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Essential Requirements for Building an ADU: A Quick Guide

Building an Accessory Dwelling Unit (ADU) is a great way to expand your living space, generate rental income, and increase your property’s value. However, it's important to understand the requirements involved. This guide outlines the key steps and regulations you need to know, and how EG Modern Construction can help you navigate them.


1. Zoning Regulations


Zoning regulations determine where ADUs can be built and under what conditions:

  • Permissible Zones: ADUs are generally allowed in residential zones. Check with your local planning department to confirm.

  • Lot Size and Coverage: Some areas have minimum lot sizes and limits on how much of the lot can be covered by buildings.

  • Setbacks: Typically, ADUs must be a certain distance from property lines—often 4 feet from the sides and rear.


2. Building Codes


Building codes ensure ADUs are safe and habitable:

  • Structural Integrity: The ADU must meet local construction standards.

  • Plumbing and Electrical: Must comply with local codes for safety and efficiency.

  • Insulation and Ventilation: Required for energy efficiency and indoor air quality.

  • Fire Safety: Includes smoke detectors, fire-resistant materials, and safe exits.


3. Permitting Process


Obtaining permits is essential:

  • Submitting Plans: Detailed plans must be submitted to the local building department.

  • Paying Fees: Permit fees can vary but are necessary.

  • Inspections: Several inspections ensure the ADU meets all codes.


4. Size and Design Standards


ADU size and design must meet local standards:

  • Size Limits: Typically range from 600 to 1,200 square feet.

  • Height Restrictions: Usually between 16-25 feet.

  • Design Compatibility: Some areas require the ADU to match the main house’s style.


5. Parking Requirements


Parking rules aim to minimize street parking issues:

  • Off-Street Parking: Often, at least one off-street space is required, though this can be waived in some situations.

  • Shared Driveways: Sometimes acceptable.


6. Utility Connections


ADUs need proper utility connections:

  • Separate Meters: Some areas require separate meters for the ADU.

  • Utility Upgrades: Existing utilities might need to be upgraded to handle the extra load.


Conclusion

Building an ADU involves navigating various regulations and processes. By understanding these requirements, you can ensure your project runs smoothly and legally. EG Modern Construction specializes in guiding homeowners through every step of the ADU process. Our team will help you design, plan, and build an ADU that meets all local requirements and enhances your property’s value. Contact us today to learn how we can assist you in building your dream ADU.

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