Zoning, building permits and septic rules in Lexington, Illinois
Lexington is a city in McLean County, Illinois. Lexington adopts its own zoning, so inside its limits Lexington’s rules apply, not the county’s. 3 rules below are quoted from official sources and independently re-checked, most recently on October 22, 2026. Rules for unincorporated land are on the McLean County page.
Answers from the rulebook for Lexington
Lexington’s own rules
Local zoningPresent (with conditions)
Land inside Lexington city limits (City of Lexington, IL), per the city's own code of ordinances
The eCode360 table of contents lists Part II chapter 300 'zoning', sections § 300-1 through § 300-66; the zoning chapter text itself was not opened in this run, so district limits and use rules are unverified.
Zoning applies only to land inside the city limits; unincorporated McLean County land is not covered by this claim.
“chapter 300 zoning (§ 300-1 – § 300-66)”
Subdividing landRegulated (with conditions)
Division of land inside Lexington city limits
Established only from the eCode360 table of contents listing Chapter 195 'subdivision of land' (§ 195-1 through § 195-76); the chapter text was not opened, so plat, approval and fee steps are unverified.
The city also lists a preliminary plat application on its permit page, which supports the existence of a platting process.
“chapter 195 subdivision of land (§ 195-1 – § 195-76)”
Permit processPartial
Building, demolition and preliminary plat permit applications for land inside Lexington city limits
The page lists downloadable forms (building permit, demolition permit, preliminary plat, building permit handbook) and says to send them to [email protected] or drop them off at city hall.
The same page links to an online submission portal ('submit a permit (iworq)') that was not opened.
The page does not state review steps, timelines, fees or inspection requirements, so the process is only partly published.
“fill out the pdfs below (digitally or print) and send to [email protected] or drop off at city hall.”
Still unanswered
We looked and could not find an official answer yet. Silence is not permission; ask Lexington or McLean County directly.
Building permit — New construction inside Lexington city limits
Owner-builder exemption — Owner-builder permit exemption inside Lexington city limits
Building code adopted — Building code adopted for construction inside Lexington city limits
Inspections — Construction inspections inside Lexington city limits
Certificate of occupancy — Occupancy certificates for buildings inside Lexington city limits
22 more unanswered
Zoning districts
Minimum dwelling size
Minimum lot size
Setbacks
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Manufactured homes
Accessory dwellings
Who permits septic
Septic permit
Septic inspection
Off-grid sanitation
Well permit
Mandatory utility hookup
Agricultural exemption
Driveway access
Building in a floodplain
Short-term rentals
Permit fees
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Lexington publishes no rule on the point, not that none exists. McLean County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Lexington means bringing your own water and power. The kit we’d start with:
