| Business | Phone |
| Basement Doctor Waterproofing 825 N Hammonds Ferry Rd, Linthicum Hts 21090 | (410) 636-2425 |
| Budget Basement Waterproofing 529 S Camp Meade Rd # 106b, Linthicum Hts 21090 | (410) 766-0177 |
| Metro Sealants & Waterproofing 1041 W Nursery Rd, Linthicum Hts 21090 | (410) 789-7400 |