I am thinking about building a modular home and noticed Vantem had good reviews.

Do you know repair costs (contractor background)?

I'm looking forward to networking, and meeting like-minded individuals, maybe future partners, lenders, agents, contractors, etc.

You can invest in class D areas that on paper will show a high IRR of 20% but I would not touch it with a ten foot pole, but in same breath I would consider a 10% IRR where there is no leverage and low investment to value.If the class(a,b,c,) of an apartment building is based on the year it was built than what specifically determines the class of the area?

Here is a summary of the book.https://www.nateliason.com/notes/long-distance-real-estate-investing-david-greeneThe book also mentions the importance of having a rockstar Realtor, contractor, lender, and property manager.

Do any of you have recommendations for solid:-contractors-insurance agents-attorneys-property management company-mortgage brokers?

For myself slowly building an REI portfolio has worked best. 

Charge the renter for any damages and have a contractor repair.

@Dale Linenot in a million years.the whole point of investing in RE is to build equity over time.  

Free attorneys from tenant-support groups are very effective in finding ways to block and delay.PS: for anyone interested in supporting our landlord legislative efforts please join the Rental Property Association of Wisconsin RPAWI.org which is a Milwaukee-based non-profit.Cashflow in Milwaukee is still possible at current interest rates, but you have to be careful to not "buy cashflow" with a huge capex liability that comes with old buildings!