ADU Utilities: Avoid Costly Surprises

Utility planning is one of the most overlooked steps when designing an Accessory Dwelling Unit. Electrical capacity, sewer connections, water supply, and potential requirements for separate meters can significantly affect construction costs and project timelines. Many homeowners begin designing an ADU without realizing that existing infrastructure may require upgrades before the unit can be approved.

In this video, HB Design & Engineering explains why early utility planning is critical for a successful ADU project. You’ll learn how engineers evaluate existing utility systems, identify potential capacity limitations, and coordinate with local requirements during the permitting process. Addressing these factors early helps prevent delays, avoid unexpected expenses, and ensures the ADU design is fully prepared for building permit approval.