I’m Kristy McMillan, the founder of Cornerstone Commercial — a boutique agency specialising in commercial property sales and leasing across South East Queensland. My background in commercial property development means I bring more than just market knowledge to the table — I understand how assets function from the ground up.

Before launching Cornerstone, I spent 8 years in the commercial property and development industry, gaining hands-on experience in asset positioning, leasing strategy, and tenant negotiations. That development lens still shapes how I approach every campaign. I don’t just list properties — I help owners prepare, present and position their asset for the right outcome, whether that’s securing a long-term tenant or achieving a strong sale result.

My clients work directly with me, not handed off to a junior or lost in a large team. I’m genuinely invested in their success and offer straight-talking advice, clear communication, and a business owner’s attention to detail. Whether it’s a retail strip, freestanding industrial, or office space, I approach each asset with care and strategy — like it was my own.

Based in Caboolture and servicing the wider Moreton Bay region and beyond, I’ve also worked with select clients as far north as Mackay. My focus is on building long-term relationships and delivering practical, grounded results — no fluff, just experience, reliability, and a tailored approach to every deal.

If you’re looking for a commercial agent who combines real-world property insight with a hands-on, boutique service — let’s talk.