@Suganya Vinayakam There are many different opinions on the value of an ADU. Yes, they cost more to build and the ROI takes a long time. On the other hand, with the price of real estate today, it is difficult for our children to be able to afford their own homes. If the ADU is part of the parents' property, it can be a blessing. The adult child would not likely be able to afford to purchase in the neighborhood where the parents live.
For seniors, living in an ADU on their children's property sure beats a $7K/mo assisted living center and still gives them independence.
There is a lot of push-back coming from HOAs in today's real estate market regarding ADUs. This is for many reasons, some legitimate and others just excuses or racial profiling in a different form. Please don't shoot the messenger.
The severe housing shortage is increasing housing density from coast to coast. There are no easy solutions. What I am seeing is older residential units being purchased, eventually torn down and upscale apartments replacing them. In my opinion, it has already started, we are going to see single family residential zoning going away. Those who get on board earlier are going to be the winners of the future. I work with one client in CA, who is buying up small houses on bigger lots and adding ADUs quite successfully.
Here is a simplified calculation that some may be interested in: ADU cost $200K, annual rental $21,600 ($1,800 per month) = almost 11% per year. Just try to get that interest rate from a bank.