It is also possible that the neighbor could file a suit against your mom and seek a court order to remove the fence, that would require your mom to defend herself in court by claiming the land under the California adverse possession statute.Alternatively, you could advise the neighbor that your mom has the right to claim the property -but as a gesture of good faith, offer the neighbor an amount you feel appropriate in exchange for the neighbor deeding the disputed portion to your mom. 

We've been making efforts to reduce our major monthly expenses (down sizing house, etc). 

Cost to build an condo complex is 13000 pesos per m2 with rental grade finishes average building size is 500 m2.

Have you considered property management fees (both initial setup and as a portion of gross rents)? 

Generally you hold a substantial portion of the Fee for after CO is received.I have heard some GCs will pull permits for owners as a flat fee, the owner then does all the management.

We are thinking that rather than simply spend down her retirement funds to pay for this care that there maybe a way to invest in rental property in order to pay for a significant portion of that cost through cashflow generated from rentals.

Hello,Curious if anyone has sold a home with owner-financing and designed the deal to keep a portion of the ownership of the house along with the new home owners?

Next, if there are proceeds left the sponsor gets a split of the excess portion. 

One bedroom is decent sized, the other two are 9x9 kids rooms with small closets. 

Depending on the size of the budget, and your goals, you will have two very different investment strategies.