Seattle's current budget, without doing any of this, is about $8.5 billion per year. (That includes Seattle City Light, which is part of the city budget; but it's still something people pay for.)
Dividing by 800,000 residents, that's about $10,625 per person -- adult and child -- per year. You can do the math on a household of 5.
That doesn't include any of these items: "Universal" childcare, "Free" K-8 summer care, "Social housing" for thousands, and things like city-run grocery stores, or "Free" transit, which she's also dangled as a possiblity.
These are fantasy ideas; the math doesn't math. Capital has never been more mobile, and there is no reason anyone being taxed heavily to pay for it needs to stay.
Seattle mayor-elect Katie Wilson's socialist wish list: "I want everyone in this great city of ours to have a roof over their head. I want universal child care, free K-8 summer care ... I want social housing, I want much more land & wealth to be stewarded by communities instead of corporations..."