We Employed O’Callaghan Building to fit out our new offices in Melbourne. Tim was always available to discuss our project and did everything in his power to ensure the project ran smoothly. We also found Tim’s team of tradesmen worked really well together, and with us. We were very happy with O’Callaghan Buildings overall approach and standard of workmanship.


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I am delighted with my second story extension. O’Callaghan Building have done a fabulous job with a tricky and challenging second floor add on to our federation house. We lived in the house throughout the process and found Tim and his staff to be courteous and considerate. I highly recommend O’Callaghan Building.

Jacqueline Brown


We approached O’Callaghan Building because of a great looking renovation that was happening locally.
Tim was easy to deal with from day one. He was honest and open about our ideas and the challenges of working with older properties (1930’s). Of course there were the usual changes during the build, but these were minor and Tim and his team were very accommodating. All of Tim’s staff were very polite, respectful of our space (we lived in the house during the renovations) and kept the site well maintained throughout.
We are very happy with the end result. The quality of the work is very good and we now have an extension that looks like it’s always been a part of the house – which is just what we wanted.
I would have no reservations in recommending O’Callaghan Building.

Richard Botto


We had O’Callaghan Building help design and deliver our three bathroom renovations last year. They were so professional, time effective and accommodating that we felt compelled to use them again for our latest renovation project, removing a 7.4m wall between our kitchen/dining and lounge thereby turning it into open plan living. Tim offered advice from the idea stage all the way through planning to presenting the final amazing space. This renovation has had a profoundly positive effect on our family way of life which has far exceeded our expectations.

Kim and Jason Stevens

Mt Clear