But the rents don't justify it, for example we are renting a 3 bed 2 bath house with a huge backyard in rancho Cordova for 2350/mo, so duplex rents around here are 1800-2200 ballpark.

I will lend an example via data. 

Here is an example there is a mls listing went expired no one bought it I reached out to the owner and at the moment they want to sell at the price I gave them that’s a off market deal so should I call the realtor that couldn’t find a seller and have him NOW help me out on the deal where they couldn’t before?

Also, keep in mind if it causes an undue burden on you or is too costly you can deny them. for example, if your insurance company says that dog breed is on the ban list then you need to find out how much it will cost to insure them. if the rates go up because of the dog then you can deny them based on the undue burden. 

For example "Just get 3 estimates from general contractors.." is a lot easier written than done!!

If you do a 506c for example assume to create the PPM, subscription agreement and docs will cost between 10-20k. 

For example I am near old town alexandria and the businesses are 200 year old row homes and there is no place to put ramps to get in establishments and door openings are not wide enough, but that is because they also could never comply. 

Here are some examples:  1.

Thank you Andrew, great examples, I have joined a couple of Fb groups but I think I will look at Meetup also, I appreciate your help

For example, if the roof was "under insured", or if the ground moved below the roof support (I learned recently that  earth movement is not covered under some policies, such as those on the bluffs of Lake Michigan falling into the water).