Contractor Profile

Rock & Hammer Constructio

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.

Rock & Hammer Constructio concentrates in multifamily alteration 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 2019–2026.

First permit: May 7, 2019 (2,673d ago)Latest permit: Feb 26, 2026 (186d ago)
The sales record
Market
New York City
Active
2019–2026 · 7 yrs
Licenses on file
2
Reliable value
—
Coverage
—
Reliable filings
—
Rank in New York City
#18,388
Permits (all-time, all segments)
25
Filings 90d
0
Filings 30d
0
Latest permit
Feb 26, 2026
Typical project sizeNot enough valued permits to summarize.
Where they work

Primarily Multifamily Alteration — 75% of 12 segment-classified permits

Ranked #16,266 in the New York City Multifamily Alteration leaderboard →
Firmographics
License & registration IDs on file
  • 0618904
  • 618904

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

Rock & Hammer Constructio has 25 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
Jan ’260–1 permits/moFeb ’26
permits per month

Monthly value isn’t shown: too few of Rock & Hammer Constructio’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 ~10 mi in New York City

The p90 footprint of where Rock & Hammer Constructio has pulled permits in New York City — drawn from all 25 of their indexed permits. It reflects detected permit activity, not a guaranteed service-area claim.

  • NYC25
Find Multifamily Alteration contractors near your branchEnter your address — see who’s pulling these permits in your radius.
Recent permitsLargest recent$130K· 595 Mac Donough Street, Brooklyn, NY 11233

Showing 12 of 12 permits by Rock & Hammer Constructio in the indexed window · most recent first

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Feb 6, 2026
96 Schermerhorn Street, Brooklyn, NY 11201
Multifamily Alteration
$110K
Jan 29, 2026
595 Mac Donough Street, Brooklyn, NY 11233
Commercial Alteration
$130K
Jun 5, 2024
51 7 Avenue, Brooklyn, NY 11217
Multifamily Alteration
Residential
$18K
Feb 9, 2024
151 Grand Street, Brooklyn, NY 11249
Multifamily Alteration
$30K
Mar 3, 2023
30 Monroe Place, Brooklyn, NY 11201
Multifamily Alteration
$20K
Dec 15, 2021
408 West 25 Street, Manhattan, NY 10001
Multifamily Alteration
$12K
Apr 26, 2021
241 Nelson Avenue, Staten Island, NY 10308
Temporary Construction Support
$3K
Aug 10, 2020
241 Nelson Avenue, Staten Island, NY 10308
Temporary Construction Support
$3K
Jun 9, 2020
applied Mar 27, 2020
65 Middagh Street, Brooklyn, NY 11201
Multifamily Alteration
Residential
—
Sep 10, 2019
605 57 Street, Brooklyn, NY 11220
Multifamily Alteration
Residential
—
Jul 30, 2019
applied Jun 17, 2019
74 First Place, Brooklyn, NY 11231
Multifamily Alteration
Residential
—
May 7, 2019
605 57 Street, Brooklyn, NY 11220
Multifamily Alteration
Residential
—
Sites Rock & Hammer Constructio returns to5 in New York City

Addresses where Rock & Hammer Constructio 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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