The best will often ask for nothing until they set foot on the jobsite and really start with site set-up and demo. 

So I would go on different sites like Roomster, FB marketplace, and similar sites like that to see what people are renting rooms out for.

I find that some sites have better calendars than others.

Development projects can vary from a 1-lot Single Family home to 20-acre subdivision, to a 4-acre commercial site, etc. 

Hey @Marc Shin, I agree with those that have said to scour the sites for quality USA made furniture.We have a mix of Basset and La-Z-Boy furniture and it still looks great after 7 years.

You'll quickly see why AI is not the solution here... not only will it give you a random number from a site that posted it, but it will hallucinate and draw quirky assumptions into the mix like oh based on this % appreciation and applying it forward/backward, etc.

Also check out BiggerPockets sister site for passive investments: www.passivepockets.com 

You can also use sites like rentometer to help confirm your rent price.

If you keep the footprint of the home the same, you can avoid timely and costly site planning applications in most jurisdictions.

The only drawback was it did not list/syndicate to as many sites.