southeast minnesota's choice for custom decks & interior remodels
Re-imagine your outdoor living space.
At Deckology and Unnasch Construction, we are your trusted partner in crafting stunning, low maintenance decks and outdoor spaces, installing skylights that fill your home with natural light, and delivering high-quality interior remodels that seamlessly blend functionality and style. We're here to turn your Pinterest board into reality.
WHY DECKOLOGY
WE ARE THE LEADING DECK BUILDER IN THE ROCHESTER AREA PROVIDING EXCEPTIONAL OUTDOOR DECK SOLUTIONS.
Our dedicated team utilizes the latest trends, high quality materials, and a personalized approach to transform your backyard in to the ultimate sanctuary.
Our customized approach ensures every deck is masterpiece of form, function, and longevity.
Our collaborative design process involves detailed discussions about your aesthetic preferences, lifestyle needs, and property characteristics.
We are proud to offer a wide range of materials from classic cedar to composite materials to meet your needs, climate, and budget.
TRANSFORM YOUR EXTERIORS INTO A SPACE THAT'S STUNNING AND PRACTICAL.
Whether you're adding a deck or pergola or completely renovating your outdoor space, our goal is always to provide a positive, seamless renovation project.
We put our years of custom design and home construction to use to help your re-imagine your outdoor living space.
Our experience allows us to offer customized solutions best suited for your home's unique architecture and your lifestyle needs.
With Deckology, you'll experience high quality craftsmanship and innovative results.
MEET YOUR CONTRACTOR.
Marc Unnasch started Unnasch Construction, his first business, in 2010 with a commitment to quality craftsmanship and customer satisfaction. Offering everything from roofing, skylights, interior remodeling and home improvement projects, Marc ensures every project meets the highest standards of longevity and design.
In 2022, he launched Deckology to fulfill a need and passion to enhance outdoor living spaces in Southeast Minnesota. This side of his business provides custom decks, railing, covered and screen porches, patios and pergolas. Every space is intentionally designed using the highest quality materials to ensure low maintenance, lasting outdoor retreats for his customers. He takes pride in running a small, highly skilled crew and is always on-site to personally oversee each project, ensuring attention to detail, seamless execution, and a superior customer experience from start to finish. When Marc isn’t working, he’s most likely on an adventure rock or ice climbing somewhere.
discover the art
of outdoor living.
From custom decks and pergola additions, to seasonal porches and patios, to interior remodels and skylight installations, let us help you elevate your outdoor living space and transform your home.
Please fill out our form and we will give you a call to discuss your project. In the meantime, learn more about what it's like to work with us below.
We hired Marc to replace the railings on our deck and are very happy with the results. He was easy to communicate with, showed up when he said he would, and completed the work on schedule. It's clear that Marc takes pride in his craft as he was precise and exacting in all aspects of the project. Definitely would recommend him.
- Scott
Marc did a great job redoing our deck! He was easy to communicate with and we appreciated the progress updates throughout the process. We also appreciated the time he spent with us deciding on deck material and size. During the project, Marc discovered we had wood rot from the original deck not being done properly and he was able to take care of this problem efficiently and effectively. I would highly recommend hiring Marc for your next project!
- Ashlen
Marc is very knowledgeable in his line of work. His attention to detail is unlike anything I have ever seen. I highly recommend if you want your projects done right.
- Diana
Marc was great to work with. He was very knowledgeable and responded quickly. Customer service was excellent and he exceeded expectations. The pergola he installed looks GREAT!
- Elizabeth
A perfectionist. Looks beautiful, and our deck will outlast our house!
- CJ
Marc did a fantastic job on our new deck. His attention to detail is amazing. He brought up things that I didn't even consider. If you like things done the right way go with Deckology.
- Kevin
Fantastic job, Marc! Your attention to detail and commitment to excellence are truly inspiring. Looking forward to the warm weather to kick-start phase two!
- Rachel
Unnasch Construction offers interior remodels, skylight and sun tunnel installation and more. Deckology specializes in transforming your outdoor living space through custom decks, patios, porches and accessories. Based in Mantorville, Minnesota, they serve the entire southeast region of Minnesota.
© 2025 Unnasch Construction | Deckology, All Rights Reserved. A Sav Creative Site.
MARC UNNASCH
MN License #BC740061