This agent has 18 reviews.



Marlena Kopacz, a buyer from Lafayette, CO
We found Jon through reviews online to help us in our home search as first time home buyers in Colorado. We interviewed other realtors but are happy with our decision to choose Jon. He is a straight shooter and provided valuable input and guidance through the entire journey of home buying. There were many times where we had to reset our own expectations on what it would take to get the house we are looking for, in the location we want and what the right budget was. He was patient as we worked through this and there were many times where we were considering properties that needed a lot of work and he provided great advice on level of effort versus rate of return for us to consider in our decision making and it never felt bias - it was based more on historical facts/trends. Once we got under contract on our house, the process started to move quickly and Jon was able to guide us through some complicated negotiations - throughout this, we always felt that he had our best interests in mind. You can count on Jon to be your advocate in any home purchase. We would definitely recommend him to anyone looking to buy property in the state.
2023
Paige S, a buyer from Lafayette, CO
As a first time home buyer, Jon was pivotal to getting our deal across the finish line at our target price and location. He was an expert on the market, available whenever we needed him, and connected us to trusted partners from bankers to insurance providers to help us close quickly. I'll be working with Jon for every home I buy or sell in the future.
2023
Shaw Cortez, a buyer from Boulder, CO
It was a pleasure working with Jon throughout the entire process of purchasing a home. He was always prompt, prepared, and willing to investigate any queries we had. This was particularly helpful for us being first-home buyers! Overall he was professional, yet with a calm, easy-going demeanor, which is what you want when dealing with negotiations with the seller. He has years of experience in Boulder and surrounding areas, which helped in knowing specific rules and regulations associated with the properties. My wife and I are happy with our new home and highly recommend Jon to anyone looking to purchase a home.
2022
Leia s., a buyer from Superior, CO
My partner and I worked with Jon for our first home purchase. Jon consistently demonstrated clear communication and his expertise as he guided us in a supportive, patient, and practical way to find the right home. With such an important financial decision as buying our first home, we could not have partnered with a better agent!

2022
jesse, a buyer from Boulder, CO
Jon was an incredibly knowledgable and accessible agent. He patiently answered every question we threw at him with aplomb, and his local knowledge and professionalism spoke for itself. I would highly recommend him to anyone, and first-time homebuyers in particular.
2022
Irene, a buyer from Longmont, CO
We found Jon to be an exceptional realtor in our experience of buying a home in Longmont. He has an extensive knowledge of the area and, as a Boulder County resident, we were assured that he was familiar with all the neighborhoods. Working remotely with him, we were able to view homes and make solid, competitive offers with his guidance. He went out of his way to make sure we were comfortable with each step in the closing and had our back for any unexpected glitches that would have popped up. In today's market, he's the kind of realtor that you want to work with -- you'll be able to navigate the changing market quickly, make competitive bids, and close smoothly on the house you want.
2022
paul, a buyer from Longmont, CO
Jon was great! He was helpful and knowledgeable. I would definitely recommend him.
2021
Christie Lemon, a buyer from Lafayette, CO
Jon is a pleasure to work with, and we highly recommend him for all your realtor needs. He's knowledgeable and has a relaxed and calm approach to dealing with people, making you feel at ease - excellent for negotiations. He's also responsive and efficient.
2021
Jenny, a buyer from Boulder, CO
As a first time buyer in a competitive market, I felt overwhelmed about even starting the process of looking at real estate. On top of that, I was recovering from health issues which required that I find a newer place with its own independent air system, among other demands. As soon as I started working with Jon my fears dissipated. He knows the market and process to a T and was so knowledgeable, positive and accommodating the entire time. From our first conversation, to making an offer, to financing, to finding vendors to do inspections, flooring etc, to closing day paperwork questions, Jon was the best person I could have had on my team, and everyone he recommended was equally a pleasure to work with. I felt prepared and it only took one offer to get the job done. Thank you Jon, we truly couldn't have done it without you!
2021
Roger Lee, a seller from Boulder, CO
Jon was great!
We were working on a timeline and our budget wasn't huge and he worked with us every step of the way. He responded to calls and texts promptly, he does his homework and we couldn't be happier. His experience is extremely helpful especially for first time home buyer. And we will be looking forward to work with him again once we are ready for the second time buyer.

Hayley, a seller from Boulder, CO
Simply put, Jon was the BEST! From the start Jon carefully listened to what my family and I had wanted. With it being my first home, he got to know what we were looking for and what we were not looking for through in-person showings, informational texts, and over family phone conversations - talk about patience! He explained that his job was more service than sales and always made us comfortable even when it became difficult. Jon has thorough knowledge of the local market in Boulder and has a keen eye for what value can get you in this area. Would definitely recommend Jon to a friend - A++ realtor.
2020
NG, a seller from Lafayette, CO
We are so happy we had Jon to guide us through our first home buying experience. In our market, speed is essential. I truly appreciated how quickly Jon acted each time we reached out to request a tour or put in an offer. Jon has a great eye for design, is a shrewd negotiator and offered excellent counsel when challenges arose. Even after we closed, he made sure all loose ends were tied and we had all the referrals we needed. He helped us find the perfect home for us and we'll surely be coming back for our next real estate transaction.
2020
Allen , a seller from Boulder, CO
It is critical for a buyer to make a reasonable offer. Jon provided pretty good insights. He is a person diplomatic to work with the opposite side agent. After comparing the work ethics with the other side agent, we just feel he is a better person to work with due to the responsibility in handling the schedules on the contract and the capability of handling issues. I appreciated and will recommend Jon for others.
2020
Nate, a seller from Longmont, CO
Jon's professionalism and kindness made the process enjoyable from start to finish. We felt heard at every step and valued his experience, market knowledge and friendly demeanor. He took the time to explain everything in a manner that we could understand and was adept at navigating the negotiation process. Thanks Jon. You are appreciated.
2020
Roger, a seller from Longmont, CO
The best. Always responsive, knowledgeable, absolutely no pressure, and extremely easy to talk to. Advice was always accurate, timely, and appropriate. As an out of state purchaser I relied on Jon multiple times to handle all the things that come up in purchasing a home and he always went above and beyond. Not only is he an excellent agent to work with, he's an outstanding human being.
2020
Kreighton Bieger, a buyer from Boulder, CO
I had a great experience working with Jon. I needed a new realtor after doing eight transactions in 20 years, and Jon delivered on every front. He was helpful, organized, efficient and also respectful of my needs and intentions. I highly recommend him and his services.
2019
Jess Hargis, a buyer from Boulder, CO
Jon Sisenwein went above and beyond our expectations. I call him a "Super Broker." Without Jon Sisenwein we would have never found our house. The Boulder market is tough! Jon consistently got us in to see listings before the open houses, pulled comps so we could evaluate the best offer, and was able to negotiate an offer within our budget but over ask that convinced Seller's broker to take the property off of the market before the open house! He is extremely communicative and responsive via text, phone and email, and is a WEALTH of knowledge on the Boulder area. He knows the neighborhoods, the schools, the people at the title company, the lenders and even the contractors to line you up with if your home needs work. I HIGHLY recommend him. Coming from the NYC area we had no idea Boulder would be so tough. Jon was a dream and got us our dream house.
2019
Cristina, a buyer from Boulder, CO
Jon is an amazing realtor! He is super knowledgable, responsive, patient, and walked me through the home buying process every step of the way. He helped me find the perfect home. I am extremely grateful and highly recommend Jon to anyone searching for real estate in the Boulder area.
2019