COR Improvements
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COR Improvements
We exist to create outstanding relationships where ingenuity and collaboration come together. By implementing a culture that supports exceptional service, we are committed to bettering our industry with superior communication between our customers, team members and community while inspiring others to do the same.

COR Improvements is a woman-owned, minority-owned, general contracting business specializing in kitchen and bathroom remodeling, while offering a variety of other quality construction services in and around Milwaukee and Southeastern Wisconsin. Owner Maretes Hein founded the company in 2007 under the name My Girl Tuesday, offering smaller, handy-person type services.
Services
As one of Southeastern Wisconsin's most trusted general contractors, our work in bathroom, kitchen, whole home, expansions, and exterior remodeling helps take your home and truly make it yours. Regardless of your project type or size, we will construct a plan, design, and execute with amazing results.
We will turn your dream interior ideas into a reality with our experience and expertise. With careful planning and budgeting along with the best craftsmen and contractors in Southeastern Wisconsin and Milwaukee. Your interior remodeling project, whether bathroom or kitchen, can be painless and enjoyable.
On average, a midrange major kitchen remodel will bring 59% return on investment, according to Zillow.com. We hear it all the time, "Remodeling my kitchen was the best decision I've made for my family!" Whether it's family dinners, friends coming over for a Packer game, or baking holiday treats, the kitchen truly is the heart of the home and the gathering place for something special.
Your bathroom is truly one of the most used, yet also most overlooked rooms in your home! Traditionally, bathrooms are built with efficiency in mind, but aesthetics may be overlooked. We're here to tell you that you can have both. Are you sick of starting your day in a dated bathroom, struggling to control moisture in your home or argue over the lack of storage space?
A smart, effective solution if you need more space, but don't want to move, the National Association of Realtors estimate a 53% rate of return on Attic Renovations. Here in the Milwaukee area, there are a lot of homes with unfinished and unused attic space. As your needs for added bedroom, home office, media space or a kid, man or woman cave arise, the attic is a great option to expand your living area.
Reviews (6)
Shane & Andrea Fell
Shane & Andrea Fell
Oct 13, 2021
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We recently worked with COR Improvements on an addition to our home in Wauwatosa. We couldn't be happier with the results and the experience! Our project was a bit complicated — it involved building a new garage with a second-floor master suite above and connecting it to our existing 1920 home. COR managed the process with expertise and creativity. We've received numerous compliments from our neighbors regarding how the addition blends perfectly with our existing home and "looks like it was always there." Throughout the project, the COR team was thoughtful and professional. Their communication
Brett Jury
Brett Jury
Oct 05, 2021
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COR Improvements was great to work with from beginning to end on our kitchen remodel. They listened to what we wanted and worked with us to create a design at a manageable budget for us. The project included a complete kitchen remodel and new flooring and trim throughout main living space. They were professional, responsive, on time and within budget…not sure what else you could ask for.
Emil Hurst
Emil Hurst
Apr 05, 2021
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Still waiting. Problem "acknowledged" but nothing has changed since photos below. I am spending money to go through a tedious legal process two months after the leak that COR caused was discovered. Our living room ceiling under the MB looked like this 3 weeks after master bath and kitchen remodel finally "finished", and almost one year after the start date. Flaw in the shower construction and hole in ceiling not fixed yet.
Contractor made a hole in the ceiling to try to find the leak and now trying to get me to sign a waiver to release obligation for further claims BEFORE THEY REPAIR THE HOLE
Melanie Gilmore
Melanie Gilmore
Apr 04, 2021
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Maretes was incredible from day one with our kitchen and guest bathroom remodel. We did a full kitchen remodel and almost a full bathroom (we left the existing floors). She listened to what was important to us as the client and used that information to draw up her plans. In less than 2 months, we were able to see her vision come to life with a kitchen more beautiful than we could have imagined and a modern, stunning bathroom. Maretes was at our house every day in that time to check on progress and to communicate every step of the process. I'm so thankful for Maretes and COR Improvements. They really
K. Mayer
K. Mayer
Apr 03, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
Absolutely outstanding experience! We did a kitchen remodel. We removed a wall to do an open concept to make our small home look and feel larger. We LOVE our space! COR Improvements went above and beyond to meet our expectations and make sure we were satisfied every step of the way. I would highly recommend this company!
Services: Flooring, Painting, Install drywall, Remodeling
Kayleigh R.
Kayleigh R.
Sep 04, 2020
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I heard nothing but wonderful things about Maretes and her company. I was really impressed with her communication and the work she produced that I decided to hire her to build my salon suites at Good Hair Day MKE. I started working with her back in mid December 2014-March 2015. It was a MAJOR renovation job, 2000 sq ft, 9 suites, manicure/pedicure area, bathroom, and waiting area, all built from scratch. Custom build cabinetry/countertop with shampoo bowls installed in each suite, new flooring, electrical, plumbing, HVAC system, fire sprinklers, painting, putting together equipments, etc.  It