Clear rock stream on the backside.  

No guaranteed way to stop a determined, experienced thief:(Only deterrents that push them to easier jobs.The roof may be a good idea - until they figure out the just need a ladder to get up there and a rope to lower it down. 

This does not matter if the tenant is off a bit on rent and income.

 How long is the moneyback guarantee good for? 

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Quote from @Melanie Baldridge: Why I like investing in real estate more than 401(k)s.Both offer tax deferrals, but here's the difference:If you're making pre-tax contributions to your 401(k), then withdrawals = ordinary income tax.With real estate gains, you're paying capital gains tax (which is typically lower).Plus, RE investors get:1.

While the guarantee of income sounds great, it's only a percentage of the rent, typically up to 70% and the tenant has to pay the remainder.

You'll need more capital and most will require a personal guarantee and personal financial backing. 

Virtually everyone lives somewhere especially true for those that pay taxes (in CA property and income tax).  

If one partner unconditionally guarantees the debt, this can sometimes require some side room guarantees to that partner to ensure no one recognizes a capital gain.As a few others have alluded to, there is a secondary problem known as a "debt financed distribution interest expense."