They have a qualifying LTV score that gets deducted as "deemed appropriate" for properties in high crime, rural, blacklisted area, low purchase price in last 24 months and so on.. decreasing or eliminating the investors chances of being approved in favorable terms.  

Note that it didn't decrease its value in "real", it increased in fact.

I would simply capitalize that up front so as to compare apples to apples.First your increase or decrease will ONLY affect value not the cap rate,  The cap rate is set by the market. 

.)- Lawyer specializing in landlord tenant law (again you can use your landlord association and get familiar with local laws for bad debt collection, evictions etc)- Police department, do they have community outreach programs that you can join to decrease chances of crime (Cameras and lights are great, but prevention is best!)

Given the Amazon fulfillment center development, I would expect property values have increased and cap rates have decreased.

Population increasing or decreasing?

. - Perhaps you're right, but I would bet that pushing the heating costs on the tenants will result in a rent decrease that is less than the fuel savings; so you will get a net-positive gain. 

Wholesaling is already low yield strategy so the goal is to decrease the time, money, and effort put into each deal.Go back to your buyers and get all this information FIRST before you do any more shopping for potential deals, so you can avoid wasting any more marketing dollars (and time and effort) on potential deals that will never get bought.

We are also very conservative in evaluating numbers... we contingency plan with a quick exit in case markets change or decrease anticipated value.

So if you received a large refund last year, you will want to claim another one or two allowances which will increase your monthly paycheck and decrease the amount refunded to you at the end of the year.Generally you can claim up to 9 allowances without the IRS painting a target on your back.