Sean Roseman & Sebastien Trottier
Sean Roseman & Sebastien Trottier

About us

With over 20 combined years of experience, Sean Roseman and Sebastien Trottier have built a well-established team based on their negotiating skills, knowledge and most importantly, the devotion they have for their clientele's well-being and vested interests. They have built wide ranging positive relationships within the real estate industry, enabling them to the best possible outcomes for both their buyers and sellers. Sean and Sebastien have attributed their growing success to countless referrals from clients that have appreciated the quality of service and personalized attention they received with their purchasing or selling ventures.

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Our properties

maison à vendre Hudson Vendu


House for sale


maison à vendre Montréal (Ahuntsic-Cartierville) Vendu

Montréal (Ahuntsic-Cartierville)

House for sale


maison à vendre Montréal (Le Sud-Ouest) Vendu

Montréal (Le Sud-Ouest)

House for sale


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Results you can count on


transactions 2020


Of average
of asking price




day sale

What our clients
are saying

« Je suis vraiment très satisfaite de mon expérience avec Roseman Trottier! J'ai bénéficié en particulier du précieux concours de Davina Josepovici pour la vente de mon condo... qui s'est réalisée en 10 jours! S... »

- Mélanie Dufour-Poirier

« Sebastien has that rare ability to take a nervous buyer and explain things clearly, slowly and followed with actual facts about the home, the inspection and the legal process of purchasing the home. We as first time b... »

- David Ottier

« We had a wonderful buying experience with Sebastien. He was incredibly helpful, available and patient. He offered very sound advice and did not put any pressure on us. He walked us through all of the steps, and was ve... »

- Oliver Wockner

« These guys will go up and above in finding you the best price and service....

I highly recommend and they deliver every time....

Thanks again »

- Joseph Max Schmerler

« Sean and Sebastien, are very efficient and professional. When problems would come up they would always come to my rescue. They would explain the process and take care of it . They know the business, great people to wo... »

- Mary Alguire

« As first-time homebuyers we could not be more pleased with Davina's service and expertise. The entire process was as smooth and stress-free as a home purchase can be. We would not hesitate to recommend Davina and the ... »

- Amanda and Jason

« Sean and Davina did an excellent job selling our undivided two bedroom apartment in Verdun. They were professional and prompt, straightforward and very easy to work with. They made a stressful task an easy one, helpin... »

- Rebecca Dorner

« We sold our house in Ville Emard and bought our dream house in the West Island only thanks to Sean expertise. The whole process seemed very scary due to the shortimelines we had in mind (2 months) and the whole pandem... »

- Maria and Rodrigo

« Despite the uncertainty and challenges of Summer 2020, Sebastien and Davina were able to secure me a wonderful spot to live in! I am forever grateful for this service and the care that went into it. They were very or... »

- Hannah

« Finding your ideal property is not a quick and easy process. It took me quite a few months and numerous visits to find the perfect place. During all those months, Sean was always patient with me, giving good personali... »

- Magali

« Merci à Sébastien pour son professionnalisme ! L'achat de notre première propriété s'est fait comme un charme, sans stress, ni ambiguïté. Nous avons été bien conseillé tout au long du processus.


- Samuel et Catherine

« We have been looking for the right partner in our real estate ventures for many years. When we met Sebastien in 2015, our search was over. The confidence, compassion and risks that he took cemented him as the perfect ... »

- Rudy Granovsky and France Picard

« Nous avons vendu 2 propriétés et acheté 1 propriété avec les services de Sébastien. C’est toujours un plaisir de travailler avec lui. Il est très professionnel, rassurant et confiant projet après projet. Not... »

- Audrey Massicotte et Marc Chevrier

« Sean recently helped me in purchasing my first condo in St Henri and while this is probably the most stressful thing I’ve ever done, I at all times felt completely confident with Sean. I went through a period where ... »

- William Hall

« Sean & Sebastien are two passionate, focus, and witty realtors. Their uncharacteristic interest in real estate is contagious, one would wonder if they should have been architects. Their service, well I would say, thei... »

- Westphal Jean-Paul

« I have used Sean and his team for 2 income property purchases in Verdun. His knowledge of the market and the neighbourhood are second to none. For my owner occupied building he managed to find me the perfect place ... »

- Tara MacDonald

« We first used Sean's services for buying a home in the Emard/Cote St Paul neighborhodd. We were very happy with his service. We had been desperately looking for 2 years for our family home and within a couple months... »

- Sarah Smith

« As a first time home buyer, I was referred to Sebastien by a friend who had nothing but great things to say, and after successfully purchasing my new home, everything I was told about Sebastien was true. I told him ex... »

- Jeff Lyall

« My whole family has entrusted the sale and/or purchase of our homes to Sean. He is always available and he listens carefully to our sometimes complex needs. Sean is someone we can trust ,someone we can count on and s... »

- Nick and Diane Ceravolo.

« Sean Roseman and team have provided is with their professional talents as real-estate agents. They are very qualified and will do whatever you need to meet your preferences. We purchased and sold a condo a couple of ... »

- Stephanie and David Burgess

« J'ai eu le plaisir de travailler avec Sébastien pour la vente et l'achat de mon condo, et dans les deux cas ce fut une excellente expérience. Sébastien a su me guider dans toute les étapes de la transaction, il po... »

- Odile Fortier

« Sean Roseman has helped us buy and sell total 3 homes. Sean has always taken as much time as needed for us to understand each part of the transaction. He has continued to go above and beyond what was required of him. ... »

- Jeff

« During the liquidation of an estate property, Sebastien demonstrated his significant skills in completing a complicated sale. The property was not without complications but Sebastien was able to see the inherent valu... »

- Gunnar Beauregard

« Over the last 10 years we have had the opportunity to work with Sean for both purchasing and selling. As a team, Sean and Sebastian sold yet another one of our homes a few months ago and it was without a doubt, a posi... »

- Diane

« I've worked with Sean on numerous transactions and he always seems to exceed expectations. His attention to detail and honest straight forward approach, creates peace of mind when negotiating a property with him. A tr... »

- Mike Girouard

« Selling our condo and finding a home at the same time is supposed to be a major stress. Sean Roseman was our agent and not only did he give us the best advice, he was patient, helpful, understanding and he found us ou... »

- Jessica

« Place is great so far! Would be glad to say something. Sebastian knows his stuff. He was able to find us an ideal place in a very active market and get an offer out and accepted in a very fast and efficient manner. 10... »

- Elliott Beaudin

« Thanks to Sean's expertise, specifically his keen knowledge of the downtown market, we were able to sell our condo within four days and after competing offers. We couldn't have asked for more. »

- Angie

« I've known Sean for several years and have had the pleasure of working with him a few times. Most recently Sean helped us find a new home in an amazing up and coming neighbourhood and at the same time helped us to fin... »

- Marc Tanguay

« Very professional! Great experience! »

- Steve Shoiry

« Buying a second property with Sean for my business was an absolute pleasure. He was dedicated to finding the perfect place for us and always had our best interest at heart. We would recommend his services to anyone lo... »

- Jodie Richardson

« Sean Roseman helped us with the purchase of our first home. As first time buyers, we had many concerns and insecurities. Sean answered all of our questions and was always there to give constructive advice along the wa... »

- Luiz and Cathy Salles

« I have worked with many real estate agents over the past couple of years and my experience with Sean was by far the best. He devoted a lot of time to showing me houses on the market. Was diligent and quick to alert me... »

- Melissa Tyer

« As a newlywed couple, we were in market for our first home together. In dead of winter when the entire city is sleeping, Sean hit the snow working to find us a home. With all the agents we have dealt with, Sean bring... »

- Ashley Morgan

« We never thought buying a home could have been so simple. Sean help us with the whole process from the mortgage referral, who helped us understand how much we could spend on our home, to referring the inspector and n... »

- Oscar Westphal

« Our experience with Sebastien was excellent. He helped us to find a very nice rental apartment to begin our new life here in Montreal. Later on, with his professionalism and dedication, we bought our first house in Ca... »

- Mingang Yand and Minghao Jiang

« I have worked with Sean on several transactions and I have also worked with several other real estate agents, Sean is my favorite, by far! Sean has helped me through some very tough spots. For instance I needed to unl... »

- Wayne Burke

« Nous avons fait affaire avec Sébastien pour l’achat d’un 1er condo en février 2019. Nous avions beaucoup de craintes mais Sébastien a su nous rassurer tout au long du processus. Il était non seulement très pr... »

- Alain Noel

« Just a quick note to let you know that, on behalf of my brother and I, we wish to say thank-you for your care and professionalism which you displayed in overseeing the sale of our mother's house.
From the origin... »

- Karl

« Good afternoon Seb, Hope you are doing well. It is really nice to hear from you. It was a pleasure to refer you! It was the least we could do, and we will continue to do in the future if anyone is looking to sell a ho... »

- Travis and Sarah

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Our sold properties