1. Forged deeds, mortgages, satisfactions, or releases.
2. Deed by person who is insane or mentally incompetent.
3. Deed by minor (may be disavowed).
4. Deed from corporation, unauthorized under corporate by-laws or given under falsified corporate resolution.
5. Deed from partnership, unauthorized under partnership agreement.
6. Deed from purported trustee, unauthorized under trust agreement.
7. Deed to or from a “corporation” before incorporation, or after loss of corporate charter.
8. Deed from a legal nonentity (styled, for example, as a church, charity, or club).
9. Deed by person in a foreign country, vulnerable to challenge as incompetent, unauthorized, or defective under foreign laws.
10. Claims resulting from use of “alias” or fictitious name style by a predecessor in title.
11. Deed challenged as being given under fraud, undue influence, or duress.
12. Deed following non-judicial foreclosure, where required procedure was not followed.
13. Deed affecting land in judicial proceedings (bankruptcy, receivership, probate, conservatorship, dissolution of marriage) unauthorized by court.
14. Deed following judicial proceedings subject to appeal or further court order.
15. Deed following judicial proceedings where all necessary parties were not joined.
16. Lack of jurisdiction over persons or property in judicial proceedings.
17. Deed signed by mistake (Grantor did not know what was signed).
18. Deed executed under falsified Power of Attorney.
19. Deed executed under expired Power of Attorney (death, disability, or insanity of principal).
20. Deed apparently valid, but actually delivered after death of Grantor or Grantee, or without consent of Grantor.
21. Deed affecting property purported to be separate property of Grantor, which is in fact community or jointly owned property.
22. Undisclosed divorce of one who conveys as sole heir of a deceased former spouse.
23. Deed affecting property of deceased person, not joining all heirs.
24. Deed following administration of estate of missing person who later reappears.
25. Conveyance by heir or survivor of a joint estate who murdered the decedent.
26. Conveyances and proceedings affecting the rights of service member protected by the Soldiers and Sailors Civil Relief Act.
27. Conveyance void as in violation of public policy (payment of gambling debt, payment for contract to commit crime, or conveyance made in restraint of trade).
28. Deed to land including “wetlands” subject to public trust (visiting title in government to protect public interest in navigation, commerce, fishing, and recreation).
29. Deed from government entity, vulnerable to challenge as unauthorized or unlawful.
30. Ineffective release of properly satisfied mortgage due to acquisition of note by bona-fide purchaser (without notice of satisfaction).
31. Ineffective release of prior satisfied mortgage due to bankruptcy of creditor prior to recording of release (avoiding powers in bankruptcy).
32. Ineffective release of prior mortgage or lien, as fraudulently obtained by predecessor in title.
33. Disputed release of prior mortgage or lien, as given under mistake or misunderstanding.
34. Ineffective subordination agreement causing junior interest to be reinstated to priority.
35. Deed recorded but not properly indexed so as to be locatable in the land records.
36. Undisclosed but recorded federal or state tax lien.
37. Undisclosed but recorded judgment or spousal/child support lien.
38. Undisclosed but recorded prior mortgage.
39. Undisclosed but recorded notice of pending lawsuit affecting land.
40. Undisclosed but recorded environmental lien.
41. Undisclosed but recorded option, or right of first refusal, to purchase property.
42. Undisclosed but recorded covenants or restrictions, with (or without) rights of reverter.
43. Undisclosed but recorded easements (for access, utilities, drainage, airspace, views) benefiting neighboring land.
44. Undisclosed but recorded boundary, party wall, or setback agreements.
45. Errors in tax record (mailing tax bill to wrong party resulting in tax sale or crediting payment to wrong property).
46. Erroneous release of tax or assessment liens, which are later reinstated to the tax rolls.
47. Erroneous reports furnished by tax officials (not binding local government).
48. Special assessments, which become liens upon passage of a law or ordinance, but before recorded notice or commencement of improvements of which assessment is made.
49. Adverse claim of vendor’s lien.
50. Adverse claim of equitable lien.
51. Ambiguous covenants or restrictions in ancient documents.
52. Misinterpretation of wills, deed, and other instruments.
53. Discovery of will of supposed intestate individual, after probate.
54. Discovery of later will after probate of first will.
55. Erroneous or inadequate legal descriptions.
56. Deed to land without a right of access to a public street or road.
57. Deed to land with legal access subject to undisclosed but recorded conditions or restriction.
58. Right of access wiped out by foreclosure on neighboring land.
59. Patent defects in recorded instruments (for example failure to attach notarial acknowledgement or a legal description).
60. Defective acknowledgement due to lack of authorization of notary (acknowledgment taken before commission or after expiration of commission).
61. Forged notarization or witness acknowledgment.
62. Deed not properly recorded (wrong county, missing pages or other contents, or without required payment).
63. Deed from Grantor who is claimed to have acquired title through fraud upon creditors of a prior owner.
64. Deed to a purchaser from one who has previously sold or leased the same land to a third party under an unrecorded contract, where the third party is in possession of the premises.
65. Claimed prescriptive rights, not of record and not disclosed by survey.
66. Physical location of easement (underground pipe sewer line), which does not conform with easement of record.
67. Deed to land with improvements encroaching up land of another.
68. Incorrect survey (misstating location, dimensions, area easements, or improvements upon land).
69. “Mechanics’ lien” claims (securing payment of contractors and material suppliers for improvements) which may attach without recorded notice.
70. Federal estate or state inheritance tax liens (may attach without recorded notice).
71. Preexisting violation of subdivision mapping laws.
72. Preexisting violation of zoning ordinances.
73. Preexisting violation of conditions, covenants, and restrictions (CC&Rs) affecting the land.