24 Valley Street Mayville, NY 14757

“Mark Sleggs is an excellent real estate agent, friendly, accommodating, knowledgeable and professional. I've recommended him to many others and am looking forward to working with him in the future. I am very happy with Mark's services.”

Jim Mayshark, Sherman NY
November 12, 2025

“Mark did any outstanding job.”

Deanna Goodwill, Sherman NY
November 12, 2025

“Trustworthy and Honest:
I always felt that Mark Sleggs had my best interests at heart. He provided honest, transparent advice and guided me through the process with integrity. I truly trusted Mark Sleggs judgment and never felt pressured.
Always Accessible:
Communication was a breeze. Mark Sleggs was incredibly responsive, whether by phone, email, or text. He was always available to answer my questions and address any concerns promptly, making me feel like a priority.
Knowledgeable and Professional:
His expertise in the local real estate market was evident. Mark Sleggs had a keen understanding of property values, market trends, and the negotiation process. His professionalism and insightful advice helped me navigate a complex market with confidence.
Friendly and Approachable:
Beyond his professional skills, Mark Sleggs was simply a pleasure to work with. His warm, friendly demeanor put me at ease during what can be a stressful time. He was patient and supportive throughout the entire”

Scott Clark, Lakewood NY
November 12, 2025

“Mark is a very professional real estate person and I hope that we can do more business with him. 100% recommendation. It's a pleasure to work with him”

Christian, Fort Myers
November 12, 2025

“Mark was an excellent agent who was with us from start to finish in the sale process. He was most helpful as the sale progressed and helped us complete several crucial tasks by the end of the sale -- we would have not been able to do it without him. Mark's professionalism and courtesy/respect for others are top notch -- he's the calm in a storm and always has a thoughtful answer.”

Sam McCrimmon, Memphis, TN
November 12, 2025

“Mark was professional and personable. This was part of my mother's estate and he was understanding of the situation. I would give Mark Sleggs and Century 21 a favorable recommendation.”

Karen Houser, Sinclairville, NY
November 12, 2025

“Mark Sleggs is professional, knowledgeable, and also personable. If I had questions, he was quick to respond, and always kept me informed on the status of the sale. He was a pleasure to work with!”

Rodney Lemk, Ashville, NY
November 12, 2025

“Excellent communication. Easily accessible. Goes out of his way to accommodate your move. Warm personality and fun to talk with. Works well in communicating with attorneys and staff. I'd highly recommend! Trustworthy and tells it like it is in a gentle way.”

Kathryn J, Chautauqua County, NY
November 12, 2025

“I knew that I was in good hands with Mark as my realtor. Mark kept me updated throughout each step of the process. He understood that I was a first time seller and made sure to explain my options so I was able to make informed decisions. I am so grateful for his help! He made my first home sale so much easier.”

Aubrey C, Fredonia
November 12, 2025

“Mark was very knowledgeable about the surrounding area and helped us become familiar with the city of Jamestown.”

Alexander Irwin, Erie
November 12, 2025

“Mark Sleggs is very helpful, knowledgeable communication was excellent sent everything right out would recommend for family and friends.”

Cody labadie Lakewood
November 12, 2025

“I believe that I have provided enough information so that Mark Sleggs is seen as an ethical, compassionate, thorough, and patient realtor. Considering the dubious level of esteem that realtors in general carry in our society, this is a high honor, and he deserves it.
I am a person who places trust in an individual based on qualitative rather than quantitative data. Observing Mark as an individual and relying on his reputation within the parochial community, I felt confident that he was totally trustworthy. I'm sure that many prospective clients would want to have "hard data" of sales records, but anyone who believes in testimonials should believe this one - once the trustworthyness of the author (myself) has been verified. Google searching my name and location will allow that!”

Terry Solomonson, Fort Wayne, IN
November 12, 2025

“Mark did a great job”

Rob Hayes
November 12, 2025

“Mark did a great job with a tough time line and I live in Kansas. Communication were good. Very knowledgeable about the market & the area. If you are selling your property you should take the time to talk with Mark first. Thanks again Mark.”

RoryGertsch. Kansas
November 12, 2025

“The whole process was handled extermely well. Right from the beginning I felt Mark had my best interests at heart and he followed through on that with flying colors.”

Terry Lyle Jamestown, NY
November 12, 2025

“Mark Sleggs is super easy to work with. He had a lot of consideration, patience in the prep stages, was very helpful by lending a helping hand, showed professionally, sold quickly and processed in good time... I love that he wasn’t pushy or rushed but he was prompt when you needed him. Highly recommend.”

K Jones, Falconer/Jamestown NY
November 12, 2025

“This was not a fancy lakeside property. It was a farmhouse that had issues, (bees, frozen pipes, repair requirements). Mark dealt with all issues and problems keeping buyers interested and ultimately completed the sale at our asking price.

I feel certain we will be working with Mark again when we decide to sell some of our other properties in the area.”

Jim Mayshark Sherman, NY
November 12, 2025

“Mark is wonderful to work with. He is highly professional, experienced, and knowledgeable. I had so many questions along the home purchase process, but Mark was very patient, and he has answered all of my questions thoughtfully and clearly. Mark has put in extra time and effort to find us the right home for my family. Even though there were unexpected challenges during the process, Mark was greatly helpful and reliable to go through the obstacles. I'm extremely thankful to him for his work. I'd highly recommend Mark to other customers no matter whether they are first-time homebuyers or experienced buyers.”

Hyungsuk Kang, Jamestown
November 12, 2025

“I would highly recommend Mark Sleggs to others that are looking to purchase or sell their home. Mark was always available to answer any questions that I may of had, if he didn’t know the answer at the time he would find out the answer and get back to me in a timely matter. It was a difficult time for my daughter and I to move with the Corona virus in full swing. My daughter and I are both essential workers and we’re both working extra hours during this time. Mark even offered to help us move!!! Thanks again for everything Mark.”

Cindy Rodgers, Falconer NY
November 12, 2025

“Mark Sleggs was known to me before he started at Century 21. I had considered other brokers, but hadn't found anyone I was comfortable with until Mark. I knew he would be honest, work in my best interest, and be mindful of my feelings. Because the property was listed just before the holiday season, Mark let me know there might not be much interest in it until after the New Year, which was what happened. I just left everything in his hands. I did check out the online advertising and thought it was well done. Because it was rental property, one of my concerns was the interruptions to my tenants' lives. Mark did a very good job dealing with that situation. I feel Mark did a very good job for me and knowing him as I do I feel he would do the same for every client.”

Sandy Kilmartin, Mayville
November 12, 2025

“Mark sleggs is an outstanding realtor and person

I would personally recamend Mr. Sleggs to anyone. He is a very professional and honorable man”

Aaron Gustafson, sherman
November 12, 2025