Mark D. Olejniczak Realty, Inc. – “Put Our Success to Work for You”

Search for Real Estate in Northeast Wisconsin

Put Our Success to Work for You.

Since 1980, Mark D. Olejniczak Realty, Inc. has been committed to making your real estate experience a successful one. Whether buying, selling or relocating to the area, our full-time professional staff will get you the real estate results you desire. We proudly serve the entire Green Bay area as well as surrounding communities and counties.

When you buy or sell your property with us you are put in the capable hands of a high-level, experienced agency with a thorough knowledge of the Northeast Wisconsin market. Every member of our team is dedicated to meeting all the real estate needs of our customers. Ready to get started? Connect with a Realtor today. 

Featured Listings

Residential Properties in Northeast WisconsinResidential Properties

Searching for a home in Northeast Wisconsin? Our highly experienced agents have in-depth knowledge of the area’s communities, schools, neighborhoods, amenities and more. We’ll help you find the right property that fits your individual needs and budget. Considering selling your home? Our Realtors give you the knowledge and information you need to achieve your real estate goals. We use our combined years of experience and education to get you the best possible price with the least amount of hassles.

Our Waterfront ListingsWaterfront and Recreational Properties

Wisconsin is home to hundreds of miles of scenic shoreline, a bounty of beautiful lakes and many other gorgeous natural landscapes where outdoor adventurers can make lasting memories.  Whether it be pristine waterfront for boating and fishing, wooded forest areas for camping or hunting or vacant land for vacation homes or cabins, we would be happy to help you find your perfect Northeast Wisconsin getaway. Search for waterfront properties. 

Condos in Northeast WisconsinCondominiums

Condos are a great choice for buyers who want the benefits of ownership without the responsibilities of exterior upkeep like yard work and snow removal. Many newer complexes offer popular amenities such as on-site gyms, tennis courts, pool areas, and indoor parking. Interested in purchasing a condo? Browse through our condo listings. Are you a condo owner thinking about selling? Contact an agent for a free consultation on your home’s value.

Land and Lots

Are you interested in purchasing land in Northeast Wisconsin? Browse through our parcels of land including residential and commercial lots, waterfront, hunting land and acreage.

Do you have land for sale? Have a knowledgeable professional who understands the market on your side. Connect with an agent who specializes in land transactions.

Commercial Real Estate in Northeast WisconsinCommercial Real Estate

Whether you’re looking for commercial, retail, investment, or office property to buy or sell in Northeast Wisconsin, our expert real estate brokers are uniquely qualified to assist you. Our Realtors offer an in-depth understanding of financing, construction, and development costs to ensure a smooth, successful transaction. Search our featured commercial properties.


Request a Free Consumer Market Analysis

Do you know the value of your real estate? Request a FREE comparative market analysis of your property!

Real Estate Agents in Green Bay

Meet Our Realtors

Our Realtors are committed to professionalism, honesty, integrity, and extraordinary customer service. Browse our agent profiles to learn more about our team.

Local Life

Eat, play, shop, and explore what life in Northeast Wisconsin has to offer!

Construction Update

Construction Update


Getting in and out of our office parking lot may be a challenge, but our neighbors to the west of us at HME have offered their parking lot area to us.  Visitors to our office can turn into their parking lot off of Riverside, and then park up against the fenced area that is facing our office. Thank you HME Home Medical (Green Bay, WI)!


Another option is to turn into the Catholic diocese lot off of Riverside and go around their parking lot and come out around the condos at 300 W. St. Joseph and then turn into our office lot.


Carl Bowers & Sons Construction have assured us they will always keep a lane open. If you need assistance finding our office or finding somewhere to park, please call us at 920-432-1007 and we will find a way to get you here!


As part of the Allouez 2019 Street and Utility Reconstruction Projects, St Joseph St. will be under construction through the summer. Please plan accordingly.