Thanks for the links - we've learned a lot!
It looks like residential elevators are a real growth area with the aging of the baby boomers. Lotsa different players, new technologies - and prices coming down significantly.
Which also means that if you buy a residential elevator before you need it, not only may you be overpaying but your manufacturer may be out of business by the time you do need it. No spare parts, etc. "So sorry." Unless you are talking a company like Otis.
Also, if you wait until you need one, taxes and insurance issues may be different than if you buy one before you have a significant disability. I do not know the details - I expect that the residential elevator companies will be well aware of these issues, however.
Our current plan looks like if we go multi-story we should plan on building a house with generous stacked closets with enough slab clearance and roof clearance above and below the closets to later put in an elevator. Then keep abreast of developments once every few years - both on the internet and with local elevator installers. Then if we ever need one, we can move relatively swiftly - and we will know the time issues involved.
The three (well, maybe five) people I know personally who have needed this sort of thing all had a gradual development with either degenerative neurologic disease or frailty of aging. So a few months lead time will probably be available if it is ever needed.
As long as house entrances and bathrooms are all accessible, this will allow for an alternative to a one-story universal access house.
But a one-story house is still in the running - fewer bathrooms needed and no need for stairs and elevator spaces can save significant floor area in a house (remember - accessible bathrooms take up a LOT of room), Depending on land prices it might make more sense to buy one-story or multi-story. We'll see.
We'll talk to the accessibility experts and the elevator experts before doing anything rash.
Thanks, All -
Epaminondas
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http://www.stackyourclosets.com/