Permit Record

Mechanical Systems

3810 Neptune Avenue, Brooklyn, NY 11224

ClassificationHVAC / Mechanical
Reliable value$6,000
ContractorTnd Construction INC →
Permit record
Parties
Contractor
Tnd Construction INC
Applicant
Daniel Tsang
Owner
H & Y Building Management INC
Architect
Not in source
Engineer
Not in source
Contractor license
620238
Building & lot · PLUTO
Building class
B2
Zoning district
R3-1
Lot area
4,000 sq ft
Year built
1930
Units (total)
2
Units (residential)
2
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
3070020030
Climate zone (IECC)
4A
Roof area (est.)
908 sq ft
HVAC tonnage (est.)
3 tons
Building type
R
Building subtype
Not in source
Geocode & dates
Coordinates
40.5766, -74.0061
Geocode confidence
95%
Geocode source
Not in source
Issued
Apr 23, 2021
Applied
Not in source
Work class
Not in source
Description
Source description

TO FILE MH MECHANICAL WORK IN CONJUNCTION WITH ALT-2 JOB#322009642

Status
Current status
issued
Source status
Permit Issued
Expired
Jan 28, 2022
Provenance
First seen by PermitCore
May 2, 2026 · 09:37 UTC
Last seen
May 11, 2026 · 23:58 UTC
Last changed
May 2, 2026 · 09:37 UTC

Open in New York City source →

Data-quality checks0 of 12 flagged

0 of 12 data-quality rules flagged anything on this permit.

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
  • Residential units is placeholder
  • Total units out of bounds
  • Total units is placeholder
  • Valuation out of bounds
  • Valuation is placeholder
Project timeline at this parcel

5 permits at this parcel (parcel 3070020030) · Oct 23, 2019 – Apr 23, 2021

  1. Apr 23, 2021This permitMEP Mechanical HVAC · Issued$6,000Tnd Construction INC
  2. Apr 18, 2021329743991MEP Plumbing · Finaled$3,000Crossfield P & H CORP
  3. Oct 23, 2019legacy_jobs:3147596Alteration Commercial · Issued$51,920
  4. Oct 23, 2019legacy_jobs:3147605Alteration Commercial · Issued$51,920
  5. Oct 23, 20193699920Other · IssuedTnd Construction INC

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

Other permits by Tnd Construction INC

Showing up to 12 most-recent permits by this contractor in the indexed window

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Developer details
Permit #
299021094|Mechanical Systems
Canonical ID
1:299021094|Mechanical Systems
Source permit ID
299021094|Mechanical Systems
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