A historically designated home in the City of San Diego deserves a solar-plus-battery design that considers its architectural features from the beginning. For an SDG&E customer exploring a qualifying no-upfront-cost PPA, early historical review can help turn an attractive preliminary layout into a proposal that reflects the property and its approval requirements.
Confirm the property's status before finalizing the layout
The City's Designated Historical Resource Review bulletin covers individually designated resources, properties within adopted historic districts, and properties eligible for or listed in the California or National Registers. It says review can apply before alterations that would otherwise not require a permit.
An older home is not automatically a designated resource. The City's Historic Preservation Planning page describes a separate review responsibility for parcels with structures 45 years or older outside identified exempt areas. Ask staff which process applies to your address and proposed work.
These are City of San Diego procedures. Confirm jurisdiction rather than assuming a San Diego mailing address places a property under the City's permit process.
Show the complete solar-and-battery design
The City's May 2026 solar permitting bulletin identifies electrical permits for PV and battery systems and explains when structural work requires a Building or Combination Permit. It also directs projects involving designated resources or adopted historic districts to historical-review guidance when those building permits are required. Read it alongside the broader historical-resource bulletin, rather than treating a simple electrical application as an automatic exemption.
Before the installer settles on a layout, prepare a review package showing:
- Existing roof surfaces and the proposed panel locations.
- Battery, inverter and disconnect locations, including their attachments.
- Proposed conduit routes and any changes to visible exterior features.
- Photographs and sketches that distinguish existing conditions from new work.
The historical-review bulletin describes preliminary assistance, but makes clear that preliminary comments are not final approval. Ask staff how to obtain current guidance for your specific scope. A less visible equipment location is an option to discuss, not a guarantee of acceptance.
Update the energy forecast if the design changes
Suppose, as a hypothetical example, the design team moves panels from a front roof plane to a rear one after consultation. Ask for a revised production forecast reflecting the new orientation, shading and panel count. Do not carry the original energy estimate into the PPA comparison unchanged.
For a household on SDG&E's Solar Billing Plan, import and export values depend on timing. Have the proposal model the revised layout with the applicable utility and community-choice generation pricing, where relevant, plus the planned battery operation.
The Department of Energy explains that storage can shift solar energy to later hours but has energy and power limits and conversion losses. Confirm the intended backup circuits, reserve and compatible outage equipment. Rooftop layout approval does not establish a guaranteed outage duration or continuous solar recharge.
Make the PPA scope match the reviewed project
A qualifying no-upfront-cost PPA can help an eligible homeowner access solar without buying the system initially. Under the CPUC's PPA guidance, the provider owns the solar equipment and the homeowner pays for its production. Review the rate, any escalator, contract term, maintenance and transfer provisions, along with remaining utility charges. Electricity is not free and savings are not guaranteed.
Ask who pays for historical-review work, design revisions and any restoration work, and whether the battery and backup controls are included. Document how an approved design change affects equipment, projected production and payments.
Bring your property-status information and initial layout to a West Coast Alternatives consultation. Once plans are approved, our San Diego inspection preparation guide can help organize the next stage.