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About
Mainstream Construction is a multi-licensed Florida contractor based in Tavernier, Monroe County, in the Florida Keys. The company is owned by Sergio Rubio and holds certifications as a Florida Certified Roofing Contractor (CCC1327706), Certified General Contractor (CGC1508763), and Certified Mechanical Contractor (CMC1249838), enabling it to deliver a wide scope of construction services. The company has been active since approximately 1998 and has completed more than 270 permitted projects across the Florida Keys and South Florida, including Monroe County residential builds, docks, pools, additions, and commercial mechanical work. Mainstream Construction is registered with Monroe County as a General Contractor. The company serves the Florida Keys, Monroe County, and has worked in Miami-Dade County.
Highlights
Triple-licensed: Certified Roofing, General Contractor, and Mechanical Contractor
270+ permitted projects across Florida Keys and South Florida
Registered with Monroe County
Over 25 years in the Florida Keys construction market
Earned from Mainstream Construction's verified Florida license, live Google rating, and standing in Tavernier. Every badge links back to this profile so anyone can confirm it, and it updates automatically if the underlying status changes.
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Frequently asked
What types of projects does Mainstream Construction handle?
Mainstream Construction holds licenses as a Certified Roofing Contractor, Certified General Contractor, and Certified Mechanical Contractor, allowing the company to handle roofing, general construction, new home builds, remodels, additions, mechanical systems, pools, and dock work.
Where is Mainstream Construction based and what areas does it serve?
Mainstream Construction is based in Tavernier, Florida, and primarily serves Monroe County and the Florida Keys, with project history also in Miami-Dade County and South Florida.
Is Mainstream Construction licensed and insured in Florida?
Yes. Mainstream Construction holds active Florida state licenses: Certified Roofing Contractor CCC1327706, Certified General Contractor CGC1508763, and Certified Mechanical Contractor CMC1249838, all verified active as of July 2025.
Who owns Mainstream Construction?
Mainstream Construction is owned and operated by Sergio Rubio, who is the qualifying contractor for all state license categories.
How long has Mainstream Construction been operating?
Mainstream Construction has been in business since approximately 1998, accumulating more than 270 permitted projects across the Florida Keys and South Florida.
Does Mainstream Construction build new homes in the Florida Keys?
Yes. Mainstream Construction's portfolio includes new single-family residential construction in the Florida Keys, including waterfront and elevated hurricane-resistant homes in Tavernier, Key Largo, and Marathon.
Can Mainstream Construction handle roofing work in Monroe County?
Yes. Mainstream Construction holds Florida Certified Roofing Contractor license CCC1327706, and is registered with Monroe County, allowing it to pull roofing permits and perform roofing work throughout the Keys.
Does Mainstream Construction do mechanical and HVAC work?
Yes. Mainstream Construction holds Certified Mechanical Contractor license CMC1249838, which covers HVAC and mechanical systems installation and repair.
Does Mainstream Construction work on pools and docks?
Yes. Permit records show the company has completed pool and spa projects and dock work in the Florida Keys and surrounding areas.
How do I contact Mainstream Construction to request a quote?
Mainstream Construction does not currently have a public website. To inquire about a project or request a quote, call (561) 670-7684 directly.
