Mold Inspection

No. 24H Mold Inspection of Pasadena inspects and tests only. We never perform remediation or removal, and that line is deliberate. Most of the calls here come from pre-1930 raised-foundation housing: Craftsman blocks in Bungalow Heaven, period revivals around Madison and El Molino, plaster over wood lath that hides wet framing without ever staining. The visible spot on a baseboard is usually the tail end of something that starts in a vented crawl space, a shower pan on original cast iron, or stucco with no drainage plane behind it. A company that bills for the cleanup is also the company deciding how much cleanup you need. What we produce is the diagnosis: what is growing, what moisture source feeds it, how far it runs behind finishes, and lab confirmation of the samples. You take that to two or three remediation contractors and get comparable bids on a defined scope, which matters more here than most places, because in a landmark district pulling original siding or windows is a review process with the city, not a call a crew makes on site. When the work is done, we can return for independent verification.

We cover the whole city and the unincorporated pockets around it. Inside Pasadena that means Old Town and the Playhouse District, Bungalow Heaven, Madison Heights, the San Rafael Hills west of the arroyo, Hastings Ranch, and the Caltech blocks along California Boulevard, plus the foothill streets north of New York Drive. We also serve South Pasadena, San Marino, and Sierra Madre from this same team, so a search for mold detection in South Pasadena lands in the right place. Several neighbors have their own 24H Mold Inspection page written around their own housing and drainage: if your property is in Altadena, Arcadia, Monrovia, Alhambra, Glendale, or La Cañada Flintridge, start on that city's page instead. Standard scheduling runs same day or next day across this area, and we answer emergency calls around the clock, which is what a burst supply line at midnight or a contingency expiring Friday actually requires. If your address sits on a boundary and you are not sure which page fits, call the number on this page and we will route it.

No, and the gap is wider in Pasadena than in most markets. A general home inspection is a broad condition survey, covering roof, electrical, plumbing, and appliances, and most contracts exclude mold outright; its moisture coverage stops at what is visible from accessible areas. That leaves a lot uninspected in a city where much of the for-sale inventory is a century old: crawl spaces with clearance too tight for an inspector to enter, plaster over wood lath that holds moisture without showing a stain, galvanized supply lines and cast-iron drains at the end of their service life, and additions built across five permit eras. A mold inspection is narrow and instrument-driven instead: moisture meters along the base of walls, thermal imaging over suspect areas, entry into the attic and sub-area, and lab-analyzed air or surface samples where the walkthrough justifies them. Most buyers here order both. The practical sequence is to schedule the mold inspection inside your contingency window with the home inspection report already in hand, so we target the sub-area, odor, or prior water damage it flagged.

Yes, in three distinct ways. The fire started in Eaton Canyon on January 7, 2025 and pushed evacuation orders across the northeast side of the city. Houses that survived took smoke and ash into attics, wall cavities, and duct systems, many took suppression water on top of that, and then they sat closed with the power off for weeks during the wettest stretch of the year, with no conditioning and no air movement over wet materials. Second, burned ground above the canyon sheds rain instead of absorbing it, so the storms that followed moved more water and sediment down the drainages than the streets below were built to carry, and that reaches crawl spaces and slab edges on the blocks nearest the wash. Third, rebuild and repair work adds its own moisture when framing gets rained on before it is closed in. If your home was inside the evacuation area and has had smoke or water cleanup, air sampling against an outdoor baseline is what separates leftover combustion particulate from an active mold source, and it is worth doing before anyone closes a wall back up.

Air sampling draws a measured volume of air through a spore trap, and the lab reports spores per cubic meter by type. There is no legal threshold number to compare it against, so the indoor result only means something next to an outdoor baseline taken the same day at the same property. That comparison is the test, not the raw count. Local conditions are what make the baseline matter here. The foothills catch noticeably more rain than the basin floor, close to twenty inches a year against roughly fifteen downtown, and the arroyo and canyon vegetation push Cladosporium and basidiospore counts up outdoors for days after a storm. Demolition and rebuild dust on the east side and construction in the Old Town blocks shift it again. A number that looks elevated against a generic table can be entirely normal for a February morning above the arroyo, and a modest number can be significant in a sealed unit in August. Ask any report you receive to show the outdoor sample beside the indoor one, with the moisture readings that explain the difference.

Yes, and multifamily is a large share of the work here, because more than half of Pasadena households rent. The stock is unusually varied: the bungalow court was invented in this city, with St. Francis Court going up on Colorado Boulevard in 1909, and the surviving courts and 1920s courtyard buildings sit alongside 1960s dingbats with tuck-under parking around Del Mar and the Caltech blocks, plus newer podium construction in Old Town and the Playhouse District. The recurring problem in all of them is that the leak and the damage are in different units, because wet walls are shared and plumbing stacks serve several floors, so inspecting one unit answers half the question. Since the 2022 charter amendment that created rent stabilization and a rental housing board here, habitability disputes get documented far more formally than they used to, and a report from a company that does not bid the repair carries weight with owners, tenants, and insurers alike. For a building, ask us to scope by riser and stack rather than only by the unit that called.

Not as its own trade. California licenses no mold inspector or mold remediator specifically. The 2001 Toxic Mold Protection Act directed the state to set permissible exposure limits and it never did, so there is no state mold license and no state number to test against. What is verifiable is third-party certification for the inspector, general liability coverage, a contractor's license for whoever performs the physical repair work, and whether the company doing the testing also sells the removal. Pasadena adds a step most cities do not: if the property is a designated landmark, a contributor in a district like Bungalow Heaven, or under a Mills Act contract, exterior work goes through the city's historic preservation review before it starts. That means the report has to describe affected materials precisely enough to survive that review, or the scope gets rewritten mid-project. When you call around, ask each company for its certification numbers and whether it performs remediation, and if it does both, have the testing done by someone who does not.