From what I am reading, you cannot apply for a work permit from Canada unless you fall in to one of the categories below. Visitor is not one of them. To answer your question, if you are applying for Permanent Residence while in Canada, you definitely can use an address in Canada. Black n white is good.
Who may apply for a work permit from within Canada?
Important: The ability to apply in Canada does not guarantee acceptance. Eligibility criteria for the category of work permit must be met.
The following persons may apply for a work permit from within Canada:
- Holders of work or study permits and their family members;
Note: Spouses or common-law partners of highly skilled foreign workers may themselves be authorized to work without first having confirmation from Employment and Social Development Canada (ESDC). In the case of workers destined for Quebec, without having to obtain a CAQ from the Ministère de l’Immigration, de la Diversité et de l’Inclusion (MIDI). The principal foreign worker must be doing work which is at a level that falls within National Occupational Classification (NOC) Skill Levels O, A or B in order for them to qualify for a work permit. These skill levels include management and professional occupations and technical or skilled tradespersons. See if you need a Labour Market Impact Assessment.
- Successful graduates from a program at a Canadian university, community, college, CÉGEP, or publicly funded trade/technical school (or from a Canadian private institution authorized by provincial statute to confer degrees) who wish to work for a maximum of one or two years in employment related to their course of study. The maximum length will depend on the length and location of their studies, and the location of their employer. Graduates must submit an application for a work permit within 90 days of the issuance of your final marks. Their study permit must be valid upon submission of their application for a work permit. For further details refer to the Stay in Canada after graduation;
- Persons currently working in Canada, who are not business visitors and who don’t require a work permit, who are applying for secondary employment in Canada;
- Holders of temporary resident permits (TRPs) valid for a minimum of 6 months and their family members;
- Refugee claimants and persons subject to an unenforceable removal order;
- In-Canada permanent resident applicants and their family members who are members of the following classes, determined eligible for permanent resident (PR) status: live-in-caregiver, spouse or common-law partner, protected persons, and humanitarian and compassionate considerations (H&C);
- Persons whose work permits were authorized by a migration office abroad, where the permit was not issued at a port of entry;
- Mexican citizens who have been admitted to Canada as visitors may apply for a work permit under any North American Free Trade Agreement (NAFTA) category. U.S.citizens admitted as visitors may apply in Canada under the Professional or Intra-company Transferee NAFTA categories only. These provisions are in accordance with reciprocal arrangements
https://www.canada.ca/en/immigratio...ns-extend-your-stay-canada-worker.html#5553E2