Condo have high fees. Cities have high taxes After you add in the mortgage of $400k or the loss of that investment you atelier not going to see a Hugh increase in your monthly expenses.
Just because you have a two story house does not mean you have to leave. Pu in a chair lift. How often do you go upstairs each day? If I am not doing laundry I usually get up, shower and go down stairs. I go up to go to bed.
Cleaning a house is good exercise. If you both are retired and not bed ridden, how could you not find the time to clean? What are you doing all day?
We are staying until we need help that we cannot get at home. Our propert taxes, heating and electric cost less than $600/ month.
I would kill for that. My property taxes alone are ~800 bucks a month.
It is area dependant. the sections of Philly dh and I were looking into the property taxes were about 1/2 of what we pay now. Now you have to recognize I live in Jersey which is number 2 on the hit parade of property taxes. almost any place else is going to have lower taxes
Also some areas of Philly if you move in are giving 5 year propert taxe abatement. that's 50K over what I am paying now.
Now as to what would I be doing all day. remember now I'm projecting the best case scenerio. I'm doing what I do now on my weekends. I'm out, either with friends or most often with family I go to museums, I go to visit people, I do my volunteer work, I visit family, I run chores. February I'm starting a French class so I'll have classes tuesday and thursday evenings. Now of course hopefully when I retire I'll free up tons of time during the weekend but hopefully I won't be spending it sitting in the house.
I totally admit to adding to the problem with having tons of clutter I'm trying to get rid of. but probably the underlaying factor is I hate cleaning.

even when I have the time I hate doing it. definitely personality warp on my end but once again can't see that changing just because I'm retired.
Lastly my stairs. Let's look at just last night.
Came home: immediately go upstairs to take off work shoes
back down stairs.
Go downstairs to basement: put food in freezer from grocery store.
back upstairs.
Cook dinner, read mail, listen to answering machine, walk the dog clean kitchen.
Back upstairs to get a load of laundry to wash, downstairs to washer.
Take clothes in dryer upstairs to fold hang etc.
Back downstairs to putt putt around (take allergy medicine that I forgot to take, get a drink of water)
Back upstairs for some thing, can't remember what, oh yeah went into powder bathroom realize no spare toilet paper roll.
back downstairs because door bell rang.
So within the 3 hours from 5 pm to maybe 8 pm I'm up and down the stairs 7-10 times. Now I guess I could start making a concious effort to combine trips etc etc but that's a bit too micromanaging for me.
So for me, I can't wait to downsize.