Mold Testing in Pasadena
Pasadena has one of the largest collections of early-1900s Craftsman homes anywhere, and the crawlspace under a hundred-year-old bungalow is where hidden moisture most often turns up. We inspect and report; we never do removal. A standard inspection is $495 for up to 2,000 sq ft.
What makes older Pasadena homes prone to mold?
Runoff from the San Gabriels matters on the north side of town (more on that on our Pasadena & Foothills page), but the age of the houses is the bigger factor:
Crawlspaces
Bungalows built between about 1905 and 1920 almost always sit on raised foundations. Ground moisture, plumbing drips and poor venting under the floor can keep joists damp for years.
A century of remodels
Kitchens and baths in old houses have been redone several times, often with new fixtures tied into old drain lines. The joints between old and new are common leak points.
Original windows and built-ins
Wood sash windows and built-in cabinets on exterior walls trap condensation and stay cool, which suits mold on the back of the wood.
Where does mold usually show up in Pasadena homes?
- Subfloor and joists below bathrooms and kitchens
- Backs of built-in cabinets and closets on exterior walls
- Wood window sills and sash on north-facing walls
- Attic sheathing above old bathroom fans that vent into the attic
Neighborhoods we serve in Pasadena
Mold testing in Pasadena: FAQs
How much does mold testing cost in Pasadena?
$495 covers the living areas of a home up to 2,000 sq ft, with surface samples at $125 each including the lab. Crawlspace inspections are quoted separately because access in older homes varies. Full cost guide
Is staining on old crawlspace framing a problem?
Not necessarily. Dark staining on hundred-year-old joists is often historic. What matters is whether the wood is wet now, which is what moisture readings tell you.
My bungalow smells musty near the floor. Where should I look?
A smell strongest near the floor or in closets usually points to the crawlspace. Check for plumbing leaks under bathrooms and the kitchen, and for standing water after rain.
Independent mold testing in Pasadena, from $495.
Mon–Sat, 8 am – 6 pm. Scope and price confirmed before you book.