

I had a very good experience with Cosmos Values AG and the agile and goal-oriented Ms. Rena Wisler. Everything was very professional and perfect, which led to a good, fair sales result / sale price. The support for the buyers was also exemplary and of high quality. The entire formal sales process from the notarial purchase contract to the transfer of ownership was perfectly and stress-free organized. By the way: I found Ms. Wisler through a recommendation from enthusiastic acquaintances who previously used the services of Cosmos Values for the sale of real estate.


I had a very good experience with Cosmos Values AG and the agile and goal-oriented Ms. Rena Wisler. Everything was very professional and perfect, which led to a good, fair sales result / sale price. The support for the buyers was also exemplary and of high quality. The entire formal sales process from the notarial purchase contract to the transfer of ownership was perfectly and stress-free organized. By the way: I found Ms. Wisler through a recommendation from enthusiastic acquaintances who previously used the services of Cosmos Values for the sale of real estate.


Mrs Aarefa Amini was very helpful during my first real estate investment in Zurich. The quality of her service, the type of real estate selected and the high standards in deliveries met my full expectations. I highly recommend her as a partner for real estate investment and in partircular the real estate agency she runs. It was a pleasure to work with her and will maintain such business relationship for further acquisition.


Mrs Aarefa Amini was very helpful during my first real estate investment in Zurich. The quality of her service, the type of real estate selected and the high standards in deliveries met my full expectations. I highly recommend her as a partner for real estate investment and in partircular the real estate agency she runs. It was a pleasure to work with her and will maintain such business relationship for further acquisition.










We commissioned the company Onesta Simon Leu in 2023 to sell our modern 5.5-room apartment and were very satisfied from the very beginning. Already during the first conversation, the company made an extremely serious, competent, and trustworthy impression. Throughout the entire sales process, we were always well taken care of and regularly informed about the current status. The communication was always open, transparent, and straightforward, so we were always well-informed. The sale of our property ultimately proceeded to our complete satisfaction. We sincerely thank you for the professional support, great commitment, and pleasant collaboration. We can wholeheartedly recommend this real estate company and would work with them again at any time!


We commissioned the company Onesta Simon Leu in 2023 to sell our modern 5.5-room apartment and were very satisfied from the very beginning. Already during the first conversation, the company made an extremely serious, competent, and trustworthy impression. Throughout the entire sales process, we were always well taken care of and regularly informed about the current status. The communication was always open, transparent, and straightforward, so we were always well-informed. The sale of our property ultimately proceeded to our complete satisfaction. We sincerely thank you for the professional support, great commitment, and pleasant collaboration. We can wholeheartedly recommend this real estate company and would work with them again at any time!


Ich habe mein Haus über Jacqueline von Ow von onesta gekauft und bin mit der gesamten Betreuung mehr als zufrieden. Während des gesamten Kaufprozesses wurde ich von Jacqueline mit grosser Professionalität, persönlichem Engagement und viel Herzblut begleitet. Sie hatte jederzeit ein offenes Ohr für meine Anliegen und stand mir bei Fragen stets kompetent, zuverlässig und hilfsbereit zur Seite. Besonders beeindruckt haben mich ihre ehrliche, offene und sympathische Art sowie die partnerschaftliche und vertrauensvolle Zusammenarbeit. Ich habe mich während des gesamten Kaufprozesses jederzeit bestens aufgehoben und beraten gefühlt. Sollte ich mich eines Tages dazu entscheiden, mein Haus wieder zu verkaufen, wären Jacqueline und onesta ohne jeden Zweifel meine erste Wahl. Ein herzliches Dankeschön für die ausgezeichnete Betreuung, das grosse Engagement und die rundum angenehme Zusammenarbeit.


Ich habe mein Haus über Jacqueline von Ow von onesta gekauft und bin mit der gesamten Betreuung mehr als zufrieden. Während des gesamten Kaufprozesses wurde ich von Jacqueline mit grosser Professionalität, persönlichem Engagement und viel Herzblut begleitet. Sie hatte jederzeit ein offenes Ohr für meine Anliegen und stand mir bei Fragen stets kompetent, zuverlässig und hilfsbereit zur Seite. Besonders beeindruckt haben mich ihre ehrliche, offene und sympathische Art sowie die partnerschaftliche und vertrauensvolle Zusammenarbeit. Ich habe mich während des gesamten Kaufprozesses jederzeit bestens aufgehoben und beraten gefühlt. Sollte ich mich eines Tages dazu entscheiden, mein Haus wieder zu verkaufen, wären Jacqueline und onesta ohne jeden Zweifel meine erste Wahl. Ein herzliches Dankeschön für die ausgezeichnete Betreuung, das grosse Engagement und die rundum angenehme Zusammenarbeit.


Professional and prompt handling of the apartment sale. Nice sales documentation. I can recommend it.


Professional and prompt handling of the apartment sale. Nice sales documentation. I can recommend it.


From the very first second until the end - and beyond - we experienced Stefan as friendly, knowledgeable, and always professional. The property was systematically and thoroughly evaluated. Two other independent assessments came in at the same price. It was good to know that we were not selling below value, but also that we were not trying to deceive anyone with an inflated price. The entire process was expertly managed and went smoothly. Communication was always timely and purposeful. The experience: simply first class!


From the very first second until the end - and beyond - we experienced Stefan as friendly, knowledgeable, and always professional. The property was systematically and thoroughly evaluated. Two other independent assessments came in at the same price. It was good to know that we were not selling below value, but also that we were not trying to deceive anyone with an inflated price. The entire process was expertly managed and went smoothly. Communication was always timely and purposeful. The experience: simply first class!






A challenging process is coming to an end: We sold our family apartment in a unique old property and bought a smaller apartment in "Bauhaus style" for our next "epoch" as a couple. What is needed? Urgently a realtor who combines sophistication with empathy and creativity with resourcefulness: Richard Kaser does this with brilliance, nonchalance, and intuition. With his charming wife, his dedicated son, and the creative Alexander Scheuner, we ultimately felt very successfully accompanied: We have found the property that now perfectly suits us and found a wonderful family for the old and spacious estate. We look forward to more great clients for you and are happy to remain connected.☺️


A challenging process is coming to an end: We sold our family apartment in a unique old property and bought a smaller apartment in "Bauhaus style" for our next "epoch" as a couple. What is needed? Urgently a realtor who combines sophistication with empathy and creativity with resourcefulness: Richard Kaser does this with brilliance, nonchalance, and intuition. With his charming wife, his dedicated son, and the creative Alexander Scheuner, we ultimately felt very successfully accompanied: We have found the property that now perfectly suits us and found a wonderful family for the old and spacious estate. We look forward to more great clients for you and are happy to remain connected.☺️