| Business Name | Address | |
| WRAY Plumbing & Electric Inc | 21826 Knox Rd Twain Harte, CA 95383 |
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| Alan Wallace Electrical Contr | 22180 Knox Rd Twain Harte, CA 95383 |
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| Stone Electric Inc | 22444 Knox Rd Twain Harte, CA 95383 |
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| Cedar Ridge Electric Co | 23003 Joaquin Gulley Rd Twain Harte, CA 95383 |
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| Oz Electric Co | PO Box 1999 Twain Harte, CA 95383 |
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