Get a Free Basement Consultation & Project Quote

Trusted Local Experts with nearly 40 Years of Experience
At SEI Construction Inc., we believe your home should evolve with your lifestyle. For more than three decades, we’ve helped homeowners in Fanwood, NJ transform their basements into vibrant, functional, and lasting extensions of their living space.
Whether you’re envisioning a family retreat, a guest suite, or a luxury home theater, our award-winning team brings expert craftsmanship, innovative design, and proven processes to every basement remodeling project.
Types of Basement Projects We Specialize In
Why Homeowners in Fanwood, NJ Trust SEI Construction Inc.
Established Basement Contractor
Nearly 40 years of hands-on remodeling experience
Locally Rooted, Highly Rated
5-star client reviews and referrals from Fanwood residents
Licensed, Insured & Vetted Pros
Fully compliant with NJ building codes and safety standards
Design-Build Approach
Streamlined process with architectural, design, and construction experts
Transparency from Start to Finish
Clear timelines, clean worksites, and dedicated project management
When you choose SEI Construction Inc., you’re not just hiring a contractor — you’re partnering with a reputable team committed to integrity, quality, and your complete satisfaction.
Discover the Possibilities: What We Can Do With Your Basement
Custom Basement Design & Planning
Our design team collaborates with you to develop a tailored blueprint that maximizes your basement’s potential. We align your goals with budget and building feasibility, ensuring smart, stylish, and lasting results.
Complete Basement Finishing
From drywall, flooring, and ceiling installations to trim and paint, we finish basements with precision and polish — creating spaces that feel just as inviting as the rest of your home.
Basement Waterproofing & Moisture Control
Protect your investment with professional-grade waterproofing. We install sump pumps, seal cracks, and implement drainage systems to keep your basement dry, healthy, and mold-free.
Basement Electrical & Plumbing Integration
We handle all necessary installations to bring your basement to life — including outlets, lighting, water lines, and fixtures — up to code and done right the first time.
Do Basement Renovations Add Value?
Absolutely! Remodeling your basement is hands down one of the smartest home investments you can make.
Here’s why:
First, it’s a great way to boost your home’s value. A finished basement often offers one of the highest returns on investment—especially when it’s done by a pro. It can attract more buyers and even bump up your asking price if you ever decide to sell.
Second, it’s all about the extra space. Finishing your basement basically gives you a whole new floor of usable square footage, without having to expand your home’s footprint. It’s a game-changer for growing families, multi-generational households, or anyone who just needs a little more room to spread out.
On top of that, a well-finished basement can actually help with energy efficiency. When you insulate and seal the space properly, it helps regulate your indoor temperatures and can save you some money on those energy bills.
And finally—let’s be honest—it just makes your home look better. A clean, modern basement makes the whole house feel more updated and polished, from top to bottom. It’s one of those upgrades that checks all the boxes!
Our Basement Remodeling Process
Personalized Consultation
We listen to your goals, walk through the space, and discuss options that align with your budget.
Thoughtful Design & Planning
Including architectural drawings, 3D renderings, and material selections so you know exactly what to expect.
Permits & Compliance
We handle all local permits and ensure your remodel is 100% up to code.
Construction & Craftsmanship
Our team gets to work with care, skill, and respect for your home.
Final Walkthrough & Satisfaction Guarantee
Your project isn’t done until you’re happy. We stand by our work—just ask our clients.
People Say the Nicest Things
Jessica Friedman I'm an interior designer in the area. I've used Mike and his team on countless projects over the past 10 years. We just completed another a few weeks ago. His team is always wonderful, trustworthy and meticulous. I throughly enjoy working with them and look forward to future projects. I can't believe I haven't written a review sooner! Victor Cenci 2 years ago, SEI redid our outside deck, remodeled a downstairs bathroom and installed composite railing in the front of our house. The team was professional, courteous and responsive, and the fit / finish was excellent. Just this month, I called them back to replace a broken cap on the composite railing (winter weather casualty) and to screw down some deck boards that were in danger of coming up. The team came back and did the work at no charge and found more missing / broken screws than I did. Very pleased with their response and happy to recommend a local, quality contractor. Aaron Baker SEI construction added a net-new master suite, remodeled 1 full bath, created a net-new full bath in the basement, and redid all HVAC duct work, roofing, and siding. Our contractor selection criteria was quality and project management. We needed good communication and a central point of contact for questions, and SEI checked those boxes at a very reasonable price. The owner Mike Rizzo was a great communicator and very relatable. He always made technical topics Easy to understand. He’s got young kids and was great to our kids. Always patient and accommodating. Our project lead was Tyler. He was friendly, funny, and an expert carpenter. There was quality and precision in everything he built. He was really nice to my 6 and 8 daughters every day and even got my youngest a birthday present. So thoughtful! He also let me bang a few nails so I felt part of the build process. I’m thrilled with the work they did. Very content with the price we paid, and so grateful for their attention to every detail, which makes all the difference in the world. I would recommend SEI to anyone looking to remodel or add new space. Laura Kast SEI is the best! Smart, thoughtful, fast and great quality work! We've used other contractors before and SEI is far and away better than anyone else we've worked with. Great attention to detail. I can't recommend them enough! Jeff Thompson We hired SEI through a friends referral for a bathroom remodel. They are our number one recommendation for a few reasons: 1) attention to detail, 2) friendliness and trust of crew, and 3) responsiveness. They truly want the end result to be great and you can always trust who they will bring in your home. After our initial bathroom remodel, they did our deck, and are going to help on a commercial venture. I can't recommend them enough. Linda H We cannot recommend SEI Construction more highly. As serial renovators, my husband and I have worked with many contractors and the quality of craft, attention to detail, pace, and the absolutely delightful team of employees that SEI offers is unmatched. SEI is professional and qualified in every sense of the word and we cannot be more pleased with our final results! Mike Riley We hired Mike and his team to put on an addition to our home in Clark. Although we had a smaller budget than most of Mike’s clients, Mike worked within our budget and showed he cared the same for us as the rest of his clients. Our situation was unique because my wife was 9 months pregnant when the work started. The day our daughter was born was the day the kitchen was demoed. Mike and his team did a great job doing whatever they could so the work would not affect our baby or our 4 year old son. They worked hard to keep the rest of the house clean and dust free. As in any project, there were situations that came up that had to be dealt with. Mike worked with us to come to the best resolutions possible. We highly appreciate Mike and Tyler’s craftsmanship, professionalism, trustworthiness, but most importantly their respect for our family. We would like to thank Mike, Tyler, Rudy, Oscar, Izzi, and Nick for doing great work and for caring about our family. Our home is now complete. Mike and Nicole Riley Victor Liu Mike and his team do great, quality work, and his passion and attention to detail stand out!
What Makes SEI Construction Inc. Different?
Local Reputation, Big Results
We’re not a franchise — we’re your neighbors. Our reputation in Fanwood has been built one basement at a time.
Clean Worksites & Dust Control
We respect your home. Our dust containment system protects air quality and minimizes disruption.
Collaborative Design Expertise
Whether you’ve hired your own architect or choose one of our in-house designers, your vision is always the foundation.
Fully Licensed & Insured
We’re proud to meet (and exceed) NJ construction standards — so you never have to worry about compliance or safety.

Schedule Your Free Remodeling Consultation & Project Quote
Fill out the form below to have a team member reach out about your basement remodel/finishing project.
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