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ADU Electrical Wiring

Complete Electrical Systems for Accessory Dwelling Units

Accessory Dwelling Units (ADUs) require a complete electrical system that can support everything from lighting and outlets to appliances, HVAC, and daily living.

Benson Electric installs electrical systems for ADUs that are designed to operate safely, reliably, and efficiently—just like a full-sized home.

Whether you’re building a detached unit, converting a garage, or adding living space to your property, we provide electrical solutions tailored to your ADU and your overall property setup.

Electrical Systems for New ADUs

ADUs require a full electrical system from the ground up. This includes planning how power is delivered, where it’s needed, and how the system will support everyday use. We install electrical systems that are cleanly laid out, properly sized, and built for long-term performance.

This includes:

  • Full electrical wiring for ADUs
  • Installation of main panels or subpanels
  • Circuits for lighting, outlets, and appliances
  • Power for HVAC systems and equipment
  • Underground trenching and conduit installation for electrical runs
  • Integration with the main home’s electrical system

Every system is installed with attention to layout, accessibility, and future use.

Panel & Power Setup

One of the most important parts of an ADU project is determining how power will be supplied.

Depending on your property and electrical system, this may involve:

  • Installing a dedicated subpanel
  • Upgrading the main panel
  • Balancing electrical load between structures
  • Ensuring sufficient capacity for both the home and ADU
We evaluate your system and recommend the best setup to ensure reliable power without limitations.

Underground Electrical & Trenching

Complete Installation from Power Source to Structure

Many ADUs require power to be routed from the main home to a detached structure. This often involves underground electrical runs that must be installed properly to ensure safety and long-term reliability. Benson Electric provides trenching and underground electrical installation as part of our ADU services, allowing us to handle the entire scope without relying on multiple contractors.

This includes:

  • Trenching for underground electrical runs
  • Installation of conduit (raceways) for power distribution
  • Routing power from the main home to the ADU
  • Proper depth, protection, and code-compliant installation
This approach simplifies the process for homeowners and ensures the entire electrical system is installed as one complete, coordinated solution.
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Designed Around Your Property

Every property is different, and ADU electrical systems need to be planned accordingly.

We take into account:

  • Distance from the main home
  • Existing electrical capacity
  • Layout of the ADU
  • Future expansion plans
This ensures your ADU operates efficiently and integrates properly with your property.

Supporting Garage Conversions & Additions

Many ADUs are created by converting existing spaces or adding onto the property.

We provide electrical upgrades for:

  • Garage conversions
  • Backyard ADUs
  • Home additions and expansions
  • Multi-unit property upgrades
These projects require careful planning to ensure the electrical system supports the new space properly.
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Clean, Professional Installation

ADU electrical work involves both new installation and integration with existing systems.

Benson Electric performs installations with a focus on:

  • Clean, organized wiring
  • Proper routing and protection
  • Safe, code-compliant installation
  • Long-term reliability
Our goal is to deliver a system that is both functional and professionally installed.
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Preparing for Modern Living

ADUs often include the same electrical demands as a full home.

 We install systems that support:

  • Modern appliances and equipment
  • Energy-efficient systems
  • Smart home features
  • Future upgrades and expansions
This ensures your ADU is fully functional and ready for long-term use.

Built for Long-Term Performance

Your ADU is a long-term investment, and the electrical system should reflect that.

We install systems designed to perform reliably over time, helping you avoid issues and unnecessary upgrades in the future.

Ideal for Property Owners & Developers

ADU projects are often part of larger property improvements.

We work with:

  • Homeowners adding living space
  • Property owners increasing rental capacity
  • Developers building multi-unit properties
  • Investors improving property value
Our approach supports both individual projects and larger-scale developments.
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Our Process

Step 1
Consultation & Planning

We assess your electrical needs and create a tailored plan for your project.

Step 2
Approval & Build-out

We build the electrical system, secure city approval, and ensure it's up to code.

Step 3
Installation & Follow-up

We install the system and offer ongoing support for lasting satisfaction.

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What Clients Are Saying

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If you're planning an ADU or expanding your property, we’re here to help. Request a Quote to discuss your project and get the right electrical solution for your ADU.

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