A musty smell that comes back
An earthy odor in one room, a closet or a cabinet under a sink, especially after the house has been closed up, is often the first clue to growth behind a surface.
Mold inspection
Mold Inspection in Los Angeles
A hands-on investigation of your home or building to find where the moisture is coming from, what materials it has reached and how much needs to be removed.
Phone answered 24 hours a day. Talk to a remediation specialist now.
- Moisture source found and fixed
- Containment + HEPA filtration
- Homes and commercial
What a mold inspection is for
Mold is a symptom. The problem underneath it is water: a slow drip in a wall, a roof flashing that lets winter rain in, a bathroom that never dries out. A mold inspection is the work of finding that water and following it until we know where the growth starts and where it stops.
That answer decides everything that follows. It tells you whether you are looking at a small patch you can clean yourself or a job that needs containment, and it keeps a remediation from missing the part of the problem nobody could see.
- Visual inspection of affected rooms, plus the spaces around and below them
- Moisture readings in drywall, framing, subfloors and trim
- Thermal imaging to spot cool, damp areas behind finished surfaces
- Humidity readings in living spaces, attics and crawl spaces
- A written scope: the source, the affected materials and what should come out
Signs it is time for an inspection
You do not need to see mold to have a mold problem. These are the signals that usually justify a closer look.
Stains, bubbling or soft spots
Yellow or brown rings on a ceiling, paint that blisters, baseboards that swell or flooring that lifts all point to water that has been there longer than a day or two.
A leak you already fixed
A repaired pipe or roof stops new water, but it does not dry the insulation and framing that got wet. If nobody checked the cavity afterward, it is worth checking now.
Buying, selling or renting
Before closing on an older home or turning over a unit, an inspection gives you a clear picture of any moisture history instead of guesses. Our guide to signs of hidden mold covers more clues to watch for.
How we run an inspection
Most visits follow the same order, adjusted to the building and what you have noticed.
Your history of the problem
When the smell started, past leaks, recent repairs, who in the home has been bothered by it. Details like these save a lot of searching.
Exterior and roof check
We look at gutters, grading, stucco cracks, window flashing and roof transitions, because many interior problems begin outside.
Room-by-room survey
Affected areas first, then adjoining rooms, the floor below and the space above. Moisture meters and a thermal camera guide where we spend time.
Mechanical and plumbing spaces
Water heater closets, under-sink cabinets, the air handler and its condensate line, and any attic or crawl space access.
Confirming hidden growth
Where readings point to a wet cavity, we may ask to make a small inspection opening or use a borescope so the scope is based on what is actually there.
Findings and next steps
We walk you through the source, the affected materials and the recommended scope, and tell you whether sampling would add anything useful.
Seeing or smelling mold? Call and describe what you're dealing with. We'll tell you what it likely means and arrange an inspection. Phone answered 24/7.
What you know when we leave
An inspection should end with answers you can act on, not a vague warning.
- The source
- Where the water is coming from and whether it is still active.
- The extent
- Which rooms, walls, ceilings or cavities are affected, and where the damp area ends.
- Materials involved
- Which surfaces can be cleaned and which porous materials, such as drywall or insulation, should be removed.
- Recommended scope
- Whether the job calls for containment and professional mold remediation, or is small enough to handle carefully yourself.
- Whether to sample
- If lab results would help, for example in a real estate deal or for a tenant, we explain what kind and why.
Los Angeles conditions
What we look for in LA-area homes
Rainy-season leaks
The climate is mild and mostly dry, but winter storms find every weak point. Flat and low-slope roofs on mid-century and Spanish-style homes, window frames and roof transitions are where we see leaks start.
Stucco that hides moisture
Stucco can look sound while the sheathing behind it stays damp. Staining at the bottom of an exterior wall or a musty closet on an outside wall gets a careful look.
Coast versus valley
Near the ocean, the marine layer keeps humidity higher, so poorly ventilated rooms and closets stay damp longer. Inland valleys run hotter and drier, where the usual culprits are plumbing leaks and AC condensation. Our post on marine layer humidity and mold goes deeper.
Raised foundations and shared walls
Older homes on raised foundations need the crawl space checked. In apartments and condos, stacked plumbing means the source can be a unit above or next door.
What affects the cost of an inspection
We quote after hearing what is going on. These factors drive the time an inspection takes.
- Size of the home or building and how many areas need checking
- Access to attics, crawl spaces and mechanical closets
- Whether inspection openings or borescope checks are needed
- Whether you also want air or surface samples sent to a lab
- Multi-unit buildings where adjoining units have to be checked
Problems an inspection usually turns up
| What you notice | What we often find |
|---|---|
| Musty smell under the kitchen sink | A slow drip at a supply line or drain fitting that has soaked the cabinet floor and the wall behind it |
| Dark spots on a bedroom ceiling | A roof leak or a bathroom exhaust fan venting into the attic; see attic mold removal |
| Stained grout and peeling paint in the bathroom | Poor ventilation, and sometimes a failed shower pan; see bathroom mold removal |
| Smell when the AC runs | Growth on the evaporator coil or drain pan, or damp duct insulation |
Where we inspect
We inspect homes, apartments and commercial spaces across Los Angeles and nearby cities, including Santa Monica, Pasadena and Long Beach. The full list is on our service areas page. Our phone is answered 24 hours a day at (424) 479-7915.
Questions homeowners ask
What is the difference between a mold inspection and mold testing?
An inspection is an investigation: we look, measure moisture and trace the water to find the source and the extent of growth. Testing means collecting air or surface samples for a lab to analyze. Many homes need only the inspection. Our mold testing page explains when sampling adds useful information.
Do you need to open walls during a mold inspection?
Not usually at the start. Moisture meters and thermal imaging tell us where to look, and a small inspection opening is made only when readings point to a wet cavity and you agree to it. The goal is to confirm, not to demolish.
Should I clean visible mold before the inspection?
It is better to leave it. The pattern of growth helps show where the water came from, and scrubbing or spraying it can spread spores. Keep the area closed off, run a fan to the outside if you can, and call us.
Can an inspection find mold I can't see?
Often it can find the conditions that cause it. Hidden growth almost always sits next to moisture, so elevated readings, staining patterns, odor and the location of plumbing or roof penetrations narrow down where concealed mold is likely.
Talk to a specialist
Call about your mold problem
Tell us what you're seeing, smelling or worried about. We'll ask a few questions, explain what it likely means, and arrange an inspection and a written scope.
(424) 479-7915Phone answered 24 hours a day, 7 days a week
Call now, 24/7- We find and fix the moisture source, not just the stain
- Containment and HEPA filtration to keep spores out of clean rooms
- Homes and commercial properties across Los Angeles
Mold Remediation Los Angeles Experts
527 W 7th St #1495, Los Angeles, CA 90014
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