"Please note that Valentina has been managing our sponsor units at 3184 Grand Concourse for a number of years, and she has done an excellent job. Her office deals with our tenants as well as the building management when any issues arise. They also take care of maintenance-related problems in a timely and professional manner. Most importantly, Valentina and her staff are a pleasure to work with. I strongly recommend Valentina's company as potential managing agents for your cooperative building." - Mark Weissman


"I am extremely impressed with their outstanding service and dedication to the client. We wholeheartedly recommend them and have confidence in the quality of their work." - Ronald A. Sher, Esq.


“Onesource provides Full management of the building: rent collection, maintenance, repairs, lease management and renewal, evictions, finding new tenants, etc. We have been working together since April 2019. Excellent responsiveness. Valentina and her team are extremely responsive, honest and trustworthy. One Source has provided contractors and supervise maintenance when it needs to be done. Roof, windows etc. I’ve never had to lift a finger. 
One Source Management saved my building, increased the rent roll and they control costs very responsibly. They treat every building as if it’s their own, with respect, care and integrity. I am in the market for more real estate to give to them to manage because they make it so easy for me. “ - John Siderakis


Excellent Service ! Fast and Great to work with !  - David Platschek


Great management company, helped our co-op building improve our finances and operations dramatically. Always quick to respond to phone calls and emails, and dedicated to making the building better and addressing numerous challenges. – Ashely Lahoud


Juliana has been very attentive to all my questions and concerns. Her professionalism is top tier she is very well appreciated. Thank you! – Jhoanny Duran


One Source has been a lifesaver. We brought them on as a property manager for our property. One Source was professional and supportive and helped to keep things moving forward. They utilize a crew of knowledgeable vendors that are reasonably priced and perform quality, timely work. Would highly recommend them! – Jessica Black


Valentina and her team are the best, period. – Mark Wang


I went to this management company with not much hopes because I was having such a hard time finding a place but I was so grateful to have worked with Juliana. She was knowledgeable, patient and kind towards me. She answered all of my questions and addressed any concerns I had. If you go here, ask for Juliana as she knows what she's doing and gets the job done! Super grateful for her having turned around my situation. Recommend Onesource property.  – Dave Ari


I've been working with Juliana and they have been fantastic. They are always responsive, addressing any issues or concerns quickly and efficiently. Juliana’s professionalism and attention to detail have made managing my property stress-free. I highly recommend Juliana for anyone looking for a reliable property manager. – Jelissa Hernandez


I highly recommend One Source property management. They are reliable. Juliana is an experienced professional with efficient problem solving abilities. Juliana works with you until she gets the job done. She is patient and she is able to communicate in Spanish. I actually give them 10 ⭐️s! – Christina Robles


The property managers at One Source are very dedicated, responsive, conscience and always reply back promptly. – Chris Donnellan


Juliana has been an amazing building manager since the day I met her. Anything I’ve needed or asked for she has been there 100% no matter the time or situation. Really wish there were more building managers like her that actually care for the tenants of the buildings she’s in charge of. And love how professional she is about everything. Thank you again for such the wonderful work you do. – Felicita Rosario

5 Star – Thierno KA


Juliana was so professional and got back got to me promptly . She gave me excellent customer service and answered all my questions . Thank you so much !! – Ashley Aponte


OneSource has always exceeded our expectations when it came to the servicing of our property. Maintenance & service of our units were professionally and efficiently handled proactively by the team. All hoc requests were dealt with kindness, speed and efficacy. The team is truly professional and what I consider "best in class" for the industry. – Hayley Rydowski


One Source Property Managment is great!
They are dedicated professionals who stay one stop ahead of any problems that may arise and will always have your interests at heart. They are knowledgeable and make sure to keep you informed of the latest twists and turns of city regulations. Their excellent recommendations continually save us money: repairs are performed efficiently and cost-effectively, our insurance and legal costs dropped, etc. All in all, we cannot recommend them enough! – Rachel Dodson