Updated: Jun 06, 2026
Location and Projects
Address
305 Hillside Avenue, Williston Park, NY, 11596
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Casur Corporation Construction
Serving Williston Park and the surrounding Long Island area, Casur Corporation brings over three decades of experience to residential and commercial construction projects. Established 33 years ago, the company has managed a variety of building and renovation work across Nassau County. Casur Corporation is equipped to handle both new construction and remodeling for different property types, reflecting a broad portfolio of projects that range from home additions to interior build-outs. The company’s work demonstrates a familiarity with local building requirements and project management from planning through completion. Clients throughout Williston Park and neighboring communities rely on Casur Corporation for construction services that address the specific needs of both residential and light commercial properties.
Casur Corporation Services
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Casur Corporation Contact Information
Phone Number: (212) 410-0270
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Address: 305 Hillside Avenue, Williston Park, NY 11596
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Casur Corporation Williston Park
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Casur Corporation has a BuildZoom score of 108, which places them above 95% of 77,888 contractors in New York.
Activity
|
9 projects
|
2025 |
|
6 projects
|
2024 |
|
10 projects
|
2023 |
Our building permit records indicate that Casur Corporation has worked on at least
25.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
3 projects
|
Commercial Renovations |
Analyzing permits over the last 4 years shows that Casur Corporation mostly works on
commercial renovation
projects.
Pricing
|
1 project
|
$5k-$20k |
|
5 projects
|
$20k-$50k |
|
11 projects
|
$50k-$100k |
|
8 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
The typical size of their permits is approximately $75,000. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Gut renovation to apartment 2s & 2n on the 2nd 3s&3n on 3rd 4s & 4n on 4th 5s & 5n on 5th fl and 4th-5th fl hallways. work will include new partitions & finishes new kitchen bathroom floor windows stairs ceiling & roof no change in use egress or oc
Valuation:
$703,804
Permit #:
M01215800-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Repair of half-timber bearing walls reinforcement of floor joists replacement of floor joists repair of the facades and connecting the facades to the wooden floors reinforce roof structure repoint brick front facades repoint and repair masonry chi
Valuation:
$177,750
Permit #:
M00937398-I1-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Repair of half-timber bearing walls reinforcement of floor joists replacement of floor joists repair of the facades & connecting the facades to the wooden flrs reinforce roof structure repoint brick front facades repoint & repair masonry chimneys
Valuation:
$170,775
Permit #:
M00937404-I1-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Minor demolition with installation of new partitions doors suspended ceilings and finishes on the (penthouse -studio in the heights) as per plans. no change to use egress or occupancy
Valuation:
$147,000
Permit #:
M01163681-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical work in conjunction with the conversion of retail space (1a) to residential unit (1a) located on the 1st floor. altering interior partitions within. new co to be obtained
Valuation:
$25,000
Permit #:
M01061041-S2-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Conversion of retail space (1a) to residential unit (1a) located on the 1st floor. altering interior partitions within. new co to be obtained
Valuation:
$90,000
Permit #:
M01061041-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction to renovate apartment 9 on the 3rd floor. work will include new partitions & finishes and new plumbing fixtures. no change in use egress or occupancy under this filing
Valuation:
$75,000
Permit #:
M01218781-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Structural repairs to include joist replacement joist sistering repointing reframing and painting of the fire escape. no change to use bulk or egress
Valuation:
$151,200
Permit #:
M01065632-I1-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Propose interior renovation in residential apartment with minor interior partition work with no structural intervention. related plumbing application #m01075646-i1. no change in use egress or occupancy
Valuation:
$50,000
Permit #:
M01075645-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior apartment renovation as per plans filed herewith. no change to use egress or occupancy
Valuation:
$255,400
Permit #:
M00541061-S1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction work in conjunction with structural work within apartment 32 located on the 003 floor and apartment 22 located on the 002 floor. no change in use occupancy or egress
Valuation:
$32,000
Permit #:
M08010654-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Front and rear facade restoration with roof dormer reconstruction as per plans. no change to use egress or bulk
Valuation:
$75,000
Permit #:
M01068526-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Front and rear facade restoration with roof dormer reconstruction as per plans. no change to use egress or bulk
Valuation:
$75,000
Permit #:
M01105336-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Reconstruction of front dormer and reinforcement of rear dormer framing. no change to use occupancy or egress. new slab-on-grade at mechanical room in basement
Valuation:
$75,000
Permit #:
M01105344-I1-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Minor partition work in existing commercial space with general carpentry. change of use from eating and drinking establishment to retail store. no change to bulk or egress
Valuation:
$52,000
Permit #:
B00822291-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Alteration type 2 - gen. constr. filing for interior renovation of cellar level office space as per plans submitted herewith. no change to use egress or occupancy
Valuation:
$325,500
Permit #:
321620643-01-EW-OT
Status:
issued
Fee:
$1,480
Permit Type:
N/A
Building Type:
N/A
General construction & structural work to remove existing masonry parapet along rockaway parkway & avenue j frontages & replace with new as per plans filed herewith. no change to egress use or occupancy
Valuation:
$56,000
Permit #:
B00882086-I1-GC-CX
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Structural support to existing cracked brownstone stoop at building main entrance. no change in use egress or occupancy
Valuation:
$30,000
Permit #:
M00921287-I1-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Facade & roof repairs. no change to use egress or bulk
Valuation:
$125,000
Permit #:
M01051939-I1-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction & structural work for proposed horizontal extension at rear of second & third floor. interior & exterior renovations as per plans filed herewith
Valuation:
$60,560
Permit #:
B00580011-I1-GC-CX
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Recent Buildzoom Projects
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Verified License
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Casur Corporation License info
Verified License
| License # | 204220 |
| Status | Active |
| County | Nassau County |
| Type | Home Improvement Contractors |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for Casur Corporation at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | H18H7070000 |
| Status | Active |
| County | Nassau County |
| Type | Home Improvement Contractors |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for Casur Corporation at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 2067923-DCA |
| Status | Active |
| State | New York |
| Type | Home Improvement Contractor |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Casur Corporation at the New York Department of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 611846 |
| Status | Active |
| State | New York |
| Type | Gc Safety Registration, Gc Safety Registration, Gc Safety Registration |
- When BuildZoom last verified this license, it had an expiration date of January, 2026. Check the current license status of Casur Corporation with the New York City Department of Buildings
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 27619 |
| Status | Active |
| State | New York |
- When BuildZoom last verified this license, it had an expiration date of December, 2015. Check the current license status of Casur Corporation with the New York City Department of Buildings
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | H18G32800 |
| Status | Active |
| County | Nassau County |
- When BuildZoom last verified this license, it had an expiration date of December, 2015. Check the current license status of Casur Corporation with the Nassau County Office of Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1407856-DCA |
| Status | Inactive |
| State | New York |
| Type | Home Improvement Contractor |
- According to the New York Department of Consumer Affairs, 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 Casur Corporation at the New York Department of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | Westchester County |
| Type | Home Improvement Contractor |
- According to the Consumer Westchester County, NY, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | H18H70700 |
| Status | Inactive |
| County | Nassau County |
| Type | Home Improvement Contractors |
- According to the Nassau County Office of Consumer Affairs, 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 Casur Corporation at the Nassau County Office of Consumer Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 027619 |
| Status | Inactive |
| State | New York |
| Type | Gc Safety Registration, Gc Safety Registration, Gc Safety Registration |
- 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 Casur Corporation at the New York City Department of Buildings.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
Insured
| Insurer | State National Ins Co Inc |
Insured
| Workers Comp Provider | Continental Indemnity Co |
381
Permits
- Building permit records show that Casur Corporation has worked on 381 permitted projects.
Casur Corporation Employees
JO
Jennifer L Osullivan
President
OD
Osullivan Sean D.
SO
Sean D O'sullivan
President
SO
Sean D Osullivan
President
SS
Sean O Sullivan
Owner
Intelligent, honest, high quality work, quick. Has done a number of different jobs for us and we recommend him highly.