as an example, lets say a lender gave you an 80% loan to buy the land PLUS 100% of the cost to build the property on it in the form of draws... theoretically you'd be walking away with MORE than 100% financing. its just done in a round about way, and you would still need to bring in some "skin" as @Brandon Croucier mentioned. 

For example I just did a quick MLS search from Colfax north to Longmont, up to $550k.

Recently, I learned a valuable lesson that made me step back and reassess how I approach offers to sellers and agents.One example is a duplex deal where I submitted a lower offer due to the significant repairs needed.

For example, I bought another duplex recently for $40k, put 10k into the first unit and rented it in a week for $865.

For example, I mention that every adult must pay a $30 application fee, pass my credit/criminal background, make a combined income of 3x the rent, and whether or not the property accepts pets.

but it's really, really tough right now as there is limited inventory, tremendous competition for deals, money is expensive, and good contractors are booked up.the equity in your home is an example of very expensive money. 

Here’s a personal example.  

This is an astute observation that distinguishes between "mom and pop" landlords and large operations I can see how economies of scale can help, for example if you have 100 units and two have economic vacancy, it's not the catastrophe of owning a 2 unit and one half goes economically vacant.Nonetheless, is there a reason that small scale operations can't buy at a deep discount while large operations can?

For example his realtor was immediately against the idea, not because of any knowledge, but because of a la k of knowledge.

So, for example if a tenant was giving you a specific type of issue that was not clearly covered in the rental agreement you simply add it with 30 days notice and then evict for breaching the agreement.