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About Us

Perth Quantity Surveyors

NKA is a fully qualified Quantity Surveying /Cost Consultancy Company with industry qualifications and experience in the construction industry. We provide full range of quantity surveying services and we can assist you with all of your construction cost advice/needs and also your depreciation schedule needs for your investment properties.

We are full members of the Australian Institute of Quantity Surveyors and registered Tax Agent for the preparation of Tax Depreciation Schedule.

NKA is focused on providing high-quality service and customer satisfaction – We have a team of Quantity Surveyors for any urgent work requirements for supporting clients, consultants, and contractors with a reasonable or negotiated fee.

Nilan Kellapatha, the proprietor of NKA is a fully qualified Quantity Surveyor with 30 years of experience in Construction and Cost Management. Nilan holds a bachelor’s degree in Quantity Surveying (Honours), Post Graduate Diploma in Construction Project Management and Diploma in Engineering.

Over the years, Nilan has worked and gained experience assisting clients and contractors in the following major projects;

  • BHP South Flank project – Quantity take-off in various stages of the project
  • BHP South Flank project – short-term contracts principal duties for SMP package
  • BHP Jinidi project – NPI estimating services
  • BHP Hay Point Coal Terminal – Ship Loader and Berth Replacement Project – Estimate review
  • BHP Port Availability Improvement Project – Preparation of tender estimate
  • Rio Tinto West Angelas Deposit D North Haul Road project – Independent claim assessment
  • Rio Tinto Cape Lambert Port B – Electrical work take-off
  • Rio Tinto Western Turner Syncline – Preparation of Progress Claims
  • FMG Solomon Power Station – Piping re-measure from AFC drawings
  • FMG North Star project – Preparation of preliminary cost estimate
  • Tianqi Lithium Processing Plant in Kwinana – Piping take-off and contract administration
  • Bluewaters Power Station – Subcontract management
  • Roy Hill Ultrafine Iron Recovery Project – Piping take-off and progress claim assessment
  • Roy Hill ROM 3 SMP&EI package – Independent assessment on contractor’s variations
  • Gorgon project civil works – Preparation of variation claims
  • North link – Preparation of sub-contractor claims
  • Mandurah Forum Expansion project – Preparation of sub-contractor progress claims
  • Tellus Blue Bush facility – Preparation of scoping phase capital cost estimate
  • BSWA Nuns Monastery Building project at Giggigunnap- Quantity Surveying services
  • Alcoa Haul Roads – Preparation of cost estimate
  • Main Roads – Estimating services for various projects
  • Water Corporation – Estimating services for various projects
  • Various Commercial sector projects
  • AIQS
    Tax Parishioners