Mold Remediation

Identify. Contain. Remove. Restore
Professional mold remediation for homes, HOAs and commercial properties throughout Southern California. We address the affected areas and the moisture conditions that allowed mold to grow, then restore your property.
Employee-owned company
IICRC Certified Mold
Serving Southern California
Full Service: Restoration, Contents, Construction
Found mold or
suspect a problem?
If you see mold, notice a musty oldor, or have had water damage, it’s important to tkae the right steps.
1 – Don’t Disturb it
Avoid disturbing moldy areas.
2 – Identify Moisture
Find and stop the source of moisture if possible.
3 – Limit Access
Keep people and pets out of the affected area.
4 – Call a Professional
Let MSB Inspect & evaluate the situation

PROFESSIONAL MOLD REMEDIATION
More Than Just Removing Mold
Mold remediation involves more than cleaning visible mold. At MSB we contain the work area, remove or clean affected materials, address the moisture conditions, and document the process. We follow established industry principles outlined in the ANSI/IICRC S520 Standard.

Common Causes of Mold

Plumbing Leaks

Appliances Leaks

Roof Leaks

Water Damage

Hidden Moisture Inside Walls

High Humidity & Condensation
Signs You May Have a Mold Problem

- Visible mold or discoloration
- Musty or earthy odors
- Post water damage
- Warped or deteriorating building materials
- Recurring moisture or condensation
- Mold discovered during renovation or repairs
When to Call a Professional
- Widespread mold growth
- Mold after significant water damage
- Mold inside walls, HVAC or hidden areas
- Recurring mold despite cleaning
- Commercial or multifamily properties
- When the source of moisture is unclear

The MSB Mold Remediation Process
1
Evaluate
Assess the affected areas and identify moisture sources.
2
Contain
Isolate the work area with barriers and negative air.
3
Control Airflow
Use HEPA filtering equipment to clean the area.
4
Remove & Clean
Remove affected materials and clean salvageable surfaces
5
Address Moisture
Dry the area and correct the moisture conditions.
6
Document & Verify
Provide detailed photos and records of the work.
7
Reconstruct
Restore the property with our in-house construction team.
MSB follows recognized professional mold-remediation practices, including principles established in the ANSI/IICRC S520 Standard. Each project is evaluated individually, and additional requirements may apply based on the building, affected materials, project scope, and local regulations.
Mold Testing
Mold testing is not always necessary. When visible mold or moisture damage already identifies the problem, remediation can often proceed without sampling. When additional assessment or independent verification is appropriate, MSB can work from a qualified environmental professional’s inspection, testing, and remediation protocol.
Not necessarily. When visible mold or clear moisture damage is already present, testing is often not required before remediation begins. California and Los Angeles County health guidance generally recommends focusing first on identifying the moisture source and properly removing affected materials rather than testing simply to determine what type of mold is present. When the extent or source of contamination is uncertain, when documentation is needed, or when a project calls for an independent remediation protocol or post-remediation verification, MSB can work with a qualified independent environmental professional to evaluate the property and establish appropriate testing or clearance criteria. Our remediation work follows recognized professional practices, including the ANSI/IICRC S520 Standard for Professional Mold Remediation.


Why Moisture Control Matters
Mold cannot be successfully addressed without controlling moisture. MSB looks for the source of the problem, helps ensure affected materials are properly dried, and addresses the conditions that could allow mold to return.
Find the source.
The visible mold may not be where the moisture entered. The problem can come from plumbing, roofs, exterior walls, HVAC systems, condensation, or previous water damage.
Correct the condition.
Remediation should address both the mold and the condition that allowed it to grow. Painting over mold, applying a chemical, or removing damaged materials without fixing the moisture source is not a complete solution.
Verify the area is dry before rebuilding.
Before reconstruction, the affected area should be dry and the moisture condition controlled so new drywall, flooring, cabinets, insulation, or finishes are not installed over an unresolved problem.
Property Types
Mold Remediation for All Types of Properties

Residential Properties

HOAs & Multi-Family Communities

Commercial Properties

Luxury & Private Client Properties

Medical Facilities

MINIMIZING DISRUPTION
Keep Life Moving
Our goal isn’t just to dry the building – it’s to keep life moving. Sometimes this takes some creative thinking to make this happen. We isolate affected areas, work around occupants when practical, keep unaffected spaces operational and communicate throughout the project.
Minimizing your disruption and keeping your home or business running as smoothly as possible is a high priority for us. Unfortunately, disruption just can’t be avoided entirely.
One Loss. Many People Involved.

We work with property owner, community managers, residents, tenants, insurance adjusters, plumbers and other trades to keep the project organized and moving forward.
Gather Resources
Pickup vehicle and supplies needed for the day’s projects
Follow the Plan
Your team lead assigns tasks for you to execute
Complete the Day’s Work
Using equipment and materials supplied, make progress on the work
Assist Documentation
Help your team lead document materials used and time spent
Ensure Quality
Follow industry standards, safety procedures and company processes to deliver great results
Ensure Quality
Follow industry standards, safety procedures and company processes to deliver great results
Water damage rarely involves just one decision-maker. Property owners, community managers, residents, tenants, insurance adjusters, plumbers, environmental consultants, trades, and restoration teams may all have a role in moving the project forward.
MSB helps connect those moving parts, keeping communication clear, responsibilities defined, and decisions moving so work does not stall between parties. That coordination helps reduce delays, avoid duplicated effort, minimize disruption, and keep the project progressing as efficiently and cost-effectively as possible—from the initial response through final repairs.
FROM MITIGATION TO RECONSTRUCTION
A Complete Solution…
From Start to Finish
MS8 can handle the entire project – from emergency water removal and drying through repairs and full reconstruction – or just the specific services you need.

Emergency
Response

Water
Extraction

Drying &
Monitoring

Repairs &
Construction
WHY CHOOSE MSB
Trusted Expertise. Proven Results.
Property owners, community managers and insurance professionals choose MSB for our responsive service, industry expertise and ability to handle complex projects from start to finish.
Emergency Response
24 Hours / 7 Days
Ownership:
Employee-Owned
Professional Credentials:
IICRC Certified
Insurance:
Fully Insured & Bonded
Employees:
Background-Checked
Full Service:
Restoration, Contents, Construction

National Network:
CORE Elite Partner
Service Area:
Southern California
Real Stories. Real Results. Real People.
See what our customers are saying about their experience.
I highly recommend MSB Disaster Recovery Services. We have used them numerous times on varying projects. Their expertise in water mitigation, mold remediation, and fast track repairs are unmatched.
Regina Holman is a pleasure to work with and makes the process very simple and stress-free…
Her over 20 years of experience is evident from project start to finish.
MSB has quickly become our main resource for commercial building services in Los Angeles, Orange County, San Diego, and surrounding areas. We appreciate their ability to be flexible and focused on minimizing operating distractions.
They always go above and beyond with fast, reliable service. In several emergency situations we encountered, they were able to respond in less than 2 hours to site.
We highly appreciate our partnership with MSB, their customer service, project execution, and transparency.
Sincerely,
Sustain, LLC
S
Stephanie M, Sustain LLC
Verified Customer
Review from Google
5 stars simply are not enough—I would give 1,000 if I could. Before experiencing a disaster firsthand in my dental office I, never realized how overwhelming, chaotic, and emotionally devastating it could be. I felt completely hopeless and as though I had lost everything. Then Regina stepped in. She took the time to thoroughly explain, step by step, all of the services MSB provides…
She gave me the first glimpse of hope I had felt since the disaster occurred. Regina takes incredible pride in her company, her work ethic, and her team, and it shows in everything she does. She is always at the top of her game. What impressed me most was how quickly they responded. Before I even opened my eyes the next morning, her team was already at my business cleaning up the devastation left behind by the fire.
Mike and Edgar coordinated an extraordinary crew that meticulously cleaned, itemized, documented, and videotaped the damage for my insurance claim. Their air purification equipment eliminated the terrible odor the fire had left behind.
Every single person I encountered was compassionate, professional, and comforting during an incredibly difficult time. They brought a sense of calm and reassurance when everything felt out of control. Beyond their restoration services, Regina also connected me with trusted professionals from her extensive network when my insurance company was not returning my calls.
That level of support went far beyond what I expected. I could write an entire novel about all the incredible things MSB did for my business and for me personally. I wholeheartedly recommend them and am deeply grateful to every member of their team from the bottom of my heart.
Price assessment
Great price
Services
Fire damage cleanup & repair, Service not listed

Cat Guerrero
Verified Customer
Review from Google
MSB has truly become my trusted contractor for my commercial property. After a fire loss to my commercial property in 2018, they came to the rescue and completely restored my building. The thing that sets them apart is their commitment to going the extra mile. They are so much more than just a contractor…
They interfaced with my insurance company, were able to get the best building department expediters (that saved my grandfathered building rights!), engineers, architects to get the job done right and on time.
Also, throughout the restoration process, MSB not only brought my property back to life but also played a crucial role in resolving tenant issues. Their expertise and dedication in handling these challenges made the entire ordeal much more manageable for me.
They handled everything and I was very relieved.
Now in 2023, I’ve asked MSB to return for a commercial property rehab project. Their team is just a phone call away, always ready to help me.
I recommend MSB for their exceptional work, dedication, and their support. They are my go-to choice for all my commercial property needs. I won’t consider calling anyone else. Why would I? I already have the best!
A sincere and heartfelt thank you to everything MSB.

SgtPepprz
Verified Customer
Review from Google
Read more reviews on Google
Areas We Serve

We proudly serve Los Angeles, Ventura, Santa Barbara and Orange counties.


Ventura County

Los Angeles County

Orange County

Santa Barbara County
FREQUENTLY ASKED QUESTIONS
Mold Questions – Answered
Get answers to common questions about mold remediation, the process, insurance and more.
Mold remediation is a controlled process for addressing mold growth, affected building materials, and the moisture conditions that allowed the problem to develop. Simply wiping or spraying visible mold may improve the appearance, but it does not necessarily remove contamination from porous materials or address hidden growth. MSB Building & Restoration uses containment, HEPA filtration, removal and cleaning methods, moisture control, documentation, and reconstruction as appropriate to the project. Our work follows recognized professional practices, including principles from the ANSI/IICRC S520 Standard for Professional Mold Remediation. MSB provides mold remediation throughout Southern California, including Los Angeles, Ventura, Santa Barbara, and Orange counties.
Mold can begin developing relatively quickly when building materials remain wet, which is why prompt drying after a water loss is important. The exact timing depends on the material, temperature, humidity, and how long moisture remains trapped. Drywall, insulation, carpeting, wood, and enclosed wall cavities can all hold moisture that may not be obvious from the surface. MSB responds to water losses throughout Southern California and uses moisture detection, drying equipment, and documented monitoring to help reduce the conditions that support mold growth. If water damage has already occurred in Los Angeles, Ventura, Santa Barbara, or Orange County, addressing the moisture problem early can help limit additional damage.
Not always. When visible mold, a confirmed moisture problem, or obvious water damage already identifies the affected area, testing may not be necessary before remediation begins. In other situations, testing or an independent environmental assessment can be useful when the source or extent of contamination is unclear, when a written remediation protocol is requested, or when independent post-remediation verification is appropriate. MSB can work from the findings and protocol of a qualified environmental professional when needed. Our focus is on correcting the moisture condition, properly remediating affected materials, and documenting the work rather than testing simply for the sake of identifying a mold species.
When mold testing, environmental assessment, or post-remediation verification is appropriate, it is often best performed by a qualified independent environmental professional. Keeping the assessment and verification role separate from the remediation contractor can provide an additional level of objectivity, particularly on larger, more complex, commercial, HOA, multifamily, or disputed projects. MSB regularly works with consultants, property managers, owners, insurance representatives, and other project stakeholders throughout Los Angeles, Ventura, Santa Barbara, and Orange counties. When an independent protocol or verification standard is provided, MSB can perform the remediation work to that defined scope and coordinate the project through completion.
These are intentionally written to be useful first and optimized second. The geographic references are present, but they are not repeated in exactly the same way in every answer, which helps avoid the “SEO-stuffed” feel.
Yes. Mold can develop in concealed spaces when moisture is trapped behind drywall, inside wall cavities, beneath cabinets, under flooring, or around plumbing and HVAC components. Because the growth may be hidden, the first warning signs are sometimes a musty odor, staining, warped materials, or a history of leaks or water damage. MSB Building & Restoration evaluates both visible conditions and the moisture patterns that may point to concealed damage. When needed, affected materials can be selectively opened to determine the extent of the problem and develop an appropriate remediation plan for properties throughout Southern California.
Mold growth is typically the result of excess moisture. Common causes include plumbing leaks, roof leaks, appliance failures, water intrusion, condensation, high indoor humidity, and moisture trapped inside walls or other building materials. In Southern California, mold problems can also develop after slow leaks that go unnoticed for long periods, especially in bathrooms, kitchens, mechanical areas, and exterior walls. MSB looks beyond the visible mold to help identify the moisture source, because remediation is much more effective when the underlying condition is corrected rather than simply treating the surface.
Moisture control is essential because mold will often return if the condition that allowed it to grow is not corrected. Removing affected drywall or cleaning visible mold addresses only part of the problem. A complete remediation approach also includes locating the source of moisture, stopping or controlling it, and drying affected materials to appropriate conditions before reconstruction begins. MSB incorporates moisture detection and drying into its remediation process when needed and documents conditions throughout the project. This helps reduce the risk of rebuilding over an unresolved moisture problem in homes, HOAs, multifamily communities, and commercial properties across Los Angeles, Ventura, Santa Barbara, and Orange counties.
Containment helps separate the remediation work area from unaffected parts of the property so dust, debris, and mold-contaminated particles are less likely to spread during removal and cleaning. Depending on the project, containment may include polyethylene barriers, controlled entry points, HEPA-filtered air equipment, and negative pressure within the work area. MSB uses containment as part of a controlled remediation process when conditions call for it, especially in occupied homes, HOAs, commercial buildings, and multifamily properties. The goal is to protect adjacent areas while affected materials are removed, cleaned, dried, and prepared for verification or reconstruction.
A professional mold remediation project typically begins with evaluating the affected area and identifying the moisture source. Depending on the conditions, MSB may establish containment, use HEPA-filtered air equipment to control airflow, remove contaminated materials, clean salvageable surfaces, dry affected areas, and document the work performed. When an independent environmental consultant is involved, MSB can follow the consultant’s remediation protocol and coordinate with post-remediation verification requirements. Once remediation is complete, MSB can also handle the reconstruction needed to restore drywall, flooring, cabinets, trim, and other finishes.
Whether a material can be cleaned or should be removed depends on the type of material, the extent of contamination, its condition, and the project protocol. Porous materials such as drywall, insulation, carpet padding, and some ceiling materials often cannot be effectively cleaned once significantly affected and may need to be removed. Semi-porous or nonporous materials, including some wood framing, concrete, metal, and finished surfaces, may sometimes be cleaned and retained when appropriate. MSB evaluates the affected materials and follows recognized remediation practices to determine what should be removed, cleaned, dried, or prepared for reconstruction.
There is no single timeline because every mold project is different. A small, localized area may take only a few days, while larger or more complex projects can take significantly longer. The schedule can be affected by the size of the containment area, how much material must be removed, drying conditions, hidden damage, asbestos or lead-related requirements, consultant protocols, post-remediation verification, and reconstruction needs. MSB provides a project-specific scope and works to keep homeowners, property managers, and commercial clients informed throughout the process across Los Angeles, Ventura, Santa Barbara, and Orange counties.
Sometimes, but it depends on the size and location of the affected area, the type of work being performed, and whether the building can be safely separated from the remediation zone. Proper containment can often allow unaffected portions of a property to remain occupied, but certain projects may require temporary relocation or restricted access. This is especially important in homes, multifamily communities, medical or commercial facilities, and properties with sensitive occupants. MSB evaluates access and containment needs on a project-by-project basis and coordinates with owners, managers, and environmental professionals when additional precautions are appropriate.
Mold coverage varies widely by insurance policy and by the cause of the damage. Some policies may provide limited coverage when mold results from a covered water loss, while others exclude or restrict mold-related costs. The best approach is to review the specific policy and discuss the loss with the insurance carrier or adjuster. When insurance is involved, MSB can provide photographs, documentation, estimates, and project records to help clearly explain the conditions found and the work performed. MSB regularly works with homeowners, property managers, adjusters, and other insurance professionals throughout Southern California.
Yes. One of MSB Building & Restoration’s key advantages is that we can manage both the remediation and the reconstruction needed afterward. Once affected materials have been removed, the property may need new drywall, insulation, cabinets, flooring, trim, paint, or other finishes. Rather than bringing in a separate contractor after remediation, MSB can continue the project through restoration and reconstruction. This can simplify communication, scheduling, documentation, and project coordination for homeowners, HOAs, multifamily properties, and commercial clients throughout Los Angeles, Ventura, Santa Barbara, and Orange counties.
Concerned About Mold?
Let’s Take a Look.

Our team can evaluate the situation, explain the next steps, and help restore your property.
