Addition Contractors in Mastic, NY
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Service Pros
Roofing, Framing
"They did a wonderful job, and I could not have been happier, with the work they did and how easy they were to deal with."
Evelyn P. in December 2021
"Job was performed to our satisfaction. Contractor was punctual and fair with pricing the initial project and changes along the course of the project."
F96B28548CDE7A2C7C81AEB6C20508487197143A4C17A097D3766BC7A9F56ED3 3. in September 2026
"Yes—Anthony absolutely got the job done right and efficiently. This was a complex deck project that required special permitting, coordination with an electrician, and integration with hot tub installers, and Anthony handled it with professionalism from start to finish. He went out of his way to secure a special contractor permit and was consistently communicative, proactive about potential issues, and clear about solutions. When other vendors were hesitant or negative, Anthony stayed focused and kept the project moving forward. He worked seamlessly with the electrician and hot tub team and was on site for the hot tub delivery, making the installation smooth and stress-free. The final product is beyond perfect—it’s exactly what we envisioned. High-end craftsmanship, exceptional value, and a true professional. I would recommend him without hesitation."
39BE3C726A915424C776D16C53BBBE374900551A06CE4C2BE8AECD669270222D 7. in December 2025
"DJT Development, LLC were reliable, punctual, on budget and I couldn't expect anything more from a contracting company!"
EEE4B0443FA84C537CF857968CA538BF3458D39AA9F6C657A60F7A81FB9732AB D. in July 2020
"I cannot say enough wonderful things about Keith Coco and his team! From the very beginning, they listened to my ideas, understood my vision, and then brought it to life in a way that completely exceeded my expectations. They built our gazebo and pool deck, and the craftsmanship, attention to detail, and quality of their work are absolutely incredible. What I had pictured in my mind became even more beautiful than I imagined! Keith and his team were professional, knowledgeable, hardworking, and truly took pride in every detail of the project. It’s not always easy to find a company that delivers exactly what they promise — and then goes beyond it — but they absolutely did. We couldn’t be happier with the finished result. Our backyard has been completely transformed into a space we are going to enjoy with family and friends for years to come. Thank you, Keith Coco and team, for taking my vision and turning it into something even better than I dreamed! I would recommend them without"
43A39A25338E5350C9D41F223FA69ACAADFA9C66209F9CBBD4DDAF786BEE4EEE 1. in August 2026
Roofing, Vinyl Siding
"They are very professional and knowledgeable."
Seth R. in April 2021
About us: "Dave Densing Construction, owner Dave Densing is located in East Patchogue NY and serves local Suffolk County communities. Licensed and Insured. Offering free estimates for home improvements, repairs, interior and exterior."
About us: "Im Javier Luna working for more than 20 years in the hamptons helping my clients to accomplish their home improvement projects"
In business since 1986
carpentry, tile installation, baths , and 7 more
About us: "We are a building, remodeling, home improvement firm backed with 31 yrs experience. I, Arthur DeRosa, personally over see every project, big or small, from start to finish. I have an artists soul and every project that I am privileged to do is a reflection of that. With performance backed by experience and attention to detail, your project will be in good hands. The number of employees varies depending on work load. Sub-contractors are used when necessary. Proposals and estimates are free and include payment schedules with start and completion dates. Super Service Award winner for 2016! Call us today to schedule your appointment - (631) 774-1231"
Frequently asked questions
- It’s important that you verify their license is still in good standing. Also keep in mind that certain states or provinces don’t require licensing if the job is under a certain dollar amount.
- You can find a list of your state’s licensing requirements on the HomeAdvisor website. Before you get to work with the pro, make sure their qualifications are current and acceptable to you.
- It is always a good idea to get a copy of the pro’s insurance certificate for future records, and in case anything happens. This is a good way to feel more secure in your home project, and to weed out potential scammers.
HomeAdvisor makes it easy to connect with pros near you. You can read reviews, get quotes and book appointments all in one place.
Depending on the type of project, you may find subtle differences in the hiring process. Here’s a look at task-specific advice.
You can use HomeAdvisor to help evaluate a contractor’s qualifications. We put pros through a screening process, and award badges to high-performing contractors. You can find these badges on a pro’s HomeAdvisor profile, and sometimes, his or her website.
Your research doesn’t stop here. Once you’ve found a few prospective companies, make an call to ask a few questions about work history, licensure and more:
- Have you completed a job like this before?
- Do you have a list of references I can contact?
- When are you able to start the job?
In most cases, the responses you get to these three questions will give you a very good idea of the right pro for your project. If you have more than one front-runner, these additional questions can help you narrow it down.
- How many years of experience do you have?
- What’s your permanent business address?
- Are you licensed to work in my area?
- When did you earn your business license?
- How do you handle warranty service complaints?
- Do you have worker’s compensation, property damage and personal liability insurance?
Any good contractor will answer these questions, and most will appreciate dealing with a client that takes such an active interest in finding good service. On the other hand, if a contractor gives you a hard time with these questions, you probably want to find someone else.
Related Projects in Mastic, NY
HomeAdvisor Community Rating
Mastic Addition & Remodeling Contractors are rated 5.0 out of 5 based on 38 reviews of 38 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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