In New Jersey, mold complaints are primarily addressed through a combination of tenant-landlord communication, local building code offices, and potentially the New Jersey Department of Health (NJDOH) or Community Affairs (NJDCA).
The Middletown Building Dept. code can only address structural issues like leaks that contribute to mold, but there are no specific local mold regulations.
For mold remediation services in your residence, you'll need to contact a qualified mold remediation company. NJDOH offers guidance that can be found here.
If you are a renter who has not been able to remediate a mold issue with a landlord, please contact the NJDCA at 609-376-0802.