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Location and Projects

Address
575 Underhill Blvd, Syosset, NY, 11791
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ADI Contracting Construction

We are a family-owned, full-service General Contracting company servicing the Tri-State area. We have been in business for over 30 years and are a New York State WBE Certified company.

From BuildZoom: ADI Contracting, LLC, 575 Underhill Blvd, Syosset, NY (Owned by: Cynthia Orendach) holds a Home Improvement Contractors license and 2 other licenses according to the Nassau County license board.

Their BuildZoom score of 89 does not rank in the top 50% of New York contractors.

Their license was verified as active when we last checked. If you are thinking of hiring ADI Contracting, LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.

ADI Contracting, LLC Contact Information

Phone: (516) 496-1405
Address: 575 Underhill Blvd, Syosset, NY 11791

ADI Contracting, LLC Syosset

Quality

89
30th percentile
How is the BuildZoom score calculated?
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
ADI Contracting, LLC has a BuildZoom score of 89, which places them above 30% of 77,888 contractors in New York.

Activity

5 projects
 2025
1 project
 2024
5 projects
 2023
Our building permit records indicate that ADI Contracting, LLC has worked on at least 11.0 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.

Experience

6 projects
 Commercial Renovations
Analyzing permits over the last 4 years shows that ADI Contracting, LLC mostly works on commercial renovation projects.

Pricing

1 project
 $5k-$20k
4 projects
 $20k-$50k
3 projects
 $100k-$250k
2 projects
 $250k-$500k
1 project
 $1mil+
Value Not Public: 1.0 project
The typical size of their permits is approximately $38,950. 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.

ADI Contracting, LLC Reviews
1 out of 5 stars, based on 1 review

  • By Unhappy C.
    October 22, 2018
    Parking lot
    $100,000

    I rely heavily on customer feedback when picking a company to do business with.
    I hope to save someone from a nightmare.
    Hired to pave a parking lot, now left with cracks, uneven ground and there have been numerous accidents due to their configuration and neglect!
    They refuse to correct their mistakes and to top it off, The “Managing Member” Cynthia Orendach belittles her customers and pushes them around. The other MM Philip Alfieri who we believe is her husband doesn’t return his customers phone messages, we’re assuming so he doesn’t have to fix the problems!

    The real deal! Crooks!
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Building Permits by ADI Contracting, LLC

Sort by: Notable Notable | Date Date | Job Value Job Value

This is a sample of this contractor's permits. Click here to access their complete permit history.

General construction
268-13 76th Ave, New Hyde Park, NY, 11040
2025-01-01
Doctor's on call: rearrange interior non-bearing partitions install hung ceiling wall and floor finishes as per plans filed herewith. no change in use occupancy or egress under this application
Valuation:
$184,755
Permit #:
Q01070939-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
95-25 Queens Blvd, Rego Park, NY, 11374
2024-06-29
Demolish air devices and associated ductwork as indicated provide two (2) new split systems with outside air intake gooseneck and ductwork. provide new exhaust fan and associated ductwork provide new cabinet unit heater
Valuation:
$27,000
Permit #:
Q00855197-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
268-13 76th Ave, New Hyde Park, NY, 11040
2025-01-01
Northwell health lij medical center - doctor's on call project: modify mechanical systems to conform with new layouts
Valuation:
$38,899
Permit #:
Q01073164-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
23-25 31st St, Astoria, NY, 11105
2025-09-19
Minor interior alterations to an existing medical office
Valuation:
$209,999
Permit #:
Q01262858-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
90 E End Ave, New York, NY, 10028
2025-10-08
Minor interior elevation of an existing office to convert two existing rooms to exam rooms
Valuation:
$218,993
Permit #:
M01294377-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
9036 7th Ave, Brooklyn, NY, 11228
2023-01-01
Herewith file facade restoration of facade as per plans
Valuation:
$350,000
Permit #:
B00676238-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
73-9 Myrtle Ave, Ridgewood, NY, 11385
2023-06-29
Interior renovation of existing office space. all work as per plans filed herewith. no change in use egress or occupancy
Valuation:
$37,000
Permit #:
Q00850672-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
23-25 31st St, Astoria, NY, 11105
2023-06-29
Hereby filing for the demolish of existing interior walls. patch and repair as required. no change to use occupancy or egress
Valuation:
$10,000
Permit #:
Q00884857-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
95-25 Queens Blvd, Rego Park, NY, 11374
2024-01-01
General construction associated with tenant buildout - vivo no other change
Valuation:
$25,000
Permit #:
Q00854867-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
135 Montague St, Brooklyn, NY, 11201
2023-01-01
This application is to change in use and occupancy on the 2nd floor from retail to office and installation of ada ramp on front entrance
Valuation:
$5,000
Permit #:
B00608038-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
95-25 Queens Blvd, Rego Park, NY, 11374
2023-01-01
Mechanical modifications to the 3rd floor as per plans filed herewith. no change in use egress or occupancy
Valuation:
$24,990
Permit #:
Q00486884-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
A2 - alteration type 2
1091 Park Ave, New York, NY, 10128
2018-08-13
Alteration type 2 - mech/hvac hereby filing in conjunction with interior alteration work to provide a heating air conditioning and ventilation design a plumbing design and electrical plan for existing medical offices. no change in use egress or occupancy
Valuation:
$76,500
Permit #:
123550451-02-EW-MH
Status:
issued
Fee:
$987
Permit Type:
N/A
Building Type:
D4-elevator apart...
Mechanical systems
200-16 44th Ave, Bayside, NY, 11361
2020-08-10
Northwell health: pediatrics: modify mechanical systems @ 2nd floor medical office to conform with new room lay-outs; install hvac unit on roof
Valuation:
$60,000
Permit #:
Q00345358-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
A2 - alteration type 2
132 Ave A, # 65, New York, NY, 10009
2019-04-22
Alteration type 2 - mech/hvac filing application for mechanical and sprinkler work as per plans filed herewith. no change in use egress or occupancy
Valuation:
$38,200
Permit #:
123375677-02-EW-MH
Status:
issued
Fee:
$596
Permit Type:
N/A
Building Type:
R0-condominiums
General construction
135 Montague St, Brooklyn, NY, 11201
2023-01-01
Interior renovation including partitions and flooring on 2nd floor. no change in use egress or occupancy
Valuation:
$39,000
Permit #:
B00617245-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
1776 Richmond Rd, Staten Island, NY, 10306
2021-06-29
Installation of hvac units and related ductwork and devices. no change of use egress or occupancy
Valuation:
$37,000
Permit #:
S00325431-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
A2 - alteration type 2
25 W 45th St, New York, NY, 10036
2018-04-26
Alteration type 2 - mech/hvac modifications to the existing hvac system on the 13th floor (sterling national bank) as per plans. no change to use egress or occupancy
Valuation:
$14,385
Permit #:
123456312-02-EW-MH
Status:
issued
Fee:
$349
Permit Type:
N/A
Building Type:
O6-office buildings
Mechanical systems
1978 Williamsbridge Rd, Bronx, NY, 10461
2021-06-29
Hereby filing for the installation of mechanical equipment. no change to use egress or occupancy
Valuation:
$20,000
Permit #:
X00379377-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
46-1 Queens Blvd, Sunnyside, NY, 11104
2021-06-29
General modification to the existing office and related finishes
Valuation:
$20,000
Permit #:
Q00536997-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
A2 - alteration type 2
487-5 Avenue, New York, NY, 10017
2018-02-05
Alteration type 2 - structural new steel support for movable wall as shown on drawings. no change to use egress or occupancy
Valuation:
$6,000
Permit #:
123153728-03-EW-OT
Status:
issued
Fee:
$275
Permit Type:
N/A
Building Type:
O4-office buildings