1. **LoopNet:** A commercial real estate listing service that often includes multifamily properties. You can search for properties by location and property type. Website: [LoopNet](https://www.loopnet.com/) 

2. **CoStar:** Another commercial real estate database that provides information on multifamily properties, including ownership details. Website: [CoStar](https://www.costar.com/) 

3. **Local Property Appraiser’s Office:** Many counties have a property appraiser’s office that maintains records of property ownership. You can often search for ownership information on their website or visit their office in person. 

4. **Real Estate Investment Associations (REIA):** Joining a local REIA can give you access to networking opportunities and resources for finding multifamily property owners. 

5. **Real Estate Agents:** Working with a real estate agent who specializes in multifamily properties can help you find properties and connect with property owners. 

6. **Online Property Databases:** Websites like Zillow, Redfin, and Realtor.com can sometimes provide information on property ownership for multifamily properties. 

7. **Networking Events:** Attending real estate networking events and conferences can help you connect with property owners and other real estate professionals. 

8. **QPublic:** QPublic provides access to public records for property ownership, assessments, and tax information. Website: [QPublic](https://qpublic.schneidercorp.com/) 

9. PropertyShark: PropertyShark offers property records, ownership data, and sales history for multifamily properties. 

Website: PropertyShark 

10. RealQuest Express: RealQuest Express provides property information, including ownership details, sales history, and property value estimates. 

Website: RealQuest Express 

11. Reonomy: Reonomy offers a comprehensive database of commercial real estate properties, including multifamily properties, with ownership information. 

Website: Reonomy 

12. LandVision: LandVision provides property data, including ownership details, zoning information, and parcel boundaries, for multifamily properties. 

Website: LandVision 

13-62. State-specific resources: Each state’s Department of Revenue or equivalent department often provides property tax information, which can include ownership details for multifamily properties. 

9. **PropertyShark:** PropertyShark offers property records, ownership data, and sales history for multifamily properties. Website: [PropertyShark](https://www.propertyshark.com/) 

10. **RealQuest Express:** RealQuest Express provides property information, including ownership details, sales history, and property value estimates. Website: [RealQuest Express](https://www.realquest.com/) 

11. **Reonomy:** Reonomy offers a comprehensive database of commercial real estate properties, including multifamily properties, with ownership information. Website: [Reonomy](https://www.reonomy.com/) 

12. **LandVision:** LandVision provides property data, including ownership details, zoning information, and parcel boundaries, for multifamily properties. Website: [LandVision](https://www.digmap.com/products/landvision) 

13. **Alabama:** [Alabama Department of Revenue – Property Tax](https://revenue.alabama.gov/property-tax/) 

14. **Alaska:** [Alaska Department of Revenue – Property Tax](https://www.commerce.alaska.gov/web/Portals/11/pub/PropertyTax/ptdhomepage.html) 

15. **Arizona:** [Arizona Department of Revenue – Property Tax](https://azdor.gov/property-tax) 

16. **Arkansas:** [Arkansas Assessment Coordination Department](https://www.arkansasassessment.com/) 

17. **California:** [California State Board of Equalization – Property Taxes](https://www.boe.ca.gov/prop19/) 

18. **Colorado:** [Colorado Division of Property Taxation](https://www.colorado.gov/pacific/dola/property-taxation) 

19. **Connecticut:** [Connecticut Office of Policy and Management](https://portal.ct.gov/opm) 

20. **Delaware:** [Delaware County Assessor’s Office](https://www.co.delaware.pa.us/property.html) 

21. **Florida:** [Florida Department of Revenue – Property Tax](https://floridarevenue.com/property/Pages/default.aspx) 

22. **Georgia:** [Georgia Department of Revenue – Property Tax](https://dor.georgia.gov/property-tax) 

23. **Hawaii:** [Hawaii Real Property Tax Division](https://www.realpropertyhonolulu.com/) 

24. **Idaho:** [Idaho State Tax Commission – Property Tax](https://tax.idaho.gov/i-1023.cfm) 

25. **Illinois:** [Illinois Department of Revenue – Property Tax](https://www2.illinois.gov/rev/localgovernments/property/Pages/default.aspx) 

26. **Indiana:** [Indiana Gateway for Local Government](https://gateway.ifionline.org/) 

27. **Iowa:** [Iowa Department of Revenue – Property Tax](https://tax.iowa.gov/property-tax) 

28. **Kansas:** [Kansas Department of Revenue – Property Tax](https://www.ksrevenue.org/) 

29. **Kentucky:** [Kentucky Department of Revenue – Property Tax](https://revenue.ky.gov/Property/Pages/default.aspx) 

30. **Louisiana:** [Louisiana Tax Commission](https://www.latax.state.la.us/Menu_LTA/FAQs.aspx) 

31. **Maine:** [Maine Revenue Services – Property Tax](https://www.maine.gov/revenue/propertytax/) 

32. **Maryland:** [Maryland Department of Assessments and Taxation](https://dat.maryland.gov/realproperty/Pages/default.aspx) 

33. **Massachusetts:** [Massachusetts Department of Revenue](https://www.mass.gov/orgs/massachusetts-department-of-revenue) 

34. **Michigan:** [Michigan Department of Treasury – Property Tax](https://www.michigan.gov/taxes/) 

35. **Minnesota:** [Minnesota Department of Revenue – Property Tax](https://www.revenue.state.mn.us/property-tax) 

36. **Mississippi:** [Mississippi Department of Revenue – Property Tax](https://dor.ms.gov/Property/Pages/default.aspx) 

37. **Missouri:** [Missouri Department of Revenue](https://dor.mo.gov/) 

38. **Montana:** [Montana Department of Revenue – Property Tax](https://mtrevenue.gov/property/) 

39. **Nebraska:** [Nebraska Department of Revenue – Property Assessment](https://revenue.nebraska.gov/) 

40. **Nevada:** [Nevada Department of Taxation 

– Property Tax](https://tax.nv.gov/FAQs/Property_Tax_FAQs/) 

41. **New Hampshire:** [New Hampshire Department of Revenue Administration](https://www.revenue.nh.gov/mun-prop/index.htm) 

42. **New Jersey:** [New Jersey Division of Taxation – Property Tax](https://www.state.nj.us/treasury/taxation/propfrez.shtml) 

43. **New Mexico:** [New Mexico Department of Finance and Administration](https://www.tax.newmexico.gov/) 

44. **New York:** [New York Department of Taxation and Finance – Property Tax](https://www.tax.ny.gov/pit/property/default.htm) 

45. **North Carolina:** [North Carolina Department of Revenue](https://www.ncdor.gov/) 

46. **North Dakota:** [North Dakota State Government – Property Tax](https://www.nd.gov/tax/user/individuals/forms–publications/property-tax) 

47. **Ohio:** [Ohio Department of Taxation – Real Property Tax](https://www.tax.ohio.gov/real_property.aspx) 

48. **Oklahoma:** [Oklahoma Tax Commission – Assessor’s Office](https://www.ok.gov/tax/Individuals/Property_Tax/County_Assessor_Offices/index.html) 

49. **Oregon:** [Oregon Department of Revenue – Property Tax](https://www.oregon.gov/DOR/programs/property/Pages/default.aspx) 

50. **Pennsylvania:** [Pennsylvania Department of Revenue – Property Tax](https://www.revenue.pa.gov/GeneralTaxInformation/PropertyTax/Pages/default.aspx) 

51. **Rhode Island:** [Rhode Island Division of Taxation – Property](http://www.tax.ri.gov/property/) 

52. **South Carolina:** [South Carolina Department of Revenue](https://dor.sc.gov/) 

53. **South Dakota:** [South Dakota Department of Revenue – Property](https://dor.sd.gov/Taxes/Property_Taxes/) 

54. **Tennessee:** [Tennessee Comptroller of the Treasury](https://comptroller.tn.gov/boards/state-board-of-equalization/county-property-assessment.html) 

55. **Texas:** [Texas Comptroller of Public Accounts – Property Tax](https://comptroller.texas.gov/taxes/property-tax/) 

56. **Utah:** [Utah State Tax Commission – Property Tax](https://tax.utah.gov/) 

57. **Vermont:** [Vermont Department of Taxes – Property](https://tax.vermont.gov/property-owners) 

58. **Virginia:** [Virginia Department of Taxation – Real Estate Assessments](https://www.tax.virginia.gov/) 

59. **Washington:** [Washington Department of Revenue](https://dor.wa.gov/) 

60. **West Virginia:** [West Virginia State Tax Department – Property Tax](https://revenue.wv.gov/Pages/default.aspx) 

61. **Wisconsin:** [Wisconsin Department of Revenue – Property Tax](https://www.revenue.wi.gov/Pages/FAQS/pcs-PropertyTaxHome.aspx) 

62. **Wyoming:** [Wyoming Department of Revenue – Property Tax](https://www.wyoleg.gov/Legislation/2012/SF0104)