Built on integrity,
driven by craft
Founded by John Marzulli in 1985 and now guided by Co-Owners Mike Maples and Diane Moronio — carrying forward four decades of craftsmanship, integrity, and the promise that we don't leave until you love it.
Tampa Bay's Most Trusted Remodeler
John Marzulli began his journey in homebuilding in 1970, working alongside his brother to build quality homes across the Tampa Bay area. In 1985, he founded Emerald Contractors — a name that became synonymous with craftsmanship, integrity, and lasting relationships across Tampa Bay.
It is with deep sadness that we share the news of John's sudden and unexpected passing. He was not just the founder of this company — he was its heart and soul, a craftsman's craftsman who genuinely loved every client and every project he touched. His loss has been felt profoundly by our entire team and the communities he served for over four decades.
In his honor, and in keeping with the values he instilled in every person on this team, Emerald Contractors continues under the dedicated leadership of Mike Maples (Co-Owner, Field Operations) and Diane Moronio (Co-Owner, Office Operations) — the same people John trusted to uphold his standards every single day.
With over 41 years in the building and remodeling industry, John brings unmatched expertise and a personal touch to every project. He holds five of the most prestigious certifications in the remodeling industry.
John's philosophy is simple: treat every client's home as if it were his own. That commitment is why Emerald Contractors has earned the loyalty of thousands of Tampa Bay homeowners.
"Treat every client's home as if it were your own. No shortcuts. No compromises. Just results that last."
Industry Certifications
Our Journey
Company Profile
Service area
We serve Tarpon Springs, Palm Harbor, Clearwater, St. Petersburg, Tampa, Dunedin, Safety Harbor, Land O' Lakes, Wesley Chapel, and surrounding communities throughout Tampa Bay.
Family-owned & operated
Emerald Contractors has been family-owned and operated since 1985. That means every project gets personal attention — from the first consultation to the final walkthrough.
NARI membership
Active members of the National Association of the Remodeling Industry (NARI) Tampa Bay Area Chapter, held to the highest standards of professionalism, ethics, and craftsmanship.
Who we serve
Homeowners throughout Pinellas, Hillsborough, and Pasco counties — as well as VA and non-profit organizations seeking quality accessible design and home modifications.
Certifications & Honors
In nearly 45 years of building quality homes, luxury condominiums, and commercial projects in Tampa Bay, Emerald Contractors has received numerous certifications and honors.
