Fifty-nine domains of inquiry

1. 01Population size and prevalence
2. 02Pathways into homelessness
3. 03First-time homelessness and prevention failure
4. 04Duration and chronicity
5. 05Returns to homelessness
6. 06Rent and affordability pressure
7. 07Extremely low-income housing deficit and vouchers
8. 08Eviction and displacement
9. 09Rent arrears and household financial fragility
10. 10Housing production and land-use governance
11. 11Coordinated entry
12. 12Street outreach
13. 13Navigation centers and access points
14. 14Documentation barriers
15. 15Cross-county service mobility
16. 16Emergency shelter capacity
17. 17Interim housing performance
18. 18Tiny homes, cabins, safe sleeping, and sanctioned sites
19. 19Safe parking and vehicle residency
20. 20Shelter quality and civil conditions
21. 21Permanent supportive housing
22. 22Rapid rehousing
23. 23Housing Choice Vouchers
24. 24Homekey and property acquisition
25. 25Housing retention and tenant experience
26. 26Rental assistance
27. 27Legal defense and tenant protection
28. 28Diversion and problem solving
29. 29Institutional discharge prevention
30. 30Early-warning indicators
31. 31Physical health
32. 32Behavioral health and substance use
33. 33Homeless Mortality Observatory
34. 34Medi-Cal and CalAIM
35. 35Disability systems
36. 36Arrests and citations
37. 37Encampment operations
38. 38Victimization and personal safety
39. 39Courts, civil rights, and litigation
40. 40Public-space governance
41. 41Race and structural inequality
42. 42Older adults
43. 43Youth and transition-age youth
44. 44Families, children, and pregnancy
45. 45Population-specific system gaps
46. 46Employment and labor participation
47. 47Income and benefits
48. 48Material survival infrastructure
49. 49Digital exclusion
50. 50Education and human-capital disruption
51. 51Fiscal accountability
52. 52Provider performance
53. 53Facilities and property dossiers
54. 54Geographic research
55. 55Governance and institutional architecture
56. 56Climate and environmental exposure
57. 57Public opinion, politics, and media
58. 58Research methodology
59. 59Data Quality Observatory

This registry is an analytical taxonomy, not a claim that all 59 domains currently have complete regional data. It exists to structure evidence discovery, indicator development, public-record targets, research gaps, and future dashboard work without allowing the most visible or politically convenient questions to define the entire research agenda.