Local specialist network
How MoldFixer Works
MoldFixer is a free service that connects San Diego County property owners and renters with local mold remediation specialists. You call, we work out what you are actually dealing with, and if it needs a visit we put you in front of a specialist who knows your area. There is no cost to you for that, and no obligation.
- Free to the homeowner
- IICRC S520 protocols
- 34 San Diego service areas
- Answered 24/7
- 34 across the countyAreas covered
- IICRC S520Standard followed
- Answered 24/7Phone line
- Free, no obligationConsultation
Our approach
What we believe about mold work
Water first, mold second
Every mold job is a water job. Before anything is removed we establish where the water came from and how far it went, using moisture meters, thermal imaging, psychrometric readings and cavity access. That step decides the real cost of the job, and skipping it is why so much mold work has to be repeated.
Instruments, not opinion
The removal boundary is set by moisture readings against a dry standard established from unaffected material of the same type. Drying is finished when logged readings say so, not when a surface feels right. You get the readings.
Containment is not optional
Cutting into a colonised cavity without negative pressure and HEPA filtration spreads spores through the building. It is the clearest dividing line between remediation and demolition, and it is the thing most often missing from a cheap quote.
You will be told when not to buy something
People are routinely told that species testing will not change their job, that duct cleaning is not their problem, that their claim sits below their deductible, or that a $25 timer switch on a bathroom fan will do more than any contractor could. That is not generosity — in a county this size, referrals are the whole business.
Step by step
What happens after you call
The call — two minutes, free
You describe what you are seeing, smelling and when it started. You get a straight read on how urgent it is and what it most likely is. A good share of these calls end with “check your bathroom fan and call back if it does not improve” — and that is a successful call.
Matching, not a lead auction
If it does need a visit, we match you to a specialist who works your area and your property type. A 1920s Ocean Beach crawl space and a 1970s Clairemont slab leak are different jobs, and the right person for one is not automatically the right person for the other. Your details do not get sold on to a list.
The assessment
The specialist inspects with moisture meters, thermal imaging and cavity access where needed, identifies the water source, and gives you a written scope and a written estimate. Nothing on this site is a quote; the estimate is.
You decide
You hire the specialist directly and pay them directly. If the estimate is not right for you, you are not committed to anything, and you can call us back for a second option.
The work, and the paperwork
Containment, controlled removal, documented drying and verification before anything is closed up, to the IICRC S520 standard. You keep the close-out package: photographs, daily moisture logs, source determination and verification — which is what an insurer, a buyer or an HOA will ask for.
Due diligence
Licensing, and what to ask before you hire anyone
California does not issue a mold-specific contractor licence. What it requires is that work over $500 be performed by a contractor licensed by the Contractors State Licence Board, and that worker protection follow Cal/OSHA rules. The meaningful technical credentials in this field are the IICRC certifications tied to the S520 standard for professional mold remediation and the S500 standard for water damage restoration.
Because the licensing bar is low, the practical way to assess any mold contractor in San Diego is to ask four questions before you hire — and these apply to anyone we put in front of you just as much as to anyone else:
- What is your CSLB licence number? Check it yourself at cslb.ca.gov — it takes thirty seconds and shows licence status, bond and workers' compensation.
- Will I get a written remediation plan before any demolition? Scope, containment design, equipment and drying goal, in writing.
- How will you decide the removal boundary? The answer should be moisture readings against a dry standard, not a visual estimate.
- Can I see a sample close-out package? Photographs, daily moisture logs and post-remediation verification. If that does not exist, the work cannot be proven later.
If the answers are vague, keep calling. That is true whether the number you dial is ours or someone else's.
Standards
The standards this work is measured against
Mold remediation is not a licensed trade in California in its own right, which means there is no single certificate that tells you whether a job was done properly. What exists instead is a set of published standards and codes, and every recommendation on this site is written against them rather than against opinion. They are worth knowing by name, because quoting one of them changes most conversations.
- IICRC S520
- The reference standard for professional mold remediation. It is what defines containment, negative air pressure, the removal boundary, HEPA filtration and post-remediation verification. A scope of work that cannot be read against S520 is not a scope of work, it is an estimate.
- IICRC S500
- The standard for professional water damage restoration, and the source of the water categories 1, 2 and 3. It is the reason storm or flood water means porous material comes out rather than being dried in place — the single most consequential distinction on a water loss.
- California Health & Safety Code 17920.3
- Defines substandard housing and expressly includes visible mold growth other than minor surface growth from normal use. This is the provision that makes mold a code matter rather than a matter of taste.
- California Civil Code 1941.1 and 1941.7
- The implied warranty of habitability for rentals, and the landlord's obligations once notified. Dampness and mold sit inside the habitability standard, and notice in writing is what starts the clock.
- The Davis-Stirling Act
- Governs California common interest developments. It sets the default split between association and owner responsibility, and then defers to your own CC&Rs — which is why a condominium question always starts with the governing documents.
- California Department of Public Health guidance
- The state's position that dampness and indoor mold should be remediated regardless of the species present, because the documented health associations attach to dampness and mold generally. It is the reason species testing so rarely changes the work.
- Contractors State License Board
- The licence that actually matters for the remediation and reconstruction. The register is public, it takes under a minute to check a licence number, and it shows bonding, workers' compensation status and any disciplinary history.
Who gets referred
How specialists get onto this line, and what disqualifies one
The value of a phone number is only as good as who is on the other end of the referral, so the criteria are worth stating plainly.
- An active Contractors State License Board licence, verified on the register rather than taken on trust, with current workers' compensation and liability cover.
- Demonstrated familiarity with the specific building types in the area they cover. The crew that is good in a Coronado raised-floor cottage is not automatically the right crew for an El Cajon swamp-cooler tract house or a downtown concrete-frame tower.
- Moisture readings logged daily against a stated dry standard, and a close-out package at the end. Drying is measured or it did not happen.
- A written scope before work, not after. What comes out, what is cleaned, what equipment runs and for how long, and the number.
- Documentation built for a carrier from the first visit where insurance is involved, rather than reconstructed afterwards when the adjuster asks.
- A willingness to tell a caller that nothing needs doing. This is the one that most reliably separates a specialist from a salesperson.
What takes someone off the list: encapsulating or painting over material that has not reached a dry standard, pressure to sign on the first visit, a firm price quoted before anyone has measured anything, air sampling sold before a source has been looked for, and a scope that grows after agreement without a documented reason.
The specialist who attends sets their own prices and is paid directly by you. That is deliberate: it keeps the estimate between you and the person who has to stand behind it, and it means nothing on this site has a reason to inflate a scope.
Editorial
Why this site is written the way it is
Most mold company websites are built around fear. We have tried to write something else: specific, local, and honest about what the evidence does and does not support.
So you will find indicative price ranges rather than “call for a quote”. They are not quotes — no honest number exists before somebody has seen the property — but they will tell you whether you are looking at a $1,500 problem or a $15,000 one, which is what people actually want to know at 11pm.
You will find thirty-four area pages that describe the actual housing stock and moisture mechanics of each neighborhood, because mold in Coronado and mold in El Cajon are genuinely different problems. And you will find a guide that says plainly which health claims the literature supports and which it does not, because we would rather be useful than frightening.
If something here is wrong or out of date, tell us and we will fix it.
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