I work as a contractor for a local company so my main workspace is her home. A few hours only are done at my home. Do I put her address or mine for this work?

[TurboTax-Meg]

If you use part of your home for both your business and personal living, calculate how many hours in the day you use the rooms for your business, and then divide that amount by 24 hours. Multiply the result by the business part of your total home expenses. This will give you the household cost you can deduct. If you run the business for only part of the week or year, reduce your claim accordingly.

You can read more here: https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/sole-proprietorships-partners...