Contractor Profile

Dorff Constr. CO.

Dorff Constr. CO. concentrates in commercial hvac in New York City (75% of its 12 segment-eligible permits), with secondary activity across 2 other segments. Its permit record in New York City spans 1991–2003.

First permit: Apr 3, 1991 (12,935d ago)Latest permit: Jan 24, 2003 (8,621d ago)
The sales record
Market
New York City
Active
1991–2003 · 12 yrs
Licence IDs on their permits
1
Reliable value
Coverage
Reliable filings
Rank in New York City
#17,411
Permits (all-time, all segments)
28
Filings 90d
0
Filings 30d
0
Latest permit
Jan 24, 2003
Typical project sizeNot enough valued permits to summarize.
Where they work
Firmographics
License & registration IDs on file
  • 0004586

As named in the permit records — identifiers we surface, not verified state licensure.

Direct contactNot in our data — we don’t fabricate firmographics.
What we won’t fabricate

Dorff Constr. CO. has 28 permits, but too few carry a value we can stand behind — so we publish for reliable value, never a guess. They still rank by volume; the dollar figure stays honest.

Below our reliability threshold — too few filings carry a value we stand behind
Service area

Typical service area ~4 mi in New York City

The p90 footprint of where Dorff Constr. CO. has pulled permits in New York City — drawn from all 28 of their indexed permits. It reflects detected permit activity, not a guaranteed service-area claim.

  • NYC28
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Recent permits

Showing 12 of 12 permits by Dorff Constr. CO. in the indexed window · most recent first

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Jan 24, 2003
2680 Broadway, Manhattan, NY 10025
Multifamily Alteration
Jan 24, 2003
2680 Broadway, Manhattan, NY 10025
Multifamily Alteration
Jan 24, 2003
2680 Broadway, Manhattan, NY 10025
Temporary Construction Support
Aug 16, 2000
80 Pine Street, Manhattan, NY 10005
Commercial HVAC
1155 Sixth Avenue, Manhattan, NY 10036
Commercial HVAC
600 Lexington Avenue, Manhattan, NY 10022
Commercial HVAC
17 State Street, Manhattan, NY 10004
Commercial HVAC
1133 Avenue Of The Americas, Manhattan, NY 10036
Commercial HVAC
90 Park Avenue, Manhattan, NY 10016
Commercial HVAC
1155 Avenue Of Americas, Manhattan, NY 10036
Commercial HVAC
1155 Avenue Of Americas, Manhattan, NY 10036
Commercial HVAC
1155 Avenue Of The Americas, Manhattan, NY 10036
Commercial HVAC
Sites Dorff Constr. CO. returns to6 in New York City

Addresses where Dorff Constr. CO. 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.

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