Updated: Nov 13, 2025
Location and Projects
Address
30 GAYNOR STREET, Manhasset, NY, 11030
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Rockwood Development Construction
Based in Manhasset, NY, Rockwood Development delivers custom home construction and residential renovation throughout Long Island. The firm specializes in new builds, whole-home remodels, and significant additions for homeowners seeking to upgrade or expand their living spaces. Portfolio projects highlight expertise in high-end single-family residences, ranging from traditional estate-style homes to modern designs. Rockwood Development manages all phases of construction, from initial site planning and architectural coordination to interior detailing and final finishes. The company undertakes projects across Nassau County, with a focus on the North Shore communities, including Manhasset, Great Neck, and surrounding neighborhoods. With nine years in operation, Rockwood Development works closely with clients from the earliest design concepts through project completion, ensuring each home aligns with the owner’s vision and lifestyle requirements.
Rockwood Development Services
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Rockwood Development Contact Information
Phone Number: (516) 652-1858
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Address: 30 GAYNOR STREET, Manhasset, NY 11030
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This is a sample of this contractor's permits. Click here to access their complete permit history.
No Description Available
Valuation:
N/A
Permit #:
123834084-01-EW-OT
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Alteration type 2 - gen. constr. interior renovation of existing 2- family residence. scope includes partition doors windows plumbing mechanical electrical fixtures & finishes. no change to use egress or occupancy
Valuation:
$698,000
Permit #:
340601174-01-EW-OT
Status:
issued
Fee:
$1,846
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$1,495,695
Permit #:
123417383-01-AL
Status:
issued
Fee:
$11,208
Permit Type:
N/A
Building Type:
N/A
Alteration type 2 - structural structural work for new roof terrace and re-framing existing roof. provide new structural support for window and door openings
Valuation:
$171,775
Permit #:
123834084-02-EW-OT
Status:
issued
Fee:
$2,089
Permit Type:
N/A
Building Type:
N/A
Alteration type 1 required to meet new building requirements (28-101.4.5) big alteration type i to comply with bc 28-101.4.5 for proposed seven (7) family residential development. building to comply with quality housing regulations. new plumbing, mechanical and sprinkler work. new interior layout. new facades. increase in bulk and far. change in use and occupancy
Valuation:
$15,310
Permit #:
321924904-01-AL
Status:
issued
Fee:
$414
Permit Type:
N/A
Building Type:
N/A
New building - foundation/earthwork proposed 4 story w penthouse and cellar 6 dwelling unit residence
Valuation:
N/A
Permit #:
321387888-01-FO
Status:
issued
Fee:
$1,410
Permit Type:
N/A
Building Type:
N/A
New building - earthwork proposed 4 story w penthouse and cellar 6 dwelling unit residence
Valuation:
N/A
Permit #:
321387888-01-FO-EA
Status:
issued
Fee:
$1,410
Permit Type:
N/A
Building Type:
N/A
New building - proposed 4 story w penthouse and cellar 6 dwelling unit residence
Valuation:
N/A
Permit #:
321387888-01-NB
Status:
issued
Fee:
$1,410
Permit Type:
N/A
Building Type:
N/A
New building - foundation/earthwork proposed 7 story residential buildind with cellar with 14 class a apartments
Valuation:
N/A
Permit #:
220474467-01-FO
Status:
issued
Fee:
$3,695
Permit Type:
N/A
Building Type:
A2-1 family dwelling
New building - earthwork proposed 7 story residential buildind with cellar with 14 class a apartments
Valuation:
N/A
Permit #:
220474467-01-FO-EA
Status:
issued
Fee:
$3,695
Permit Type:
N/A
Building Type:
A2-1 family dwelling
New building - proposing 5 story, mezzanine residential builidng - 10 dwelling units
Valuation:
N/A
Permit #:
321321360-01-NB
Status:
issued
Fee:
$2,951
Permit Type:
N/A
Building Type:
V1-vacant land
Alteration type 2 - structural herewith filed for building structural in conjunction with nb # 220474467
Valuation:
$500
Permit #:
220594015-01-EW-OT
Status:
issued
Fee:
$225
Permit Type:
N/A
Building Type:
A2-1 family dwelling
Alteration type 1 - renovation horizontal enlargement and conversion of an existing 3 family residential townhouse to a single family town house on cellar basement 1 thru 3 and roof. architectural and plumbing work. a new certificate of occupancy to be obtained
Valuation:
$607,500
Permit #:
321197227-01-AL
Status:
issued
Fee:
$3,275
Permit Type:
N/A
Building Type:
C0-walk-up apartment
Alteration type 1 required to meet new building requirements (28-101.4.5) vertical expansion of an existing 2 story 2 family dwelling and conversion to multiple dwelling including change of construction class
Valuation:
$291,000
Permit #:
320892780-01-AL
Status:
issued
Fee:
$3,972
Permit Type:
N/A
Building Type:
C2-walk-up apartment
No Description Available
Valuation:
N/A
Permit #:
220474467-02-NB
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Alteration type 1 - existing 3 story masonry building to remain. vertical extension 1 floor plus penthouse and horizontal extension. new storefront reducing from 3 apts to 2 apts
Valuation:
$795,000
Permit #:
321590104-01-AL
Status:
issued
Fee:
$8,438
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
220474467-01-NB
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New building - foundation/earthwork new building application for residential building with 38 class a dwelling units and parking in the cellar
Valuation:
N/A
Permit #:
321478664-01-FO
Status:
issued
Fee:
$8,647
Permit Type:
N/A
Building Type:
W9-educational struc
New building - earthwork new building application for residential building with 38 class a dwelling units and parking in the cellar
Valuation:
N/A
Permit #:
321478664-01-FO-EA
Status:
issued
Fee:
$8,647
Permit Type:
N/A
Building Type:
W9-educational struc
New building - new building application for residential building with 38 class a dwelling units and parking in the cellar
Valuation:
N/A
Permit #:
321478664-01-NB
Status:
issued
Fee:
$8,647
Permit Type:
N/A
Building Type:
W9-educational struc
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Rockwood Development License info
License Not Verified
| License # | 026144 |
| Status | Active |
| State | New York |
| Type | Superintendent Of Construction |
| Date Issued | 10-14-2025 |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Rockwood Development with the New York City Department of Buildings
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 618680 |
| Status | Inactive |
| State | New York |
| Type | General Contractor Registered, General Contractor Registered |
- According to the New York City Department of Buildings, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Rockwood Development at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Insured
| Insurer | Peleus Insurance Co |
Insured
| Workers Comp Provider | Nysif |
11
Permits
- Building permit records show that Rockwood Development has worked on 11 permitted projects.