Some specialty work is normal to farm out to specialists. Some work should never leave the shop. Here's the line, and what California law says about disclosure.
Sublet work is the part of collision repair customers rarely think about until they read their final invoice and see a line item from a company they've never heard of. "Sublet" means part of the repair was farmed out to another specialist business. Some sublet work is normal and good. Some shouldn't happen.
Knowing the difference is most of what the customer needs to know.
What sublet is, in plain English
Sublet is the body shop's term for outsourced work. The body shop takes the car in, manages the overall repair, and farms out specific specialty tasks to other businesses that focus on that one thing. The sublet partner does the work, the body shop pays them, and the cost flows through to the customer's invoice (and usually to the insurance claim).
Common sublet partners:
ADAS calibration specialists. Companies that do nothing but sensor calibration all day. They have the equipment, the OEM access, and the volume to be more accurate than a body shop generalist.
Alignment shops. Wheel alignment after a structural repair or major suspension work. Most body shops have alignment racks, but some sublet to a dedicated alignment shop, especially on specialty vehicles.
Glass companies. Windshield replacement, side glass, rear glass. Many body shops sublet glass to companies that do nothing but auto glass.
Detail shops. Final paint correction, ceramic coating, or specialty interior detail.
Mechanical specialists. Engine cooling system repairs, transmission work, suspension overhaul that's outside the body shop's scope.
Wheel reconditioning. Refinishing alloy wheels, repairing curb rash, straightening minor bends.
All of these are normal to sublet, and on most repairs the sublet partner is more accurate than the body shop would be doing the same work in-house with less specialized equipment.
What we sublet, and why
I'll tell you specifically what we farm out at our shop.
Some ADAS calibration on specific manufacturers. We do most calibration in-house, but for certain manufacturers with proprietary calibration tools we don't have direct OEM access to, we sublet to a specialist who does. The customer doesn't lose accuracy; they gain it. The specialist runs hundreds of calibrations a month on that brand. We'd run twenty.
Some glass work. We do most glass in-house, but on certain factory-laminated windshields with embedded sensors and heated grids, we sublet to a glass specialist who runs higher volume on those exact windshields and has better access to OEM glass.
Wheel reconditioning. We don't refinish wheels in-house. A dedicated wheel reconditioning specialist with the right machines, paints, and process produces a better wheel than we'd produce.
Mechanical work outside collision scope. If a repair reveals a transmission issue or engine cooling problem that isn't related to the collision, we usually refer the customer to a mechanical shop rather than try to do it at a body shop's overhead and expertise.
What we never sublet
Three categories, period.
Frame straightening and structural welding. Frame work is structural. The car's crash performance depends on the structural geometry being restored to within OEM tolerance. Frame work has to happen in-house, on equipment we own and operate, by technicians I've personally trained. Subletting frame work to another shop means losing chain-of-custody on the most critical part of the repair.
Body repair on structural panels. The pulls, the welds, the panel replacement on anything load-bearing. Same reasoning. Same in-house requirement.
Paint. All paint, on every car, in our booth, by our painters. Paint is the most visible part of the repair, the most variable in quality, and the one customers judge the entire job by. Sending paint out to a sublet painter is sending out the work the customer will be looking at every day for the next ten years. We don't do it.
How to tell what your shop sublets
Three places sublet shows up on your paperwork:
Explicit sublet line items. A line on your invoice that says "sublet: ABC Calibration Services - $450." Most ethical shops put sublet line items on the invoice with the partner's name.
Implicit sublet through OE work descriptions. A line that says "alignment" or "calibration" without naming a sublet partner. Could be in-house or could be sublet; ask.
The disclosure conversation at intake. Some shops mention sublet partners during the initial estimate conversation. Most don't. Ask directly: "What work on this car will be done in-house, and what will be sublet?"
California's disclosure requirements
California's Bureau of Automotive Repair has specific requirements around sublet work. The relevant pieces:
The auto body shop is legally required to provide a written estimate that includes sublet costs (when known) or a notation that sublet costs may be added.
The shop is required to obtain authorization for any work not on the original estimate, including new sublet items that come up during repair.
The final invoice must itemize sublet work with the name of the sublet provider when applicable, especially for warranted work.
If a shop is doing sublet work and not disclosing it on the estimate or invoice, they're violating BAR regulations. The customer can file a complaint with the Bureau of Automotive Repair, and BAR complaints are taken seriously, especially when the documentation is clear.
Why subletting can be a positive
I want to be clear about this, because some customers hear "sublet" and assume their work is being passed off to a cheaper provider. Often the opposite is true.
A specialist who does one type of work all day is usually better at that work than a generalist who does it occasionally. ADAS calibration specialists run more calibrations in a week than most body shops run in three months. Wheel reconditioning specialists have machines and processes a body shop doesn't have. Glass specialists have direct OEM relationships and inventory we'd be days behind on.
The question isn't whether a shop sublets. It's what they sublet, what they don't, and whether they disclose it. A shop that sublets calibration to a specialist and keeps structural work in-house is making the right call. A shop that sublets paint or frame work to keep margins up is making the wrong one.
What to ask your shop
Two questions cover most of what you need to know:
"What parts of this repair will be done in-house, and what will be sublet?" A specific answer means they know their own operation. A vague answer means you don't.
"Will the sublet work be itemized on my invoice with the partner's name?" Yes is the right answer. Anything else, push for clarification.
What we put on every customer's paperwork
Every estimate at our shop notes which work is in-house and which will be sublet, with the sublet partner identified when known. Every invoice itemizes sublet work with the partner's name and the dollar amount. Customers can call the sublet partner directly with questions about their portion of the work.
The transparency takes thirty seconds of writing on each form. It saves hours of "who did what on my car" conversations later.
Ask what's done in-house. Ask what isn't.
When sublet is the wrong answer
If your shop is subletting structural work, frame work, paint, or anything on the body of the vehicle's load-bearing structure, that's a red flag. The chain of custody on those repairs matters, and breaking the chain across two businesses introduces quality risk the customer can't track.
If your shop is subletting calibration, alignment, glass, wheels, detail, or specialty mechanical work, that's usually fine and often better than in-house.
If your shop is subletting things and not telling you, that's the problem regardless of what's being sublet.
If your shop is farming out part of your repair and you're not sure which, bring us the work order at (949) 859-7990 or stop in. We'll tell you what's normal and what should have stayed in-house.
Ask what's done in-house. Ask what isn't. - Gilbert
Frequently Asked
What is sublet work in collision repair?
Work that the body shop farms out to a specialist business. Common examples include ADAS calibration, wheel alignment, glass replacement, and wheel reconditioning. Sublet is normal for specialty work where a dedicated specialist produces better results than a body shop generalist. Sublet is not appropriate for structural, frame, or paint work.
Should my body shop tell me they're sending work out?
Yes, both on the estimate and on the invoice. California Bureau of Automotive Repair regulations require sublet work to be disclosed in writing, with the sublet partner identified on warranted work. A shop that doesn't disclose sublet on the estimate or invoice is violating BAR regulations.
Who actually does my alignment after collision repair?
Depends on the shop. Some body shops have alignment racks and qualified alignment technicians in-house. Some sublet alignment to a dedicated alignment shop, especially on specialty vehicles. Both can be appropriate. Ask your shop specifically.
Is sublet work as good as in-house?
Often better, on specialty work. A calibration specialist who runs hundreds of calibrations a month on a specific manufacturer is more accurate than a body shop generalist doing the same work occasionally. Specialty sublet partners exist precisely because the specialization improves quality. The wrong sublet (structural, frame, paint) is a different story.