| Business | Phone |
| Cosa Marbel Co 13040 San Fernando Rd, Sylmar 91342 | (818) 364-8800 |
| Foothill Marble & Granite 12300 Foothill Blvd, Sylmar 91342 | (818) 686-1450 |
| International Stone Network 12420 San Fernando Rd, Sylmar 91342 | (818) 833-3198 |
| Walker Zanger Inc 1390 Telfair Ave, Sylmar 91342 | (818) 504-0235 |