For a City of San Diego home, a solar proposal that requires structural modifications to support the panels needs a different permit discussion from a straightforward rooftop installation. Ask the provider to identify that work before describing the project as ready for the city's self-issued rooftop permit route.
This guide addresses City of San Diego permitting for an SDG&E-connected home, using official sources checked October 30, 2026. A San Diego mailing address alone does not establish city jurisdiction.
Identify structural work in the proposed scope
The city's Information Bulletin 301, dated May 2026, says a Combination Building Permit is required when structural modifications to an existing single-family, duplex or townhouse residence are needed to support the PV system or photovoltaic shingles. In that situation, a separate Electrical Permit is not required.
The bulletin also specifies who may stamp and sign structural calculations and plans: a California-registered architect, civil engineer or structural engineer. Ask the project team who is responsible for that assessment and documentation.
This is not a conclusion that your roof needs reinforcement. That requires a property-specific evaluation. Roof-covering age, visible condition and structural capacity are different questions; a new-looking roof does not answer all of them.
Confirm the appropriate permit route
San Diego's residential rooftop PV permit page describes a self-issued route for qualifying projects. Its conditions include no required structural review and no work requiring a Combination Building Permit, such as roof-structure modifications or a new structure. Other criteria also apply.
If structural work is identified, ask the contractor to confirm the correct application rather than assuming the simpler route still applies. A different review path is a planning issue to resolve, not evidence that solar is unsuitable for the home.
Put the engineering and construction scope in writing
Our suggested questions for the proposal review are:
- Has the structural assessment been completed, or is it still an assumption?
- Who supplies any necessary calculations, drawings and construction work?
- Are those services included in the quoted offer or priced separately?
- How would a design change affect the layout, production forecast and schedule?
- Which permit route has the project team confirmed for the final scope?
For a hypothetical example, a preliminary layout might fit the roof area, while a later assessment identifies support work. Ask for an updated scope and payment explanation before treating the preliminary price and installation date as final. No reinforcement cost or review duration is assumed here.
Our roof-readiness checklist covers the separate questions of roof condition, replacement timing and future removal of panels.
Coordinate the PPA, utility and backup plan
A qualifying no-upfront solar-plus-battery PPA can give eligible homeowners access to equipment without buying it outright. Confirm whether any required structural work fits that offer. The CPUC solar guide explains provider ownership and ongoing electricity payments. Review qualification, rate, escalator, term, battery fees, maintenance and transfer terms, plus remaining utility charges. No upfront purchase does not mean every property improvement is included, free electricity or guaranteed savings.
Keep the city's permit process coordinated with SDG&E's interconnection process. Ask the provider to track both sets of requirements for the actual design.
Finally, record the battery's supported circuits and operating limits. General battery guidance explains that available charge, loads and solar conditions affect backup duration. Ordinary grid-tied solar alone generally cannot power the home during an outage; compatible backup equipment is necessary.
Bring the proposed layout, known roof records and backup priorities to a West Coast Alternatives consultation to begin with a clearer project scope.