“To anyone thinking about selling their home I would highly recommend Eugene Wisniewski of Century 21 Supreme Reality. His knowledge and expertise is second to none. From the first meeting, he put all my concerns at ease. He explained all the different aspects of selling my home and took me step by step and made it easy to understand. He truly went out of his way to make sure everything was in order to sell the house for the best price possible. I would also like to mention his nephew Steve Wisniewski, who also works at Century 21 Supreme Reality. He also went out of his way to help the process go smoothly. They both are to be commended for their time, patience & professionalism. With their expertise and guidance, the process of selling my house was a breeze. I like to thank them both for a great experience. I could not have done it without them! With sincere appreciation, Marian”
- Agent Pronto
- New Jersey
- Mountainside
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Agent Pronto analyzes transaction data, agent specialties, and client reviews to handpick the best agents in your area. Updated for December 2025. *
* Sales data is calculated based on transaction information available to Agent Pronto at the time of publishing and may not accurately reflect all transactions for a given agent.
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“Travis is the best. He loves his job.”
“I was so happy to have Shawn as my real estate agent. He did a great job, he's the best!”
“Cathleen was helpful and responsive!”
“Very professional and knowledgeable.... always available and excellent response time.”
“Martin's support and guidance made possible the sale of my property in very challenging circumstances. His professional demeanor was critical to land the closing.”
“My agent was Lucy Phelan at Keller Williams, and I had a great experience working with both Lucy and her brother Richard. Both had provided me with their expert advice, they would take extra steps to educate you and walk you thru the home shopping process. They would work on my schedule, try their best to answer all my questions and would point me to the right direction when I was looking for the lender, inspector, lawyer, etc. As a home buyer in this "Bidding War" market, most of my offers were turned down; however, both Lucy and Rich have continuously provided me encouragement to keep trying and looking. I cannot remember how many houses we have looked together...and when I was not able to look at the houses in person, they would video call me to conduct a virtual home showing. In general, they are exceptionally good with people skill, nice/friendly people to talk with and they show care on other things then just home buying. I would like to work with them again in the future and would recommend them to any home buyer/seller.”
“Audra Loccisano worked closely with my siblings and I to sell our parents’ house. She really knew the local Rahway market, as well as needed services and the city building ordinances. Audra had great interpersonal skills, too, and kept in constant communication. And she was especially expert at pricing strategy and negotiations. We were all very satisfied with Audra’s services, with a fast sale at a better than expected price. We can recommend her without reservation.”
“Julia is simply excellent! She listened to my wish list and helped me find the perfect home! She was there every step of the way and very responsive to my questions and requests.. if you need a realtor, Julia is the one! Thank you!”
“Allie is the best realtor. She found and made sure I got my dream house. You will not be disappointed! She is personable, pleasant, easy to reach, answers any questions you have, is on top of every step.....no need to go on....I think you got my point....she's fantastic!”
Mountainside real estate Market Report.
Information and statistics on the latest trends in the Mountainside real estate market, updated for December 2025. *
The typical home value in Mountainside is projected to be $743,500 for the month of November. October’s finalized data reported the typical value of a home in the city to be $938,000—up 5.75% over the previous 12 months. For comparison, county-level data pegged home values at $633,500 in Union County for the most recent reporting period. That number is expected to float around $633,380 in November.
Mountainside had 5 new listings and 9 listings that went under contract in October, decreasing the area’s total available inventory to 4—down 55.56% from the previous month. Inventory is projected to have further decreased in November.
The median listing price for homes in Mountainside grew 1.05% from September to October, bringing the current median listing price to $959,000. Based on projected data for November, listing prices may continue to grow.
The number of days that homes have been on the market prior to going under contract rose year-over-year. In October 2025, the median time for a listed property to go pending was 18 days, compared to -13 days in October 2024. In recent months the median number of days from listed to pending appears to be steady. That trend is predicted to have carried through to this November.
Market gauge is calculated based on the the number of active listings divided by home sales over the most recently available reporting period.
Learn more about what Mountainside has to offer.
Mountainside offers residents a close-knit community with top-tier schools, abundant green spaces, and convenient local amenities that support a balanced, active lifestyle.
Mountainside is a scenic community perfectly positioned on the edge of Union County, bordered by the tranquil beauty of Echo Lake Park and the rolling terrain of Watchung Reservation. With its tree-lined streets and proximity to Westfield and Summit, Mountainside blends suburban comfort with easy access to vibrant town centers.
Families are drawn to the area for its excellent educational opportunities. The Mountainside School District is highly regarded, and Deerfield Elementary School is at the heart of this close-knit community. Students benefit not only from small class sizes but also the district’s commitment to academic excellence and well-rounded development. For older students, convenient access to neighboring high schools in Clark and Scotch Plains is an added advantage.
Outdoor enthusiasts can explore miles of hiking trails, serene picnic spots, and playgrounds at Watchung Reservation, while Echo Lake Park provides year-round recreation with its lake, dog park, and summer concerts. The Trailside Nature & Science Center offers unique programming for all ages, making Mountainside a haven for nature lovers.
Boasting an unbeatable location for commuters, manageable taxes, and a genuine sense of community, Mountainside is a standout destination for those seeking a welcoming hometown feel. Whether you are purchasing your first house or considering selling your current property, Agent Pronto can help you find the perfect real estate professional to guide you every step of the way.
Frequently Asked Questions
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There are more than 2 million real estate agents across the U.S., and you want to be sure the one you partner with is an experienced and trustworthy professional with strong local expertise covering the housing market in and around Mountainside. Working with a proven agent will help you sell your home faster and for more money, and help you find your dream home at the best possible price.
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Choosing a real estate agent to help you buy or sell property is one of the most important decisions you’ll make in your lifetime. You want to make sure your agent is an expert in your area, has a proven record helping people buy and sell similar homes to yours, and is well regarded by their previous clients. Let us know a few details about the property you are selling or the kind of home you want to buy, and Agent Pronto will match you with trusted real estate agents that have the experience you need. And before you interview an agent, check out our top five questions to ask a buyer’s agent and listing agent.
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We consider performance metrics, close rates, specialties, and client reviews to qualify the best full-time agents. We then take the information you provide about the home you are selling or the kind of home you want to buy, and analyze the top local agents with the right experience for your specific needs. For more than a decade, we've helped hundreds of thousands of home buyers and sellers find the right agent. Get started now and find the perfect real estate agent.
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No. Agent Pronto is a free service for home buyers and sellers and you are under no obligation to work with our recommended agents. Find your Mountainside Realtor® or real estate agent today.
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