Mark Costello

I sold my property with iThink Property via an off-market campaign led by Mark Costello. While the property sold at the asking price, I was ultimately disappointed by the lack of diligence and strategic effort throughout the process. Although an offer was received within 24 hours, which initially seemed promising, that same weekend my neighbour’s open home attracted 34 buyer groups and multiple offers—something I had flagged with Mark in advance. Despite clear local demand, there was no attempt to generate additional interest or create competition. When I followed up, I was simply told there were no enquiries, which didn’t align with what I had witnessed next door. With no other offers presented, I accepted the initial offer based on Mark’s assurance that the buyer had finance to complete and was proceeding on a 30-day contract. This turned out to be incorrect—the buyer had not secured finance, resulting in unnecessary delays, uncertainty, and a postponed settlement date. In contrast to the enthusiastic profile presented online, my experience did not reflect someone who “goes above and beyond” or demonstrates tireless commitment. While the property sold for the price I wanted, I did not feel the sale was handled proactively or with my best interests in mind. At times, it seemed the buyer received more attention and support than I did. I strongly encourage prospective vendors to ask clear, detailed questions about how buyer demand will be leveraged, how finance will be verified, and what safeguards will be in place should delays occur.

I have now both purchased and sold property through Mark Costello. When it came to selling my unit, it was a no brainer contacting Mark to be the selling agent. Still, I was blown away by the result. Sold well above asking price, multiple offers, and under contract after just 1 inspection. There were certainly bumps in the road (no fault of Mark or any of the iThink team). From tricky buyer requests, to bond cleaners who didn't show up and even taking care of my cats during inspections; nothing was too much of an ask. I would have been lost without Marks help, and certainly wouldn't have had such a smooth sale. If you want someone to take selling your home seriously, and who goes above and beyond every single time, make sure you call Mark.

We were very impressed with the service and professionalism of both Mark and Brooke, and would definitely recommend Ithink Realty for Property dealings. Office staff were also very friendly and helpful

Every house sold and bought with mark has been a breeze, no hassles, he handles everything straight away which always will make me do business with him. Thanks again on selling my property it’s great to find an agent that genuinely cares

A big thanks to Mark & Brooke for working so hard to get such an amazing outcome on the sale of our house. Mark was always available to talk when needed and made the whole process so seamless and stress free! Super happy with his efforts and professionalism.

Mark & Brooke were brilliant in all dealings with our Sale process. Very professional yet made us feel warmly welcome throughout each step. A seemless process with us being very happy with the end result. Thankyou Mark, Brooke & IThink Property Team.