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TRUSTED BY PACIFICA, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon10
    Verified biohazard remediation services reviews

Top-Rated Biohazard remediation specialists in Pacifica - Updated Nov 2026

Avatar for Bio 911
Bio 911
5.0(
17
)
Mold & Toxic Material TestMold & Toxic Material Test - For BusinessToxicity and Mold - Removal

Serving Pacifica, CA and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"We spent some time live with molds and we don’t know it was mold. We are trying 2 times to clean it out with some cleaning companies, but it was useless. Finally we got lucky with Bio 911- very professional, sharp, deeply attentive for details, even for our lifestyle depending on appearance of mold and compared with other not expensive. Thank you very much for Bio 911 and personally Kirill for outstanding work."
Mold contamination due to roof leak
Bird droppings contamination
Bird carcasses and bird droppings
Bird droppings contamination
Mold contamination due to roof leak

+29

Response time8 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for Moisture & Restoration Consultants, LLC
Moisture & Restoration Consultants, LLC
4.8(
61
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Pacifica, CA and surrounding areas

Approved

In business since 1994

Emergency services offered

Warranties offered

"Dave was super helpful and steered me toward the real solution I needed -- not testing but direct remediation of a leaking window and wall. His experience really helped get the job done and to calm my nerves after I discovered the leak!"
Mold Remediation Project
Master Bathroom
Master Bathroom
Hall Bathroom
Hall Bathroom

+27

Response time4 hrs
11 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Mold Remedies
Mold Remedies
4.4(
30
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Pacifica, CA and surrounding areas

Approved

In business since 2002

Free estimates

Small jobs welcome

"I found Mold Remedies online and called them up and spoke and met with Richard. We made an appointment the very next day for him to inspect our mold problem. He was prompt and courteous, and he gave us great advice on how to address the issue. He did not charge us, as he told us we could fix the issue on our own. I like that -- he was trustworthy, fair and honest. I will hire him in a minute if I have a big mold issue in the future. (He also coincidentally took care of our neighbor''s home, who had a large mold issue, and they were very happy.)"
Mold Inspection
Mold Inspection
Mold Inspection
Mold Inspection
Mold Inspection

+2

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Quality Air Environmental Consulting, LLC
Quality Air Environmental Consulting, LLC
4.9(
10
)
Mold & Toxic Material Test - For Business

Serving Pacifica, CA and surrounding areas

Approved

In business since 2019

Free estimates

Customers say: Quality work

"After the review I received a message from Brad and he was extremely professional and thoroughly explained why I required more samples due to the different textures and materials on my wall. I really appreciated that!"
Asbestos Testing in skyscraper
Private Residence Floor Survey
Response time1 day
Recommended by100%of homeowners
Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Hazardous Waste Removal

Serving Pacifica, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"Mike was our representative. Mike was our representative and everything he said there was to be done. They did absolutely wonderful and Mike was a really really good guy and thank you for that. I am very pleased and what they did and all the cleanup was done absolutely great thank you so much for the workmanship and all the people that you have working for you what they did for me was very professional very nice thank you again."
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+1

Response time6 hrs
Recommended by17%of homeowners
Avatar for Mold Test Company Central CA
Mold Test Company Central CA
4.0(
90
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Pacifica, CA and surrounding areas

Approved

In business since 2015

Emergency services offered

Small jobs welcome

"This was not the first time using an Air Quality inspection company. They were help full, accessible, timely, accurate, and provided an analysis report that included a representative to review and answer questions. They also provided a referral to a remediation company that approached the issue in an efficient and cost effective manner."
Attic Ceiling
Drywall
Drywall
Insulation
Insulation

+66

Response time10 hrs
136 neighbors recently requested a quote
Recommended by85%of homeowners
Home Pro Remodeling & Construction, Inc.
4.1(
31
)
Hazardous Waste Removal

Serving Pacifica, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"I had my garden and bathroom remodel done. Albert and Samuel were professional, friendly, and a delight to work with. They're responsive and reliable. I also like the subcontractors whom they used on my project. They kept me informed of everything and I appreciate their excellent work."
Response time5 days
Recommended by77%of homeowners
Avatar for Bay Area Inspection Services LLC
Bay Area Inspection Services LLC
4.8(
6
)
Mold & Toxic Material TestMold & Toxic Material Test - For Business

Serving Pacifica, CA and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"I had a great experience working with Bay Area Inspection Services LLC. The inspectors were very knowledgeable and took the time to explain all findings in a simple and clear way. They were punctual, professional, and respectful throughout the process. The report was detailed and delivered quickly. I would definitely use their services again."
Moisture Scan Sunnyvale
Moisture Scan Sunnyvale
Moisture Scan Sunnyvale
Gas Leak Detection MV
Gas Leak Detection MV

+10

5 neighbors recently requested a quote
Avatar for MG Remediation, Inc.
MG Remediation, Inc.
3.3(
8
)
Radon Gas - Abatement

Serving Pacifica, CA and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: Quick response

"Peter and his team at MG Remediation are professionals. They did everything they told me they would do and the radon levels dropped significantly. Great communication, too, which always matters."
Vapor Intrusion for VOC and Radon
 Cleaning
 Cleaning
Testing
Testing & Abatement

+4

Response time4 days
Recommended by80%of homeowners
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Biohazard Remediation FAQs, answered by experts

Yes, brown spots on a ceiling are usually caused by water leaks and can lead to mold growth, especially if you don’t correct the underlying problem. Ongoing water leaks and moisture issues will almost always result in mold growth, especially if you live in a warm climate. Mold is a health hazard, so get the root problem fixed quickly, clean it, and encapsulate the area to avoid mold formation.

Mold mites will usually not go away on their own, as long as there continues to be a source of food for them. To ensure that they go away and to keep them from returning, you'll need to get rid of the mold or any other food source. Even if you successfully remove an infestation, more mites are likely to return if you don't get rid of the mold.

The time it takes to remove mold from under silicone caulk depends on the severity of the mold infestation and the cleaning method used. The cleaning process itself can take a few hours, including the time needed for cleaning agents to sit and work on the mold. If re-caulking is required, additional time will be needed for removing old caulk, applying new caulk, and allowing it to cure, which can take up to 24 hours.

It is generally safe to stay in a house that smells like sewage for a short time, but you should get the problem fixed as soon as possible. While the level of sewer gas is usually low enough to only cause minor symptoms, prolonged inhalation can lead to headaches, nausea, or respiratory irritation. High levels of gas exposure can be more dangerous, and high concentrations of methane—a component of sewer gas—can pose an explosion risk in enclosed spaces. If you smell sewer gas in your home, ventilate the area and call a professional to locate, assess, and fix the problem, as it will not go away on its own.

According to the EPA, mold grows within 24 to 48 hours if left untreated after a water leak. So unless you notice the leak and stop it right away, you only have a day or so before mold is a real concern. If you don’t notice the leak, it can take about three weeks for the mold spores to become visible. That means you’ve likely had an active mold infection for a few weeks by the time you notice discoloration.

The Pacifica, CA homeowners’ guide to biohazard remediation services

From average costs to expert advice, get all the answers you need to get your job done.