Abstract Background The social care system is currently under enormous pressure leading to delays in home care provision and often unnecessarily prolonged hospital stays for frail, older people. The risks of prolonged hospital admissions for frail older people are well-recognised. The aim of this study therefore was to examine the rate of hospital-associated complications (HAC) amongst older inpatients who are otherwise medically optimised for discharge but are awaiting home care to facilitate discharge home. Methods Electronic medical records of patients ≥65 years with delayed transfer of care (DTOC) while awaiting provision of home care provision were examined for incidence of delirium, falls and infection. A smaller cohort of current inpatients (n=14) awaiting home care were interviewed with focus on quality-of-life (CASP-19), loneliness (UCLA Scale) and depressive symptoms (CES-D). Results 59% (57/97) of patients (median 82 years, 60% female, median Clinical Frailty Scale 6) developed a HAC (delirium, fall or infection) while considered medically optimised for discharge. Logistic regression models demonstrated that for every additional day spent awaiting home care, the likelihood of a HAC increased by 4% (Adjusted Odds Ratio 1.04 (95% CI 1.00 – 1.08; p=0.027; z=2.21). Almost half of interview respondents reported that quality-of-life had declined while discharge home was delayed, while over 1/3 (5/14) met criteria for clinically significant depressive symptoms (CES-D-10 ≥10). Conclusion Almost 60% of frail, older inpatients who are medically optimised have a HAC while awaiting home care provision, with the likelihood increasing significantly for every additional day in hospital awaiting care. Long delays to home care package provision are having a hugely detrimental impact on the health of frail, older people in hospital. While addressing the crisis in social care is challenging, interventions to tackle this deficit in home care provision are required urgently.