AC ducts and air handlers
Attic ducts and air handlers run cold for most of the year. A clogged condensate drain or a poorly sealed duct can sweat onto insulation and ceiling drywall below.
AC and HVAC moldMold Remediation in Portland, TX
Portland sits on the north shore of Corpus Christi Bay, across the water from Corpus Christi, TX, and breathes the same humid Gulf air. Corpus Christi Mold Remediation is a free quote service, not a mold company. Describe the problem once and independent local mold companies can reply with quotes.
Get a Free Quote Call (361) 247-3040
A bayfront city with a mix of older and newer homes
Portland is primarily in San Patricio County, with some portions extending into Nueces County. It was established in 1890 by John G. Willacy. The Census Bureau's July 1, 2025 estimate puts it at 20,833 residents.
The American Community Survey (ACS 2020–2024 5-year) describes the housing this way:
- Median year built: 1987
- About 43% of homes built before 1980, and about 35% built in 2000 or later
- 63.1% owner-occupied, with a median value of $234,800
- Mobile homes are rare, about 1.4% of units
That mix means two different kinds of mold calls. Older homes carry decades of roof and plumbing repairs; newer slab homes often have ducts in a hot attic.
Storms in Portland's history
Dated events from the National Weather Service, the National Hurricane Center and FEMA. None of this means a given home has mold; it explains why roof and window repairs are common here.
| Year | Event | What the record says for Portland |
|---|---|---|
| 1916, 1919 | Two hurricanes | Both added to the toll on the young town (local history). |
| Aug. 3, 1970 | Hurricane Celia | The NWS Corpus Christi office reports that 90 percent of Portland homes and businesses suffered damage, with an estimated gust of 160 mph at Portland. |
| Aug. 25–26, 2017 | Hurricane Harvey | The NHC lists the eastern part of San Patricio County among the areas of extreme wind damage. A Portland weather station recorded a 64 kt gust. San Patricio County is in federal declaration DR-4332. |
Where Portland mold calls usually start
The Corpus Christi airport station averages about 32 inches of rain a year, with September the wettest month, about 123 days a year at 90°F or hotter, and summer dew points averaging about 74°F (NOAA 1991–2020, Corpus Christi International Airport). As general building science, any surface cooler than the dew point can collect condensation.
Attic roof decking
Small roof leaks and bathroom fans that vent into the attic can wet the decking slowly. Spotting often shows up near vents and valleys before a ceiling stain appears.
Attic moldBehind the drywall
Supply-line drips, window leaks and old storm repairs can wet the back of drywall. A musty closet on an exterior wall is a common first clue.
Wall and drywall moldRules and permits for Portland jobs
Texas mold rules. Texas requires TDLR licenses for mold assessment and remediation work on 25 or more contiguous square feet (Occ. Code §1958.101–.102). Verify any company at tdlr.texas.gov/LicenseSearch. In Texas, the company that assesses your mold and writes the protocol cannot be the company that removes it on the same project, and one owner can't hold both (Occ. Code §1958.155). Ask for the Certificate of Mold Damage Remediation (TDI form MDR-1) at the end of a licensed job.
Mold cleanup itself usually isn't permitted work, but rebuilding often is. Portland issues its own permits, so check with the City of Portland building department before drywall, roofing or plumbing is replaced. San Patricio County is on the Texas coast, and if mold work uncovers roof-deck, framing or window damage, the rebuild may need a TDI windstorm inspection (WPI-8) to keep TWIA eligibility. Your rebuild contractor should confirm.
Published national estimates put an attic job at $1,500–$9,000 (Fixr, Aug 2025) or $1,000–$4,000 (This Old House, Mar 2026). See the Corpus Christi mold remediation cost guide for the full table. Quotes come from independent companies, not this site.
Portland mold questions
Is Portland part of Corpus Christi?
No. Portland is its own city, primarily in San Patricio County with some portions in Nueces County, on the north shore of Corpus Christi Bay and Nueces Bay. Texas mold licensing rules are the same statewide, but permits for any rebuild after mold work come from the City of Portland, so check with its building department before walls, roofs or ceilings are replaced.
My Portland home was built in the 2000s. Why would it have mold?
Age matters less than water. About 35% of Portland's homes were built in 2000 or later (ACS 2020–2024), and newer homes can still get mold from a clogged AC drain, a sweating duct in a hot attic, a small roof leak or a plumbing drip inside a wall. A mold assessor can trace the moisture source before anyone quotes removal.
Who should look at mold in my Portland home first?
For a larger problem, a licensed mold assessment consultant usually comes first. The consultant inspects, finds the moisture source and writes a protocol. A different licensed remediation company then quotes and does the work, because Texas does not allow one company to do both on the same project. For a small patch under 25 contiguous square feet, you can clean it yourself or hire anyone.
Nearby areas
For every town, see service areas.
Get mold quotes in Portland, TX
Tell the form where you see or smell mold, roughly how big the area is, and whether it followed an AC, roof or plumbing problem. Independent companies that work in Portland and Corpus Christi, TX can reply with quotes.
Corpus Christi Mold Remediation is a free referral service. The independent companies that reply may pay to receive requests, and companies reply on their own schedules. Prefer to talk? Call (361) 247-3040
Found mold or a musty smell? Get free quotes.
Describe it once and independent mold companies serving Corpus Christi and the Coastal Bend can reply with no-obligation quotes.