Is That Solar Company Trustworthy? 10 Checks Before You Let Anyone on Your Roof

Before signing a solar contract, confirm the legal identity of the company responsible for the installation. A familiar brand name, online rating or salesperson badge is not a substitute for checking the contractor license and the entity named in your agreement.

Use California’s official contractor license lookup to verify status and the relevant classification, then ask who will obtain permits, perform electrical work and handle warranty service. Check the exact contracting entity rather than assuming a marketing company and installer are the same business.

Quick answer: how can I verify a California solar company?

Start with records the company does not control. Match the exact legal business name and active license in the CSLB lookup, verify the Home Improvement Salesperson when registration is required, and get comparable written bids from at least three contractors. Then reconcile the cash price with the financed principal and read the completed Solar Energy System Disclosure Document and every contract attachment before signing.

Reviews can reveal service patterns, but they do not prove licensing, forecast accuracy, financial stability or future performance. A company that deserves consideration should give you time to verify its identity, scope, pricing, utility assumptions, warranties and cancellation terms without pressuring you to decide during the first visit.

Check 1: Verify the actual contracting company with CSLB

Ask for the exact business name and California contractor license number that will appear on the installation agreement. Search it yourself using the Contractors State License Board's official lookup. Check whether the license is active, whether the classification covers the planned scope, and whether the public record shows bond, workers' compensation or complaint disclosures. Some solar work may be performed under different classifications depending on the contractor and scope.

If the salesperson names a subcontractor or a separate electrical business, ask which company is responsible for design, permitting, workmanship and warranty service. A familiar trade name or storefront is not enough. Match the license record's legal business name and status to the entity on the agreement, and confirm who will actually perform the roofing and electrical work. A marketing brand, referral platform or salesperson is not automatically the licensed installation contractor.

Check 2: Verify the salesperson and the sales claims

California's CSLB license lookup can also be used to verify Home Improvement Salesperson registrations. CSLB says solar sales representatives generally must be registered, subject to limited exceptions. Save written claims about pricing, incentives, system output and utility savings rather than relying on a verbal explanation.

Be wary of someone claiming to be 'from the state,' your utility, or a government solar program while actually working for a private contractor. Confirm any claimed affiliation using the agency's own published contact information, not a phone number given by the salesperson.

Check 3: Get the full cash price before discussing the loan

A salesperson may lead with 'just $129 a month' or 'zero down.' Neither reveals the total price or the borrowing cost. Ask for a cash bid, complete financed principal, APR, term, loan or dealer fees, repayment changes and total scheduled payments. If the company cannot clearly reconcile the cash price with the financed price, stop the process until it can.

The CFPB has documented solar financing practices that can conceal substantial fees in loan principal and depend on large voluntary prepayments. Do not sign a loan application on the assumption that a future tax credit will make an otherwise unaffordable payment work.

Check 4: Catch incentives that are no longer valid

As of 2026, the federal Residential Clean Energy Credit under Section 25D is not available for property placed in service after December 31, 2025, according to IRS guidance. A current quote that automatically discounts the price by a federal 30% homeowner credit is a serious warning sign. Ask the salesperson to correct the proposal and explain where its incentive assumptions came from.

State, local, utility or income-qualified programs may have different requirements. Confirm program availability and funding directly with the administrator before counting any grant, rebate or bill credit in your household budget.

Check 5: Demand a roof-specific design and a defensible forecast

A reliable installer should inspect or credibly assess shade, orientation, roof age, usable area and electrical capacity before treating an estimate as final. Ask for the modeled annual production in kWh, the installed capacity in kW, site-specific shade and orientation assumptions, and the exact utility tariff used to calculate the remaining bill. Higher-wattage panels do not automatically mean fewer panels or better economics without comparing total capacity, usable roof area and production.

Promises such as 'you'll never pay an electric bill again' are expressly flagged in California consumer-protection guidance. Remaining utility charges, nighttime electricity purchases and future usage can all matter. A responsible proposal separates self-consumed solar energy, exports, grid imports and fixed charges, and shows a lower-production scenario instead of presenting a single guaranteed savings figure.

Check 6: Ask what is included—and excluded—in writing

Get an itemized scope identifying panels, inverters, batteries if offered, panel or service upgrades, roofing work, plans, permitting, inspections, utility interconnection and commissioning. Ask how change orders are approved and who pays if the utility or building department requires additional work.

Review the completed Solar Energy System Disclosure Document and all contract attachments. California requires the disclosure to address total costs, anticipated savings, estimate assumptions and financing implications. Do not accept 'standard installation included' when a roof or electrical condition could create a costly exclusion.

Check 7: Separate equipment warranties from labor and workmanship promises

Panel and inverter manufacturers may offer equipment warranties while the installation company separately promises workmanship coverage. These protections can have different exclusions, claim processes, transfer rules and labor provisions. Ask who comes to your home, who pays for diagnosis and access, and what happens if the original installer closes.

Request the names of the parties responsible for monitoring, replacement equipment and repairs. Save warranties, serial numbers, inspection records and permission-to-operate documents before a problem occurs.

Check 8: Look for verifiable service history, not just review volume

Read third-party reviews for patterns around missed deadlines, installation errors, unanswered service requests and finance surprises, but interpret them carefully. Ask for references with projects similar to your roof and utility territory, and ask whether the installer can show a clear after-sales service process.

A high number of reviews does not prove active licensing, accurate savings estimates or solvency. A few complaints do not alone prove misconduct. Assess concrete claims against documented transactions, license records and contract terms.

Check 9: Know your cancellation and home-sale rights

California's current CPUC Solar Consumer Protection Guide explains applicable cancellation rights, including at least three business days for qualifying home improvement contracts and five business days for homeowners aged 65 or older in the covered circumstances. Verify the rules and exceptions that apply to your agreement and obtain the cancellation instructions in writing.

If your home may be sold, require specific written terms explaining loan payoff, lease or PPA assignment, buyer qualification, equipment ownership and possible transfer fees. What happens at sale can be more financially important than an introductory monthly payment.

Check 10: Give yourself permission to walk away

A legitimate contractor can explain the proposal without insisting that you sign during the first visit. Watch for shifting prices, artificial 'tonight only' deadlines, vague answers to licensing questions, contradictory paperwork, unverified government claims and promises that solar is automatically free.

Compare multiple qualified offers. If a salesperson refuses to provide the complete paperwork, will not clarify the business responsible for installation, or pressures you to sign documents on a tablet without time to read them, do not proceed until the questions are resolved.

A useful decision rule for homeowners

Choose a company only after its identity, license, scope, full pricing, utility-savings assumptions, warranty responsibilities and contract terms withstand independent checking. Home Solar Simplified can help you learn what to compare and explore provider options; it cannot replace state license verification or guarantee an individual contractor's performance.

A trustworthy solar purchase is one you still understand when the salesperson leaves. Take the documents home, seek independent advice on unusual financing or legal terms, and make the decision on your schedule.

Frequently asked questions

Questions worth asking

• Where do I check a California solar contractor's license?
• How do I verify a solar salesperson?
• What solar financing red flags should I look for?
• Can a solar installer guarantee no future electric bills?
• What happens to warranties if a solar company goes out of business?
• How long do I have to cancel a California solar contract?
• Can I trust a solar company with five-star reviews?