Local valuers you can trust.

Tim, Nigel and Roger are the partners and driving force of Inval.

They know their local markets intimately and each has decades of experience running their own businesses as well as working for large corporations.

Principal Partners Tim Wilkin, Nigel Gibbins and Roger Eberhard collectively have more than 80 years’ experience in property valuations.

Our Team

Inval | Tim Wilkin

Tim Wilkin, AAPI

Tim has extensive valuation, retail property development and leasing experience with organisations including Raine & Horne, Colliers International, Woolworths and Wesfarmers. Tim also held interests in his own wine business and a Hotel, keeping him connected to real time industry issues faced by today’s business owners within these sectors.

An Associate Member of the Australian Property Institute, Tim has over 20 years’ experience across South Australia, Northern Territory and Queensland. During that time, his valuation assignments included the following property classes:

  • Agricultural (horticultural vineyards and wineries, mango and dry land farming)
  • Rural residential
  • Residential subdivisions
  • Industrial developments
  • Rental determinations
  • Commercial office
  • Retail developments
  • Residential property

While Tim’s experience is extensive, his focus and forte is on servicing the Australian wine industry with property advice.

Inval | Nigel Gibbins

Nigel Gibbins, AAPI

With hands-on experience as a part-owner of a 3,000-hectare broad-acre farm in the Mallee, Nigel has broad and practical knowledge of agribusiness and the rural economy. After completing his studies at UniSA, his highly successful career in valuation has seen him operate in diverse territories from Adelaide, the Barossa and Clare Valleys to Sunraysia, Deniliquin, Wagga Wagga and Cairns.

A property valuer with over 20 years’ experience and an Associate Member of the Australian Property Institute, Nigel’s valuation assignments included the following property classes:

  • Agricultural (vineyards & wineries, table grapes, citrus, market gardens, pastoral stations and dry land farming operations)
  • Country hotels and motels
  • Schools
  • Prestige ocean-front residential properties
  • Murray River-fronting properties
  • Rental determinations
  • Commercial and industrial
  • Residential
  • Residential englobo sites
  • Plant and equipment

While Nigel has operated across the entire state of South Australia, his focus is on servicing the needs of the Barossa, Riverland, Mid North and Northern Suburbs of Adelaide.

Inval | Roger Eberhart

Roger Eberhard, AAPI

Son of a Mid North farmer, Roger completed his Degree in Agricultural Science at the University of Adelaide before beginning his career at the Commonwealth Development Bank in Naracoorte. A well-known figure in the South-East, he worked for local company
Neil Ottoson Real Estate and gained his Diploma in Valuations at the Royal Melbourne Institute of Technology before starting his own practice, Eberhard Valuations in 1997. Roger later sold the business to local stock agency Thomas DeGaris & Clarkson, working for them until 2017.

An Associate Member of the Australian Property Institute with over 40 years’ experience, Roger’s valuation assignments have included the following property classes:

  • Agricultural (vineyards and wineries, grazing, irrigation, dairy farms and dry land farming operations)
  • Motels
  • Caravan parks
  • Prestige ocean-front residential properties
  • Rental determinations
  • Commercial and industrial
  • Residential
  • Residential subdivisions

Located in Naracoorte and considered a local authority on property valuation, not surprisingly, Roger’s focus in on servicing the needs and all property types in the Limestone Coast region.