Contractor Profile

Demef Construction CORP

Demef Construction CORP concentrates in multifamily alteration in New York City (68% of its 22 segment-eligible permits), with secondary activity across 2 other segments. Its permit record in New York City spans 2009–2026.

First permit: Aug 7, 2009 (6,233d ago)Latest permit: May 20, 2026 (103d ago)
The sales record
Market
New York City
Active
2009–2026 · 17 yrs
Licenses on file
2
Reliable value
Coverage
Reliable filings
Rank in New York City
#16,218
Permits (all-time, all segments)
32
Filings 90d
0
Filings 30d
0
Latest permit
May 20, 2026
Typical project sizeNot enough valued permits to summarize.
Where they work
Firmographics
License & registration IDs on file
  • 0603174
  • 603174

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

Demef Construction CORP has 32 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
Monthly activity
Nov ’250–1 permits/moMay ’26
permits per month

Monthly value isn’t shown: too few of Demef Construction CORP’s permits carry a reliable valuation, so we publish the count trend only rather than a value line built from gaps.

Service area

Typical service area ~4 mi in New York City

The p90 footprint of where Demef Construction CORP has pulled permits in New York City — drawn from all 32 of their indexed permits. It reflects detected permit activity, not a guaranteed service-area claim.

  • NYC32
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Showing 20 of 22 permits by Demef Construction CORP in the indexed window · most recent first

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May 20, 2026
108 Delancey Street, Manhattan, NY 10002
Commercial Alteration
$119K
Nov 14, 2025
38-30 28 Street, Queens, NY 11101
Commercial Alteration
$79K
Mar 20, 2024
325 West 15 Street, Manhattan, NY 10011
Commercial Alteration
$250K
Jan 6, 2022
309 West 23 Street, Manhattan, NY 10011
Multifamily Alteration
$177K
Jan 6, 2022
309 West 23 Street, Manhattan, NY 10011
Multifamily Alteration
$12K
Jan 14, 2021
10 Amsterdam Avenue, Manhattan, NY 10023
Multifamily Alteration
Residential
Dec 2, 2020
309 West 23rd Street, Manhattan, NY 10011
Multifamily Alteration
Jan 12, 2016
1245 Park Avenue, Manhattan, NY 10128
Multifamily Alteration
Residential
Feb 20, 2013
51 East 97 Street, Manhattan, NY 10029
Multifamily Alteration
Residential
Feb 6, 2013
1409 Madison Avenue, Manhattan, NY 10029
Multifamily Alteration
Residential
Jan 31, 2013
51 East 97 Street, Manhattan, NY 10029
Multifamily Alteration
Residential
Dec 17, 2012
51 East 97 Street, Manhattan, NY 10029
Multifamily Alteration
Residential
Jul 24, 2012
51 East 97 Street, Manhattan, NY 10029
Multifamily Alteration
Residential
Jul 13, 2012
37-08 91 Street, Queens, NY 11372
Temporary Construction Support
Sep 28, 2011
51 East 97th Street, Manhattan, NY 10029
Multifamily Alteration
Residential
Jul 12, 2011
51 East 97 Street, Manhattan, NY 10029
Multifamily Alteration
Residential
Jul 12, 2011
51 East 97 Street, Manhattan, NY 10029
Multifamily Alteration
Residential
Jun 17, 2011
37-08 91 Street, Queens, NY 11372
Temporary Construction Support
May 12, 2011
51 East 97 Street, Manhattan, NY 10029
Multifamily Alteration
Residential
May 9, 2011
51 East 97 Street, Manhattan, NY 10029
Multifamily Alteration
Residential
Sites Demef Construction CORP returns to6 in New York City

Addresses where Demef Construction CORP 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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