See Section 10-723 of this next link:https://law.resource.org/pub/us/code/city/pa/Philadelphia/title10.htmlHere is an article that shows this is becoming more common in other places:http://evanstonnow.com/story/government/bill-smith/2013-02-06/54592/annoyed-by-ad-circulars-on-your-lawn

“We” will not pay for loss or expense due to the cancellation ofany lease or agreement.This coverage does not apply to loss caused by “fungi,” wet ordry rot, or bacteria other than as provided under ADDITIONALPAYMENTS, Fungi, Wet Or Dry Rot Or Bacteria Coverage.Fair Rental ValueIf an insured property loss covered under PROPERTYPROTECTION—SECTION I, OUR PROMISE—Dwelling Coverage,OUR PROMISE—Other Structures Coverage or OUR PROMISE—Personal Property Coverage, makes “your” “residence premises”uninhabitable, “we” will pay for “your” loss of normal rentsresulting from the loss, less charges and expenses which do notcontinue while the rented part of the “residence premises” isuninhabitable.

Spend your money learning your market(s) -- and do not limit  yourself to a single zip code, city or county.

Yahoo real estate and AOL real etate sites have good info on %s rented by zip code, city and state.

Talk to some builders, learn the local code, City Zoning will never keep up with any federal regulations.Opt1) builder might go 50/50 with you on profits since you already own the land. 

The insurance companies aren't worried about what something is worth, but what it will cost to rebuild.One issue (in Texas and I believe in all states) is if you insure for 40%, lets say you have a loss of $100k (not a total loss), less your deductibe, say $2,500,,,,you think you would get $97,500,,,but that is not true, you are only insuring 40%, so you will get 40% of the $97,500.   

Austerity measures are introduced, the young couple that purchased the house from our fictional teacher can no longer afford the taxes and have to sell it at a loss. Less

Zip code, city, county etc?

Can you please explain the filters you are mentioningThanks Devon Your filters are generally:- Location (zip code, city, county)- Value Range (e.g., $75K to $200K houses)- Equity % (use 40%+, usually use 50% as a minimum)- Property type (SFR - single family residence)- Owner Type (Absentee - In State, Abs - Out of State, etc.)I start there - see how many I get - and then use additional filters to narrow it down to the size list I want:- Length of Residence (Maybe 7+ yrs)- Age of owner (lot of people like to market to 65+ yrs old)