1. by Property Type
1.1. Residential
1.1.1. Condos
1.1.2. Townhomes
1.1.3. Single-Family Homes
1.1.4. Deplex/Triplex/Quads
1.1.5. Mobile Homes
1.1.6. Land
1.1.7. Co-ops
1.2. Commercial
1.2.1. Multifamily
1.2.1.1. 5 units and above
1.2.2. Retail
1.2.3. Industrial
1.2.4. Office
1.2.5. Hotels
1.2.6. Land
1.2.7. Others
1.2.7.1. Self-storage, amusement parks, etc.
2. by Investment Type
2.1. Equity
2.1.1. Common Equity
2.1.2. Preferred Equity
2.2. Debt
2.2.1. Secured VS. Unsecured Debt
2.2.2. Senior Debt VS. Junior Debt VS. Mezzanine Debt
3. by Investment Apporach
3.1. Active/Hands-On
3.1.1. Rental
3.1.1.1. Short-term Rental
3.1.1.2. Long-term Rental
3.1.2. Flipping
3.1.3. Wholesaling
3.1.4. Tax Liens
3.1.5. Notes
3.1.6. Hard Money Lending
3.2. Passive/Hands-off
3.2.1. Real Estate Investment Trusts (REITs)
3.2.1.1. Public traded REITs
3.2.1.2. Public non-traded REITs
3.2.1.3. Private REITs/Funds
3.2.2. Real Estate Related Companies
3.2.2.1. Construction companies, service companies, etc.
3.2.3. Real Estate Mutual Funds and ETFs
3.2.4. Real Estate Crowdfunding Platforms