Real estate glossary and exam guide
Nonconforming use: check the history and the limits
An old repair shop in a residential district is not necessarily illegal. It may have protected nonconforming status. But age, a rent roll or a seller's assurance cannot settle the question. Find the rule that applied, the use actually established and the events that followed. Those facts determine what can continue.
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The short answer
A legal nonconforming use is an existing use protected from a later, conflicting zoning restriction. The usual starting point is a use lawfully established before the restriction applied. Continued protection depends on the governing law, local ordinance and actual history. It differs from a newly granted variance. Age alone does not make an illegal use lawful. The protected activity, area and conditions matter; the status does not automatically authorize expansion or excuse applicable safety requirements.
Reviewed October 25, 2026. PSI national II.B covers government controls on land use. The whole Land Use Controls domain has 5 of 100 scored national broker questions, with no nonconforming-use quota. This lesson uses identified Illinois statutory paragraphs, published opinions and a labeled Chicago code example. Local categories and exceptions matter. It is not a determination of a particular property's status, a complete local-code audit or advice about a specific appeal deadline.
Build the timeline before describing the right
- Identify the actual use and jurisdiction. Separate the activity from a building setback, lot size, parking or sign issue. An annexation can put a property under a different zoning authority; it is not always the same issue as an amendment by the authority already regulating it.
- Establish the governing history. Obtain the earlier ordinance and map, evidence of the activity and its extent, and approvals that were actually required. A missing document is a reason to investigate, not a substitute for finding what the law required. Tax records and utility bills can support a timeline without proving zoning legality by themselves.
- Identify the change or recognition that matters. Both the municipal and county enabling statutes address existing lawful uses and specified gradual elimination. Read the local ordinance and any actual annexation or recognition record within the governing law. Do not treat every old use as legal or every annexation as an amnesty.
- Trace what happened afterward. Look for changes in activity or area, closures, conversion to a conforming use, damage, demolition, permits, repair work, certificates and enforcement. A sale does not by itself create a new right or reset a discontinuance clock.
- Apply the correct category and conditions. Local rules distinguish uses, structures, lots and other nonconformities. Repair, substitution and expansion may have different permissions or approval requirements. Neither every increase is automatically allowed nor every change is automatically forbidden.
- Keep time periods local. Chicago's published general use-discontinuance provision uses 18 continuous months, but its adult-use and open-land category uses 6 months, and specified coach houses have separate rules. Those are Chicago examples, not Illinois-wide deadlines. Check other applicable provisions before deciding that a right has ended.
- Get the current official file and act promptly on a dispute. Preserve the actual certificate, correspondence, history and decision. Official assurances can matter, but the FLM decision depended on specific facts and substantial justified reliance. Identify the proper administrative or judicial route with qualified counsel; do not assume informal discussions stop a filing clock.
| Type | What fails the current rule | Example |
|---|---|---|
| Use | Activity conducted on the property | Older repair shop in a residential district |
| Structure | Physical placement or bulk | Lawfully built house inside today's side setback |
| Lot | Parcel area, width, depth, or frontage | Lawfully created 40-foot lot where 60 feet is now required |
| Site feature | Parking, sign, landscape, access, or screening standard | Older parking lot with fewer required spaces |
The distinctions that matter
| Distinction | How it works | What to notice |
|---|---|---|
| Legal nonconforming use vs. illegal use | Normally the distinction is lawful establishment before a conflicting zoning rule versus a use that violated the applicable rule. Passage of time alone does not create protection. Particular annexation, official-recognition or equitable issues need their own legal analysis. | Lawful then versus unlawful from the start. |
| Nonconforming use vs. variance | Nonconforming status usually rests on lawful history before a conflicting rule, with any recognition or annexation issues examined separately. A variance is affirmative relief granted through a specific application and the required findings. | Existing protected status versus a new approval. |
| Nonconforming use vs. special use | A nonconforming use is not currently listed as permitted but may continue due to prior lawfulness. A special use is currently contemplated by the ordinance after approval under standards. | Old protected use versus current conditional use. |
| Nonconforming use vs. nonconforming structure | A use nonconformity concerns activity. A structure nonconformity concerns physical standards such as setback, height, or coverage. | What happens there versus how the building sits. |
| Nonconforming lot vs. nonconforming building | A nonconforming lot fails current area, width, or frontage rules. A nonconforming building fails current physical development standards. | Parcel geometry versus structure geometry. |
| Continuation vs. expansion | Continuation stays within the protected activity and extent. New land, floor area, units or other changes can trigger expansion rules. The ordinance determines whether a change in volume, hours or intensity counts and whether approval is available. | Existing protected extent versus a proposed change. |
| Discontinuance vs. abandonment | Read the exact terms in the applicable ordinance. A defined period of ceased operations may have consequences without an additional universal intent requirement. Evidence of intent or repair efforts does not automatically defeat every objective rule. | Apply the actual code; do not invent an intent requirement. |
| Vacancy vs. loss of status | Vacancy is a factual period without occupancy. Loss of status is the legal consequence only if the ordinance and evidence make vacancy a qualifying discontinuance or abandonment. | Empty space versus terminated right. |
| Repair vs. reconstruction | Repair maintains or restores components. Reconstruction may recreate a substantially damaged or removed nonconforming structure and can trigger stricter limits or loss. | Maintain parts versus rebuild the whole. |
| Ownership transfer vs. use change | A transfer changes the owner. A use change alters the activity. Chicago expressly says status runs with the land and is unaffected by changes in tenancy, ownership or management. The buyer still must verify what valid status remains. | Who owns versus what occurs. |
| Zoning status vs. business license | Zoning status addresses lawful land use. A business license authorizes regulated business activity and may expire annually without proving zoning rights. | Land-use legality versus operating credential. |
| Protected zoning status vs. code immunity | Nonconforming status may protect a use or structure from a later zoning rule. It does not generally excuse current fire, health, safety, licensing, environmental, or maintenance duties. | Zoning continuation versus all-law exemption. |
Work through the facts
A lawful shop survives rezoning
A repair shop opened with all required approvals in 1995. In 2026 the village rezones the parcel residential, and its ordinance permits lawful existing uses to continue without expansion.
- The shop was lawful before the map change.
- The 2026 rezoning created the current mismatch.
- The shop may continue within its established protected extent, subject to the ordinance and other applicable requirements.
Answer: The shop is a legal nonconforming use, not an illegal use created by the rezoning.
An old illegal unit remains illegal
An owner divided a house into three apartments in 2008 without required zoning or building approval. The district allowed only one dwelling then and still does today.
- Age alone does not create legality.
- The three-unit use was not lawful when established.
- No later zoning change created a protected status on these facts.
Answer: The extra units are not legal nonconforming merely because they have existed for years.
Use conforms, structure does not
A single-family house is permitted in its district, but the house was lawfully built five feet from the side line before the setback increased to ten feet.
- The residential activity remains a conforming use.
- The building placement fails the newer dimensional rule.
- The protected condition is a nonconforming structure or building element, not a nonconforming residential use.
Answer: Classify the setback as a structural nonconformity.
Expansion beyond historic land area
A protected nonconforming outdoor-storage yard historically occupied one acre. Its governing ordinance prohibits extension onto additional land. The owner buys an adjoining acre and starts storing equipment there without approval.
- The protected extent is supported only for the original acre.
- Using new land enlarges the physical scope of the nonconforming activity.
- The supplied prohibition makes the additional acre a problem. It does not establish that every increase in business volume on every property is prohibited.
Answer: The original use may remain protected, but the adjoining-acre expansion is not automatically grandfathered.
Temporary vacancy during repairs
A lawful two-unit building becomes vacant after a pipe failure. The owner promptly obtains permits and continuously works on repairs, but no tenants occupy it for 14 months. The ordinance refers separately to discontinuance and intent.
- The actual definition and time period are not supplied. Fourteen months of vacancy alone cannot answer the legal question.
- Permits, construction progress, insurance records, and consistent owner conduct can show an intent to resume.
- The official decision must apply the actual discontinuance and abandonment language to the complete record.
Answer: Do not declare the status lost or preserved from vacancy alone.
A conforming conversion can end the old use
An ordinance says a nonconforming use changed to a conforming use may not later return. An old factory is legally converted to apartments, and a later buyer wants factory operations again.
- The apartment conversion made the property conforming under the supplied rule.
- The ordinance bars restoration of the former nonconforming factory use.
- The buyer needs a current zoning approval route rather than relying on historic factory activity.
Answer: The old factory use cannot be revived as nonconforming under the supplied ordinance.
Major damage triggers the local threshold
A fictional local ordinance allows restoration only if qualifying damage is below 50% of replacement cost and work starts within six months. The defined damage is $190,000 and replacement cost is $400,000. The insurance payout is $220,000.
- Use the ordinance's damage measure: $190,000 / $400,000 = 47.5%. The insurance payout is a different figure.
- The stated damage is below 50%, but that does not eliminate the six-month start requirement or other applicable conditions.
- Damage of exactly 50% would not satisfy this example's strictly below-50% condition.
Answer: The numbers meet the supplied damage limit only. Check the remaining conditions; this is not an Illinois-wide 50% or six-month rule.
The category changes the Chicago clock
For this exercise, apply Chicago section 17-15-0304-A and assume no other provision or event changes the result. An ordinary non-adult use inside a building and a nonconforming open use of land each stop operating for seven continuous months.
- The general use period is 18 continuous months.
- The adult-use or open-land category has a six-continuous-month period.
- Seven months does not complete the first period but exceeds the second. Do not copy one category's clock to the other.
Answer: Under the supplied assumptions, the six-month open-land rule is triggered; seven months alone does not complete the general 18-month period.
Some Chicago expansion can follow an approval process
A nonconforming use seeks more space inside the same Chicago building. Assume it is outside the express prohibited categories and satisfies the stated parking/loading, bulk/density and neighborhood-impact conditions.
- Published section 17-15-0303-A provides an administrative-adjustment path for qualifying expansion.
- Meeting conditions is not the same as already receiving the required approval.
- The express prohibitions and any other applicable rules still have to be checked.
Answer: Investigate the authorized approval route rather than assume either automatic permission or a universal expansion ban.
A confirmation letter and a later revocation
Before buying, an owner obtains specific official confirmation that a nonconforming-use certificate remains valid, relies on it to purchase and later receives a revocation.
- Preserve the actual representations, the official's authority, the facts disclosed and evidence of reliance.
- FLM applied equitable estoppel on its particular record of official confirmations and substantial justified reliance; it did not make every staff statement irrevocable.
- The buyer still needs timely qualified review of the actual revocation and available remedies.
Answer: The letter is relevant evidence, not a broker's authority to promise that the use can continue forever.
Annexation is not always just another rezoning
An established commercial use comes under a village's zoning authority for the first time through annexation. The record shows affirmative recognition of the use as part of an as-is annexation. A dispute focuses only on the earlier county classification.
- Giannakopolous involved a particular initial zoning by a new authority and the village's recognition of an established use.
- The court distinguished that situation from an amendment by the authority already regulating the property.
- The actual annexation record and law matter. No automatic cure for every past violation follows.
Answer: Analyze the annexation and recognition facts; do not reduce every such case to the earlier county label alone.
Safe repair is not permission for a new unit
A Chicago owner proposes incidental repairs to keep an existing nonconformity safe, then adds a third dwelling unit to the same permit sketch. Assume the repairs are not otherwise expressly prohibited.
- Section 17-15-0105 addresses safe condition and incidental repairs or normal maintenance.
- That repair permission is not an automatic zoning approval for an additional unit.
- Evaluate the added unit under the actual use, density, expansion and approval rules.
Answer: Separate maintaining the existing condition from the proposed increase in units.
Mistakes to avoid
- Calling every old use grandfathered Start with lawful establishment before the conflicting rule and trace whether protection continues. A particular annexation or official-recognition record may require additional analysis; age alone is not enough.
- Letting years of illegal operation create legality Delay in enforcement does not automatically transform an illegal use into a legal nonconforming use.
- Using nonconforming use and variance as synonyms One arises from lawful history; the other is new relief granted through findings.
- Calling a setback problem a use problem Separate the activity from the structure, lot, sign, parking, or other physical nonconformity.
- Protecting the entire parcel without defining scope Identify the protected use and extent from the actual record. Proposed changes in area, units, capacity or activity must be evaluated under the applicable local rules.
- Assuming sale ends the use Ownership change alone may not terminate status, though the buyer receives only the right that still exists.
- Assuming sale revives a lost use A buyer cannot restore a status already ended by discontinuance, abandonment, conversion, destruction, or another code event.
- Treating maintenance as expansion Read the ordinance. Ordinary repair can be allowed even when additions or increased intensity are barred.
- Treating every renovation as maintenance Structural alteration, footprint growth, new units, or increased use can exceed protected maintenance.
- Declaring abandonment from vacancy alone Apply the ordinance's discontinuance period, intent standard, exceptions, and evidence.
- Letting intent defeat an objective discontinuance rule automatically Read the actual discontinuance definition, period and exceptions. Do not assume that a stated intent to reopen defeats every objective condition.
- Using insurance value as the zoning damage test Apply the ordinance's defined measure, percentage, official determination, and reconstruction deadline.
- Assuming zoning status excuses safety codes Nonconforming protection does not generally immunize current fire, health, building, environmental, or licensing violations.
- Ignoring appeal deadlines A revocation or interpretation may trigger a short administrative clock even while the owner gathers historical proof.
- Calling these official PSI questions These are original practice items. A short set is not a validated measure of exam readiness or an opinion on a real property.
Check your understanding
These are original teaching questions, not recalled or predicted PSI questions. Answer first, then explain why the other choices fail.
1. What is a legal nonconforming use?
- A new variance automatically issued when property sells
- A current special use merely awaiting its first approval
- Every old use for which no records survive
- An existing use protected from a later conflicting zoning restriction because of its lawful history
Show answer and explanation
Answer: D. An existing use protected from a later conflicting zoning restriction because of its lawful history
Lawful origin and a later regulatory change are the essential starting facts.
2. A prohibited apartment has operated for 15 years. No later approval, recognition or other legal basis is established. Does age alone make it legal nonconforming?
- No; passage of time alone does not establish protected status
- Yes; the assessor description is equivalent to a zoning approval
- No; a nonconforming use can never lawfully continue
- Yes; the current rent history replaces the need to establish zoning status
Show answer and explanation
Answer: A. No; passage of time alone does not establish protected status
On these facts, age alone supplies no legal basis. Establish the applicable history and any actual approval or recognition instead of treating years of rent as zoning permission.
3. A permitted house sits inside today's setback but was lawfully built before the setback changed. What is nonconforming?
- The fee-simple ownership merely because the rule changed
- The residential activity, which remains allowed
- A special-use approval automatically created by the setback change
- The structure's setback
Show answer and explanation
Answer: D. The structure's setback
The use still conforms, while the physical placement does not.
4. What is the best evidence that a use was lawful when established?
- Only a current business license with no history review
- Contemporaneous approvals that were required, the ordinance then in force and the actual use history
- Only a recent assessor description
- Only the broker's new marketing description
Show answer and explanation
Answer: B. Contemporaneous approvals that were required, the ordinance then in force and the actual use history
Historical official records link the actual use to the law and approvals of the time.
5. A protected yard adds storage on an adjoining acre. The supplied ordinance prohibits extension onto additional land. What is the direct issue?
- An ordinary repair with no use change
- Expansion beyond the protected extent
- Automatic legal continuation on every newly purchased parcel
- A new variance created merely by buying the land
Show answer and explanation
Answer: B. Expansion beyond the protected extent
The additional acre extends the activity beyond the historical land area. The stated ordinance prohibits that extension; no building-area change is necessary to reach this answer.
6. Does temporary vacancy always terminate nonconforming status?
- No; the actual discontinuance or abandonment rules and facts must be applied
- Yes; any one-day vacancy ends every nonconforming use
- Yes; selling a vacant building always ends all zoning rights
- No; every stated intention to reopen preserves status indefinitely
Show answer and explanation
Answer: A. No; the actual discontinuance or abandonment rules and facts must be applied
Local rules differ on periods, intent, involuntary interruption, repairs, and other facts.
7. A local code says changing a nonconforming use to a conforming use ends the old right. What happens after a lawful conversion?
- The old use cannot be revived under that supplied rule
- The old use is automatically rezoned as permitted
- The conformity rule applies only if the seller agrees
- Every buyer can switch back because ownership changed
Show answer and explanation
Answer: A. The old use cannot be revived under that supplied rule
The supplied ordinance makes the conforming conversion a terminating event.
8. A supplied local restoration rule requires damage below 50% of replacement cost. Defined damage is $190,000, replacement cost is $400,000 and insurance pays $220,000. Which is correct?
- The stated rule allows exactly 50% as below 50%
- The defined damage is 47.5%, meeting only this numerical condition
- Meeting this percentage automatically waives all other conditions
- The insurance payout fixes zoning damage at 55%
Show answer and explanation
Answer: B. The defined damage is 47.5%, meeting only this numerical condition
$190,000 / $400,000 = 47.5%. Use the defined damage measure and still check the other conditions. These numbers and this threshold are an exercise, not a statewide rule.
9. Does nonconforming status excuse a dangerous electrical violation?
- Yes; the absence of a recent zoning amendment removes electrical rules
- No; repairing the wiring alone grants approval to expand the use
- No; zoning continuation is not a blanket safety-code exemption
- Yes; every protected use is exempt from repair duties
Show answer and explanation
Answer: C. No; zoning continuation is not a blanket safety-code exemption
Zoning continuation is not blanket immunity from health, safety, building, fire, or environmental law.
10. What should a broker verify before marketing income from a nonconforming use?
- The current rent roll and a sales comparable, without checking the zoning history
- The building age and current assessment, without checking the protected extent
- The seller's recollection, without checking permits or enforcement
- Lawful origin, extent, continuity, current ordinance, permits, conditions, and enforcement history
Show answer and explanation
Answer: D. Lawful origin, extent, continuity, current ordinance, permits, conditions, and enforcement history
The income's sustainability depends on the actual legal status and scope.
11. For this exercise, Chicago's general 18-month use rule and its separate six-month open-land rule apply with no other modifying provisions. Both uses cease for seven continuous months. Which is correct?
- The open-land period is always one year throughout Illinois
- Seven months completes the six-month open-land period but not the general 18-month period
- Both periods restart when the property sells
- Every use is governed by 18 months regardless of category
Show answer and explanation
Answer: B. Seven months completes the six-month open-land period but not the general 18-month period
Use the category supplied. The seven-month interruption exceeds six months but does not reach eighteen. Other categories and provisions must be checked in a real case.
12. Under the stated Chicago rule, a nonconforming use seeks expansion into another part of the same building and satisfies the listed conditions without falling within an express bar. What follows?
- A qualifying administrative-adjustment path must be considered; approval is still required
- All nonconforming-use expansion is prohibited in every Illinois community
- The existing status supplies a new building permit without review
- The use can expand automatically without approval
Show answer and explanation
Answer: A. A qualifying administrative-adjustment path must be considered; approval is still required
The published Chicago provision authorizes a conditional approval path. Its existence does not grant approval or establish the rules in another jurisdiction.
Common questions
What is a legal nonconforming use?
It is an existing use protected from a later conflicting zoning restriction, usually because it was lawfully established before that restriction applied. Continued protection depends on the governing law and ordinance. Separate the activity from an old building's setback or an undersized lot. Nonconforming does not simply mean illegal.
Does an illegal use become legal nonconforming over time?
Passage of time alone does not legalize a prohibited use. Investigate the rule and required approvals that actually applied rather than infer lawfulness from age, taxes or rent. Particular annexation, official-recognition or equitable issues can require a separate analysis; none makes every long-running violation automatically protected.
Is a nonconforming use the same as a variance?
No. A protected nonconforming use rests on the relevant history and governing law. A variance is affirmative, property-specific relief granted through an application and the required findings. Existing nonconforming status does not itself grant a new variance.
Can a legal nonconforming use be expanded?
Read the applicable rules. They may prohibit particular expansion, require approval or allow specified changes subject to conditions. Chicago, for example, has an administrative-adjustment route for qualifying expansion into another part of the same building, as well as express prohibited categories. Do not promise expansion solely because the original use is protected.
Can a nonconforming use be changed to another use?
The local ordinance controls. Some codes permit a change to a conforming use, a less intensive nonconforming use, or another use within a stated classification after approval. Returning from a conforming use to the old nonconforming use may be prohibited.
What is abandonment of a nonconforming use?
Start with the enacted language and applicable law. A code can define discontinuance through a period of ceased operations or another stated event. An abandonment dispute can also involve the owner's conduct and intent. Temporary vacancy does not give a universal answer, and saying I intend to reopen does not automatically defeat every objective discontinuance rule.
What happens after fire or major damage?
The ordinance may allow restoration below a damage threshold or within a deadline, while requiring conformity or ending the right after major destruction. Insurance treatment, building code, permits, structural reports, demolition, and the cause and extent of damage do not substitute for the zoning rule.
Does nonconforming use status transfer to a buyer?
A valid land-use status is usually associated with the property and lawful use rather than the identity of one owner, but a buyer must verify the ordinance, certificate, permits, continuous history, conditions, and any pending enforcement. A sale does not revive a status already lost.
What proves a legal nonconforming use?
Build evidence of the relevant law, date, activity, location, extent and later history. Permits or occupancy approvals that were required, official determinations, leases, photographs, directories, utility records and testimony can help. A tax record or business license alone does not necessarily establish zoning legality. Chicago expressly puts proof of nonconforming status on the landowner; procedural burdens in a particular lawsuit can differ.
Where are nonconforming uses tested on the Illinois broker exam?
The June 24, 2026 PSI outline places government controls on land use in national II.B. The whole Land Use Controls domain has 5 of 100 scored national broker questions, with no quota for nonconforming use. These practice items are original, not official PSI questions.
Are these official PSI questions or a zoning opinion?
No. This is exam preparation. A real determination requires the current local rule, relevant historical rules, actual use history, approvals or recognition records and any enforcement decision. The published opinions are used for their specific facts and holdings, not as a promise that a buyer can continue or revive a disputed use.
How is a nonconforming structure different from a nonconforming use?
A structure issue concerns a physical standard such as a setback, height or bulk. A use issue concerns the activity itself. A lawfully built house can have a nonconforming setback while its single-family use remains allowed. A small lot or parking deficiency can raise another category; use the local definitions.
How do nonconforming use, variance and special use differ?
A protected nonconforming use depends on the relevant history and law. A variance is specific affirmative relief from a regulation. A special use is a use contemplated by the current ordinance through its approval standards. An old nonconforming use does not automatically supply a new variance or special-use approval.
What is Chicago's discontinuance period?
The published general provision in section 17-15-0304-A uses 18 continuous months. It separately uses six continuous months for a nonconforming adult use or open use of land. Ceased operations or failure to maintain a valid business license counts under that provision. Specified coach houses and other categories have separate provisions, so 18 months is not a rule for every Chicago situation, much less all Illinois.
Does Chicago allow any nonconforming-use expansion?
Yes, for specified qualifying situations and required approval. Section 17-15-0303-A authorizes an administrative adjustment for expansion into another part of the same building when its conditions are met and the express prohibitions do not apply. Other subsections address different categories. An approval path is not automatic approval and should not be copied into another municipality's code.
Does grandfathered zoning status excuse safety violations?
No blanket exemption follows. Chicago's published general provisions require nonconformities to be safe and in good repair and address incidental repairs and ordered restoration. Separate building, fire, health and other applicable requirements still need attention. A maintenance allowance does not by itself authorize a new unit or larger use.
Does a new owner get a fresh discontinuance period?
Do not assume that a sale resets the history. Chicago states that status runs with the land and is unaffected by changes in tenancy, ownership or management. The buyer takes whatever valid status remains, subject to its conditions. An expired or lost right is not automatically recreated by changing the name on the deed.
What did Giannakopolous v. Adams decide about annexation?
In the 2018 published decision, the court addressed an established use brought under a village's zoning jurisdiction for the first time through an as-is annexation. The record supported the village's recognition of that use. The court reversed the neighbor's judgment and entered summary judgment for the defendants. This particular initial-zoning analysis is not a holding that every annexation legalizes every prior violation or that historical evidence can be ignored.
Can an official certificate or assurance matter if the government later changes position?
Yes, but the facts and legal requirements matter. In FLM Enterprises, the 2020 appellate court applied equitable estoppel after specific official confirmations induced substantial justified reliance in a purchase. It reversed and remanded; it did not decide the alternative laches argument or approve every future expansion. Do not assume every informal comment binds the government. Keep the actual file and obtain prompt qualified review.
Can a legal nonconforming use ever be phased out?
The municipal and county enabling statutes describe existing-lawful-use protection together with specified gradual-elimination provisions. The actual ordinance, statutory authority, facts and governing legal limits must be examined. Neither grandfathered means forever under every circumstance nor the government can end any use at will is a reliable exam rule.
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Official sources and scope
Checked October 25, 2026 against the identified Illinois statutory paragraphs, the published Chicago code and the two named published opinions. Chicago periods and approval routes are local examples. The fictional damage threshold is stated for practice only. The case discussions describe particular records and holdings, not a guarantee about another property.
- PSI June 24, 2026 booklet: national II.B government controls on land use
- 65 ILCS 5/11-13-1: existing lawful uses and specified gradual elimination
- 55 ILCS 5/5-12001: county existing-lawful-use protection and limits
- Chicago published code 17-15: proof, maintenance, transfers, expansion and discontinuance
- Giannakopolous v. Adams, 2018 IL App (1st) 162364: the particular annexation record
- FLM Enterprises v. Peoria County Zoning Board, 2020 IL App (3d) 180634: official assurances and reliance
- 65 ILCS 5/11-13-5: separate municipal variation authority
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.