At JT Allen Real Estate, we don’t just set the bar for success in Sydney’s Eastern Suburbs - we consistently break records. Renowned for excellence in sales and property management, our dynamic team combines local market expertise with global reach. Thanks to our strategic partnerships with overseas agents, we attract international buyers and provide unparalleled exposure for our clients. This unique advantage allows us to deliver unmatched outcomes, maximising property potential for sellers, investors, and developers alike.

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Joshua Allen
Joshua Allen
Managing Director

Joshua Allen, the founder and Director of JT Allen Real Estate, is passionate about his profession and has his finger on the pulse when it comes to adopting an outlook that accommodates a fluctuating market.

With over 12 years experience in the Eastern Suburbs real estate market, Josh started his career working for a large property developer and proceeded to work for one of the most prestigious agencies in the Eastern Suburbs. The dream of JT Allen Real Estate became a reality through Josh’s vision to break out of the mould of a franchised company and he could offer a personal approach that can only come from a bespoke agency.

Recognised as an established market leader, Josh's energetic and approachable manner relishes a reputation rooted in the community within which he has established and developed relationships. Josh is committed to communication, results focused and determined. He begins his day training hard, starting his day with an accomplishment that sets the tone for the rest of his day in achieving the goals of his clients and negotiating the best deal on their behalf.

Honesty, integrity and approachability are values which he strives to uphold and has instilled in the agents who fall under the illustrious JT Allen Real Estate umbrella.

Along with his team, Josh is dynamic, driven and always endeavours to deliver results.

Zac Morgan
Zac Morgan
Head of Property Management

With over 15 years of experience in the property management industry, Zac Morgan is a trusted leader known for his strategic insight, operational precision, and unwavering commitment to excellence. As Head of Property Management at JT Allen Real Estate, Zac leads a high-performing team that sets the benchmark for service and professionalism in Sydney’s competitive real estate landscape.

Zac’s career has been defined by his ability to anticipate challenges, streamline processes, and deliver tailored solutions that protect assets and foster long-term relationships. His deep understanding of tenancy legislation, conflict resolution, and NCAT proceedings ensures that both landlords and tenants receive expert guidance and support at every stage.

Having overseen the leasing and management of some of Australia’s most prestigious luxury properties, Zac brings a nuanced understanding of the easter suburbs and inner Sydney market and a refined approach to high-value asset management. His expertise extends to:

  • NCAT case preparation, advisory, and representation
  • Conflict resolution and stakeholder management
  • Tenancy legislation and compliance
  • Landlord insurance claims and risk mitigation
  • Strategic leasing campaigns and market positioning

Zac is passionate about elevating industry standards and empowering his team to lead with knowledge, integrity, and a customer-first mindset. For Zac, exceptional property management is not just about maintaining properties; it’s about building trust, delivering value, and creating seamless experiences for all parties involved.

Diana Sentas
Diana Sentas
Accounts Manager

A vital part of the JT Allen family, Diana has worked in Real Estate for over 20 years and has unparalleled knowledge of the industry and trust accounting.

Her passion for professional and accurate financial management for the Sales and Project Management teams means our clients and suppliers can rest assured that all accounts are precise and up to date.

Responsible for overseeing trust accounts and ensuring that all accounting processes related to trust are completed in accordance with statutory requirements, Diana takes her role seriously, but always with an upbeat attitude and always ready for a laugh.

As well as being skilled with numbers, Dee’s generosity and willingness to help everyone in the office makes her a valuable and respected member of the team.

Nicole Sirtes
Nicole Sirtes
Senior Property Manager

Starting as a trainee in her family’s real estate business at just 15, Nicole has been a property manager for over 30 years. Eastern Suburbs real estate has become her speciality, profession and passion.

Her role is normally one of client liaison, giving both landlords and tenants 5-star service and redefining their Real Estate Agent experience. With background studies in finance, business and valuation at UTS and a lifetime of dedicated property management experience, she excels and focuses on relationship building and values the strong rewards and trusting bonds formed with her clients.

“I love working with the dedicated and fun team at JT Allen and feel that clients are in the best possible hands with this hard-working, high energy ambitious team.” - Nicole

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02 9362 8507

418 New South Head Rd,

Double Bay, 2028

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    © Copyright 2025 JT Allen Real Estate All rights reserved.

        Get the latest property listings, sales insights and expert tips delivered straight to your inbox.

        02 9362 8507

        418 New South Head Rd,

        Double Bay, 2028

        LinkedInInstagram

        © Copyright 2025
        JT Allen Real Estate All rights reserved.