Child and adolescent overweight and obesity remain major public health challenges in Australia and globally. Evidence‑based guidelines recommend family‑focused, multicomponent behaviour‑change interventions for managing overweight and obesity in young people.(1) Better Health Company (BHCo) delivers web‑based lifestyle programs to families across Australia and currently assesses outcomes using multiple surveys capturing anthropometry, dietary intake, physical activity, sedentary behaviour, sleep, confidence, knowledge, wellbeing and self‑esteem. However, administering numerous individual surveys imposes substantial burden on families and may limit completion rates. Although validated tools exist for single behaviour domains, there is limited evidence describing comprehensive, multicomponent tools suitable for assessing behaviour change in children.(2) This project aimed to examine the face validity of existing BHCo survey questions to inform development of a survey for caregivers to complete following programs. The survey was distributed to the Department of Nutrition, Dietetics and Food at Monash University (n = 86) and to health professionals involved in BHCo programs (n = 42). Existing BHCo questions (n = 179) were consolidated into 45 items based on repeated content and relevance to caregivers of children aged 6–14 years. Participants rated each item using a three‑point Likert scale (1 = exclude, 2 = neutral, 3 = include) indicating whether the question should be retained in a consolidated tool to assess lifestyle interventions. Consensus for inclusion was defined as a mean score ≥2. Additional questions captured participant experience, qualitative feedback and suggestions for further domains. The survey was administered via Monash Qualtrics and responses were anonymous. The survey opened on July 22, 2026 and will remain open for a month. Interim results are summarised here. Twenty-eight professionals commenced the survey (response rate = 22%) with n = 20 completing the survey (16%). The majority of participants were nutritionists or dietitians (n=21, 75%) who had 1-5 years (n = 7, 25%) of professional experience. Across the 45 items, 96% (n = 43) achieved consensus for inclusion. The items that did not achieve consensus were “Child participation in new sports” (mean = 1.86) and a table of statements regarding the child’s wellbeing (mean = 1.90). Quality of life (n = 12/28, 43%), family dynamics (n = 11/28, 39%) and caregiver intentions (n = 10/28, 36%) were the most commonly suggested additional domains to include. This survey has highlighted a strong consensus on items to be included in a multicomponent, behaviour change assessment tool. Participants recommended clearer, non‑judgemental wording and suggested combining physical activity questions to reduce survey length. They advised shifting toward items assessing children’s confidence and willingness to try new activities or foods. Findings from this project will inform subsequent research to assess the statistical validity of questions and evaluate acceptability of the final tool among caregivers participating in BHCo programs.