Hawthorne Undergrounding District

Hawthorne Underground Aerial Photo

Construction Updates

Check below for the most recent update on construction activities, detours, and more. 

Service Transfers

The current phase of the project involves connecting the existing utility infrastructure to the newly installed underground grid and transferring utility services at all properties within the district.  Contractors working for AT&T, Comcast, PG&E, and the Town of Tiburon are currently mobilized and performing this work.

Starting on 5/1/2023, the new underground grid will be fully energized and property owners* (see note below) and their electricians will be able to start scheduling service transfers at each property.  The service transfer dates for each property will need to be coordinated with the Service Lateral Coordinator.

For each service transfer, electric meters will need to be relocated by PG&E technicians.  The meter relocation will need to be coordinated with property owners and their electricians and scheduled ahead of time.  Property owners and electricians who do not coordinate their work with the Service Lateral Coordinator risk a property being left without electricity until the meter can be transferred.

The town has identified a window of approximately 30 days for property owners to transfer services from overhead to underground at each property to allow their contractors enough time to complete the required work.  Each property owner is requested to notify the Hawthorne Utility Underground District service lateral coordinator via phone or e-mail when their required work is complete.

A letter was mailed to all property owners within the Hawthorne Utility Undergrounding District on 5/16/2023 as a project update and reminder of their responsibility to finalize their service transfers.  A copy of the letter is available by clicking on this link.

Contact the Service Lateral Coordinator Jayni Allsep at hawthorneunderground@townoftiburon.org or via phone at 415-521-6788.

*Note: There are very few properties within the district that will receive specifically scheduled service transfers that require coordination with PG&E and the District.  Those property owners and their electricians will be independently notified by the Hawthorne Utility Underground District service lateral coordinator.  Additionally, properties where the utility connections were undergrounded prior to the formation of the district will be fully transferred by district utility providers and contractors.  These property owners will also be specifically and independently notified of when their service transfers will occur.

As soon as the district is notified that all service transfers are complete, all utilities (AT&T, Comcast, and PG&E) will be notified to return to the district area to begin to remove overhead lines, and poles and perform final restoration.

Updates and any further information regarding individual property service transfers and coordination will be provided to district property owners as soon as it is available.

Individual Service Lateral Coordination

A letter was mailed to all property owners within the Hawthorne Utility Undergrounding District as a reminder of their responsibility to install an individual service lateral and that completion of all laterals is required by July 16, 2022.  A copy of the letter is available by clicking on this link.

Each property within the Hawthorne Utility Undergrounding District currently receives their utility service either through an overhead or an underground connection.  One of the following three scenarios apply to each property within the district as part the individual service lateral installation process.

1. Property has an existing underground utility service - Individual service lateral was previously undergrounded as part of a new construction, remodel, or other upgrade. (Completion of a Residential Service Load Worksheet is not required.)

2. Property is reusing the existing electrical service panel at the same rated load amperage. (Completion of a Residential Service Load Worksheet is required.)

3. Property is upgrading or relocating the existing electrical service panel. (Completion of a Residential Service Load Worksheet is required.)

Property owners who were not undergrounded prior to this project and fall under scenario number two and three as listed above are required to have a licensed electrician complete a Residential Service Load Worksheet (Displays best in Adobe Acrobat Reader) and submit it to the Town of Tiburon Building Division for review.  Completed forms should be sent via e-mail to building@townoftiburon.org. The Building Division will review the Residential Service Load Worksheet and advise whether or not a electrical service panel upgrade is required.

As part of the individual service lateral installation for each property, two separate contractors may be required depending on the qualifications and license the contractor possesses.  Some contractors may have the qualifications and licensing to perform work on both the electrical service panel and install underground conduits, while others may only be able to perform a portion of the required work.

Once a property owner engages a contractor to install their individual service lateral, authorization needs to be granted before conduit installation begins.  Contact information for the contractor shall be sent to the Service Lateral Coordinator at hawthorneunderground@townoftiburon.org.  The coordinator will coordinate installation scheduling and both the property owner and contractor will receive an email to alert them when work on individual service laterals can be scheduled for each property.

Individual Service Lateral Questions or Concerns?  Check out the Individual Service Lateral Coordination Guide or contact the Service Lateral Coordinator Jayni Allsep at hawthorneunderground@townoftiburon.org or via phone at 415-521-6788.

Project Schedule

Below is a schedule of anticipated construction milestones, which is subject to change.

Schedule Infographic

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Stay Updated!

You can sign up to receive project email updates here. 

For more information, project FAQs are available here.

Questions about upcoming or current construction activities?
Call the project hotline at (415) 888-9229. 

Download or share the Project Contact Card. 

Funding & Costs

On January 15, 2021, the Town opened construction bids; they are within the District budget. The Town has received the final PG&E cost estimate and has since awarded the construction contract and issued the bond. 

Project Documents

Engineer's Report

Final Residential Service Lateral Plats

Plans & Specifications

Environmental Documents

Additional Information & Related Documents

Previous Neighborhood Meetings

Page Last Updated 5/16/2023