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TRUSTED BY SPRING VALLEY, CA HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon13
    Verified mold testing and remediation services reviews

Top-Rated Mold testing and remediation specialists in Spring Valley - Updated Nov 2026

Avatar for Cal Coast Water Damage
Cal Coast Water Damage
5.0(
23
)
Toxicity and Mold - RemovalMold & Toxic Material Test - For BusinessToxicity and Mold - Removal - For Business

Serving Spring Valley, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Cal Coast communication through the whole process was what I needed. I didnâ t know the questions I should ask. I was scared and nervous. Iâ ve never been through this before. Cal Coast took care of everything and problem solved for me throughout the whole process. Not only did he do the water mitigation and mold removal, I hired him to do the put back as well. Everything was done on time. I highly recommend them."
Living Room - PRE
Living Room - Post
Whole House Mold
Whole House Mold
Whole House Mold

+4

Response time8 hrs
Response rate97%
4 neighbors recently requested a quote
Pacific Environmental & Abatement Solutions Inc
4.6(
10
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business+2 more

Serving Spring Valley, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"The tester was well versed in this area even showing the areas that were high in moisture. Very friendly and informative as well as professional. Made me comfortable with the experience she had. When the owner and maintenance worker failed she made me comfortable. Fae who had the credentials as well experience explained everything in detail. Definitely use Fae!!!"
1 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Risk Free Serv Water Damage Repair San Diego
Risk Free Serv Water Damage Repair San Diego
5.0(
7
)
Toxicity and Mold - RemovalToxicity and Mold - Removal - For Business

Serving Spring Valley, CA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"The two gentlemen from Risk Free Serv were knowledgeable and professional. They worked well together and took care of my home as if it were their own. They found mold behind the bathroom vanity and kept me informed of the process as they removed the mold, vanity, and drywall. I appreciated that they didn't try to charge me for unnecessary services as some other companies did."
Dishwasher overflow 1
Dishwasher overflow 2
Dishwasher overflow 3
Dishwasher overflow 4
Dishwasher overflow 5

+5

Response time4 hrs
Recommended by100%of homeowners
Avatar for HOME RESTORATION LLC
HOME RESTORATION LLC
5.0(
3
)
Toxicity and Mold - Removal

Serving Spring Valley, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"I recently hired Home Restoration for mold remediation, and I couldn?t be happier with the results. The team was friendly, professional, and really cared about making sure everything was done right. They made a stressful situation so much easier?highly recommend them!"
 (BURST WATER HEATER)
 (BURST WATER HEATER)
 (BURST WATER HEATER)
 (BURST WATER HEATER)
 (BURST WATER HEATER)

+4

Response time5 hrs
Response rate100%
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Mold Testing and Remediation FAQs, answered by experts

The purpose of crawl space encapsulation is to prevent mold by blocking moisture and reducing humidity. If the vapor barrier is properly installed, it significantly reduces the chance of mold developing within the crawl space. However, mold can sometimes grow behind the encapsulation material, but it will be sealed away from the main area. Additionally, moisture can still condense inside the encapsulated space, so if you notice excess humidity, installing a dehumidifier is recommended to prevent mold and mildew growth.

It is not advisable to stay in a house with black mold. Exposure to black mold, or any mold, can lead to health problems, especially for vulnerable individuals such as children, the elderly, or those with weakened immune systems. Black mold produces mycotoxins, which can cause respiratory issues, skin irritation, fatigue, and headaches. If black mold is detected, it is crucial to evacuate the premises, seek professional help for remediation, and only return once the area is thoroughly cleaned and confirmed mold-free by experts.

Checking for mold yourself is crucial, as catching mold in the early stages is ideal. Mold can appear green, brown, black, blue, or yellow. It can smell musty and can feel like velvet, leather, or cotton. 

Most often, mold grows near water damage. It’s best to inspect these places for signs of mold growth:

  • Basement: Look in corners, windows, carpet, closets, and around appliances. 

  • Bathrooms: Check around sinks, ceilings, and around toilets. 

  • Kitchen: Inspect around the sink, behind the refrigerator, and behind trash can.

  • Attic: Look near the insulation and near intake and exhaust vents.

Yes, a refrigerant leak is extremely toxic and dangerous to breathe. Refrigerants can displace oxygen in a room, which can lead to suffocation, loss of consciousness, serious health issues, and even death. You may also suffer from refrigerant poisoning, which can cause symptoms like headaches, nausea, dizziness, swelling of the throat or sinuses, vision loss, and a burning sensation in your eyes, ears, nose, lips, and tongue. If you experience any of these symptoms, you should seek medical attention immediately. In addition, refrigerant leaks are toxic to the environment and can cause permanent damage to the ozone layer.

Yes, mold can grow in a wet dryer vent. Mold is a type of fungi, and fungi thrive in warm, moist conditions. Dryer vents need to be aired out so heat can escape and moisture can dry. If your dryer vents aren’t properly vented, the trapped heat and moisture will cause mold to grow, and the mold can spread to the dryer and even your clothes. Not only can this leave a musty smell on your freshly laundered clothes, but—more importantly—it also poses a health risk.

The Spring Valley, CA homeowners’ guide to mold testing and remediation services

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