What is the best easy layman's tool to generate a plan?
Goto ikea.ca they have computer base online software you can.
It is user friendly. Yo can even add cabinet appliances (existing or new)
At the of the design you will have estimated cost as well
Ikea I believe, they will charge you for this, takes forever to get an appointment & as well they only do cabinet set-ups based on your plan so no help there for a full reno and only any good if you are going to buy their cabinets. If you have no idea what to do? & If you want to DIY then some books from library on kitchen remodels can be helpful, they sell them at home depot too. But it is a specialized job so I never recommend DIY, plus I get more work then LOL! Otherwise I suggest a interior designer, you will get more for what you are paying for and you just tell them what you want. Also you can decide what you want "1st" and call a "General Contractor" to give you a quote, you will need to provide at least details on what kind of flooring, electrical, cabinets etc. you want and whether space is to be left as is or remodelled. Most kitchen full gut and remodels run from $25-35,000 and can go up from there.
here in toronto there is no charge.
you can use your own computer and open this link
https://kitchenplanner.ikea.com/ca/UI/Pages/VPUI.htm?Lang=en-CA
you can save it and when ready you have to go to ikea store to finalize your design
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