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North Hills, CA (91343) • Central San Fernando Valley

Mold Inspection in North Hills, CA

Independent, certified professional mold inspectors serving the North Hills, CA 91343 community. Test-only — we never sell remediation to ensure unbiased recommendations.


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Your Friendly Test Only Inspector - Tanjun Mold Inspections

North Hills Mold Inspection & IAQ Testing Professionals

Check your North Hills (91343) home, townhome, or rental property from hidden plumbing leaks, attic condensation, and air quality concerns. Schedule your Test-Only inspection.

Call Your Test-Only Inspector (818) 964-1533

Local Housing & Environmental Insights • 91343

North Hills Housing & Mold Risk Factors

Mid-Century Ranch Homes, Townhomes & Multi-Family Properties

Located in the heart of the central San Fernando Valley, North Hills, CA (91343) features a mix of 1950s–1970s single-family ranch residences, expanded family homes, and multi-family townhome and apartment communities between the I-405 and Roscoe, Nordhoff, and Parthenia corridors.

Many mid-century North Hills homes sit on concrete slab foundations or older raised crawl spaces with aging copper and galvanized plumbing lines. Under-slab pinhole leaks, converted garage additions lacking vapor barriers, and shared plumbing stacks in multi-unit buildings can allow moisture to accumulate silently behind drywall and flooring.

Under-Slab Copper Pinhole Leaks Mid-century slab-on-grade homes in North Hills can develop slow hot- or cold-water line leaks beneath concrete slabs, wicking moisture up into baseboards and drywall.
Attic HVAC Condensate & Duct Sweating Heavy summer air-conditioning use puts strain on attic drain pans and condensate lines, leading to overflow or condensation above hallway and bedroom ceilings.
Santa Ana Wind & Winter Storm Roof Intrusion Dry heat and seasonal winds degrade roof flashings, skylight seals, and stucco perimeters, creating entry points during Southern California winter rainstorms.
Garage Conversions & Room Additions Unpermitted or older converted garages and enclosed patios frequently lack proper slab vapor barriers, insulation, or exterior drainage grading.
Aging Bathroom Shower Pans & Supply Valves Original tile shower pans, worn tub surrounds, and aging angle-stop valves behind sinks and toilets are frequent sources of hidden wall-cavity moisture.
Multi-Family Shared Plumbing & Laundry Lines Townhomes and apartment buildings in 91343 often experience water intrusion from upper-unit washing machines, water heaters, and shared drain stacks.
Baseboard & Lower-Wall Slab Moisture Slow under-slab or exterior sprinkler water intrusion often causes swollen baseboards, peeling paint, and damp drywall along slab edges.
Ceiling Stains Below Attic Air Handlers Overflowing condensate pans or uninsulated supply ducts in hot attics frequently lead to hidden ceiling drywall dampness above hallways and bedrooms.
Bathroom & Kitchen Wall-Cavity Growth Deteriorated shower pans, worn tub caulking, and slow under-sink drain leaks often saturate drywall backing and cabinet bases out of sight.
Converted Garage & Addition Musty Odors Enclosed patios and converted garage living spaces without vapor barriers frequently develop elevated relative humidity and earthy odors.
Rental Property & Condo Water Intrusion Questions Shared plumbing stacks, HVAC vent buildup, or past roof leaks in multi-family properties often require neutral, AIHA-accredited lab data—see our guide on "Free" Remediation Quotes vs. Paid Mold Testing.

Check your North Hills property from hidden plumbing leaks, attic moisture, and air quality risks. Schedule an unbiased inspection today.

Your Friendly Technical Interpreter. Test-Only

Mold Inspection & Testing Services in North Hills, CA

Home Mold Inspections

Mold Inspections

Visual inspections that may include moisture content readings, humidity measurements, and checking common areas where moisture intrusion is often a risk. Includes a detailed written report with findings and recommendations.

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Air & Surface Lab Testing

Lab Testing

Our professional mold samples are analyzed by an AIHA-accredited laboratory, with standard results typically available within 2 business days. Rush processing, including next-business-day reporting, is available for an additional fee.

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Indoor Air Quality Testing

Indoor Air Quality Testing

Evaluate airborne mold spores, species detected, and ambient air quality. When appropriate, wall cavity air sampling may also be performed.

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Post-Remediation Clearance

Post Remediation Clearance Testing

PRV (Post Remediation Verification) or Clearance Testing services involve independent verification and testing to ensure mold remediation was successfully completed.

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Real Estate Mold Inspections

Pre-Sale Home Inspections

A vital aspect for performing due diligence during real estate transactions, Tanjun Mold Inspections offers pre-purchase and pre-sale inspections for buyers, sellers, and agents in North Hills and nearby San Fernando Valley communities.

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Water Damage & Moisture

Water Damage Assessments

Promptly identify hidden moisture and potential mold growth after leaks, floods, or plumbing failures to minimize damage.

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Residential Inspection & Testing - Starting Prices

Prompt turnaround times, detailed reports, and friendly, easy-to-understand explanations.

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Standard Home Mold Inspection

$350+

Base fee starting at $350 for homes up to 1,500 sq. ft.

AIHA Lab Testing Samples

$95

Per air or surface sample analyzed by an AIHA-accredited lab.

Indoor Air Quality (IAQ) Only

$440+

Starting at $440 for targeted air quality only visit & lab report.

Post Remediation Clearance

$550+

Starting at $550 for independent PRV visual, moisture & air testing.

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Schedule Your North Hills Mold Inspection

If you’re buying a home, noticing a musty odor, or dealing with recent leaks or past water damage, a professional mold inspection can help you make informed decisions.

Professional mold inspections and Indoor Air Quality Testing in North Hills, CA (91343) can help you identify potential risks early on to maintain a healthy indoor environment — with accurate, reliable results you can trust.

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EDUCATOR. NEIGHBOR. SPECIALIST.

Why Customers Choose
Tanjun Mold Inspections

Educator

Your Friendly Tech Interpreter

Your Friendly Test Only Inspector - Tanjun Mold Inspections

"Takes Time to Teach..."

We take time — to provide a friendly and understandable explanation of the inspection findings and the technical details of the report to customers — who are not lab techs.

Neighbor

Your Local Small Business

Your Friendly Small Business - Tanjun Mold Inspections

"Opposite of Corporate..."

Since we're not a chain or franchise — we are not under pressure to meet corporate sales quotas. Instead, we invest in the time and personal attention needed for each unique job.

Specialist

Your Certified Lab Service

Your Certified Lab Service - Tanjun Mold Inspections

AIHA Certified

All air and surface samples are logged and processed utilizing trusted, independent AIHA-accredited laboratories with secure chain-of-custody protocols. Reliable data — means informed decisions.

AIHA LAP Accredited Laboratory Logo Badge

Samples are sent to an AIHA (American Industrial Hygiene Association) accredited laboratory that specializes in environmental microbiology.

ENVIRONMENTAL MICROBIOLOGY


Lab Reports

What Kind of Information is Contained in Lab Reports?

They provide very technical and detailed information that we analyze and summarize so that it is more friendly and useful to our customers.

The lab analysis will report on any mold found, the amount and the mold types detected (such as Aspergillus/Penicillium, Stachybotrys, Chaetomium, Ulocladium). We determine whether the sample indicates:

  • NORMAL FUNGAL ECOLOGY An indoor environment that reflects a normal fungal ecology
  • SETTLED SPORES An indoor environment that is contaminated with some settled spores
  • ACTUAL GROWTH An indoor environment that is contaminated with actual mold growth and associated spores
FUNGAL DICTIONARY

What are common mold types found indoors?

Select a mold genus below to review its environmental characteristics and common indoor substrates.

Lab technician holding petri dish with mold growth analysis
Alternaria

Alternaria is one of the most common molds and is abundant worldwide. This genus contains around 40 to 50 different species, only a few of which are commonly found indoors. Alternaria spores are easily dispersed through the air by wind. Alternaria can grow on a variety of substrates indoors when moisture is present.

Cladosporium

Cladosporium is an abundant mold worldwide and is normally one of the most abundant spore types present in both indoor or outdoor air samples. This genus contains around 20 - 30 different species. Cladosporium produces dry spores that are formed in branching chains. Spores are released by twisting of the spore-bearing hyphae as they dry. Thus, the spores are most abundant in dry weather. Cladosporium can be found anywhere indoors, including textiles, bathroom tiles, wood, moist windowsills, and any wet areas in a home. Some species of Cladosporium grow at temperatures near or below 0(C) / 32(F) and can often be found on refrigerated foodstuffs and even frozen meat.

Penicillium / Aspergillus

Penicillium / Aspergillus are two separate genera of molds that are so visually similar that they are commonly discussed together as a group. Together, there are approximately 400 different species of Penicillium / Aspergillus. Penicillium / Aspergillus produce dry spore types that are easily dispersed through the air by wind. These fungi serve as a food source for mites, and therefore can be dispersed by mites and various insects as well. Penicillium / Aspergillus are found throughout the home. They are common in house dust, growing on wallpaper, wallpaper glue, decaying fabrics, wallboard, moist chipboards, and behind paint. They have also been isolated from blue rot in apples, dried foodstuffs, cheeses, fresh herbs, spices, dry cereals, nuts, onions, and oranges.

Chaetomium

Chaetomium is a common mold worldwide. This genus contains around 80 - 90 different species. Chaetomium spores are formed inside fruiting bodies. The spores are released by being forced out through a small opening in the fruiting body. The spores are then dispersed by wind, water drops, or insects. Chaetomium can grow in a variety of areas indoors, but is usually found on cellulosebased or woody materials in the home. It is very common on sheetrock paper that is or has been wet.

Stachybotrys

Stachybotrys is ubiquitous in nature. This genus contains about 15 species. Stachybotrys produces wet slimy spores and is commonly dispersed through water flow, droplets, or insect transport, less commonly through the air. Stachybotrys is common indoors on wet materials containing cellulose such as wallboard, jute, wicker, straw baskets, and other paper materials.

North Hills, CA (91343) • Local Mold & Housing Insights

North Hills Mold Inspection FAQ

What are the most common causes of hidden mold in North Hills (91343) homes?

Many single-family ranch homes and multi-family properties in North Hills (91343) were built between the 1950s and 1970s on concrete slabs or raised foundations. Common moisture sources include under-slab copper pinhole leaks, clogged attic air-conditioning condensate lines during triple-digit San Fernando Valley summers, and wind-driven winter rain penetrating aged stucco and window seals.

How do San Fernando Valley summer heat and winter rainstorms affect indoor moisture in North Hills?

North Hills experiences extreme central Valley summer heat—which causes air conditioners to run continuously and dry out exterior caulking and roof flashings—followed by sudden winter Pacific rainstorms. Condensation on poorly insulated attic ductwork in summer and wind-driven rain entering dried window or roof seams in winter frequently cause hidden wall and ceiling dampness.

Do you provide unbiased mold testing for North Hills apartments, townhomes, and landlords?

Yes. Because Tanjun Mold Inspections is strictly test-only and never sells remediation, we provide neutral moisture content readings, thermal imaging, and AIHA-accredited lab results for North Hills homeowners, tenants, landlords, and property managers.

How much does a mold inspection cost in North Hills, CA?

A standard home mold inspection in North Hills starts at $350 for homes up to 1,500 square feet. AIHA-accredited lab samples are $95 per sample, Indoor Air Quality testing only starts at $440, and Post Remediation Clearance Testing starts at $550.

FAQ

Mold Frequently Asked Questions

Our Credentials


MICRO Certified Mold Inspector CMI # 86294

InterNACHI (International Association of Certified Home Inspectors) Certified Mold Inspector

Member # NACHI25081826  |  Certificate # 1755634505

IAC2 Certified, IAC2 Mold Certified (International Association of Certified Indoor Air Consultants)

Certification ID: IAC2-95070

Friendly Communications. Lab Backed Data.

Our Process

Tanjun Mold Inspections performing- Professional Performing Visual Inspections

Visual Inspections

We start with performing a visual inspection of the property, focusing on areas where there may be water damage, moisture issues or suspected mold growth.

Tanjun Mold Inspections - Advanced Tools for Taking Environmental Measurements

Environment Readings

With the help of specialized tools we may take environmental readings such as Moisture Content (MC) or humidity levels in order to identify any potential issues.

Tanjun Mold Inspections - Lab Analysis for Mold Samples

Lab Testing & Analysis

Surface and Air samples may be recommended depending on the inspection findings or customer concerns. Such samples are sent to an AIHA Accredited Lab that specializes in identifying and analyzing mold.

Tanjun Mold Inspections Providing a Comprehensive Findings and Recommendations Report

Findings & Recommendations

Once all of the data is collected, we provide a report of our findings. If a mold growth problem is identified, a Remediation Protocol is outlined.

CONTACT US

Our Process - Advanced Tools for Taking Environmental Measurements

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PHONE Call (818) 964-1533

EMAIL tanjunmold@gmail.com

SERVICE AREAS

Los Angeles County, CA

Ventura County, CA



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