You will never get all that done for 100k these days. Prices are through the roof. I would double that budget, or maybe even a bit more than double. You would probably be better off, looking for a new build, and buying a new house.

What you are describing is hugely expensive - time consuming - stressful - and realistically it woud be difficult to do without moving out for an extended period of time.

Also a two story home is never going to be ideal if you want to age in place as comfortably as possible.

Also aging in place generally also means downsizing in some way since people don't need the rooms and space for their family who are now living in their own homes. So you need to maintain and clean unused space - as well as pay to heat and cool. Even your cleaning people will charge more.

However the way to determine whether it makes sense both economically and functionally is to look at what is available and what the cost is.

Move.

The only way to consider aging in place is if you have an elevator. Otherwise, move.

My mother loved her colonial house that she and my dad raised us kids in. When I turned 29, they decided to sell the house and buy a ranch.

I asked her why she was selling the house she loved. Her answer was about how they're not getting younger and they need to think in terms of what happens if one of them becomes disabled. This was when my Mom was 55. When my Mom turned 72, she was diagnosed with Parkinson's disease. Because she was wise to move when she was in her 50's, she was able to continue to live in her house until the last 6 months of her life. She passed at age 84.

And it turned out that house became the entertainment house. They actually had more space but the space was better designed for how they were living as empty nesters who liked to entertain. and they had additional land which they loved for it's peacefulness.

I'd begin looking for a lot with 'additional land' as cpartist mentioned above. You can improve the quality of everything including your exterior landscape.

I think I would move, since you are open to it. You are describing changes that would cost Much more than $100,000, probably at least double.

I don't completely agree that aging in place absolutely requires an elevator. My parents did not want to move when my mother could no longer get up and down the stairs easily, so they installed chair lifts. When my father moved into my sister's vertical house at age ninety, She got stair lifts. This worked for my parents for at least 15 years. Is it as integrated or style conscious as an elevator? No, of course not. But not every house can be remodeled for an elevator, many people do not want to remodel that much, build, or move to a house with an elevator, even if they have the money to do so.

My parents did not want to move when my mother could no longer get up and down the stairs easily, so they installed chair lifts.

There was no way with my Mom's disability that she could have safely gotten on and off a chair lift.

Alot of studies are showing staying in a two story house after 50 is very beneficial to your longevity and cognition. I plan to stay with two floors until or if my health changes rather than plan for needing it.

Leaving a house you love for unknown possibilities seems a bit sad to me. I live with an incurable disease that often causes severe morbidity and premature death so I live just for today and will deal with future issues when/ if they arise by either adapting my house with a lift, moving to a existing or new wheelchair accessible house or assisted living if necessary.

Get quotes on a remodel, scout out new builds, look at existing markets and see your real options and costs then decide. Prepare a living will and let love ones know your wishes and then live in the moment where you will be happiest.

There’s no pat answer- so many variables. Such as what your actual renovation needs/ wants are, things you love about your current location & property, what’s available in a more “aging- friendly “ house build including locations you are willing and able to move to.

So, I agree with taking some time to do wish lists for both staying/ moving, tour houses for sale , consider neighborhoods or types of communities you might never have considered when you had schools, job commutes.

That also would be affected by where this fits into your likely “ moving continuum “. For example, could you see yourself needing assisted living but not now; would you relocate near other family but not now. Not that these are predictable!

I recently downsized from 5 BR 2-story to smaller one level home. The renovations and repairs on the larger home were just going to be overwhelming. Plus there were some features we no longer wanted but would have to keep up.

The downside was that I needed to move in a certain time frame, so did the best I could in pandemic market and would have preferred to have had more time & options.

We were not so worried about the stairs at present and had option for downstairs- only living ( a full bath and rooms that could become a downstairs primary. But would need work as would entire kitchen, other baths, exterior, new windows— a lot. For me that would be overwhelming choices, contractors, moving out AND then would have renovated a larger home. I would not be good at making just the right economy/ nice- ness choices.

If you look at this as more of starting a journey or exploration, and not just a binary ( which can get you in a tizzy, or paralyzed) there are a lot of things you can do that are helpful regardless. It sounds trite, but decluttering, cleaning , thinking what are your favorite furnishings vs “ in a new house/ life I’d give this away in a heartbeat “ can help you clarify style, lifestyle, house size & storage needs. Downsizing can be great unless you still are hosting big family gatherings or having multiple houseguests.

Even then, knowing how you want to live right now dies guide both any renovation plans and what you’d look for in a new home.

Some people have an amazing property location that is very hard to duplicate at today’s prices- views, water, privacy, established gardens are the sorts of things that I think of. That can be a reason to put $$$ into staying put for another decade ( or more). But even then, you never know until you do some looking, because you’ll be looking at different size & types of houses compared to growing families.

A very timely discussion topic for me as my mother has just reluctantly accepted that she needs to move to assisted living. My parents bought a home and remodeled for their retirement years. They did well in that house for about 25 years but it got too much for them to maintain. The last few years have been increasingly difficult but too late to revisit decisions which should have been made a few years ago. 

At my last visit, we moved my mother's bedroom to the main floor as she has no need to climb the stairs. That level has a full bath with walk in shower added during the remodel to have single floor living. Her comfortable reading chair and computer room are in the basement level but that set of stairs is somewhat easier for her.

My comment is empty nester and early retirement home space needs to be downsized as people age and their families grow up. Housing that suits your needs at 60 won't be the same place you might choose at 80. My parents (88,91) need a small space, perhaps 500 sq ft, which has a small kitchen, spacious bathroom, good lighting and access to the outdoors. Unfortunately most senior facilities in their area don't have apartments, just rooms.  

I think the concept of a forever home is not practical for many people. Just as young people buy starter houses, older people need final houses.

A very timely discussion topic for me as my mother has just reluctantly accepted that she needs to move to assisted living. My parents bought a home and remodeled for their retirement years. They did well in that house for about 25 years but it got too much for them to maintain. The last few years have been increasingly difficult but too late to revisit decisions which should have been made a few years ago. 

At my last visit, we moved my mother's bedroom to the main floor as she has no need to climb the stairs. That level has a full bath with walk in shower added during the remodel to have single floor living. Her comfortable reading chair and computer room are in the basement level but that set of stairs is somewhat easier for her.

My comment is empty nester and early retirement home space needs to be downsized as people age and their families grow up. Housing that suits your needs at 60 won't be the same place you might choose at 80. My parents (88,91) need a small space, perhaps 500 sq ft, which has a small kitchen, spacious bathroom, good lighting and access to the outdoors. Unfortunately most senior facilities in their area don't have apartments, just rooms.  

I think the concept of a forever home is not practical for many people. Just as young people buy starter houses, older people need final houses.

A very timely discussion topic for me as my mother has just reluctantly accepted that she needs to move to assisted living. My parents bought a home and remodeled for their retirement years. They did well in that house for about 25 years but it got too much for them to maintain. The last few years have been increasingly difficult but too late to revisit decisions which should have been made a few years ago. 

At my last visit, we moved my mother's bedroom to the main floor as she has no need to climb the stairs. That level has a full bath with walk in shower added during the remodel to have single floor living. Her comfortable reading chair and computer room are in the basement level but that set of stairs is somewhat easier for her.

My comment is empty nester and early retirement home space needs to be downsized as people age and their families grow up. Housing that suits your needs at 60 won't be the same place you might choose at 80. My parents (88,91) need a small space, perhaps 500 sq ft, which has a small kitchen, spacious bathroom, good lighting and access to the outdoors. Unfortunately most senior facilities in their area don't have apartments, just rooms.  

I think the concept of a forever home is not practical for many people. Just as young people buy starter houses, older people need final houses.

There was no way with my Mom's disability that she could have safely gotten on and off a chair lift.

And that wasn't my point. (Actually neither could my mother get off safely at the top of the stairs, eventually. But at that point she would not have been able to operate a residential elevator door by herself either.)

Someone else's mother might require 24 hour a day attendance. My point was that not every level of disability requires a fully accessible house with an elevator to actually live in it. And not everyone can afford, financially or otherwise, to pick up and build a custom house that has an elevator or is on one level, and meets every ideal requirement.

And if anything, as someone else mentioned, use of these accommodations by other people in the household who are not disabled can be to their detriment, in the long run. My father lived alone until he was 90 and outside a facility until he was 93 and I am convinced that using my mother's chairlifts because they were there and because he got lazy, essentially, accelerated his own eventual mobility issues.