About Us

Experienced, Informed, Pragmatic, Accurate

CA Org

Leaders in Environmentally Sustainable Design

Ark Resources has been at the forefront of environmentally sustainable design since being established in 1999. We have extensive experience in all building types and have provided advice for buildings and developments of every scale, ranging from individual houses to several of Melbourne’s most significant residential and commercial projects.

We provide sustainability input at all stages of the property development cycle from concept design, through planning application, design development, construction, commissioning and post-occupancy.

We have expertise in the development of ESD frameworks and policies and have developed several highly regarded sustainability rating tools for all levels of Government.

We are proud to be a certified Climate Active Carbon Neutral Organisation

We seek to lead by example and encourage other businesses in the construction and property sectors to undertake carbon neutral certification and continually improve our industries environmental impact.

To further demonstrate our commitment to tackling the climate crisis head-on, we have become a CitySwitch Green Office signatory, taken Victoria’s TAKE2 Climate Change Pledge and along with other engineers declared a Climate and Biodiversity Emergency.

To view our public disclosure statement and for more information please follow the link.


We’re always interested in hearing from talented individuals who’d like to join our team – please contact us if you believe you can make a difference.

Our Team



 Jan Talacko

Jan Talacko established Ark Resources in 1999 when ESD was still in its infancy as a concept.

He has led numerous reviews of environmental performance of development projects for clients in both the private and public sectors and is thoroughly familiar with ESD outcomes from all types of building and development projects.

He regularly appears as an expert ESD witness on sustainable design issues at VCAT and Planning Panels.

 Margaret Turner
Thermal Performance Assessor

 Broderick Jacobs
ESD Engineer

 Mike Rainbow
Associate Principal

Mike Rainbow is a chartered building services engineer, WELL accredited professional and ESD specialist with extensive local and international experience. Over the last couple of decades he has played a leading design role on a wide range of ESD projects in Australia and internationally, including a variety of exemplar schemes. He has particular experience in net-zero design, associated building physics and passive design initiatives.

Leonie Dixon

Senior ESD Consultant

James Weaver

ESD Engineer

David Canciello
Senior Thermal Performance Assessor

Daniel O’Loughlin
ESD Engineer

 Felipe Alves De Paula
ESD Engineer

 Charlie Hosking
Accounts & Administration