Photo of Jon Ryan

Jonathan W Ryan



Has extensive experience in major commercial management with particular skills in refurbishment and services upgrades. A Registered Valuer, Jon provides property management advice to a range of institutions and private investors.

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William J Rees


AAPI, Certified Practising Valuer

A Registered Valuer, Bill provides advice about property users, property legislation and the economics of buying, building, managing, enhancing and selling. A Licensed Agent, Bill acts on a wide range of transaction based assignments.

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Suzi Trajcevski

Senior Executive – Property Management and Sales & Leasing

Suzi is a Licensed Real Estate Agent and has been with Henderson & Horning for over 15 years. Suzi has extensive experience in all aspects of the business including agency, property management, marketing, office administration and accounts.

Photo of William Mulvihill

William Mulvihill

Senior Executive – Sales & Leasing

Initially qualified and practised as a Chartered Surveyor in Dublin, Ireland. Will immigrated to Australia in 1994 and has specialised in commercial sales, leasing and investment sales.

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Trevor J Berwick

Senior Property Manager


Trevor trained as a Chartered Surveyor with British Rail managing a diverse property portfolio. Trevor manages a range of Commercial and retail investments throughout Sydney.

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Mark Humphrey

Senior Property Manager

Mark joined Henderson & Horning as a Senior Commercial Property Manager and manages a range of commercial and retail investments throughout Sydney.

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Brendan Hay

Senior Property Manager

A property manager since 1990, Brendan has broad experience over a range of property types. More recently Brendan has specialised in Retail and Facilities Management.

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Kristy Vo

Trust Account Manager

Kristy joined Henderson & Horning in 2012 to manage the Trust account and provides financial and account administration support to the entire team.

Photo of Melinda Ryan

Melinda Ryan

Administration/Accounts Support

Melinda supports the entire team and works closely with the Account Manager.