How much do addition contractors typically cost?
- Farmingdale, New York Average$68,356
- Typical Range$45,000 - $68,356
- Low End - High End$3,700 - $200,000
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Service Pros
MH
Northport, NY·
Flooring, Basement Remodel, Molding Installation , and 7 more
"{No comments provided}"
Rosy S. in November 2019
Patchogue, NY·
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
Syosset, NY·
Planning & Design, Full Home Remodels, Custom Homes & Project Management , and 2 more
"We purchased a Sun Luxury Homes new construction in Hicksville in 2021. They were very accommodating, walked us through the entire process, and stood behind their work with a full warranty. Earlier this year, we called them back to finish our basement and the quality is top notch. 10/10 recommend"
AF15D689B48D168406C71868FAE7D661236333ECBEDF8ACB89616A9CBD92239B 0. in August 2025
Seaford, NY·
"The quality of the workmanship is outstanding. Every detail was handled with care, and the finished project looks fantastic. Good communication when/where to pick out titles, paint etc. Thank You!"
7C9FE2300DF704FACF1CDCB2A1E714B5FCBD830DD844A84E775DED14B8ECF173 8. in November 2025
Amityville, NY·
New Additions, Bathroom - Remodel, Kitchen Remodels , and 20 more
"I had my second floor dormer done by All Island Additions and Renovations, and they did an amazing job. The work was clean, professional, and done the right way. I?m really happy with the results and would absolutely recommend them to anyone looking to build a dormer or renovate their home. Wil was professional , explain everything clearly, and made whole process really comfortable."
3922F33BD90A81CA2A4C4CD3EA2CE91C7B7B422F116BF796FCEE306020A57561 A. in December 2025
"Extended dinning room Remodeling kitchen Remodeled 3 bathrooms, floors, windows, roofing and house siding were done very well. Everything was finished on time, and the communication was thorough throughout the entire job. The price was very reasonable and all workers were very professional. A very great experience with excellent results. Would only consider for any other project and would highly recommend to anyone else that is considering."
C1317C0A2BC6AF0A739E7D340919D9A172DCFC455AE3A2ACACA0632AE53981A5 5. in December 2025
CH
Dix Hills, NY·
Designer, Draftsperson/CADD, Architect , and 20 more
"I had my kitchen designed and completed by this company. They always worked out the details making the cabinetry and appliances fit perfectly. The floor, lighting, and granite countertops look beautiful. The construction was done in a timely manner and knowing they have fantastic designs. I would definitely have them come back to help with other projects."
ben H. in February 2023
"DJT Development, LLC were reliable, punctual, on budget and I couldn't expect anything more from a contracting company!"
EEE4B0443FA84C537CF857968CA538BF3458D39AA9F6C657A60F7A81FB9732AB D. in July 2020
Plainview, NY·
Sheetrock, Trim, Bathrooms, Finishes, Handyman Services, All Phases of Construction , and 12 more
"Eddie was great to work with! We had a limited time frame to adhere to town inspections and Eddie and his team knew exactly what we needed and quickly got the job done. The results were great and even the inspector acknowledged the impressive repair. They were able to put a knocked out garage wall back on the foundation and repair the interior dry wall. I would recommend this company for any professional contract work due to their reasonable price, ease to work with and quality of work."
DBB1701231F0CD10F1F0E68BE453054D5EADF94C2D056A9A7B9C0B430A411FCD 1. in October 2025
Showing 1-9 of 28 results
Costs for related projects in Farmingdale, NY
- Build an Addition$45,000 - $68,356
- Demo an Interior$0 - $2,000
- Remodel or Renovate a House$16,000 - $56,266
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 Farmingdale, NY
HomeAdvisor Community Rating
Overall Rating:
Farmingdale Addition & Remodeling Contractors are rated 4.8 out of 5 based on 293 reviews of 293 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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