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Location and Projects

Address
900 S 2ND ST, Ronkonkoma, NY, 11779
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M Daddio Construction

M Daddio Inc, 900 S 2nd St, Ronkonkoma, NY (Owned by: Michael S Daddio) holds a Home Improvement Contractor license and 5 other licenses according to the New York license board.

Their BuildZoom score of 108 ranks in the top 5% of 77,888 New York licensed contractors.

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

M Daddio Inc Contact Information

Phone: (631) 513-9143 Edit
Address: 900 S 2ND ST, Ronkonkoma, NY 11779 Edit

M Daddio Inc Ronkonkoma

Quality

108
95th percentile
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
M Daddio Inc has a BuildZoom score of 108, which places them above 95% of 77,888 contractors in New York.

Activity

9 projects
2025
8 projects
2024
6 projects
2023
Our building permit records indicate that M Daddio Inc has worked on at least 23.0 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

4 projects
Kitchen remodels
Analyzing permits over the last 4 years shows that M Daddio Inc mostly works on kitchen remodel projects.

Pricing

1 project
$5k-$20k
4 projects
$20k-$50k
4 projects
$50k-$100k
8 projects
$100k-$250k
5 projects
$250k-$500k
1 project
$500k-$1mil
1 project
$1mil+
Value Not Public: 2.0 projects
The typical size of their permits is approximately $137,298. 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.

M Daddio Inc Reviews
3 out of 5 stars, based on 2 reviews

  • By Sam G.
    February 1, 2025
    Home renovation

    M. Daddio did my home renovation and I could not be happier. They truly go above and beyond.

  • By Julie
    September 24, 2023

    I am writing this complaint to draw attention to both the low quality of work and the horrendous customer service I experienced with M. Daddio Builders.

    I had a roof leak in 2021 that was fixed quickly and efficiently by Chandelle Roofing company. Upon discovering a new leak this year, I reached out to them again. They contracted the work out to M. Daddio. I was suspicious, but being a generally trusting person, I went with it. I did express concerns over the cost structure sent to me by M. Daddio (see attached contract), and nobody responded to my email. Again, I was too trusting, and despite my anxiety over who would be sent to my house and the estimated cost for repair (which nobody gave me, despite the contract referring to an estimate), I trusted that it would be similar cost and quality to the original repair.

    I was wrong. Not only was the cost more than double what the original leak cost to fix, the leak was not fixed. What had been a very slow leak got significantly worse in a short span of time.
    When I reached out to M. Daddio to ask how they could help me, they replied that they would return to fix the leak at the same hourly rate as the previous failed repair. I understand that there is no guarantee when it comes to roof leaks and that they can be tricky to fix. However, the fact that the leak was made worse, and then M. Daddio was not willing to decrease the rates in the slightest to fix what they had made worse, begs the question: did they intentionally fail to fix the leak, hoping a young, single female would fall for it and end up paying them twice?

    I understand that I am partially at fault here. I should have refused to allow anyone to do work on my house until someone replied to my email with an estimate, and I should have trusted my gut when it seemed questionable that a company other than Chandelle Roofing was coming to fix my roof. However, I am a generally trusting person, and didn’t want to bother anyone. Now I feel I have been taken advantage of and ripped off.

    Despite the high cost for low quality work, my biggest disappointment was how I was treated by Mike Daddio when I called to calmly voice my concerns. I was interested in having a dialogue and perhaps reaching a compromise. While I felt that M. Daddio Builders could and should come back to fix the leak for free, I understand that they would not want to do that and I was more than willing to compromise. However, before I could even finish a sentence expressing my thoughts, Mike Daddio rudely interrupted me by talking over me and would not allow me to finish a sentence. Then, despite me requesting that he simply hear me out and then I would be happy to hear his viewpoint, he called me unreasonable, hung up on me, and then refused to respond to my phone calls and emails. When I finally got a reply after over a week and multiple attempts to reach Mike, he offered me a measly $500 credit and tried to cover himself by saying that his company had recommended a new roof, and I had opted to fix the leak. I asked Mike to find written proof of his claim, and he was unable. Nobody at M. Daddio builders had even mentioned the possibility of a new roof, let alone recommended it. The fact that Mike attempted to lie to me in order to escape responsibility, after already having treated me disrespectfully, is just poor business practice.

    I found Mike Daddio to be incredibly unprofessional. He is clearly more interested in making money than he is ensuring the quality of his company’s work, and he has no concern for the needs and concerns of his clients.

    Read more
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Building Permits by M Daddio Inc

Sort by: Notable Notable | Date Date | Job Value Job Value
General construction
2025-06-09
Filing interior renovations at apartment #phc with minor partitions doors lighting and finishes as per plans. no change in use egress or occupancy under this application. plumbing to be filed as a subsequent #m01232228-s1
Valuation:
$175,000
Permit #:
M01232228-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2024-01-20
Moderate selective interior work remove & install interior partitions gwb floor finishes new kit cabinets tilework cosmetic finishes exterior work; replace windows rear yd deck reduce exist 5 family house to a one family dwelling
Valuation:
$716,000
Permit #:
B00753553-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2025-02-04
Renovation of an existing two family dwelling. work to include non-structural demolition and general construction as per plan filed herewith. no change to use egress or occupancy
Valuation:
$298,000
Permit #:
B01150178-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2024-09-18
Minor demolition and general construction for the combination of apartments 17ew and 17fw as well as the redimising of apartment 17cw as per plans filed herewith. no change to use egress or occupancy
Valuation:
$390,000
Permit #:
M00966592-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2024-02-27
Renovate existing 2-family dwelling including partitions & cosmetic finishes as per plans filed herewith. ms pl & st worktypes filed separately through dobnow. no change to egress use or occupancy
Valuation:
$374,448
Permit #:
B00685969-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2024-10-26
Combination and renovation of exist apartment. 4c (on the and floor) and exist apartment 2/4ab (on the cellar basement & first floors) into one apartment. no change to use egress or occupancy is proposed under this application
Valuation:
$223,500
Permit #:
M00879024-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
2025-02-05
This application is filed for mechanical work in conjunction with the interior renovation as per plans herewith. no change in use egress oroccupancy
Valuation:
$200,000
Permit #:
M00765067-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2022-12-12
Change of use to base 1 2 floors to remove a stair and new stair and new windows as per plans.structural mechanical and plumbing applications filed seperatelty
Valuation:
$1,310,370
Permit #:
M00536871-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2025-03-12
Filing for interior renovation of 2nd floor apartment 2n as per plans submitted herewith
Valuation:
$500,000
Permit #:
M01187109-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2022-12-12
Complete renovation of existing three story building with cellar. new horizontal extension at rear. change use from two family to one family dwelling
Valuation:
$974,578
Permit #:
B00499182-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2024-07-18
Alterations of apartment phm as per plans. remove non-bearing interior partitions. new kitchen cabinets and appliances. new master bathroom fixtures and fittings. new waterproofing and tiling. no change to occupancy use egress or bulk
Valuation:
$102,320
Permit #:
M00802422-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
2024-09-20
Installation of new air conditioning and ventilation system and replacement of radiators in conjunction with renovation of existing apartment in a multi-family co-op. no change in use egress or occupancy
Valuation:
$150,000
Permit #:
M00969344-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2025-02-05
No change in use egress or occupancy. interior renovations of unit 16de. new interior partitions and finishes
Valuation:
$320,000
Permit #:
M00975343-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Re-framing of floor joists for enlarged openings on multiple floors joist reinforcement and opening enlargements in the rear masonry wall. no change to occupancy. refer to architectural & mep plans for zoning egress energy analysis etc
Valuation:
$42,575
Permit #:
B00701382-I1-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2024-12-16
Interior renovation of an existing class a apartment including new flooring cabinetry fixtures doors dropped ceiling and partitions as per plans filed herewith. no change in use egress or occupancy
Valuation:
$140,000
Permit #:
M01078173-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2025-01-02
Subsequent application for structural work misc framing work throughout cellar concrete bench footing in cellar footings in rear yard for deck
Valuation:
$95,900
Permit #:
B00753553-S4-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2024-07-18
Interior renovation of existing lobby including plaster and stone finish removal. no change in use egress and occupancy under this application
Valuation:
$1,500,000
Permit #:
M00771621-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
2021-12-12
Mechanical work at 12th floor and roof filed in conjunction with the renovation of apartment #12.main application filed under separate bis application. no change of use occupancy or egress
Valuation:
$75,000
Permit #:
M00275021-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2023-12-12
Combination of apartment. create opening in slab between levels and addition a conveniencestair. remove/relocate non structural partitions on both levels. no change in use egress or occupancy
Valuation:
$349,992
Permit #:
M00762536-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
2024-02-05
Nterior renovation of apartment 1518 including general construction - renovation of existing kitchen renovation of existing bathroom new finishes. no change to use egress or occupancy under this application
Valuation:
$134,596
Permit #:
M08044107-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A

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