Is just the fact that no garage could be a no go for some buyers enough to build it even if it only raises the value by the actual cost?

Even one vacancy or non-paying tenant could potentially be a major problem.And yes, there were vacancies, and non-paying tenants, and major problems.

Given your assumptions, you are not going to be able to get enough of a loan to fully cover the rehab, even with a hard money loan, so you'll need to pull in cash from elsewhere.One possibility is to have your mom sell you the house with a personal loan, not one attached to the property. 

It will take that long to foreclose even if they find out.

Even during the financial crisis of 2008, Germany'sreal estate market remained relatively stable compared to other European countries.

No need to delete those IMO, even if it is FAQ. 

OR even less risky is investing in bonds/CDs, etc.

It can be used to monitor markets, filter results based on lots of different criteria & even includes annual revenue numbers that you can work backwards to see how certain markets/properties are performing.

Id keep looking if it was not an approved short sale ( even an approved short sale takes a very very long time and theres no guarantee that you will even close on the house after months of waiting). q1)There are plenty of non traditional lenders that could offer you construction financing if the numbers make sense but it will cost you with points and a higher rate.

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.