It has cost many people including myself a lot of unnecessary money and still is because you deal with the tax portion of opening unnecessary LLCs recommended by supposed professionals. 

I can find numerous other similar homes for investors.

Do most of them imply the agent commission is included? 

We typically pay somewhere in the range of $3500 for a new, basic furnance, including install, if there are no other modifications to the system required.  

The risk is not including due diligence caveats in your offer, like inspections.   

These included cash buys for flips, seller financing, and subject-to deals.

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

My core investing philosophy is pretty simple, and has done very well across almost two decades and numerous cities:1) Invest in cities with population (and job) growth2) Invest in parts of the city where household income is near the median (or slightly below)3) Invest in properties that provide cash flow from day 1 Thank you for sharing that. 

I would include it either as a lump sum at closing for the amount which is easier than charging it back to them on a monthly basis.We have "investors" who own a % of each mortgage.

If anyone could include what to look out for in a good deal and a bad deal