| Business | Phone |
| Amos Waterproofing & Surfacing 21610 Lassen St # 7, Chatsworth 91311 | (818) 772-5394 |
| Art Deck Professional Waterprf 9749 Variel Ave, Chatsworth 91311 | (818) 350-0777 |
| Danielj Mc Nicoll Consulting 21822 Lassen St # L, Chatsworth 91311 | (818) 701-7801 |
| Gary Willison Shower Pans Chatsworth 91311 | (818) 882-9293 |
| J R Darnall Assoc Inc Chatsworth 91311 | (818) 727-1876 |