About
DeCelisGreen is an independent property advisory helping clients make confident property decisions across buying, improving and selling throughout Mosman and Sydney’s Lower North Shore.
The best property decisions are rarely made in isolation. Our experience across buying, selling and property improvements brings a broader perspective to every engagement, ensuring advice is considered within the context of the market, the property and what you are ultimately working towards.
Every engagement begins by understanding what matters to you, your priorities, timing and goals. From there, we establish a clear direction and guide each stage with thoughtful advice, experienced negotiation and practical oversight.
Much of our work is conducted quietly. Through long-standing relationships and a strong local presence across Mosman and the Lower North Shore, we access opportunities before they reach the open market, coordinate property improvements and guide complex negotiations in a way that is discreet, measured and well informed.
We work with a small number of clients at any one time, ensuring every engagement receives focused attention, objective advice and direct involvement throughout the process.
Every client works directly with Elysia and Renée from beginning to end because consistency, continuity and long-term relationships are central to how we work.
Our Team
DeCelisGreen is led by Elysia McConkey and Renée Mostyn, both licensed real estate professionals whose combined experience spans buyer advocacy, vendor advisory, property improvements and renovation.
Together, they bring complementary skills and a shared philosophy: that the best outcomes come from thoughtful advice, careful planning and genuine advocacy.
With deep local knowledge of Mosman and Sydney’s Lower North Shore, they understand not only the streets, homes and market dynamics, but also how people choose to live in this unique part of Sydney. That perspective informs every recommendation, ensuring decisions are considered not only in terms of property, but how each home will support a client’s lifestyle, investment goals and future plans.
Working closely together across every engagement, Elysia and Renée provide strategic guidance, practical oversight and trusted representation from the initial conversation through to the final outcome.
Elysia McConkey
Elysia brings a perceptive and considered approach to property advisory, shaped by her deep connection to the Lower North Shore, a background in fashion and design, community advocacy and an intuitive understanding of what makes a home right for each client.
She is passionate about helping clients navigate significant property decisions with confidence, combining thoughtful strategy, experienced negotiation and genuine care throughout every stage of the journey. Her advice is grounded in both the finer details of a property and its broader potential, whether the objective is lifestyle, investment or preparing for the future.
Renée Mostyn
Renée’s approach to property advisory is calm, considered and quietly confident. Before establishing her property career, she gained extensive experience in the medical device and healthcare industry, where sharp negotiation, careful listening and managing complex decisions with clarity were fundamental to the role.
That same discipline extends to property. Her deep knowledge of the Lower North Shore enables her to guide buyers with confidence and insight, while a genuine passion for transforming properties means clients benefit from someone with firsthand experience of renovating and preparing homes for market.
She combines strategic thinking with a strong understanding of value and presentation, ensuring each engagement is carefully managed and every decision is measured and well executed, always focused on achieving the best possible outcome.
How We Help
Secure the right property through informed guidance, disciplined negotiation and experienced representation.
Prepare your property for market through thoughtful planning, trusted coordination and independent advice.
Navigate the selling process with objective guidance, strategic oversight and experienced negotiation.
Improve your property with strategic planning, experienced project management and practical oversight.