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Meet our Expert Cassie Mortimer

Q: How long have you been in the real estate industry and how did you come to join Colliers?
I started working in the real estate industry in 2002, after completing my HSC. Initially as an admin assistant at a valuation firm, which introduced me to the world of Commercial Valuations. I quickly saw the career prospects it could provide and commenced studies to become registered as a Valuer, achieving my CPV status in 2006. I commenced at Colliers in 2011, shortly after returning to Sydney from a few years working in Melbourne. Initially with the North Sydney office, and then transferring to the Sydney CBD team which I’ve been a part of ever since.

Q: How do you think you use your expertise to add value to clients? 
The experience and specialist knowledge I have of the Sydney CBD office market, teamed with high attention to detail and a strong interest in risk management issues is what ensures the success of my clients.

Q: What is the most fulfilling thing about your role? 
The interaction with my clients, both within Colliers and externally, is quite fulfilling. Especially after two years of lockdown!
I also really enjoy inspecting each of the assets that we value. Each asset is unique, and we are fortunate as Valuers to be able to see such a wide variety of real estate. From new builds that are shaping the city skyline, to second generation assets that are being revitalized and redeveloped, I’m loving watching everything evolve and change as new design and technology innovations are put into play.

Q: Can you think of an instruction you’ve worked on that you’re particularly proud of? What did you do to ensure its success?  
Most recently it would be working as part of a national team on behalf of Link REIT, assisting with their recent investment into the Investa Gateway Office Portfolio. The instruction was won off the back of a long-term relationship Colliers has with the client throughout the Asia Pacific Region. Relationships built on trust is what ensures success.

Q: What do you think the opportunity is for your clients' real estate strategies in the current environment?
After two years of low occupancy in the CBD, the biggest challenge now is in encouraging workers to return to the office in a meaningful way. This provides an opportunity for clients to really look at their portfolios and see how the spaces within each building can be revitalised or presented in ways that enhance interaction and collaboration, and ultimately provide a safe work environment.

On a larger scale, clients real estate strategies will need to be focussed on ESG (Environmental, Social, Governance) impacts and performance, as the importance / relevance of such factors is only growing, whether it be at an individual, business, State or National level. Seeking advice from the right experts that they can trust will help them along the way to refining these strategies, identifying opportunities, and realising value

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Cassandra Mortimer

Director, Office | Valuation & Advisory Services


Provision of valuation and consultancy advice for Institutional grade commercial assets within the Sydney CBD for internal / statutory reporting and registered first mortgage purposes.

Key clients include Mirvac, Super Investment Management (REST), Brookfield, Charter Hall, Dexus, Lendlease, ISPT and LaSalle. 

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