The short answer
Hire a company with an active California contractor license and insurance that measures on site and puts the price in writing before anything is ordered. A good glass company will tell you when a glass-only repair is enough. Be careful with anyone who pushes full window replacement on the first visit, asks for a big deposit, or offers "today only" pricing.
We hear the same stories every month. Someone calls about one foggy window and walks away with a quote for twelve new ones. A storefront owner pays a big deposit and then waits weeks for a call back. Whether you hire us or someone else, here is what to look for.
1. Check the license. It takes two minutes.
In California, a job that costs $1,000 or more in labor and materials, or that needs a building permit, has to be done by a contractor licensed with the Contractors State License Board. Glass and window specialists usually hold a C-17 Glazing license. You can look up any license for free on the CSLB website and see whether it is active, what work it covers, and whether a bond and workers comp are on file. Licensed contractors also have to put their license number on bids and contracts, so if it is missing, ask why.
2. Ask about insurance
Ask for proof of general liability insurance, plus workers comp if the company has employees. Broken glass, ladders and heavy panes are no place for an uninsured crew.
3. Do they measure on site?
Glass is made to exact sizes. A company that gives you a final price off a phone call is guessing, and you pay for the guess when the glass does not fit. A photo is great for a ballpark. The real price should come after someone measures.

4. Will they tell you when glass-only is enough?
This is the big one. If your frames are solid, foggy or cracked dual pane glass can usually be replaced on its own, without buying new windows. A full window replacement makes sense for warped or rotting frames, or for a whole house upgrade you actually want. Ask it straight out: can you replace just the glass? A good company gives you both options and the honest difference in price. Here is how glass-only replacement works.
We do not try to get over on anyone, and we do not upsell. If a glass repair fixes it, that is the quote you get.


When full replacement is the right call, it should be because the frame needs it, not because the quote is bigger.
5. Is the price in writing, with a normal deposit?
Get a written estimate that lists the glass type, size, any safety glass that is required, and whether your frame stays or goes. On most California home improvement jobs, the down payment cannot be more than $1,000 or 10 percent of the contract price, whichever is less. A company asking for half up front on a home job is a red flag. Curious what drives the number? Read what affects the cost of window glass replacement.
Send us the quote or a photo of the window. We will tell you whether a glass-only repair would do the job, and put our price in writing.
6. Read the reviews for the boring stuff
Star ratings help, but read what people actually say. Look for things like "showed up when they said," "explained everything," "cleaned up after," and "the price matched the quote." Those are the things that matter on install day. You can also see real jobs on our our work page.
7. Can you reach them after the job?
Seals fail, rollers wear out and locks get sticky. Before you sign, ask what the warranty covers, how long it lasts, and who you call if something goes wrong. A local, family owned crew is a lot easier to reach after the check clears than a call center.
Red flags to watch for
- A full window replacement pushed before anyone checks whether glass-only will work.
- "Today only" pricing, or pressure to sign on the spot.
- A large deposit, or a request to pay in full before work starts.
- No license number on the estimate or contract.
- A quote that does not list the glass type, size or what happens to the frame.
Quick answers
How do I check a contractor license in California?
Go to the CSLB website, choose Check a License, and enter the license number or business name. It shows whether the license is active, its classifications, and its bond and workers comp status.
What license does a glass company need in California?
Most glass and window specialists hold a C-17 Glazing license from the Contractors State License Board.
Is the cheapest quote always the worst one?
No. Sometimes the lower quote is the honest one, because it repairs the glass instead of replacing the whole window. Compare what is included, not just the total.
Do you give free estimates?
Yes. We measure on site and put the price in writing before anything is ordered.
