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Imagine transforming your bathroom into a personal sanctuary—whether it’s a modern, luxurious space or a refreshed, updated look that reflects your style.
If you’re worried about the hassle and uncertainty often associated with remodeling, SEI Construction Inc. is here to help.
With nearly 40 years of experience in Westfield, NJ, and the surrounding areas, we’ll make your dream bathroom a reality while avoiding the common pitfalls like surprise costs or dealing with multiple contractors.
Comprehensive Bathroom Design & Remodeling Services
At SEI Construction Inc., we combine design expertise with skilled craftsmanship to deliver bathrooms that are as functional as they are beautiful.
Whether you’re envisioning a spa-like primary bath, a stylish powder room, or a practical basement bathroom, we tailor every design to your home, lifestyle, and budget.
If you have a concept in mind but aren’t sure how to move forward, our team will help refine your vision with expert guidance every step of the way. We begin with an in-person consultation to understand your goals, take precise measurements, and discuss layout possibilities. From there, we create a detailed 3D rendering—similar to what you see on today’s top home renovation shows—so you can visualize your new bathroom before construction begins.
Next, we guide you through material selections, including cabinetry, countertops, flooring, tile, and lighting that align with your preferred aesthetic—whether modern, transitional, farmhouse, or custom. Our design-build approach ensures every choice balances beauty, function, and long-term value.
From the first consultation to the final reveal, SEI Construction makes the remodeling process seamless, transparent, and enjoyable—resulting in a bathroom that enhances both your home and your everyday living experience.
Westfield NJ's Leading Bathroom Design Company
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Primary Bathroom Remodels
— Designed for Comfort, Crafted for Luxury
Your primary bathroom should feel like a daily retreat — elegant, restorative, and designed for you. At SEI Construction Inc., we transform standard spaces into spa-like sanctuaries complete with custom walk-in showers, freestanding tubs, heated floors, and smart features that bring luxury into your everyday routine.
From the initial design to the finishing details, we create a balance of beauty, function, and relaxation tailored to your lifestyle.
Ready to reimagine your primary bathroom? Schedule a design consultation and let’s create your oasis.
Bathroom Renovations
— Modern Upgrades, Timeless Results
A bathroom renovation can completely change how your space feels and functions. Whether your goal is to refresh outdated finishes, improve layout efficiency, or upgrade to modern fixtures, SEI Construction Inc. makes the process seamless from start to finish.
Our experienced designers help you select durable materials, elegant tilework, and energy-efficient features that fit both your budget and your vision. We focus on every detail — from reimagining lighting and ventilation to optimizing storage and accessibility — ensuring your renovated bathroom adds beauty, comfort, and long-term value to your Westfield home.
Kids’ Bathroom Remodels & Renovations
— Functional, Durable, and Fun by Design
We create kids’ bathrooms that evolve with your family — playful and practical today, yet designed to transition effortlessly as your children get older. Our approach focuses on flexibility: adjustable or removable features like built-in step drawers, lower vanities that can be easily updated, and open shelving that can later be styled for teens or guests.
Bright, durable materials and non-slip flooring make the space safe and easy to maintain, while timeless tile choices ensure the room ages gracefully. With thoughtful design and quality craftsmanship, your kids’ bathroom will stay functional, stylish, and adaptable for years to come.
Powder Room Renovations/Additions
— Small Spaces with Big Design Impact
Powder rooms offer the perfect opportunity to make a statement.
Whether it’s a striking vanity, bold wallpaper, or elegant lighting, our team knows how to transform a small footprint into a showcase of style.
We balance high-end design with everyday usability, creating spaces that leave a lasting impression on guests.
Basement Bathroom Remodels/Renovations/Additions
— Built for Comfort and Durability
A basement bathroom adds instant convenience and increases your home’s functionality.
Our designs focus on efficiency, moisture protection, and modern finishes that make basement spaces feel bright and inviting.
From waterproof materials to proper ventilation, we handle every detail to ensure comfort and long-term performance.
Above-Garage Bathroom Renovations/Additions
— for Guest Suites and Bonus Spaces
Add comfort and convenience to your above-garage suite with a thoughtfully designed bathroom. We specialize in creating space-efficient layouts that feel open, comfortable, and cohesive — complete with modern tilework, sleek vanities, and energy-efficient fixtures.
Every design is customized for practicality and visual appeal, perfect for guests or extended family.
Bathroom Additions
— Expanding Comfort, Enhancing Value
Adding a bathroom to your home is one of the smartest upgrades you can make. Whether you’re expanding your primary suite or adding a guest bath, SEI Construction ensures your new space feels like it’s always belonged.
We handle everything — from design and permits to plumbing and finishes — for a seamless addition that complements your home.
Why Choose SEI Construction Inc. for Your Bathroom Remodel?
We understand that bathroom renovations can be overwhelming, with countless decisions to make along the way. At SEI Construction Inc., we’ve fine-tuned our process to help guide you at every step, making your renovation as stress-free as possible:
- Expert Guidance Every Step of the Way:
Our team of professionals—including designers, subcontractors, and suppliers—will collaborate closely with you. We listen to your needs and offer expert advice on the latest trends and product options, ensuring the final result aligns with your vision. - Customer-Centered Approach:
From initial planning to project completion, we prioritize communication and transparency. Our focus on top-notch customer service has earned us an A+ rating with the Better Business Bureau, and we continue to uphold that standard with each project. - Budget-Conscious Planning:
We believe that careful planning is the key to a successful renovation. That’s why we meticulously review your options to ensure the project stays within budget, delivering results efficiently without sacrificing quality.
See the Proof:
Westfield, NJ Bathrooms Transformed by SEI Construction
Rated 5 Stars for Bathroom Remodeling in Westfield, NJ
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!
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Westfield, NJ, Remodeling Services
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Meet Us
110 Myrtle Avenue, Westfield, NJ 07090
Call Us
+1 (908) 789-9151
Business Hours
Monday – Friday 8:00AM – 4:30 PM