We could not be happier with our experience with Mark. He is knowlegable, efficient, available and professional.

Very experienced agent - we felt informed, guided, supported for the duration of the sale process. Excellent!

In the past, when they existed, I have spoken to other agents in Castlecrag , but none of the others has ever come close to approaching the level of integrity that I always feel I experience with Mark. In short, I trust the guy. Obviously he is after all a salesman and very experienced one, but I never had any cause to doubt his credibility which I believe is paramount in his industry. Mark is always quick to reply to questions and always does what he say he will do - and one can't ask for much more than that. Mark has the sense ( and empathy) to know just the right amount to talk, and the right time to leave you alone. I know of nobody who would have a great knowledge, or understanding, of the business of buying or selling houses in Castlecrag If circumstances permitted I wouldn't want to even talk to anyone else. Andrew Gee

Mark was flexible and willing to adapt his sale method to our needs using an "off-market"/quiet process. He was patient and courteous in all our communications; generous with knowledge, guidance and advice; and displaying a great sense of humor (helpful in tense moments!). Mark's knowledge of Castlecrag is superior to other local agents. We were delighted with his professional service.

Mark's knowledge and experience of the market we needed to tap into was unambiguously superior to that of other agents. His communication style is direct, no fuss and free of unnecessary hyperbole. Mark was given a thumbs up by others I know who have worked with him in the area, I'll be doing the same.

Mark was a breath of fresh air in our dealings with the real estate world while looking for a property His relaxed approach gave us an opportunity to look at the property with our own eyes rather than the eyes of someone else ie an agent. he was realistic in his appraisal so there was no surprises along the way!

Mark sold our family home of 45 years at Castlecrag. Mark's level of professional and knowledge of the market gave us great confidence in our dealings with selling the property. He gave us great ideas on the presentation of the property and the best way forward to complete the sale. Thanks for your help Mark.

We chose Mark because of our view that he is the highest calibre agent in Castlecrag and has the greatest depth of contacts and relationships with potential buyers in Castlecrag. Interestingly, Castlecrag property is often sold to people already living in our around Castlecrag who are looking to 'trade up'. Mark gave us excellent advice on preparing the property for sale and planned and executed the sales campaign very well. Mark is highly professional.

Mark O' Brien has a long history with Castlecrag. This makes him a specialist in this suburb. 5 The Tor Walk required the skills of such a specialist, whose professional demeanour and marketing prowess enabled a quick and successful sale.

It's been a genuine pleasure to deal with Mark from the get-go to finish. Mark's knowledge, communication and flexible attitude have made him the exception rather than the rule when it comes to working with an agent. Nothing was ever too much trouble. Hats off to you Mark!

We recently bought a house through Mark. We found it a very professional experience, he did what he said he would do while representing his client at all times. Even though he extracted our top price off us, we’re still really happy we secured the property.

Mark was always available to update us on a dynamic situation. He recognised us as serious buyers and dealt with us in a friendly, professional and respectful manner.