How much do service charges affect net rental yield?

This is one of the most overlooked items among new investors.
Service charges directly reduce net yield and can completely change the ranking between projects.
Before buying, ask for a clear view of the annual charges and how they are calculated, and use official tools such as the Service Charge Index where possible. High charges do not automatically mean better investment quality.
The real question is whether rental demand and pricing power justify that cost structure in the first place.