Commercial · Issued$53,000
  16. Date not in sourcelegacy_jobs:2798289Alteration Commercial · Issued$53,000

Full permit history at this parcel · as of Jul 9, 2026.

Other permits by Cavalry LLC

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Developer details
Permit #
233094622|Mechanical Systems
Canonical ID
1:233094622|Mechanical Systems
Source permit ID
233094622|Mechanical Systems
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