| Business | Phone |
| Goldsmith Construction 2683 Lime Ave, Signal Hill 90755 | (562) 595-5975 |
| Signal Hill Construction 2425 Gundry Ave, Signal Hill 90755 | (562) 424-1210 |
| Coppus Engineering Corp 1196 E Willow St, Signal Hill 90755 | (562) 426-1321 |
| Pipe-Con Construction 1390 E Burnett St # I, Signal Hill 90755 | (562) 424-0675 |
| W W Stephenson Co 1305 E Burnett St, Signal Hill 90755 | (562) 595-6356 |