Altadena sits at about 1,358 feet on the lower slopes of the San Gabriel Mountains, directly north of Pasadena, with Eaton Canyon on one side and the Arroyo Seco on the other. The mountains wring extra moisture out of passing storms, so the community averages about 21 inches of rain a year, about 40 percent more than downtown Los Angeles. In a big year the numbers climb sharply: 1983 brought more than 48 inches.
Since the Eaton Fire of January 2025, water damage here often overlaps with fire recovery, from rain on burned hillsides to repairs on homes that survived but were left with damaged roofs and wet interiors. The Restoration Job can connect you with independent restoration providers that serve Altadena; call (888) 317-9980 any time. We are a referral service and do not perform the work.
How the call works: when you call (888) 317-9980, The Restoration Job connects you with an independent restoration provider that serves Altadena. That provider inspects the damage, explains the scope and quotes the work. The Restoration Job doesn't perform restoration itself. Read our referral disclosure.
Living Downslope of the Eaton Burn Area
The Eaton Fire started on the evening of January 7, 2025, during strong Santa Ana winds, and the whole of Altadena was ordered to evacuate. More than 9,400 structures were destroyed and over 1,000 more were damaged. Burned slopes and lots lose the plants and topsoil that once slowed runoff, so storms move water, ash and mud downhill faster than residents may be used to. Heavy rain in late January 2025 sent runoff from the burn scar toward the ocean within weeks of the fire.
Los Angeles County Public Works lists Eaton among its 2025 burn areas and offers email and text alerts with debris and mudflow forecasts before rainfall. If you live in Altadena near the canyon mouths or below cleared lots, sign up and plan to leave before a strong storm, not during it.
Homes That Survived the Fire Still Need Watching
An Altadena house that came through the fire standing may still be vulnerable to water. Heat can crack roof tiles and warp flashing, embers can damage vents and skylights, and firefighting water may have soaked attics and walls that were then closed up. Some of these problems only show up with the first heavy rain.
- Have the roof, flashing, gutters and attic vents inspected before the rainy season.
- Look for staining on ceilings and walls that suggests trapped moisture.
- Keep records and photos of every repair for insurance and permit purposes.
When water does get in, storm damage cleanup may include tarping, removing wet insulation and drywall, and drying the framing before repairs move forward.
Ash, Lead and Muddy Water Indoors
Soil testing after the fires found elevated lead at many properties downwind, southwest of the Eaton burn. That makes storm water and mud carried off burned lots more than a nuisance. If runoff reaches the inside of a house, treat it as contaminated: wear gloves, boots and a well-fitted mask, keep children and pets out, and avoid sweeping dry ash, which puts it back in the air. Porous items such as carpet, padding and upholstered furniture that sit in that water are usually discarded. A provider doing flood cleanup will typically remove sediment first, then clean and disinfect surfaces before setting drying equipment.
Older Houses From the 1920s and Earlier
Much of Altadena's housing predates modern building practices. Between 1924 and 1926 alone, about 160 steep-roofed, many-gabled homes were built here by developer Elisha Paul Janes, and older estates and bungalows line streets like Mariposa Street and Santa Rosa Avenue's Christmas Tree Lane. Houses of that era may have raised floors over crawl spaces, older galvanized or cast-iron plumbing and plaster walls. Leaks in these homes can travel along joists and stay hidden, and plaster walls dry more slowly than drywall, so moisture readings should guide how long equipment runs.
Foothill Climate and Keeping Mold in Check
Altadena summers are hot and dry, which helps rooms dry out, but winters bring cool, wet weeks when moisture lingers in closed spaces. Crawl spaces, attics with damaged ventilation and wall cavities soaked during firefighting or a storm are prime spots for mold. Look for a musty smell or spotting along baseboards. Mold cleanup only holds up when the source of moisture is fixed and materials are confirmed dry before anything is sealed back up.
Where Callers in the Altadena Area Are
Calls come in from across Altadena, including:
- Altadena Meadows
- Christmas Tree Lane
The same line also serves nearby communities such as:
- Pasadena
- Kinneloa Mesa
- Sierra Madre
- La Cañada Flintridge
Questions From Altadena Property Owners
How do I get warnings about mudflows from the Eaton burn area?
Los Angeles County Public Works runs an email and text subscription with debris and mudflow forecasts for recent burn scars, including Eaton, and has a hotline at (800) 933-0930. The National Weather Service office in Oxnard issues flash flood watches and warnings, and Ready LA County provides general emergency alerts. Signing up for all of them before storm season gives you the most lead time.
My house survived the Eaton Fire but now leaks when it rains. Is that common?
Yes, it can happen. Heat and embers can damage roofing, flashing, vents and skylights in ways that are not obvious until rain arrives, and firefighting water may have left moisture inside. Get the roof and attic inspected, dry any wet areas promptly, and document everything for your insurer, since some of the damage may tie back to the fire claim.
Is storm runoff from burned lots dangerous to clean up myself?
It can carry ash and soil that may contain lead and other contaminants. If you do small cleanup yourself, use gloves, boots and a properly fitted respirator, avoid dry sweeping, and keep the area ventilated. For mud inside living spaces, in ductwork or in a crawl space, a restoration provider can remove sediment, clean surfaces and dry the structure with monitoring.