Illinois real estate exam glossary
Zoning: match the proposed use to the current rules
A building can look suitable for a business that its zoning does not allow. A residential label can allow one housing form but restrict another. Read the map with the ordinance, then test the exact proposal against the use, size and approval requirements. The district name starts the inquiry; it does not finish it.
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The short answer
Zoning is public regulation that divides territory into districts and governs land uses and development characteristics such as density, height, bulk, setbacks and open space. To evaluate a parcel, identify the governing jurisdiction, current district and applicable site-specific rules, then read the proposed use and development standards together. A special use, variation and rezoning are different routes. Current operation, a tax classification or compliance with one numerical limit does not establish complete zoning approval.
Reviewed for October 2026. PSI places government controls on land use at national II.B. The whole Land Use Controls area accounts for five of the 100 scored national broker questions, not a zoning-only allocation. These are original educational questions. The numerical examples supply their measurement rules and limits rather than assigning actual district entitlements to a private parcel.
Build the answer from the parcel, proposal and rule
- Locate the parcel and authority. Establish the municipality or other applicable jurisdiction and use its current official map and ordinance. Check effective amendments, overlays, planned-development ordinances and parcel-specific decisions. A postal city name or nearby parcel's classification is not enough.
- Define the activity. Read the ordinance's use definitions and table before deciding whether the proposal is permitted, needs special approval or is prohibited. Check accessory-use conditions and site-specific approvals. An operating history alone does not prove lawful status.
- Test the development standards separately. Identify counted floor area, lot area, unit density, height, setbacks, coverage, access and other applicable limits. An overlay can add or modify requirements; use its actual conflict provisions rather than automatically choosing whichever number is stricter.
- Choose an authorized route and follow its conditions. Distinguish ordinary compliance, special use, variation, map or text amendment, nonconforming-status verification and appeal. Identify the decision maker, evidence, findings, conditions and applicable review route. Approval and deadline rules differ by jurisdiction and decision.
- Check the separate legal layers. Zoning permission does not itself satisfy construction, safety, licensing or environmental requirements or extinguish a valid private covenant. Keep the proposed purchase or development dependent on approvals that have not yet been obtained.
| Requested result | Relevant route | What remains necessary |
|---|---|---|
| Operate a use already permitted under the supplied rule | Compliance and applicable permits | All other relevant use and development standards |
| Operate a use listed for special approval | Special-use application | The prescribed hearing, evidence, standards and decision |
| Obtain qualified relief from a stated standard | Variation under the applicable authority | Available relief and all required findings; no automatic approval |
| Change the district assigned to land | Map amendment or rezoning | The applicable ordinance-amendment process |
| Change the ordinance's wording or standards | Text amendment | The applicable amendment process and adopted text |
| Continue a formerly lawful use after a zoning change | Nonconforming-use analysis | Lawful origin, relevant history and current continuation rules |
| Challenge a zoning officer's action | The applicable administrative appeal | Correct forum, standing, filing requirements and clock |
The distinctions that matter
| Distinction | How it works | What to notice |
|---|---|---|
| Special use and variation | A special use is contemplated by the ordinance but requires the stated approval. A variation is relief authorized under the applicable variation framework and findings. | Setback relief is a common dimensional example. Do not declare every use variation available or every use variation forbidden throughout Illinois. |
| Variation and rezoning | A variation grants the specific authorized relief while leaving the district in place. Rezoning changes the district classification through an amendment. | A more profitable proposed use does not itself prove hardship, establish variation authority or guarantee a map change. |
| Current use and lawful nonconforming use | Current use is an observed fact. Lawful nonconforming status requires lawful origin followed by a change that makes the use nonconforming, plus compliance with applicable continuation provisions. | An old business license, years of operation or a seller's assurance alone does not establish every relevant zoning fact. |
| Floor area ratio and lot coverage | FAR compares the area counted as floor area with the applicable site-area denominator. Coverage compares the area defined as covered with the lot area. | A multistory building can have a FAR above 1 while covering much less than the entire lot. Counted areas, exclusions and denominators come from the applicable rule. |
| Density and floor area | Unit density limits how many units a site may support under the stated measure. FAR limits counted floor area. | Meeting a floor-area cap does not waive a separate unit cap, height limit, parking requirement or applicable approval. |
| Administrative appeal and judicial review | An appeal to an administrative board and a court challenge to a specified corporate-authority decision are different routes. | Do not combine the municipal provisions' 45-day and 90-day periods into a universal clock for every Illinois zoning decision. |
Work through the facts
FAR and coverage answer different questions
For this exercise, lot area is 10,000 square feet, FAR is capped at 1.5 and coverage at 60%. Coverage means only the supplied building footprint. Each of two floors has 6,000 square feet, all counted for FAR. No area exclusions or special denominator apply.
- The FAR-only ceiling is 10,000 × 1.5 = 15,000 square feet of counted floor area.
- The proposal contains 12,000 square feet, giving FAR 1.2.
- The footprint covers 6,000 ÷ 10,000 = 60% of the lot.
Answer: The proposal meets these two stated limits. That result does not establish compliance with setbacks, height, parking, use rules or other requirements.
A rectangular setback envelope
A rectangular lot is 60 feet wide and 120 feet deep. The exercise supplies side setbacks of 5 and 10 feet, a front setback of 25 feet and a rear setback of 20 feet. No projections, encroachments, irregular boundaries or other constraints enter this geometry.
- The remaining width is 60 - 5 - 10 = 45 feet.
- The remaining depth is 120 - 25 - 20 = 75 feet.
- The rectangular area inside those setback lines is 45 × 75 = 3,375 square feet.
- If a separate 40% footprint-coverage cap also applied to this 7,200-square-foot lot, that ceiling would be 2,880 square feet, smaller than the setback-only envelope.
Answer: The setback-only envelope is 3,375 square feet. It is not automatically an approved footprint or the maximum permitted total floor area.
A density limit does not round up
For this exercise, each dwelling requires at least 2,500 square feet of lot area on an 8,000-square-foot lot. Units are whole units, with no bonus, exemption or alternative calculation.
- The quotient is 8,000 ÷ 2,500 = 3.2.
- Three units require 7,500 square feet.
- Four units require 10,000 square feet, exceeding the available area.
Answer: This one density constraint permits no more than three units. Other applicable constraints can allow fewer or require an approval; 3.2 does not authorize a fourth unit.
The use table points to special approval
In the supplied local ordinance, a particular daycare category is listed as a special use in the parcel's district. The proposed building meets the stated lot dimensions.
- The use requires the route specified by that ordinance.
- Meeting dimensions does not turn special-use approval into permission by right.
- The facts do not establish a need for dimensional relief, and the application must address the special-use standards.
Answer: Investigate and follow the prescribed special-use process. This exercise does not assign the same daycare classification to every Illinois district.
An unusually narrow lot does not grant its own variation
A permitted house cannot fit within both side setbacks of the stated unusually narrow lawful lot. The owner requests limited dimensional relief.
- This is a variation question because relief from a dimension is requested.
- Identify the applicable authority and findings rather than assuming that narrowness alone proves every required element.
- A preferred larger or more profitable design does not by itself establish entitlement.
Answer: Analyze the authorized dimensional-variation route, with no promise that the application will succeed.
An active event business needs a verified record
A warehouse has hosted events for three years. The buyer has found no record establishing that this activity was lawfully allowed, specially approved or protected as nonconforming.
- Operation alone is not proof of permission.
- The missing evidence does not by itself prove that no approval or relevant interpretation exists elsewhere.
- Find the actual use definition, current and historic rules, approvals, permits and relevant occupancy records.
Answer: Describe the event use as unverified on the available facts. Do not promise legality or sustainable approved capacity based on the operating history alone.
Changing the district and changing the text
A petition asks to change one parcel's district from low-density residential to mixed use. A separate petition asks to change the ordinance's definition of an activity wherever that definition applies.
- The first request changes the map classification.
- The second changes the written rule.
- Both need their applicable amendment processes; neither is automatically granted because an applicant prefers the outcome.
Answer: Distinguish a map amendment from a text amendment rather than calling either request an ordinary setback variation.
Two provisions, two decision types
The exercise states that one challenge is an appeal governed by section 11-13-12. Another seeks judicial review of a corporate-authority rezoning decision governed by section 11-13-25.
- Section 12 specifies filing within 45 days of the action complained of, with the identified officer and board and stated grounds.
- Section 25 specifies an action no later than 90 days after the identified corporate-authority decision.
- These are separate stipulated routes. Final board administrative decisions have a distinct review framework under section 13.
Answer: Identify the decision, forum and governing provision before selecting a period. No actual personal filing date or universal statewide clock is determined here.
Mistakes to avoid
- Residential means every residential building is allowed. Read the exact district's definitions, use categories and development rules. Detached houses, multiple units and other housing forms can receive different treatment.
- An overlay always means pick the stricter number. An overlay can add, modify or control particular requirements. Apply its actual scope and conflict provisions along with relevant site-specific ordinances.
- The district name proves approval. A map classification must be read with current text, applicable amendments, overlays, planned-development documents and prior decisions.
- A use was operating, so it must be lawful. Verify lawful origin and actual permission or protected nonconforming status. Avoid both an unsupported legality guarantee and an unsupported declaration of illegality.
- A variance can always authorize a prohibited use. Use-variation authority can be limited or prohibited. Conversely, a blanket statewide claim that every variation is dimensional is also too broad. Read the applicable authority.
- A FAR limit is a footprint limit. FAR counts the specified floor area across floors. Coverage and setbacks can independently constrain the footprint.
- A ratio gives complete buildable capacity. The applicable rule defines counted area and denominator. Other limits and approvals remain, and a fractional density quotient does not automatically round up.
- A permit erases private title restrictions. A public approval addresses its own scope. Evaluate any valid, enforceable covenant separately, including overriding law and exceptions.
- Every zoning challenge has the same deadline. Different administrative and court routes have distinct triggers and requirements. The stated 45-day and 90-day provisions are not interchangeable.
Check your understanding
These are original teaching questions, not recalled or predicted PSI questions. Answer first, then explain why the other choices fail.
1. Which subject is most directly a zoning question?
- Where a proposed use is allowed and which development standards apply
- The lender's note interest rate
- The order of intestate heirs
- The division of a broker's commission
Show answer and explanation
Answer: A. Where a proposed use is allowed and which development standards apply
District use and development standards are zoning subjects. Debt terms, intestate succession and compensation arrangements concern other legal relationships.
2. Which starting record best establishes the meaning of a parcel's current base district?
- An old listing photo alone
- A property-tax class alone
- The current official zoning map read with the ordinance and applicable amendments
- A neighboring owner's recollection
Show answer and explanation
Answer: C. The current official zoning map read with the ordinance and applicable amendments
The map identifies the district and the text supplies its meaning. Amendments and relevant overlays or parcel-specific approvals still matter; current use and tax labels alone do not establish permission.
3. The supplied local table lists a proposed use for special-use approval. Which conclusion follows?
- The use is permitted without the special approval because the building fits
- Follow the prescribed special-use route and standards
- The application is necessarily a map amendment
- A private covenant can grant the public approval
Show answer and explanation
Answer: B. Follow the prescribed special-use route and standards
The stated table identifies the route. Dimensional compliance alone does not eliminate special-use review, and the table's classification does not itself request a new district.
4. An owner seeks limited side-setback relief for a permitted house on a narrow lawful lot. What is most relevant?
- An intestate succession inquiry
- A guarantee of approval based on narrowness alone
- A variation analysis under the applicable authority and required findings
- Automatic rezoning
Show answer and explanation
Answer: C. A variation analysis under the applicable authority and required findings
The requested relief concerns a dimension. Identify available variation authority and all required findings; this fact pattern does not itself establish entitlement or change the district.
5. A petition asks to change the parcel's district classification. What is the request?
- A change to the note's interest rate
- A mortgage release
- Only a correction to a tax classification
- A map amendment or rezoning
Show answer and explanation
Answer: D. A map amendment or rezoning
The requested change is to the zoning map classification. Adoption requires its applicable process; the petition itself does not accomplish the amendment.
6. An old shop is claimed to be a lawful nonconforming use. Which fact is essential to investigate?
- Whether neighbors know the shop's name
- Whether it has operated for exactly one year
- Whether it was lawfully established before the relevant change and satisfies applicable continuation requirements
- Whether the owner prefers the old rules
Show answer and explanation
Answer: C. Whether it was lawfully established before the relevant change and satisfies applicable continuation requirements
Lawful origin and the relevant history matter. Operation, preference or local familiarity alone does not prove protected nonconforming status or an unlimited expansion right.
7. A stipulated lot-area denominator is 12,000 square feet and maximum FAR is 2.0, with no exclusions or bonuses. What ceiling follows from that FAR constraint alone?
- 36,000 square feet of counted floor area
- An unconditional permit for a 24,000-square-foot building
- 6,000 square feet of footprint
- 24,000 square feet of counted floor area
Show answer and explanation
Answer: D. 24,000 square feet of counted floor area
12,000 × 2.0 = 24,000 square feet of counted floor area. That is the single FAR ceiling, not a footprint or complete approval under every other constraint.
8. Two floors each contain 4,000 square feet, all counted for FAR, on an 8,000-square-foot lot. The exercise defines coverage as the 4,000-square-foot footprint divided by lot area. Which pair is correct?
- FAR 2.0 and coverage 50%
- FAR 1.0 and coverage 100%
- FAR 1.0 and coverage 50%
- FAR 0.5 and coverage 100%
Show answer and explanation
Answer: C. FAR 1.0 and coverage 50%
Counted floor area is 8,000 square feet, so FAR is 8,000/8,000 = 1.0. Coverage is 4,000/8,000 = 50%. The two measurements count different areas.
9. A stipulated 9,000-square-foot lot requires at least 2,000 square feet per whole dwelling unit, with no exception or bonus. What is the maximum under that constraint alone?
- Four units
- Nine units
- Automatic approval for four units under every other rule
- Five units after rounding 4.5 up
Show answer and explanation
Answer: A. Four units
9,000/2,000 = 4.5, but five units require 10,000 square feet. The whole-unit maximum under this constraint is four; that does not waive other limits or approvals.
10. The facts stipulate an appeal governed by municipal section 11-13-12. Which filing period does that provision state?
- No time limit
- Three years after purchase
- 90 days after every zoning event
- 45 days of the action complained of
Show answer and explanation
Answer: D. 45 days of the action complained of
Section 12 identifies a 45-day board-appeal filing period, the officer and board recipients and grounds. It does not provide an unlimited or universal court-review clock.
11. The facts stipulate judicial review governed by section 11-13-25 of a corporate-authority rezoning decision. Which period does it state?
- A mandatory filing with the mortgage lender
- 45 days after the buyer learns about it
- An unlimited period for any dissatisfied applicant
- No later than 90 days after the decision
Show answer and explanation
Answer: D. No later than 90 days after the decision
Section 25 addresses the specified corporate-authority decisions and states no later than 90 days after the decision. It is not the same route as a section 12 board appeal or a universal rule for every different challenge.
12. Zoning approval has been obtained, but a relevant private covenant is asserted. What is correct?
- The permit automatically removes every private restriction
- Only the more restrictive sentence matters, regardless of legality
- Every recorded covenant is automatically valid
- Evaluate the covenant's validity and enforceability separately, including applicable overriding law
Show answer and explanation
Answer: D. Evaluate the covenant's validity and enforceability separately, including applicable overriding law
Public permission does not itself adjudicate every private restriction. Both scope and enforceability matter; neither automatic cancellation nor the strictest-text shortcut is reliable.
13. Which statement about Illinois variations is accurate?
- Their availability, deciding authority and standards depend on the applicable statutory and local framework
- They are universally limited to dimensions in every Illinois jurisdiction
- An applicant's preferred profit guarantees relief
- They can always permit any prohibited use
Show answer and explanation
Answer: A. Their availability, deciding authority and standards depend on the applicable statutory and local framework
Section 11-13-5 has a stated municipal population scope and permits restrictions on use variations; Chicago has its own authorized-variation provisions. Identify the governing authority instead of assuming either universal availability or universal prohibition.
14. Use a rectangular 60-by-120-foot lot. The stated setbacks leave a 45-by-75-foot envelope. Coverage is separately capped at 40% of the lot and counts only the footprint. Ignore other constraints. What is the most restrictive of these two area ceilings?
- 2,880 square feet, while a conforming placement still must fit inside the setbacks
- 3,375 square feet, because setback area always overrides coverage
- 15,000 square feet of guaranteed footprint
- 7,200 square feet because that is the lot area
Show answer and explanation
Answer: A. 2,880 square feet, while a conforming placement still must fit inside the setbacks
Lot area is 60 × 120 = 7,200 square feet. The coverage ceiling is 7,200 × 0.40 = 2,880 square feet, below the 45 × 75 = 3,375-square-foot envelope. A permissible footprint must satisfy both its placement and area limits; this comparison is not a permit, total-floor-area calculation or approval under unexamined rules.
Common questions
What is zoning in plain English?
Zoning sets public rules for what may be done on land and how development may be arranged. Districts can regulate uses, density, height, bulk, setbacks and open space. Read the local definitions and current standards; a familiar district name can mean different things in different jurisdictions.
How do I check a property's zoning?
Identify the governing jurisdiction and parcel, consult the current official map and ordinance, and check effective amendments, overlays, planned-development documents and parcel-specific approvals. Match the proposed activity to its defined use and relevant standards. Verify unresolved interpretation and history through the responsible public office and appropriate professional advice. A tax label, listing or operating business alone is not conclusive.
Does a permitted use need no other approval?
A permitted use remains subject to its applicable standards and other required approvals. A use can fit its district while failing a setback, height, parking, construction, safety or other requirement. In a question, follow the supplied table legend and conditions rather than assuming all local codes use the same labels or procedures.
What is the difference between special use, variation and rezoning?
A special use follows the ordinance's designated approval path for that use. A variation supplies authorized relief under its applicable standards and findings. Rezoning changes a district classification through an amendment. Some projects require more than one approval, and none is guaranteed merely because an applicant asks for it.
Are use variances allowed in Illinois?
There is no reliable statewide yes-or-no shortcut for every jurisdiction and use. Municipal section 11-13-5, for municipalities below its stated 500,000 population threshold, addresses variation authority and allows corporate authorities to prohibit use variations in whole or part. Section 11-13-4 and local provisions supply other relevant frameworks. Chicago's published authorized-variation list has its own scope. Setback relief is a useful dimensional example, not proof that every variation everywhere is dimensional.
What does floor area ratio mean?
FAR is the counted floor area divided by the applicable land-area denominator. Rearranged, a supplied FAR ceiling times its supplied denominator gives a floor-area ceiling under that constraint. The rule determines inclusions and exclusions. Chicago's section 17-17-0305, for example, has specific floor-area inclusions and exclusions and a distinct net-site-area denominator for the described planned and townhouse developments. Do not assume every basement, parking area or parcel aggregation is counted the same way everywhere.
How are FAR, coverage and density different?
FAR compares counted floor area with the applicable site area. Coverage concerns the area defined as covered relative to the lot. Density concerns the number of units or another stated intensity measure. A multistory building can have a modest footprint and substantial counted floor area. Each applicable limit must be tested separately; a numerical result does not itself establish final development rights. Even when one area ceiling is smaller, the building must still fit the required placement and shape rather than treating an area total as permission to cross a setback.
Does a lawful nonconforming use last forever?
Its lawful origin is the starting point, followed by the applicable continuation, change, discontinuance, damage and restoration rules. A use and a nonconforming building or development characteristic can raise different questions. Chicago's published code addresses these categories separately. Avoid a universal abandonment period or an assumption that every old illegal use has become protected.
Can an overlay or planned development change the base-district answer?
Yes, an applicable overlay or site-specific planned-development ordinance can add or modify requirements. Read the operative text, conditions, plans and conflict provisions. Automatically selecting the stricter-looking number can miss a provision that specifically modifies a base rule or applies to only part of a proposal.
Are the Illinois zoning appeal periods always 45 or 90 days?
No. Section 11-13-12 states 45 days of the action complained of for its described appeal to the municipal board, with specified filing recipients and grounds. Section 11-13-25 states no later than 90 days after the decision for judicial review of the specified corporate-authority decisions, whether home rule or non-home rule. Section 11-13-13 separately directs review of final board administrative decisions to the Administrative Review Law. The actual decision, legal route and applicable rules control; this summary does not calculate a personal deadline.
Does filing the described board appeal always stop enforcement?
Section 11-13-12 generally stays proceedings in furtherance of the appealed action but contains an exception when the officer makes the specified imminent-peril certification. It then addresses a restraining-order route with its stated conditions. Do not convert the general stay into permission to ignore a safety order or assume every other appeal has the same effect.
Where is zoning on the Illinois broker exam outline?
The June 24, 2026 PSI booklet places government controls on land use at national II.B, with private controls at II.C. Land Use Controls has five of the 100 scored national broker questions as a whole. There is no separate published zoning or FAR question quota. These exercises are original practice questions, not released PSI items or a validated readiness test.
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Official sources and scope
Illinois statutes set the identified municipal frameworks, while the Chicago provisions illustrate their own local subjects. The measurement page displayed the publisher's 2026 S-74 compilation. Hypothetical limits here are supplied exercise facts, not a parcel's actual zoning. Different decisions have different approval and review routes. Verify the current official text, map, site-specific decisions and applicable rules before relying on a real project or deadline.
- 65 ILCS 5/11-13-1: municipal zoning powers, including use and building controls
- 55 ILCS 5/5-12001: county zoning authority and territorial limits
- 65 ILCS 5/11-13-4 and 5: distinct variation frameworks
- 65 ILCS 5/11-13-1.1: municipal special-use classification, evidence and conditions
- 65 ILCS 5/11-13-11: findings, plans and the specific terms of relief
- 65 ILCS 5/11-13-14: ordinance and district amendments
- 65 ILCS 5/11-13-12: municipal board appeal and conditional stay
- 65 ILCS 5/11-13-25: specified corporate-authority decisions and due process
- Chicago 17-17-0300: lot area, density, FAR and setback measurement examples
- Chicago published code 17-13-1100: authorized variations and criteria
- Chicago published code 17-15: lawful history, continuity and nonconforming uses
- Chicago published code 17-15-0400: nonconforming developments
- Chicago published code 17-1-1000: public rules and private agreements
- Chicago 14A-4-413.1: scope of permit
- PSI June 24, 2026 booklet: National II.B and related private controls
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.