| Ilocos Norte 1st District Engineering Office | | Airport Avenue, Cavit, Laoag City |
| Name | DE NESTOR P. PASION | ADE RICHARD A. RAGASA. (OIC) |
| Contact No: | (077) 670-8614 | (077) 670-8614 |
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| Fax No: | (077) 670-8468 | |
Email Address: | | |
| Ilocos Norte 2nd District Engineering Office | | San Nicolas, Ilocos Norte |
| Name | DE MATHIAS L. MALENAB | ADE JAMES P. FERRER (OIC) |
| Contact No: | (077) 781-3420 | (077) 781-3420 |
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| Ilocos Sur 1st District Engineering Office | | Bantay, Ilocos Sur |
| Name | DE REYNALDO S. ORGANO | ADE GAVINO A. CASTAÑEDA |
| Contact No: | (077) 722-8054 | (077) 722-7490 |
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| Fax No: | (077) 722-8054 | |
Email Address: | | |
| Ilocos Sur 2nd District Engineering Office | | Candon, Ilocos Sur |
| Name | DE JOSE G. GINETE, JR. | ADE RENATO G. GAGNO (OIC) |
| Contact No: | (077) 742-6032 | (077) 742-6032 |
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| Fax No: | (077) 742-5893 | |
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| La Union 1st District Engineering Office | | Lingsat,San Fernando City, La Union |
| Name | DE EMIL R. GANADEN | ADE GIL M. LORENZO |
| Contact No: | (072) 700-2938 | (072) 700-2937 |
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| Fax No: | (077) 700-2938 | |
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| La Union 2nd District Engineering Office | | Naguilian, La Union |
| Name | DE AQUILINO M. NICER | ADE RAUL P. GALI (OIC) |
| Contact No: | (072) 609-1716 | (072) 609-1070 |
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| Fax No: | (072) 609-1716 | |
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| Pangasinan 1st District Engineering Office | | Alaminos City |
| Name | DE SMILE R. FERMIN | ADE CARLO V. EVANGELISTA |
| Contact No: | (075) 552-7213 | (075) 552-7213 |
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| Fax No: | (075) 552-7213 | |
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| Pangasinan 2nd District Engineering Office | | Lingayen, Pangasinan |
| Name | DE RODOLFO C. DION | ADE DIOSDADO C. LOMIBAO |
| Contact No: | (075) 662-1689 | (075) 542-6751 |
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| Fax No: | (075) 662-1689 | |
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| Pangasinan 3rd District Engineering Office | | Tumana, Rosales, Pangasinan |
| Name | DE EMMANUEL W. DIAZ | ADE ANDRES M. NICER |
| Contact No: | (075) 541-5469 | |
| Contact No: | | |
| Fax No: | (075) 582-3993 | |
Email Address: | | |
| Pangasinan 4th District Engineering Office | | Sta Barbara, Pangasinan (former Pangasinan Sub-DEO) |
| Name | DE MARIETA B. MENDOZA | ADE EDITA L. MANUEL |
| Contact No: | (075) 653-6418 | (075) 653-6418 |
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| Fax No: | (075) 653-6418 | |
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