Illinois real estate Property Ownership comparison
Encroachment vs. adverse possession: a crossing is not proof of ownership
A fence can sit beyond the deed line without proving that its owner acquired the neighboring strip. First locate the crossing. Then examine the possession history, permission, exact area and applicable law before drawing a title conclusion.
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The short answer
An encroachment describes a physical intrusion, such as a fence or garage crossing a boundary without an established right. Adverse possession concerns ownership acquired when every legal requirement exists for the applicable period. Illinois's ordinary doctrine requires twenty years of qualifying possession, not simply an old improvement. Title can arise by operation of law when the requirements are met; a judgment may establish that result. A survey or an unproven claim does not establish it.
PSI addresses encroachments at national I.C.3 and adverse possession among potential title encumbrances at I.C.4. Property Ownership has 10 of the 100 scored national broker questions across the category, without a quota for this page. The ordinary Illinois doctrine and selected special statutes below are separate routes. Public Act 104-506 takes effect January 1, 2027 and is not an October 2026 ownership shortcut.
Five checks for a boundary question
- Locate the area and identify the claimed authority. Compare the record description, survey and occupation evidence. Find any easement, license or agreement before deciding that a physical crossing is unauthorized. A boundary location and the legal effect of possession are separate questions.
- Test all five groups of elements for the ordinary twenty-year doctrine: continuous; hostile or adverse; actual; open, notorious and exclusive possession; and a claim of title inconsistent with the true owner. These must coexist for the full period. The claimant carries a demanding proof burden; in Joiner, the Supreme Court calls for clear and unequivocal evidence of each element.
- Build the possession history, not just the fence history. Identify the start of qualifying possession, permission, interruptions and successive possessors. Mazal recognizes tacking where the required privity exists. Adding two owners' years does not establish that legal connection or cure a missing element.
- Choose the actual statutory route. Section 13-101 supplies the ordinary twenty-year recovery-of-land limitation, expressly subject to other sections. Sections 13-109 and 13-110 have different seven-year color-of-title and tax conditions. Section 13-109.1 addresses a specified judicial-foreclosure situation. None makes every two-year or seven-year occupation sufficient.
- Separate acquisition, proof and remedy. A mature adverse-possession title can arise by operation of law; it need not begin with a new deed or judgment. Disputed facts may still require a quiet-title action or another appropriate resolution. A physical crossing also does not guarantee removal: authority, harm, equities and the available remedy matter.
| Question | Encroachment | Ordinary Illinois adverse possession |
|---|---|---|
| What is being identified? | A physical intrusion without an established right | Ownership through qualifying possession |
| Does a new structure prove title? | No | No; the full possession history matters |
| How does time matter? | No twenty-year wait is needed to identify a crossing | All required elements must coexist for twenty years |
| What does permission do? | May authorize placement or use within its scope | Permitted possession is not hostile while permission governs |
| What does a survey establish? | Location and occupation evidence | Useful evidence, not a conveyance or a judgment |
| Is a new deed always required? | The intrusion itself conveys nothing | No; matured title can arise by operation of law |
| What should a licensee conclude? | Recognize and document the concern | Refer disputed ownership to qualified legal review |
The distinctions that matter
| Distinction | How it works | What to notice |
|---|---|---|
| Hostile and hostile behavior | Hostile possession is inconsistent with the true owner's rights. It does not require anger or threats. | Permission matters; friendliness alone does not answer the legal question. |
| Mistake and permission | Possession to a mistaken boundary can be adverse. An owner's permission to occupy is a different fact. | Joiner rejects the idea that knowing another holds record title automatically defeats ordinary twenty-year hostility. |
| Claim of title and color of title | A claim of ownership can be shown by possession and conduct. The special color-of-title statutes instead require the specified paper title and limit their benefit to its purport and extent. | Do not require paper color of title for every ordinary twenty-year claim or accept a deed to a different parcel as paper title to the disputed strip. |
| Adverse possession and a prescriptive easement | Adverse possession concerns title. Prescription concerns a nonpossessory use right. Their exclusivity analysis is not identical. | Pobuda explains that prescription does not require ousting the owner. Do not substitute that standard for exclusive ownership possession. |
| Ordinary possession and special statutes | Twenty years is the ordinary doctrine here. The seven-year and specified foreclosure routes require their own additional facts. | Read the conditions before selecting a number. |
| Municipal private property and public-trust property | Mazal distinguishes property a municipality holds privately from property held in trust for public use. | An accepted, statutorily dedicated public alley is not ordinary private neighboring land just because no alley was built. |
| Matured title and a title assertion | A title acquired through completed adverse possession differs from an allegation that enough time has passed. | A court can establish a previously acquired title; that does not let a broker decide disputed possession facts. |
| An intrusion and its remedy | A crossing, lack of authority and entitlement to removal require separate analysis. | JCRE rejects an automatic removal outcome on its particular permission history and equitable facts, without making all encroachments lawful. |
Work through the facts
A genuinely new possession history
A survey shows a fence six inches inside the neighbor's record parcel. The claimant's entire possession of the disputed strip began two years ago; no earlier possession or special statutory facts are stated.
- The crossing presents an encroachment concern.
- Two years does not satisfy the ordinary twenty-year doctrine. A new fence alone would not date every possible earlier use, but this example expressly rules it out.
Answer: The stated facts do not establish ordinary adverse-possession ownership.
Twenty-four years with permission
An owner allows a neighbor to garden on a strip. Permission governs the same use throughout twenty-four years; no adverse change is established.
- The possession may be lengthy and visible.
- Permission leaves the hostility element missing.
Answer: The duration alone does not establish ordinary adverse possession.
A mistaken tree line
Neighbors mistakenly treat an ascertainable tree line as the boundary. A claimant occupies and controls the definite strip as owner for twenty-two years, without permission.
- A fence is not the only possible visible boundary.
- Mistake alone does not defeat hostility under Joiner. Every remaining element, the tract and the period still require proof.
Answer: The mistake is not a sufficient reason to reject the claim. It also does not prove every element.
Two possessors, one claimed strip
A predecessor possesses the same defined private strip for twelve qualifying years, then a successor for ten. The facts do not establish how possession passed between them.
- The arithmetic gives twenty-two years.
- Tacking still requires the necessary privity and continuity, not merely two names on a timeline.
Answer: Investigate the legal connection and all possession elements before combining the periods.
Ownership versus shared access
A claimant and the true owner share a driveway for thirty years under an express courtesy arrangement. The claimant argues that long access establishes exclusive ownership.
- Shared permitted access does not establish adverse, exclusive ownership possession.
- A use right, permission and ownership are different interests; prescription also has its own adverse-use requirements.
Answer: Do not infer title from duration or assume that every shared use automatically establishes prescription.
Tax payments on the wrong land
A buyer occupies a neighbor's corner for seven years but has paper title and tax payments only for the buyer's own separate parcel.
- Section 13-109 requires the specified color of title, possession and taxes on the claimed land.
- A tax payment on another parcel does not fill those missing facts.
Answer: These facts do not establish Section 13-109 ownership of the corner.
A competing tax payment on vacant land
Assume a claimant has good-faith color of title to vacant, unoccupied land and otherwise meets Section 13-110's conditions. During the seven-year term a person with better paper title pays the assessed taxes for one year.
- Section 13-110 expressly addresses this competing payment.
- The claimant cannot ignore it merely because the claimant also made payments.
Answer: The stated better-title payment prevents the claimant from taking the benefit of that section.
An alley that was never built
Land was statutorily dedicated, accepted and held by a municipality in trust as a public alley. It remains in that status. A neighbor claims the ordinary period ran because the alley was never paved or used.
- Mazal rejects that reasoning for its accepted public alley.
- Nondevelopment did not turn the public-trust land into ordinary private land.
Answer: Do not count those public-trust years as ordinary private adverse possession on these facts.
Ownership may predate the judgment
Assume every requirement of ordinary adverse possession was completed on private land in 2024, with no applicable exception. A dispute is adjudicated in 2026.
- The example stipulates completed requirements, not just a claimant's allegation.
- The judgment can establish title already acquired by operation of law. The cited Arbogast order illustrates this timing but is nonprecedential.
Answer: Do not assume the title first arises in 2026 solely because that is the judgment year.
A garage appears before closing
A survey reveals a garage across the record line. The seller says it has been there for decades; no reliable possession history or agreed title resolution is provided.
- An old structure is a reason to investigate, not a substitute for proof.
- Locate the area and review title, permission, history and appropriate documented options with qualified professionals. A proposed easement, license, strip conveyance or relocation must actually address the rights and transaction conditions; no single cure fits every case.
Answer: Treat the title and use concern as unresolved. Do not guarantee either ownership or mandatory demolition.
Mistakes to avoid
- Counting only the age of the fence The relevant history is qualifying possession of the claimed tract. A replacement fence may be recent even when earlier possession is alleged.
- Saying twenty years always creates ownership Every element must coexist for the applicable period, with the required proof and exceptions considered.
- Making a lawsuit the only way title can arise A mature title can arise by operation of law. A judgment may establish whether the legal requirements were met.
- Calling hostility bad faith Hostility concerns an ownership claim inconsistent with the true owner. The ordinary doctrine differs from special good-faith color-of-title routes.
- Using seven years without the statutory facts Possession, paper title, taxes, land status and express exceptions differ by section.
- Treating shared use as exclusive ownership Do not import the prescriptive-easement meaning of exclusivity into an ownership claim.
- Giving a survey the force of a deed It supplies important location evidence, not a conveyance or a final adjudication.
- Guaranteeing an encroachment will be removed An injunction depends on the legal and equitable facts. A small intrusion is not automatically lawful either.
Check your understanding
These are original teaching questions, not recalled or predicted PSI questions. Answer first, then explain why the other choices fail.
1. A fence crosses a record line. The entire claimed possession began two years ago and no special statutory route is stated. Which conclusion fits?
- The crossing establishes title immediately
- There is an encroachment concern, but ordinary twenty-year ownership is not established
- A survey converts the use into an easement
- Two years always satisfies Illinois adverse possession
Show answer and explanation
Answer: B. There is an encroachment concern, but ordinary twenty-year ownership is not established
The crossing and ownership doctrine are different questions. The stated entire history is too short for the ordinary twenty-year route; the facts do not invoke a special statute.
2. An owner permits the same garden use throughout twenty-four years. What prevents time alone from proving ordinary adverse possession?
- The claimant did not buy title insurance
- The garden has no permanent building
- The stated possession remains permissive rather than hostile
- The neighbors have never argued
Show answer and explanation
Answer: C. The stated possession remains permissive rather than hostile
The permission leaves an essential element missing. Hostility does not require anger, and a permanent building is not universally required.
3. What does Joiner teach about a mistaken boundary in the ordinary twenty-year doctrine?
- Mistake does not itself defeat hostility; definite boundaries and all elements still need proof
- A fence must mark every claimed boundary
- Mistake always defeats hostility
- Knowledge of another record owner always defeats hostility
Show answer and explanation
Answer: A. Mistake does not itself defeat hostility; definite boundaries and all elements still need proof
The Supreme Court rejects the contrary hostility rule and examines objective possession to an ascertainable boundary. Neither mistake nor a tree line alone establishes the whole claim.
4. Twelve years of one possessor and ten of another total twenty-two. What remains necessary before tacking?
- A rule that any two occupation periods automatically combine
- Only a new fence installed by the successor
- The required privity, continuity and qualifying possession of the claimed area
- Only proof that both possessors paid the same agent
Show answer and explanation
Answer: C. The required privity, continuity and qualifying possession of the claimed area
Arithmetic does not establish the legal connection or any missing possession element. Mazal recognizes tacking where the required privity exists.
5. Which statement distinguishes adverse possession from prescription?
- Both necessarily transfer fee title
- Prescription requires ousting the landowner in every case
- Adverse possession concerns title; prescription concerns a use right
- Shared permitted access necessarily establishes both
Show answer and explanation
Answer: C. Adverse possession concerns title; prescription concerns a use right
The claimed interest and exclusivity analysis differ. Pobuda rejects an ouster requirement for prescription; it does not eliminate adverse possession's ownership elements.
6. A person pays taxes on the person's own lot while occupying a separate neighbor's corner for seven years, without paper title to that corner. What follows?
- The stated facts do not establish the special color-of-title and tax conditions for the corner
- Seven years alone is enough under Section 13-101
- Occupation makes paper-title boundaries irrelevant under every special statute
- Taxes on any nearby land establish Section 13-109 ownership
Show answer and explanation
Answer: A. The stated facts do not establish the special color-of-title and tax conditions for the corner
Section 13-109 is not a general seven-year shortcut. The specified paper title and taxes must concern the claimed land; the ordinary doctrine is separate.
7. Under Section 13-110, a better paper-title holder pays the assessed taxes for one year during the claimant's seven-year term. What does that fact do?
- It transfers only a driveway easement
- It prevents the claimant from receiving the benefit of that section
- It automatically adds a year to the term
- It is irrelevant if the claimant also paid
Show answer and explanation
Answer: B. It prevents the claimant from receiving the benefit of that section
Section 13-110 expressly states this better-paper-title payment exception. Do not replace it with an invented extension or an easement remedy.
8. Accepted, statutorily dedicated municipal public-alley land was never developed and remains held in trust for public use. What does Mazal support?
- All municipal land can always be adversely possessed
- No Illinois municipal land can ever be held privately
- A neighboring fence automatically vacates the alley
- Nondevelopment alone does not allow ordinary adverse possession to run against that public-trust land
Show answer and explanation
Answer: D. Nondevelopment alone does not allow ordinary adverse possession to run against that public-trust land
Mazal distinguishes public-trust property from municipal property held privately. It rejects nondevelopment as a reason to count the public-alley years in that case.
9. Every ordinary adverse-possession requirement is stipulated complete on private land in 2024, with no applicable exception. A court establishes that ownership in 2026. Which statement is accurate?
- The judgment can recognize ownership already acquired by operation of law
- A new deed is always required before any ownership exists
- The record line necessarily defeats every matured claim
- Only the date of the judgment can start the possession period
Show answer and explanation
Answer: A. The judgment can recognize ownership already acquired by operation of law
Acquisition and later adjudication are distinct. The statement depends on the completed requirements, rather than merely the claimant's assertion that enough years passed.
10. Does a survey showing a garage across a record line necessarily establish either adverse-possession title or a removal injunction?
- It establishes both automatically
- No; ownership and remedy require their own facts and legal analysis
- It establishes title if the garage is old
- It establishes removal unless the garage is less than one foot over
Show answer and explanation
Answer: B. No; ownership and remedy require their own facts and legal analysis
Location evidence is not a conveyance, proof of every possession element or a guaranteed injunction. There is no stated one-foot exception.
11. Which statement about Illinois time periods is most accurate for this page?
- Every good-faith seven-year occupier qualifies, whether or not the paper title covers the land
- Every claim uses twenty years unless the claimant pays any property-tax bill
- Every purchaser at any foreclosure sale qualifies after two years regardless of court-ordered possession or taxes
- The ordinary twenty-year, special seven-year and specified foreclosure rules have different conditions
Show answer and explanation
Answer: D. The ordinary twenty-year, special seven-year and specified foreclosure rules have different conditions
Section 13-101 expressly has exceptions; 13-109 expressly refers to 13-109.1. A number without its qualifying statutory facts is incomplete.
12. Can Public Act 104-506's new intestate co-owner provision be treated as operative in October 2026?
- Yes, appearance in the compiled database always means current effect
- Yes, if a claimant has lived there seven years
- No, its effective date is January 1, 2027
- Yes, because it replaces every other possession doctrine
Show answer and explanation
Answer: C. No, its effective date is January 1, 2027
Enactment or inclusion in a drafting database does not advance the effective date. This future section is distinct from current ordinary and special statutory routes.
Common questions
What is the difference between encroachment and adverse possession?
An encroachment describes a physical intrusion, such as a fence or garage crossing a boundary without an established right. Adverse possession concerns ownership acquired when every legal requirement exists for the applicable period. Illinois's ordinary doctrine requires twenty years of qualifying possession, not simply an old improvement. Title can arise by operation of law when the requirements are met; a judgment may establish that result. A survey or an unproven claim does not establish it.
What are Illinois's ordinary adverse-possession elements?
Joiner states five groups that must coexist for twenty years: continuous; hostile or adverse; actual; open, notorious and exclusive possession; and a claim of title inconsistent with the true owner. It requires clear and unequivocal evidence of each element. Identifying an old fence or counting years alone does not satisfy that burden.
Does hostile possession mean an angry or dishonest neighbor?
No. Hostility means an ownership claim inconsistent with the true owner, not threats or ill will. Under Joiner, knowing another holds record title does not automatically defeat ordinary twenty-year hostility. Do not confuse that rule with the good-faith color-of-title conditions of the special statutes.
Can a mistaken fence or tree line support adverse possession?
A mistaken boundary can matter, but the mistake alone proves neither success nor failure. Joiner examines possession to a visible, ascertainable boundary and requires sufficiently definite identification of the claimed tract. A fence is not universally required, and all possession elements still need proof.
Does the claimant need a new deed or judgment before title can arise?
Not always. Completed adverse possession can vest title by operation of law. A later judgment may establish whether and when that occurred. Arbogast supplies a nonprecedential illustration of that timing; it is not presented as binding precedent. This distinction does not make an unverified ownership claim safe to accept at closing.
What does permission do to a possession claim?
Permitted possession is not hostile while that permission governs. Long use does not repair the missing element. If someone asserts a later adverse change, its legal effect, required notice or communication, starting point and full qualifying period require separate review. Do not count permitted years as already adverse, or assume an owner's silence necessarily proves permission.
Can successive owners add their possession periods?
Sometimes. Mazal recognizes tacking where the required privity exists. The same tract, continuity and qualifying possession remain necessary. A sum such as twelve plus ten years proves the arithmetic, not the legal connection or all other elements.
Is paying property taxes enough to claim a neighbor's land?
No. Section 13-109 addresses actual possession under good-faith claim and color of title, seven successive years and all taxes legally assessed on the claimed land, subject to its express exception. A bill paid on a different parcel does not establish those facts. The ordinary twenty-year doctrine is a different route.
What is different about vacant land under Section 13-110?
That section addresses good-faith color of title to vacant and unoccupied land and all assessed taxes for seven successive years, to the extent of the paper title. Its better-paper-title tax-payment exception matters. Do not turn this selected summary into a rule that every empty lot can be obtained by paying a bill.
Are seven years and twenty years the only possible Illinois periods?
No. Section 13-101 expressly recognizes other statutory provisions, and Section 13-109 refers to the specified judicial-foreclosure route in Section 13-109.1. The latter includes a two-successive-year condition with particular purchaser, possession, paper-title and tax facts. It is not a two-year rule for ordinary neighboring encroachments. This page does not catalog every limitation, disability or exception.
Can ordinary adverse possession run against a public alley?
Mazal holds that it did not run while the accepted, statutorily dedicated alley was held in trust for public use, even though it was never developed as an alley. The court distinguishes municipal property held privately. Determine the actual public status rather than assume all government property follows one rule.
Does shared driveway use prove ownership or prescription?
No. Shared permitted access does not establish exclusive adverse ownership. A prescriptive easement is a different claim, and Pobuda explains that its exclusivity requirement does not demand excluding the landowner. Permission and the remaining prescription elements still matter.
What can a survey tell me about an encroachment?
A survey supplies important evidence of record lines, improvements and occupation. It does not convey the strip or decide every legal effect of historical possession. Use it with title documents, agreements and reliable history, with the relevant professional reviewing unresolved location or ownership questions.
Does every encroachment have to be removed?
A crossing alone does not guarantee a removal injunction. JCRE separates the lack of continuing permission from the equitable remedy on its particular facts. That does not make small or inconvenient-to-remove encroachments automatically lawful. Removal, a documented grant or another resolution depends on the actual rights and circumstances.
What changes on January 1, 2027?
Public Act 104-506 adds Section 13-109.2 for specified tenancy-in-common interests acquired through intestate succession, with multiple conditions and procedures. Its effective date is January 1, 2027. It is not operative in October 2026 and does not replace every existing possession route. This page does not provide a filing or notice procedure for the future provision.
What should a licensee do with a disputed strip before closing?
Document the known concern, obtain the relevant survey and title materials and direct disputed ownership and remedy questions to qualified legal review. Do not promise the seller owns the strip, erase a title exception or guarantee demolition. The parties need an appropriate resolution of the actual use, title and financing issues rather than an unsupported age-of-structure claim.
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Official sources and scope
The ordinary doctrine comes from the current limitation provision and published Illinois decisions. Separate statutes supply the selected special routes. Arbogast is an expressly nonprecedential Rule 23 illustration of acquisition before a later judgment, not binding precedent. The future Public Act is included to distinguish its effective date. Original examples state their assumptions; they do not determine a private boundary, title or remedy.
- PSI June 24, 2026: national I.C.3 and I.C.4
- 735 ILCS 5/13-101: ordinary period and express exceptions
- 735 ILCS 5/13-109: possession, color of title and taxes
- 735 ILCS 5/13-110: vacant land and the better-title tax exception
- 735 ILCS 5/13-109.1: a specified judicial-foreclosure route
- Joiner v. Janssen, 85 Ill. 2d 74 (1981): elements, mistake and proof
- Mazal v. Arias, 2019 IL App (1st) 190660: tacking and public-trust land
- Arbogast v. Schaub, 2021 IL App (3d) 200235-U: nonprecedential timing illustration
- JCRE Holdings, LLC v. GLK Land Trust, 2019 IL App (3d) 180677
- Nationwide Financial, LP v. Pobuda, 2014 IL 116717
- Mueller v. Keller, 18 Ill. 2d 334 (1960): permission and equitable limits
- Public Act 104-0506: Section 13-109.2 effective January 1, 2027
This is exam preparation, not advice for a specific transaction. State law and the applicable facts control. Our editorial and corrections process explains how to report an issue.