Royal Water

Royal Water holds a 5-star rating across 104 Google reviews, which matters in Philadelphia where older homes (median built 1948) and the city's 68% average humidity create ideal conditions for mold growth. With 42 inches of annual rainfall, moisture problems are common, and finding a contractor with that level of consistent customer satisfaction gives you confidence that the work will be done right. Most remediation projects in the area run between $1,500 and $4,500, so you'll want a contractor you can trust.

Pennsylvania doesn't require a statewide mold remediation license, so before you hire anyone, verify they hold IICRC certification and carry both general liability and pollution liability insurance. These credentials protect you and ensure the contractor follows industry standards. Ask to see proof of these qualifications in writing, and don't proceed without it.