Adding an additional bedroom can significantly increase a home's value, with estimates ranging from $30,000 to $50,000 depending on various factors such as location, the current number of bedrooms, and market demand. The return on investment (ROI) typically ranges from 50% to 75%, meaning if you spend $25,000, you might recoup $13,250 to $18,750 upon sale. The added value is highly location-specific; urban areas often see more significant increases than rural ones. It's also crucial to consider how the new bedroom aligns with neighborhood norms and the overall home layout. Over-improving can lead to diminishing returns, so balance is key. Consulting with a local real estate agent or appraiser can provide tailored insights.