I printed this out and it was accepted by Chiang Mai immigration office back in December. You also have to photocopy the pages of your passbook of saving account covering the period from your last extension up to the day you apply for your extension.
If you are using bangkok bank, you can request the 12 month statement be sent to you email using the Bua Luang app, free of charge. It would usually be ready after a few minutes. Print it out . No need to go to the bank and pay for that.
Many Thais living in urban area are working there living alone, or sharing a flat with others, away from their countryside home. So cooking or owning a washing machine is a bit of luxury for them. If you are looking at the bigger condominium flats, townhouses, or single houses, those would most probably come equipped with kitchen and washing machine.
Two years ago Non-immigrant O visa dependent on Non-O retirement needs to be applied from Thai consulate or embassy outside Thailand. Don't know the situation now. You can check at your immigration office.