What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

I’m unsure what kind of notice I need to give them—does it work the same way as residential leases, requiring a 120-day notice?

I put more than the 3.5% required.

If in the future they try to buy a house, the lender may require it to be paid but that's a long shot. 

Real estate investing requires a good deal of research, so build your arsenal and over time you'll be an old pro. 

Single family house, which required smaller down-payment and little cosmetic repairs.

@Scott Trench & @Rene Hosman Have you considered implementing ways to verify identities of those who can post in the forums and perhaps even require full names?

They require or they request.Big difference. 

One particular point can not be over emphasized; even if someone has and is willing to invest the capital in attempting to build or scale their business or investments, they still May fail if they do not possess or can not evaluate those who CLAIM to possess the necessary expertise required for scaling. 

@Tove Fox - Residential Real Estate InvestingPros:Lower Entry Costs: Easier to get started with less capital required.High Demand: People always need homes, making demand relatively stable.Easier Financing: Mortgages are generally easier to secure with favorable terms.Simplicity: Easier to understand and manage, especially for beginners.Flexibility: You can use it as a personal residence or rent it out.Cons:Tenant Turnover: More frequent turnover leads to vacancy and more management.Lower Cash Flow: Income potential can be modest compared to commercial properties.Emotional Buyers: Residential prices can be influenced by emotions, leading to price volatility.Maintenance Burden: Landlords often deal with repairs and maintenance, which can be time-consuming.Commercial Real Estate InvestingPros:Higher Income Potential: Stronger cash flow and higher returns are common.Long-Term Leases: Tenants often sign longer leases (3-10 years), reducing vacancy risk.Professional Tenants: Business tenants tend to take better care of the property.Valuation Based on Income: Prices are based on the income the property generates, not market emotions.Shared Costs: Tenants often cover property expenses like taxes, insurance, and maintenance (via triple-net leases).Cons:High Entry Costs: Requires more capital or partnerships to get started.Complex Management: More expertise is needed; you may need a professional property manager.Economic Sensitivity: Commercial properties are more sensitive to economic conditions.Challenging Financing: Securing financing can be harder, with stricter terms and higher interest rates.Zoning and Legalities: More complex regulations compared to residential properties.Key Differences:Risk: Residential tends to be lower risk, while commercial offers higher rewards but with greater risk.Management: Residential is easier for DIY investors, while commercial properties usually require a team.Scalability: Commercial properties are easier to scale, offering more potential for significant cash flow increases.