| Business | Phone |
| A C Development Co 1123 S Westridge Ave, Glendora 91740 | (626) 914-3641 |
| Herwood Construction Po Box 933, Glendora 91740 | (626) 335-0680 |
| Kac Corp 112 N Glendora Ave # 104, Glendora 91741 | (626) 339-4889 |
| Perera Construction 1000 W Foothill Blvd, Glendora 91741 | (626) 963-4155 |
| Siwi Inc Po Box 1415, Glendora 91740 | (626) 963-7643 |