Worry-free
Home Additions

Cover all the details and build to the highest standards.

Need more space? ISI Construction excels in home additions that seamlessly blend with your existing structure, providing the extra room you need without compromising style or functionality. Whether you are expanding your living area, adding a new bedroom, or building a sunroom, our team ensures that your addition is designed and built to the highest standards.

We take care of every detail, from planning and permits to construction and finishing, so you can enjoy your new space worry-free.

Looking for help with home additions, room additions, house expansion, custom home additions, or additional living space?

Contact ISI Construction for your estimate today.

Everything You Need for Your Home Addition Project

High Quality Results

Your custom home addition plans are executed with a high attention to detail, leaving you with a finished project that shines.

Financing Options

We offer flexible payment plans, allowing you to start your room addition or home expansion project without having to cover the entire cost upfront.

Project Transparency

Easily track progress during your home addition with our project management software, which gives you access to notes, photos, and more.

Personalized Solutions

All recommendations for your home addition design are based on your unique goals and our industry knowledge.

One-Stop Shop

You’ll have access to a broad network of highly skilled contractors for every part of your home addition project.

Hand-Picked Team

You’ll enjoy working with our team of trustworthy project managers, experience exceptional communication, and get quality results for your expansion project.

Client Reviews

  • "Gosh. Where do I begin? Tony Brown was excellent and so professional. When we moved in, it was definitely a fixer upper but we knew exactly who to call. Tony is the man and he sure does know how to handle some wood! Great guy and phenomenal work! Will be using them again in the future."

    -Matthew B.

  • "Joe and Ryan from ISI did an outstanding job installing the Evolve Stone wall in my basement. This was a time consuming project where it required custom cuts of the stone in many places. The work was done without flaws. Joe and Ryan were awesome!! I would highly recommend ISI. A+++ construction company."

    -Jeffery B.

  • "Everyone my wife and I interacted with at ISI construction was knowledgeable, helpful, and kind. They helped us figure out how to redesign the entrance to our house from the garage to create a functional mudroom area. The project manager and subcontractors were great about figuring out the best approach to flooring when the old hardwood would be hard to match, iterating on the built in design to meet our needs, and filling in the little gaps that always happen with home projects."

    -Mark P.

  • "Great Folks! Didn’t try to talk me into work I didn’t need done, in fact I was given some fixes i could try on my own. These are great, fair, and honest contractors. Tony was interested in making sure my issues was taken care of even if in meant no job for him, thanks Tony, thanks ISI for quality employees!"

    -Ed G.

  • "I absolutely love the work I had done by them. I didn't have time to do it myself. Got it done fast and on budget! Would absolutely have him back again! Great job Keith"

    -Steven R.

  • "If you have a home improvement project, I highly recommend this company. Their response time from my inquiry to scheduling was very quick. The quote was detailed and reasonable. Communication throughout the process was excellent. Each team member is knowledgeable, prompt, and polite. We are very pleased with the results and will absolutely hire them again."

    -Wendy L.

  • "ISI Construction did some warranty work on my home in Mount Vernon north,a DR Horton home,not only did they fix ALL the problems but pointed out additional issues the house inspector had missed,just an excellent experience very honest and I would highly recommend them for all your construction and home repair needs,special thanks to Joe Schrad!"

    -Larry D.

  • "Thank you isi construction for helping me figure out what best suited me to make my home the way I wanted it to be. Keith did an amazing job handling the crews and making sure everything was clean and done in a timeframe that was suitable for my work schedule. I will definitely be using them again for any projects in the future."

    -Allison S.