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District of Columbia
License Exam Preparation
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| General Info |
| You must be licensed to do electrical, plumbing, asbestos abatement,
home improvement or refrigeration and air conditioning work in Washington DC. |
| Reciprocity |
| There is no reciprocity with any other jurisdiction. |
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Districtwide Classifications
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Electrical
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| 220 |
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| 307 |
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| 308 |
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| 309 |
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| • |
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| 337 |
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| 338 |
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| 824 |
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Plumbing
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| 303 |
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| 304 |
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| 300 |
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| 302 |
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| 310 |
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| 301 |
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Mechanical
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| 311 |
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| 312 |
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Additional Notes
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Green bullets or trade codes indicate a recently updated page. |
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Trade codes refer to ICC exam ID numbers. |
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