Mark D. Olejniczak Realty, Inc.
Mark D. Olejniczak Realty is a full-service Northeast Wisconsin real estate company established in 1980.
Our local Realtors and staff are dedicated to providing buyers and sellers with high quality, professional customer service from start to finish. Put our success to work for you!
Featured Listings
Browse Homes For Sale in Northeast Wisconsin
Just Listed!
15 Time Award Winner – Best of The Bay: Best Real Estate Agency in Green Bay, Wisconsin!
Our Realtors©
A Realtor© is available at our office 5 days a week, 8 am – 5 pm, and on-call during nights and weekends to answer any question you may have about real estate.
Complimentary Comparative Market Analysis
Do you know the value of your real estate? Request a complimentary Comparative Market Analysis to help you determine what your home or property could be worth in today’s market.
Free Market Report
Before making any real estate transaction, it’s important to gain insight into the current market. Our free market reports page offers comprehensive data for any zip code or city in Northeast Wisconsin.
Open Houses
View All Open Houses in Northeast Wisconsin.
Open houses hosted by Mark. D. Olejniczak Realty, Inc. are listed every Thursday at 2 pm.
Open houses are updated as they are confirmed. Please check back regularly.
Can’t make it to the open house?
Contact us for a private showing.
Preparing to sell your house? Use Our Home Selling Checklist!
Show your home at it’s best! Organize the preparation process with our easy-to-use home selling checklist – Home Selling Checklist PDF
Condominiums
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 walking trails, barrier-free features, pool areas, and indoor parking.
Commercial Real Estate
Whether you’re looking for retail, investment, or office property, 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.
Vacant Land
Find vacant residential lots, commercial lots, waterfront land, and agricultural land in Northeast Wisconsin.
Northeast Wisconsin Waterfront Homes
Browse a wide selection of waterfront homes on Green Bay, lake homes, and river residences. We would be happy to help you find your perfect Northeast Wisconsin getaway!
A Realtor© is available at our office 5 days a week, 8 am – 5 pm, and on-call during nights and weekends to answer any question you may have about real estate.
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Mark D. Olejniczak Realty, Inc.
375 W. St. Joseph St.
Green Bay, WI 54301