Most solar quotes in Los Angeles look professional. They show a clean layout, a system size, a monthly payment, and a savings estimate. What they do not show is what happens if the install runs long, production comes in low, or the company changes hands before your warranty ends.
The difference between a quote you can trust and one you cannot is rarely on the page. It shows up in the answers you get when you ask direct questions. This checklist covers the 10 questions worth asking any Los Angeles solar installer, what a good answer sounds like, and which answers should make you pause.
Quick answer: the 5 questions to ask first
- What is your CSLB license number, and is it active?
- Who physically installs the system, your crew or a subcontractor?
- Who services the workmanship warranty in year 10?
- How does my utility (SCE, LADWP, or a city utility) change this proposal?
- What are the total financing fees, and what is the cash price?
The 10 Questions at a Glance
Print this table or keep it open during every sales visit. Use the same questions with every installer so you can compare answers fairly.
| # | Question | What a good answer sounds like | Red flag |
|---|---|---|---|
| 1 | What is your CSLB license number? | A number you can verify in under a minute, classified C-46 (Solar) or C-10 (Electrical) | Hesitation, or a license in a different company name |
| 2 | In-house crews or subcontractors? | A clear answer, with a named crew lead and who is accountable | “It depends on the week” |
| 3 | How many installs have you done in my part of LA? | Specific cities or neighborhoods and permit experience | Only a national total |
| 4 | What is the full equipment list in writing? | Panel, inverter, and battery brand and model on the proposal | “Premium equipment” with no models |
| 5 | What if production comes in below the estimate? | A written production guarantee or a stated remedy | A shrug or “that never happens” |
| 6 | What does the workmanship warranty cover, and who services it? | Term in years, what is covered, and a named service team | Warranty serviced by an unnamed third party |
| 7 | What is the real permitting timeline for my city right now? | A range in weeks based on this month’s approvals | “Fast” with no numbers |
| 8 | Who gets my Permission to Operate (PTO) from the utility? | The installer handles it start to finish | You are told to chase the utility yourself |
| 9 | How does my utility change this proposal? | Names SCE, LADWP, or your city utility and explains export credits | The same template used for every address |
| 10 | What are the total financing fees, and what is the cash price? | Cash price, loan price, and any dealer or origination fee shown separately | Only a monthly payment is quoted |
Why This Checklist Matters More in Los Angeles
Your Utility Changes the Math on Every Quote
Los Angeles homeowners are split across several utilities, and each one affects what solar will save you. A quote that does not name your utility is closer to a guess than a quote.
| Utility | Who it serves | What to ask your installer |
|---|---|---|
| SCE | Much of Los Angeles County outside the City of LA | How export credits under the Net Billing Tariff are modeled, and whether a battery is recommended |
| LADWP | City of Los Angeles | Which LADWP program rules and rebates apply, and who handles the interconnection paperwork |
| Glendale, Burbank, or Pasadena Water and Power | Pockets of the greater LA area | Whether the installer has completed interconnections with that city utility before |
For a deeper look at one utility, see our guide to the LADWP solar and battery cost estimate for 2026.
A Weak Quote Does Not Look Weak on Paper
Two proposals can list the same system size and look almost identical. One is built on a realistic production estimate. The other is padded so the savings number looks better. The gap only appears months later on your actual bill, which is why the questions below matter more than the number on the front page.
What a Trustworthy Solar Quote Includes
Before you ask the 10 questions, check that the proposal itself is specific. A solid quote spells out the following:
- System size in kW and estimated annual production in kWh
- Exact panel and inverter brands and models, plus battery details if included
- Separate warranty terms for panels, inverter, and workmanship
- The utility the estimate was built for, and the rate plan assumed
- Cash price and financed price shown side by side
- Who pulls permits and who secures Permission to Operate
If any of these are missing or bundled under vague phrases like “premium equipment,” flag it before going further. Our guide on how solar estimates work explains how to read each line.
The 10 Questions to Ask Any LA Solar Installer
Question 1: What Is Your CSLB License Number, and Is It Active?
Every legitimate solar installer in California holds an active license from the Contractors State License Board (CSLB), usually C-46 (Solar) or C-10 (Electrical). Look up the number yourself at cslb.ca.gov.
- Check: the license is active, in the company’s name, and carries workers’ compensation and a bond
- Good answer: the number is given immediately and matches the CSLB record
- Red flag: hesitation, or a license that belongs to a different business
Question 2: Do You Use In-House Crews or Subcontractors?
Neither answer is automatically wrong, but it changes who is accountable if something needs fixing after the sale. Read more about who you are actually buying from in our post on solar panel supplier vs installer in California.
- Good answer: a named crew lead, and one company that owns the result
- Red flag: the salesperson, the subcontractor, and the manufacturer all point at each other
Question 3: How Many Installs Have You Completed in My Part of LA?
Permitting quirks vary by city. A crew with real experience in your neighborhood already knows them, and that usually means fewer delays.
- Good answer: specific cities, recent projects, and references you can contact
- Red flag: only a nationwide install count
Question 4: What Is the Full Equipment List, Including Panel, Inverter, and Battery Brand?
Get this in writing, not verbally during the sales visit. Brand and model numbers let you check specs and warranty terms yourself. For a closer look at one lineup, read our Qcells solar panels review.
- Good answer: model numbers and spec sheets attached to the proposal
- Red flag: “quality panels” with no brand or model
Question 5: What Happens If Actual Production Comes In Below the Estimate?
Every estimate is a forecast. A confident installer explains how it was modeled and what remedy exists if real output falls short.
- Good answer: a written performance guarantee, or a clear service process
- Red flag: no explanation of how the production number was calculated
Question 6: What Does the Workmanship Warranty Cover, and Who Services It Years From Now?
A 25-year panel warranty means little if the workmanship warranty runs only 5 to 10 years, or is serviced by a third party that may not exist when you need it. Our article on whether a solar warranty is actually enforceable covers this in detail.
| Warranty type | What it covers | What to ask |
|---|---|---|
| Panel product warranty | Defects in materials and manufacturing | How many years, and who files the claim |
| Panel performance warranty | Minimum power output over time | Guaranteed output level at the end of the term |
| Inverter warranty | Inverter failure | Term, and whether replacement labor is included |
| Workmanship warranty | Installation quality, roof penetrations, wiring | Term, and who services it if the installer closes |
Question 7: What Is the Realistic Permitting Timeline for My City Right Now?
Do not accept an industry average. Ask what they are seeing this month for your city, whether that is the Los Angeles Department of Building and Safety (LADBS) or another jurisdiction.
- Good answer: a range in weeks for permitting, equipment delivery, and installation
- Red flag: “fast” with no numbers
Question 8: Who Handles My Permission to Operate (PTO) With the Utility?
Permission to Operate is the utility’s approval to switch your system on. It should be the installer’s job, not something you are expected to chase.
- Good answer: the installer submits the interconnection application and follows it through
- Red flag: you are asked to pull your own permits “to save money”
Question 9: How Does My Specific Utility Change This Proposal?
If the answer does not name SCE, LADWP, or your city utility, the quote probably was not built around your real bill. SCE customers fall under California’s Net Billing Tariff, which took effect in April 2023 and pays lower export credits than the old structure. That is why battery sizing and self-consumption matter. Also ask how time-of-use rates affect savings, which we explain in our guide to time-of-use solar savings.
Question 10: What Are the Total Financing Fees, Including Dealer or Origination Fees?
Always ask for the cash price, even if you plan to finance. The gap between the two shows what financing really costs. Compare structures using our breakdown of solar lease vs. loan in California.
| Option | Who owns the system | What to confirm in writing |
|---|---|---|
| Cash | You | Total price and what is included |
| Solar loan | You | Rate, term, dealer fee, and prepayment terms |
| Lease or PPA | A third party | Annual rate escalator, buyout terms, and what happens if you sell the home |
Incentive rules for residential solar changed for 2026. If a quote assumes a tax credit, ask the installer to show the written basis for it, and confirm eligibility with a tax professional.
Red Flags That Should Slow You Down
| Red flag | Why it matters |
|---|---|
| Pressure to sign today | A reputable company is happy to do follow-up calls and let you compare |
| No CSLB number offered upfront | You cannot verify the contractor, and permits can be at risk |
| “Free solar” or “utility-approved” claims | Someone always pays, and utilities do not endorse specific contractors |
| Only a monthly payment shown | It hides the cash price and financing fees |
| Vague warranty language | You cannot tell who is responsible in year 10 |
| Roof condition ignored | An old roof may need work first; see if my roof is too old for solar panels |
How to Compare Three Quotes Side by Side
Ask at least three installers the same questions, using the same usage profile and offset target. Then score each answer, not just the monthly payment. A lower payment with a vague warranty or unclear timeline usually costs more over time.
| Category | Installer A | Installer B | Installer C |
|---|---|---|---|
| CSLB license verified | |||
| Crew type (in-house or sub) | |||
| Equipment listed by model | |||
| Workmanship warranty term | |||
| Permit to PTO timeline | |||
| Utility named and modeled | |||
| Cash price | |||
| Financing fees disclosed |
Rating also matters, but do not assume it settles the decision. See how installer rating affects your solar payback period.
How Axia by Qcells Answers These Questions Before You Ask
Factory-Direct Pricing You Can Verify
As the exclusive Qcells partner behind Axia by Qcells, US Power sources American-made panels directly from the factory. That is why the equipment lineup holds up under scrutiny and does not need vague “premium equipment” language. You can see exactly what you are getting before you ask.
One Warranty, CSLB-Licensed Consultants, and a 3 to 4 Week Timeline
- Every Axia by Qcells project consultant is CSLB-licensed
- Every install is backed by a single 25-year comprehensive warranty covering panels, performance, and workmanship together
- Typical installs move from signed contract to Permission to Operate in 3 to 4 weeks
Want to see the numbers for your home first? Our free solar calculator gives you a starting estimate before you talk to anyone. You can also read verified feedback in our Axia by Qcells reviews.
Your Next Quote Should Answer All 10
A good solar quote in Los Angeles is not the one with the flashiest savings number. It is the one where every question on this list gets a specific, confident answer. That is true whether the quote comes from us or from someone else, and it is worth holding every proposal to the same standard.
If you would like to see how a factory-direct Qcells quote answers these questions for your home, get a free estimate from Axia by Qcells and compare it against whatever else you are considering. For the wider picture on going solar in the city, start with our solar panels in Los Angeles guide.
Frequently Asked Questions
What questions should I ask a solar installer before signing?
Start with the CSLB license number, then ask about crews, the full equipment list, workmanship warranty terms, permitting timeline, utility specifics, and total financing fees. The table near the top of this page lists all 10 with sample good answers.
What license does a solar installer need in California?
Solar installers in California typically hold a C-46 (Solar) or C-10 (Electrical) license from the CSLB. A general building license can apply when a project combines several trades, such as solar plus roofing.
How do I verify a solar contractor’s CSLB license?
Search the license number on the CSLB website. The record shows whether the license is active, its classification, bond and workers’ compensation status, and any disciplinary history.
How many solar quotes should I compare in Los Angeles?
Compare at least three, using the same usage profile and offset target for each. With fewer than three, it is hard to tell whether a quote is competitive or just the only option you have seen.
Does my utility change which questions matter?
Yes. SCE customers should press on export credit assumptions and storage recommendations because of the Net Billing Tariff. LADWP and city utility customers should confirm the installer understands their specific interconnection and rebate process.
Who handles permits and utility approval for solar in Los Angeles?
Your installer should. That includes building permits, the utility interconnection application, inspections, and Permission to Operate. Being asked to pull permits yourself is a warning sign.
Is it a red flag if a solar installer uses subcontractors?
Not automatically. What matters is accountability. Ask who owns the result, who services the workmanship warranty, and whether the answer is in writing.
What if an installer will not answer one of these questions directly?
Treat it as useful information. A company confident in its licensing, equipment, and process usually answers directly, and repeated vagueness on basic questions is a pattern worth taking seriously before you sign.