Every new California home has had fire sprinklers since 2011. Here is what that means for yours.
What a system costs, what the code says, what an ADU or a remodel triggers, and what to do about the one already in your ceiling. When you want a quote, we connect you with a licensed C-16 fire protection contractor who works your part of the Inland Empire. We are not the installer, and we say so on every page.
Three answers most people came for
What a home sprinkler system costs
Ranges for new construction, retrofits, and tank and pump systems, with the source of every number stated. No figure asserted as fact that we cannot back up.
Read the plain versionDoes my ADU need sprinklers?
State law answers this one directly. An ADU is not required to have sprinklers if the primary residence is not, and building one cannot trigger sprinklers in the existing house.
Read the plain versionThe 5 year inspection and what fails
Fifteen years of mandated homes means a lot of systems nobody has looked at since the builder left. What an inspection covers and what usually needs fixing.
Read the plain versionOne licensed installer, not a list of bidders
California requires a C-16 fire protection license to contract sprinkler work, and this site does not hold one. So we do the part we can do well: explain the rules, publish honest ranges, and hand your request to one licensed contractor who covers your area. They call you, quote the job on their own paper, and pull the permit. You can check their license at cslb.ca.gov before you sign. If the fit is wrong, tell us and we find another.
Area guides
Each one is specific: which fire authority checks the plans, where the well lots and freeze zones are, and what the tract stock needs now. More of California follows as installers join.
Riverside County
What a 13D sprinkler system involves in Riverside County: plan check, cost ranges, well lots, tract rebuilds, ADUs. Get matched with a licensed C-16 installer.
Riverside · Moreno Valley · Perris · Menifee
San Bernardino County
Sprinkler rules and cost ranges for San Bernardino County homes: valley tracts, mountain cabins that freeze, desert well lots. Get matched with a licensed C-16 installer.
San Bernardino · Redlands · Yucaipa · Highland
Temecula and Murrieta
Sprinklers for wine country custom homes on wells, HOA tract inspections, and ADUs in Temecula, Murrieta, De Luz and Winchester. Licensed C-16 installer on request.
Temecula · Murrieta · Wine Country · De Luz
High Desert
Freeze design, well lots and tract inspections for Victorville, Apple Valley, Hesperia, Phelan and Oak Hills. Sprinkler rules, cost ranges, licensed C-16 installer on request.
Victorville · Apple Valley · Hesperia · Adelanto
Corona, Norco and Eastvale
Sprinkler inspections for the Eastvale and Corona tracts, custom builds on Norco horse properties, hillside lots near the Cleveland National Forest. Licensed C-16 installer on request.
Corona · Norco · Eastvale · Temescal Valley
Rancho Cucamonga, Fontana and Ontario
Tract builds in Ontario Ranch and north Fontana, foothill lots above Rancho Cucamonga, ADUs on older lots. Sprinkler rules, cost ranges, licensed C-16 installer on request.
Rancho Cucamonga · Fontana · Ontario · Ontario Ranch
The rest of the questions
What this site will not do
- Quote you a price. The licensed installer does that, in writing.
- Print a remodel threshold or a permit fee we cannot cite.
- Send your details to a list of bidders. One installer, and you can ask for another.
- Pretend to be the contractor. Every page says who does the work.
Send the address, get a call from a licensed installer
New build, ADU, remodel, inspection, or a head dripping right now. The address is enough to start.
Common questions
Does California require fire sprinklers in new homes?
Yes. The California Residential Code, section R313, has required an automatic sprinkler system in every new one and two family dwelling and townhouse statewide since January 1, 2011. Local jurisdictions enforce it through plan check and a final flow test.
Is this site a contractor?
No. California Home Fire Sprinklers is a referral service. We explain the rules and the cost ranges, and when you want a quote we connect you with a licensed C-16 fire protection contractor who covers your area. They quote, contract and permit the work. We never quote a price as the contractor.
Does an ADU need fire sprinklers in California?
Under Government Code section 66314, an ADU shall not be required to provide fire sprinklers if they are not required for the primary residence, and building an ADU shall not trigger a sprinkler requirement in the existing primary dwelling. A sprinklered primary house usually means the ADU gets them too.
What does a residential system cost?
Installer quotes we have seen in Maryland run about $1.35 to $1.60 per sprinklered square foot in new construction and $2 to $7 for retrofits, with a tank and pump adding roughly $3,000 to $6,000 on a well lot. California labor runs higher. The cost page explains the ranges and what moves them.