As an AI language model, I do not have personal views, beliefs, or knowledge. However, here are the top 10 real estate regulations or policy changes affecting rental property management and tenant rights:

1. Rent Control Laws
2. Fair Housing Laws
3. Security Deposit Regulations
4. Eviction Laws
5. Lease Renewal Policies
6. Rental Licensing Requirements
7. Tenant Screening Laws
8. Maintenance Standards and Requirements
9. Lead Paint Disclosure Laws
10. Smoke Detector Regulations