Winterizing is a scheduled job whose entire purpose is preventing an unscheduled one, and the unscheduled one is a split pipe over a weekend with nobody in the building. Work covers draining and blowing out irrigation, insulating or heat tracing exposed pipe, protecting the backflow assembly and the outdoor hose bibs, and running the heat once before the first cold night rather than discovering it on that night. The plumbing repair after a freeze is the small half of the bill. The water is the large one.
Enter your ZIP to see the businesses listed for this trade nearest to your site, with their phone numbers.
Most of these jobs land near $480. The full spread runs $180 to $3,200, and the gap between those two ends is diagnosis against replacement rather than one business being dearer than another.
What moves it: how much of the job is parts, whether the fault is found in the first hour or the third, access to the equipment, and the hour of the day you call. We never speak to the businesses listed here, so there is no rate card behind any of this. It is our own band for the category, and there is no regional index: the figure does not change with your metro.
| How soon you need it | Typical | Range |
|---|---|---|
| Scheduled visitBooked in advance, no urgency multiplier applied | $480 | $180 to $3,200 |
| Same dayOur band multiplied by 1.12 | $540 | $200 to $3,585 |
| Emergency calloutOur band multiplied by 1.35 | $650 | $245 to $4,320 |
Our estimate from national cost bands, not a quote from any business. Every row is the same band with the urgency multiplier the site applies everywhere else, so this table can never contradict the headline number. Ask for a written price before the work starts.
In California the classification that squarely covers this is C-27 landscaping or C-36 plumbing, and the register says who holds it. Every listing on this site shows the classification, the license number and the date we read it, with a link back to the register entry so you can check it against the state rather than against us.
Overlapping classifications exist and are labeled as overlapping rather than as a match: C-13 fencing, C-42 sanitation system, C-55 water conditioning and D-59 hydroseed spraying. A general building contractor may hold the job and subcontract the trade, which is a real answer and a different one, so the card says which of the two you are looking at.
One thing worth being plain about: CSLB classifications do not distinguish commercial work from residential. There is no separate commercial license to hold and no register field that would prove one. That is why this page describes the equipment rather than the contractor, and why nothing here says a business has been checked out. We read a public record on a stated date. That is the whole claim.
Before you pay for a callout
We would rather you did not need a callout at all. These are the checks that end the most calls for this fault.
Try a quick fix first
Some issues resolve without a truck roll. Two minutes now can save the callout.
Book it before the first freeze in the forecast rather than after it. Every plumber and irrigation contractor in a cold market is on burst pipes the week it arrives, and a scheduled visit in October is a fraction of that call.
Walk the building and list what sits outside the heated envelope: hose bibs, the backflow assembly, pipe in an unheated roof space or a loading bay, and any run in a wall against the outside. That list is the whole job.
Find the main shutoff, label it today, and make sure whoever locks up knows where it is. Minutes matter on a split line and nobody hunts for a valve calmly.
If the premises sits empty over a holiday, leave the heat on a low setback rather than off. Two weeks of heating an empty building costs less than one ceiling.
Diagnosis
Written from how these faults actually present on a working premises, not from a manual.
It sits above ground by design, so it freezes before anything else on the site does. An insulated enclosure costs a fraction of the assembly, and the assembly is a testable device somebody has to certify again after it is replaced.
The valves open on schedule against a dry line and the solenoids cook. Setting the controller off is part of the job and it is the part most often skipped.
Listed for this trade
Read from public license registers, so there is no ranking here and no distance: this page has no location to measure from. Enter your ZIP to sort by who is nearest to your site.
By location
Local pages show which businesses are listed for that metro, how far out they sit, and the local conditions that drive demand.
Counted from the businesses we have imported for each metro center inside a 25 mile radius, and counting only those whose own license classification names this trade. General contractors licensed widely enough to take it on and subcontract it are excluded here, and still appear in a search. A metro reads “none yet” until we load a register that covers this trade there.
All coverage areasQuestions owners ask
Short, specific answers. If yours is not here, ask the business you call before you agree to the visit.
Related work
Batching jobs into one mobilization is the cheapest way to buy this kind of work.
Keeps Needing Doing
Read next
Sign by October 1, insist on a site map with no-pile zones, and get the trigger depth down to one inch at your doors.
6 min read
Three minutes on the state's own lookup, what the result does and does not prove, and the two questions to ask on the phone.
7 min read
Five checks that take ten minutes, plus the three readings a refrigeration tech needs before loading the truck.
7 min read
Ready when you are
Search your ZIP to see the businesses listed for this trade nearest to your site, with the license numbers and phone numbers we hold, then call them yourself.