I've laid out some pros and cons below that we thought of off the cuff: Single Family: Pros:- Many potential targets (more available)- More likely to find a deal (but varies from market to market)- Location (more SF homes in more locations compared to MF)- Condition (easier to find new(er) inventory)- Exit Strategies (can resell to an investor AND/OR an owner occupier)- Simpler Financing (residential compared to commercial lending)- Self Management Option (easier to manage one home as opposed to many tenants)- House hacking (many forms of this in a SF home)- Lower barrier to entry/lower buy-in costs (cheaper properties) - House Swap (primary residence financing with rental income after moving out)- Tax benefits (potential to 1031 exchange or Section 121 exemption for primary residence) (always check w/ your CPA) Cons:- Generally lower returns (owner occupants also drive pricing) - Single tenant income (less diversified income) - Potential for more upkeep (yard work, trees, etc.)Multifamily:Pros: - Efficient management (more tenants in one location) - Higher cash flow (generally a greater return than SF) - Utilities (more utility efficiency) - Tax benefits (1031 exchange, cost seg, 39 year depreciation on 5+ units) (always check w/ your CPA) - Can force appreciation (through decreasing expenses/increasing rents) - Very scalable (can keep 1031ing and "upgrading" in unit count with the next property in one place) - Income diversification (many streams of income on one parcel in one place) - Larger targets can yield higher returns (as unit count grows, generally cash flow does as well)Cons:- More complex (typically significant nuance)- Fewer opportunities to buy (fewer targets available) - Older inventory (generally on smaller MF)

My Goals Are Wealth Accumulation, Passive Income, Financial Freedom, Diversification, Retirement Planning, Short Term/ Long Term Profits, Learning & Skill Development, Networking & Relationships,Tax Efficiency, Legacy Building & Risk Management.

Multi-family props bring diversification, while single-family homes offer simplicity.

I am into risk diversification here, I know the south, se and midwest will be all cheap as sin.

Most of our clients will try to do the diversification exchange (use the remaining proceeds to buy a 2nd property). 

Diversification.

You have to consider real estate as part of your portfolio, it will add an element of diversification to the stocks and bonds while at the same time has unique taxation situation that you could take advantage of.

Another question: What is the best way to check a metro economy strength and diversification?

Some of my clients do that for diversification.

Other funds provide investors with diversification across different sponsors, asset types, geographies, etc.