Building back in Altadena
The Eaton Fire started on January 7, 2025. Much of Altadena is still being rebuilt. Lake Avenue, the main business street, took a hard hit, and a town council officer estimated that more than half of the community's businesses were lost.
Most buildings here are single-family homes. The county planned to steer new mixed-use projects toward the Lake Avenue corridor and away from the foothills. If you're putting up a commercial or mixed-use building there, or replacing one that burned, and it needs fire sprinklers, plan the system early. Riser location, pipe routes and the water connection all shape the floor plan.
That's our job on this page. We design the system. We install it.
Start with the water supply
A sprinkler design starts with how much water the site can deliver. Most of Altadena gets its water from one of three small private companies: Lincoln Avenue Water Company, Las Flores Water Company or Rubio Cañon Land and Water Association. A hydrant flow test request goes to whichever one serves your lot.
Get current numbers. During the Eaton Fire, firefighters reported low hydrant pressure in neighborhoods served by Rubio Cañon and Lincoln Avenue, and Las Flores lost two reservoirs before it was later tied into Lincoln Avenue's system, so a flow test from before the fire may not describe the supply your building has today.
County fire reviews the plans
Altadena is unincorporated. The Los Angeles County Fire Department (the Consolidated Fire Protection District) covers it. The department's Fire Prevention Division handles plan review and business inspections, and its regional units do new construction field inspections. Altadena falls under the Arcadia office in the East Region.
Where do the sprinkler drawings go? Check the department's current list of plan check and inspection offices before you submit, because sprinkler and alarm plans may be routed to a different office than your building plans. For burn-area projects, the county's One-Stop Permit Center for Eaton Fire rebuilds is at 464 West Woodbury Road, Suite 210, in Altadena.
How an installation goes
- We review your drawings, occupancy and the site's water source.
- Flow test data comes from the water company that serves the lot.
- We lay out the system and run the hydraulic calculations against that supply.
- Plans go to county fire for review.
- Crews install the riser, piping and heads.
- The system is tested, and county fire does its field inspection.
Who does the work, and what comes after
California work is done by Hedrick Fire Protection, which holds C-16 (fire protection) and C-10 (electrical) contractor licenses and is licensed by the California State Fire Marshal under Title 19 for inspection, testing and maintenance of water-based fire protection systems.
Installation is the start. Under NFPA 25 the finished system gets quarterly and annual inspections, and California's Title 19 adds a 5-year service and certification by a State Fire Marshal licensed contractor. See fire sprinkler service in Altadena for that ongoing work.
Related work on the same project:
- Annual private fire hydrant testing in Altadena
- Fire alarm systems in Altadena
- Restaurant sprinkler inspections in Altadena
Building outside Altadena? See fire sprinkler installation across Los Angeles County or fire sprinkler installation in Orange County. Everything else we do here is on the Altadena fire protection page.
Altadena sprinkler installation questions
Who reviews and inspects a new sprinkler system in Altadena?
The Los Angeles County Fire Department's Fire Prevention Division. It does plan review, and its East Region unit handles new construction field inspections for Altadena. Confirm the current submittal office with the department first.
Where do I get a fire flow test?
Ask your water company. In most of Altadena that's Lincoln Avenue Water Company, Las Flores Water Company or Rubio Cañon Land and Water Association.
Do you work on public street hydrants?
No. Public hydrants belong to the water system. Our hydrant work is limited to private hydrants on your property.
To plan a sprinkler installation in Altadena, call us at (213) 568-0188 or email us at socal@1profire.com
Our services include
What to have ready for a quote
- Your drawings and site address
- The water company that serves the lot
- Any comments already received from county plan check