Mark O'Brien did a great job helping us sell our house. I recommend him highly.

Mark is an experienced and dedicated agent who brings to bear many years experience working in the area. He expertly helped us prepare our house for sale, handled the viewings and assisted us to negotiate the best deal possible for it. A pleasure to work with and highly recommended.

Mark was at all times courteous and professional. I appreciated the time he took to lead me through the daunting task of selling a home. His awareness of the market and prospective buyers was both comforting and encouraging. I would strongly recommend Mark to any prospective seller or home purchaser and I wish him well, Robin Hussey

Working with Mark O'Brien from Richardson & Wrench Castlecrag for securing this property was seamless. With his knowledge and expertise as well as with his transparent communication he provided us with a realistic guide. Highly recommend Mark for all those Buyers & Sellers as he was helpful with any questions we had with respect to the property and was very professional when approached.

Working with Mark was an absolute pleasure. We were genuinely impressed with his knowledge of the (hyper) local property market down to each street and house. Part of our success buying our house was the right people helping out and we were lucky to have Mark on our team.

Mark combines unbeatable local knowledge with years of real estate experience. He got stellar results for us and I greatly appreciate his professional advice and work.

Mark was very professional throughout the sale process and always kept me in the loop. Thanks to Mark the sale was straightforward and painless, definitely would recommend

I have had the pleasure of knowing Mark for several years and he has always operated with upmost professionalism, working hard to achieve outstanding results for his Vendor's. Whilst marketing my property, Mark worked tirelessly to achieve an excellent result prior to Auction. I would highly recommend him to anyone considering selling their home who wants a professional Agent on their side. Thank you so much Mark!

Mark simply knows the suburb of Castlecrag. He has always been very pleasant to work with, and the trust in him that his many contacts have helped greatly in selling our property!

Execllent. Mark informed me of the situation regarding this property and I, likewise, informed Mark of my desires. We inspected the property at a moments notice. I guess he was free fortunately for me as my time is limited. We made an offer after discussing the property's worth. Mark discussed my offer with the vendors and all was agreed. Lawyers representing both sides discussed the contract and minor amendments were made, all to everybody's benefit. A very professional transaction well done. I might add that I have found dealing with Mark over the last 30 odd years is always a pleasure.

Mark has recently helped me to list and sell my investment property. The market in the area was tough despite everywhere else, but I had the confidence that with Mark I can achieve the best realistic outcome regardless, which proved to be correct. Mark is undoubtedly one of the most competent, knowledgable and dedicated real estate agents that one could find in the Sydney's tough and dynamic real estate market. The quality of service delivered by Mark and his team is far beyond normal sale services that one could expect and receive from typical agents who deliver one-size-fits-all approach. He performs deep market research specific to the property, thinks through options and develops a custom sale approach and plan that is specific to every individual property and market. I strongly recommend Mark to any vendor who needs professional advice, fit-for-purpose and efficient sale approach and eventually the best outcome. Thank you so much Mark for your hard effort, consistency and patience in selling my property.

I bought my house in Castlecrag through Mark in the 1990's. Based on that excellent buying experience, I then chose to sell through Mark in 2021/22. I found Mark to be consistently courteous, helpful, dedicated, highly experienced, and very knowlegable on the local Castlecrag and surrounding area. Mark provided excellent communication on the sales process, likely purchasers and follow up and generation of leads and idea for presentation. Mark kept me well informed and up to date, and I trusted Mark to provide good advice on current market conditions, which he did. Mark presented the house well, and helpful in all aspects of the listing and sales process. Well done and thank you Mark. I would definitely buy and/or sell through you again! You made the process easy and smooth.