Lake Barrington, IL Zoning, Building Permits & Septic Rules

The Village of Lake Barrington, Illinois zones its own land and has adopted its own building code, so the Lake County planning counter does not decide those questions inside village limits¹². Septic permits and new wells are handled by the Lake County Health Department, not the village³⁴. Call village hall to confirm the building permit steps for a new home.

At a glance

Zoning: Village Title 8 zoning ordinance applies, not county zoning¹
Building code: Village has adopted a building code, electrical code and plumbing code²
Minimum lot, R-1: 40,000 sq ft and 130 ft wide at the front building line⁵
Minimum lot, R-5: 200,000 sq ft and 300 ft wide at the front building line⁶
Maximum height: 35 ft or two and one-half stories above a basement, whichever is lower (R-1, R-2, R-5)⁷⁸⁹
Septic: Lake County Health Department permits systems where public sewer does not exist³
Wells: Lake County Water Well Program permits new wells, city or not⁴

Who to call

Building permits

Village of Lake Barrington (village hall)

Village building services and zoning: residential building permits, inspections scheduling, and zoning questions inside village limits

847-381-6010

lakebarrington@lakebarrington.org

23860 N. Old Barrington Rd. Lake Barrington, IL 60010

Septic permits

Lake County Health Department — Onsite Wastewater Treatment System

Septic system review, approval and construction inspections for properties without public sewer service in Lake County

847-377-8020

healthehs@lakecountyil.gov

500 West Winchester Road, Libertyville, IL 60048

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Off-grid gear

Going off-grid in Village of Lake Barrington means bringing your own water and power. The kit we’d start with:

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Does Lake Barrington, Illinois have zoning, and what does it mean for lot size and setbacks?

Yes. Land inside Lake Barrington village limits falls under the village's own Title 8 zoning ordinance, which applies in place of county zoning¹. The village code lists seven districts: R-5, R-2 and R-1 single-family residential, plus business, office and research, manufacturing and industrial, and conservation districts¹⁰. We did not find the village zoning map, so check which district a parcel sits in before you buy.

Minimum lot sizes depend on the district. In R-1, every lot needs at least 40,000 square feet and 130 feet of width at the front building line⁵. In R-2, the minimums are 80,000 square feet and 190 feet¹¹. In R-5, the large-lot district, they are 200,000 square feet and 300 feet⁶.

Buildings in R-1, R-2 and R-5 may not exceed 35 feet or two and one-half stories above a basement story, whichever is lower⁷⁸⁹.

What are the setback and minimum house size rules in Lake Barrington?

Setbacks in the two smaller residential districts are measured against lot width¹²¹³. The front yard is at least 30 feet from the nearest right-of-way boundary¹². Each of the two side yards must be at least 10 percent of the average lot width, and a side yard along a street must be at least 30 feet wide¹³. In R-1, the rear yard must be at least 10 percent of the average lot width¹². We could not confirm setbacks for the large-lot district¹⁰.

The two smaller residential districts also set a minimum dwelling size¹⁴¹⁵. A one-story house needs at least 1,600 square feet of ground floor area¹⁴. A house with more than one story needs at least 1,200 square feet on the ground floor and at least 2,000 square feet in total¹⁵. That rules out most tiny homes in those districts. We could not confirm a tiny-home, RV or manufactured-home rule, so ask village hall before planning one.

Do you need a building permit in Lake Barrington, and who issues it?

The village issues its own building permits. The Village of Lake Barrington has adopted a building code, an electrical code and a plumbing code for construction inside village limits². The village website lists residential building permits, new single-family home construction requirements, and scheduling inspections among its pages¹⁶. We could not read the village's permit chapter, so we could not confirm exactly which projects need a permit, the fees, or whether the village requires a certificate of occupancy. Ask village hall.

Lake County Planning, Building and Development issues building permits only for unincorporated Lake County, so sending a village address there is the wrong call¹⁷. Illinois does not issue building permits for private construction; any permit comes from the local government¹⁸.

How do septic permits work inside Lake Barrington?

Septic permits come through the Lake County Health Department. Its permit process covers building an onsite wastewater system in incorporated or unincorporated Lake County where public sewers do not exist³. A licensed soil classifier completes a soil evaluation, a licensed designer or engineer designs the system, and a licensed septic contractor applies for the construction permit³. Health department staff inspect the system, and no portion may be backfilled until it is inspected and approved¹⁹.

The village code also contains a title on individual sewage disposal systems, and we could not read it, so we could not confirm whether the village adds its own septic permit or bond. Ask both²⁰ and¹⁶. Soils matter here: the share of Lake County soils rated not limited for a conventional drain field is²¹ percent, so expect a site evaluation and possibly an engineered system.

How do you build a home in Lake Barrington? The steps, in order

Confirm the district with village hall, since lot size, setbacks and minimum house size all depend on it¹⁶.
Ask village hall which building permits and inspections the project needs. The village lists new single-family home construction requirements on its site¹⁶.
Find out whether the lot has public sewer. If it does not, start the septic soil evaluation and design with the Lake County Health Department³.
Permit any new well through the Lake County Water Well Program, which covers incorporated and unincorporated Lake County⁴.
Ask village hall about floodplain or stormwater review; we could not confirm village rules, and the county's watershed permitting is a separate program²².
Schedule inspections through the village as the work proceeds¹⁶.

What stays with Lake County, and what should you check before you buy?

The county's zoning and building rules apply only to unincorporated Lake County; municipalities regulate land within their boundaries²³. For land outside the village, use the Lake County page.

Still with the county: septic permits and inspections, and new well permits³⁴. Illinois also requires a state permit for work in the right-of-way of a state route, which matters if a driveway meets a state highway²⁴.

Costs are county-level figures. Lake County's effective property tax rate is²⁵ percent, with a median bill of²⁶ dollars a year²⁶. Ask the village about water and sewer availability before you buy, because we could not confirm connection rules.

Watch-outs

The village code is marked as having ordinances pending review for codification, so confirm any zoning figure with village hall before relying on it¹.
We could not confirm village rules on RVs, tiny homes, manufactured homes, accessory dwellings, short-term rentals, driveways or lot coverage; ask village hall¹⁶.
Only the R-1, R-2, R-5 and conservation district rules were reviewed, so a lot in a business, office or manufacturing district needs a separate answer from the village¹⁰.
Septic systems and wells inside village limits go through the Lake County Health Department, with an unconfirmed possible village layer on top²⁰.

Sources

Written October 24, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Unanswered questions are usually a sign that Village of Lake Barrington publishes no rule on the point, not that none exists. Lake County’s page lists the county offices to call.

Zoning, building permits and septic rules in Lake Barrington, Illinois