Contractor Profile

Cornerstone Builders Ny L

Name shown as recorded. This name is cut off at 25 characters by the New York City source. The full name is not published in any NYC dataset, so we show exactly what the record contains.

Cornerstone Builders Ny L is a diversified New York City contractor — 107 segment-eligible permits spanning 3 segments, led by multifamily alteration (50%) and temporary construction support (42%). Its permit record in New York City spans 2012–2026. Reliable permit valuations total ≈$12.8M (across the 58% of filings with a valuation we can stand behind).

First permit: Jul 17, 2012 (5,159d ago)Latest permit: Jul 9, 2026 (54d ago)
The sales record
Market
New York City
Active
2012–2026 · 14 yrs
Licence IDs on their permits
2
Reliable value
$12.8M
Coverage
58%
Reliable filings
45
Rank in New York City
#3,653
Permits (all-time, all segments)
231
Filings 90d
3
Filings 30d
0
Latest permit
Jul 9, 2026
Typical project size$3Ktypically $2K–$10K across 45 valued permits
Where they work
Firmographics
License & registration IDs on file
  • 0609258
  • 609258

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

Direct contactNot in our data — we don’t fabricate firmographics.
Monthly activity
Apr ’250–7 permits/moJul ’26
permits per month permit value
Service area

Typical service area ~1 mi in New York City

The p90 footprint of where Cornerstone Builders Ny L has pulled permits in New York City — drawn from all 232 of their indexed permits. It reflects detected permit activity, not a guaranteed service-area claim.

  • NYC232
Find Multifamily Alteration contractors near your branchEnter your address — see who’s pulling these permits in your radius.

Showing 20 of 107 permits by Cornerstone Builders Ny L in the indexed window · most recent first

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Jul 9, 2026
161 Middleton Street, Brooklyn, NY 11206
Temporary Construction Support
Jul 9, 2026
161 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
Residential
Jun 22, 2026
405 Marcy Avenue, Brooklyn, NY 11206
Multifamily Alteration
$101K
Sep 29, 2025
405 Marcy Avenue, Brooklyn, NY 11206
Multifamily Alteration
$30K
Jul 28, 2025
405 Marcy Avenue, Brooklyn, NY 11206
Multifamily Alteration
$456K
Jul 16, 2025
161 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
Residential
Jul 15, 2025
200 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
Residential
$2.0M
Jul 9, 2025
161 Middleton Street, Brooklyn, NY 11206
Temporary Construction Support
Jul 9, 2025
161 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
Residential
Jul 8, 2025
161 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
Jul 8, 2025
161 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
May 7, 2025
161 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
May 7, 2025
161 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
Apr 30, 2025
161 Middleton Street, Brooklyn, NY 11206
Temporary Construction Support
Apr 30, 2025
161 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
Residential
Jul 29, 2024
30 Bartlett Street, Brooklyn, NY 11206
Multifamily Alteration
Residential
$10K
Jul 17, 2024
200 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
Residential
$2.0M
May 9, 2024
124 Pulaski Street, Brooklyn, NY 11206
Temporary Construction Support
$160
Apr 8, 2024
200 Middleton Street, Brooklyn, NY 11206
Multifamily Alteration
$3K
Feb 26, 2024
89 Franklin Avenue, Brooklyn, NY 11205
Temporary Construction Support
$100
Sites Cornerstone Builders Ny L returns to6 in New York City

Addresses where Cornerstone Builders Ny L 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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