ABOUT SIMON
For more than 30 years, Simon Guilfoyle has lived, worked and invested through the major shifts that have shaped the Australian property landscape. His long term perspective allows him to recognise patterns, anticipate buyer behaviour and guide clients with a level of confidence that only comes from experience. He understands how different economic periods influence demand, pricing and negotiation. This lived experience forms the foundation of Guilfoyle Realty’s calm, evidence based approach.
Simon’s record on the Sunshine Coast spans decades, not cycles. He began his real estate career in the mid-1990s on the Gold Coast whilst at Griffith University. In 1999 he was approached by the renowned private developer, the Juniper Development Group, and in 2004 founded G1 Property Mooloolaba — a name he created with deliberate intent. G1 stands for GUILFOYLE 1, modelled on the Formula 1 philosophy of operating at the absolute pinnacle of precision, performance and competitive excellence within a boutique, non-volume practice. Not the biggest. The best...which he built and operated for 20 years, operating across two separately licensed offices, each carrying its own trust account and compliance obligations under Queensland property law — a level of independent operational scale that few boutique principals in this market have ever achieved. Across that period he delivered benchmark sales on Parkyn Parade, River Esplanade, Mooloolaba Esplanade and First Avenue — including the $70,000,000+ sellout of Sea Pearl and its $11,000,000+ penthouse, the $36,000,000+ Alpha on Duporth Avenue, the $35,000,000 First Light development on First Avenue, 115 Mooloolah Drive at $6,450,000, and 2/63 River Esplanade at $7,140,000, among many others.G1 Property was a fully integrated boutique operation — combining permanent residential rentals, holiday and short-stay management, commercial leasing and sales, residential prestige sales, and new project marketing within a single practice focused exclusively on the Mooloolaba precinct. Each division reinforced the others. Rental management produced deep knowledge of asset performance and tenant quality. Commercial holdings produced relationships with business owners and investors. New project marketing produced early access to off-the-plan stock and developer relationships that few boutique principals ever build. Sales benefited from all of it. That integrated model was not replicated by competitors. It was the operational spine of G1 Property for twenty years, and the intelligence it produced — about which assets performed, which precincts matured first, which buyers returned and why — is the foundation on which the GUILFOYLE advisory standard is built today.
Simon’s own conviction runs deeper than agency. He was a Sea Pearl owner himself, and his resale of his own apartment set the building’s first resale record — a benchmark Sea Pearl has followed ever since. He also originated and held the Development Approval for First Light, today one of Mooloolaba’s most successful resale buildings. Simon has never advised from the outside of the water looking in. As an owner, he has held Myoora Court, Minyama — canal waterfront flowing directly off the Mooloolah River corridor. Sirocco Resort, Mooloolaba Esplanade — absolute beachfront on the Mooloolaba foreshore. And his current residence at Coorumbong Close, Mooloolaba — canal waterfront off the Mooloolah River corridor. Across three decades, when Simon has owned, he has owned on the water — not near it.
His ownership extends beyond residential waterfront. Simon has also held commercial property on Mooloolaba Esplanade, at the corner of Parkyn Parade and River Esplanade, and on First Avenue — the three most significant commercial addresses in the Mooloolaba precinct. He has not simply sold this market for thirty years. He has been a capital stakeholder within it across every asset class it produces. This is not a claim. It is a title record. It can be checked.
One street back from the water Margate, Redcliffe. Simon was three years old. The family home sat one street back from the beach, next door to his great grandmother. He got out and went to the water.
He has not lived far from it since.
The same peninsula produced the second half of the foundation. A product of Frawley College, Redcliffe, Simon was awarded Australian Schoolboy rugby union honours — one of the most competitive selections in the country at that level. Elite training, representative pressure, and a standard of excellence that a team demands and a selectors' panel confirms.
That foundation became the template for everything that followed. The qualities that define the GUILFOYLE standard today — calm under pressure, preparation before performance, a refusal to cut corners when the standard matters — were built on a rugby field and a stretch of bayside water long before they were applied to a prestige property campaign.
Redcliffe then was a modest bayside town at the end of a bridge. Today it sits inside greater Brisbane. Simon has watched one coastal community absorbed into a city once already, from the inside — which is how he reads the Sunshine Coast now, with an airport carrying international capacity, a university, a tertiary health precinct, a subsea cable landing and committed 2032 infrastructure. Noosa is a completed destination. The Sunshine Coast is a city forming on the water. Absolute waterfront inside a city still being built is a materially scarcer asset than waterfront in a town that is finished.


Simon has bought, sold, developed and held property across strong markets, soft markets and everything in between. He has guided clients through periods of confidence and uncertainty, always focusing on clarity, timing and informed decision making.
His approach is shaped by decades of working with high net worth families, interstate buyers and long term local clients. He focuses on how people move, how capital moves and how the prestige market behaves in real conditions rather than headlines.
Clients value Simon for his ability to read the market with perspective. He understands how to position prestige homes, when to introduce them and how to create conditions that maximise interest and outcomes.
His advisory approach includes understanding the phase of the market, identifying the right audience and applying negotiation strategies shaped by real experience. This gives clients a clear advantage when selling or purchasing significant assets.
Above all, Simon provides practical guidance. He offers considered advice, clear expectations and steady leadership from the first discussion through to settlement.
Between 2022 and February 2026, Simon stepped back from public real estate practice during a significant period of personal and professional transition, which included a contractual restraint of trade. He used that time to broaden his commercial experience internationally, including time in Dubai, before returning to the Sunshine Coast to establish Guilfoyle Realty following the expiry of the restraint in February 2026.
That period did not diminish his commitment to clients, if anything, it sharpened his perspective, strengthened his commercial insight, and reinforced the energy and passion that have defined his career for more than three decades.
POSITIONING
Prestige outcomes are rarely about timing luck. They come from preparation, strong relationships and a clear understanding of how the market behaves over time. Simon applies this philosophy to every campaign.
His clients choose him for insight, not just transactions. They value his judgement, his experience across changing conditions and his ability to create calm, strategic pathways toward the right result.

