An autism assessment for children in Sydney is a comprehensive diagnostic evaluation conducted by a clinical psychologist using gold-standard tools including the ADOS-2 (Autism Diagnostic Observation Schedule) and the ADI-R (Autism Diagnostic Interview-Revised). The assessment typically spans 6 to 10 hours across multiple sessions, produces a detailed diagnostic report, and costs between $2,000 and $4,000. Medicare rebates apply with a GP Mental Health Treatment Plan. At Anna Cohen and Co, our clinical psychologists have assessed hundreds of children for autism across three Sydney locations over three decades of practice.

Why Early Assessment Matters

In my 30 years of clinical work with children and families, one pattern has remained consistent: the earlier a child receives an accurate autism diagnosis, the sooner they can access the specific support that makes a genuine difference to their development. This is not about rushing to a label. An autism assessment is about understanding your child’s unique neurodevelopmental profile so that their world, from home to school to friendships, can be shaped in ways that work for them rather than against them.

Signs That an Autism Assessment May Be Helpful

Every autistic child presents differently, which is precisely why a formal assessment matters more than a checklist. Parents often notice differences in social communication (limited eye contact, difficulty reading facial expressions, challenges with back-and-forth conversation, taking language literally), and restricted or repetitive behaviours (intense focus on specific topics, repetitive movements, strong need for routine, sensory sensitivities). Many children, particularly girls, learn to mask their autistic traits in social settings, appearing to cope at school but falling apart at home.

What Happens During an Autism Assessment

At Anna Cohen and Co, our autism assessments follow international best-practice guidelines. We begin with a thorough parent interview covering developmental history. We then administer the ADOS-2 (the international gold-standard observational assessment), the ADI-R (a comprehensive structured parent interview covering social interaction, communication and repetitive behaviours), and where appropriate a cognitive assessment (WISC-V or WPPSI-IV) and adaptive behaviour assessment (Vineland-3). The psychologist then writes a comprehensive diagnostic report and meets with you for a feedback session to go through the findings and discuss next steps.

Autism Assessment Cost in Sydney

A comprehensive autism assessment at Anna Cohen and Co costs approximately $2,000 to $4,000 in total (clinical sessions $215 to $450 each, plus the diagnostic report). Medicare rebates of $145.25 per session apply with a clinical psychologist (up to 10 sessions per year with a GP Mental Health Treatment Plan), and private health insurance rebates may also apply.

What Happens After the Diagnosis

A diagnosis is the beginning, not the end. Depending on your child’s profile, next steps might include an NDIS application (the diagnostic report is a key supporting document), speech and language therapy, occupational therapy for sensory processing, social skills programs, school support such as an Individualised Education Plan, and ongoing psychological support for the child and family.

Where to Get an Autism Assessment in Sydney

Anna Cohen and Co offers comprehensive autism assessments at three Sydney locations:

Book a consultation: Call 02 9555 1168 or visit annacohenandco.com.au/contact

About the Author

Dr Anna Cohen is a Senior Clinical Psychologist (AHPRA PSY1176554, Doc.Clin.Psych) with over 30 years of experience. She is the founder of Anna Cohen and Co and co-founder of Kids and Co Clinical Psychology, and the author of four published parenting books including Skilful Parent Happy Child.

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