Wood has a huge variability in strength--between pine varieties, the stress which can cause them to fail varies by more than 2x and you can see 20%+ increase in strength as it ages.Then I have stress concentrations which will yield and then redistribute the load in practice, but not according to the calculations I'm allowed to do. 

For flipping, I'm concentrating on SC and IN.

Concentrate on finding a Real Estate brokerage that does investing as well.Good Investing...

I have a good agent I've worked with for years and letting him represent me not only gives me the advantage of additional counsel, it also gives me someone else to do the heavy lifting so I can concentrate on the deals themselves rather than the intricacies of the actual contract, the process of moving everything through closing and all the hiccups that often come with investment properties.

Hopefully he finishes this rehab in February as I hope to have him set up an out of town, large (over 3000’) luxury STR in the spring.When he completes that effort, we will be concentrating on getting him a property in San Diego which as everyone knows is very expensive.  

Once again, the loss of the compounding factor by concentrating on my personal home rather than an investment was significant. 

for infill I concentrated on Charleston Sc and built about 35 homes in that market. uber competitive for dirt though they are running out of it and the city wont let you tear down homes in many cases because of historic considerations.

While RAD also concentrates on areas of Texas, Idaho, California, and Florida for its growing portfolio of rental properties, according to the January offering circular, Philadelphia has been its primary locus of activity.

The GFC unfortunately hit all of us lenders pretty hard and I had a concentration in Jackson and ATL and Memphis so I had to move to Jackson for a year to clean up my portfolio I thought I was going to be there for maybe a few weeks but that turned out to be a year and I got very fortunate I was able to rent the developers house at Reunion .

A good property manager can guide you in selecting properties that will attract a tenant segment with a high concentration of reliable people.Access to cost-effective resources for renovation and repairs.Lease terms enforcement.