Bloomington, IL Zoning, Building Permits & Septic Rules

The City of Bloomington, Illinois adopts and applies its own zoning code, Chapter 44, inside city limits; McLean County's zoning does not govern city land¹. In the main single-family district, R-1B, a lot needs at least 7,000 square feet². We could not confirm who issues building permits or septic permits inside the city, so ask the city and the McLean County Health Department before you buy.

At a glance

Zoning: City of Bloomington's own zoning code (Chapter 44)¹
Zoning districts: Residential districts R-1, R-2, R-3, R-4 and R-D have published tables³
R-1B minimum lot: 7,000 sq ft, 70 ft wide²
R-1A minimum lot: 22,500 sq ft, 125 ft wide⁴
R-1B setbacks: 30 ft front, 6 ft side, 30 ft rear⁵
Building height: 35 ft or 2.5 stories in R-1A and R-1B⁶⁷
Septic: McLean County Health Department runs the county program; city-limit authority unconfirmed⁸

Who to call

Zoning

City of Bloomington Zoning Code (Chapter 44)

Zoning districts and standards inside Bloomington city limits

Septic permits

McLean County Health Department — Environmental Health Division

Private sewage disposal plan review, permits and inspections for homes not on public sewer in McLean County

(309) 888-5482

200 W Front Street Bloomington , IL 61701

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 Bloomington means bringing your own water and power. The kit we’d start with:

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

Yes. Bloomington's zoning code is the City of Bloomington's own Chapter 44, and it applies inside city limits¹⁹. Published district tables cover the R-1, R-2, R-3, R-4 and R-D residential districts³.

Standards differ by district. In R-1B, the main single-family district, the minimum buildable lot is 7,000 square feet and 70 feet wide, with 30-foot front, 6-foot side and 30-foot rear yards²⁵. In the large-lot R-1A district, the minimum is 22,500 square feet and 125 feet wide, with 40-foot front, 16-foot side and 40-foot rear yards⁴¹⁰. Both districts cap principal buildings at 35 feet and 2.5 stories⁶⁷.

Garages, accessory dwelling units and other accessory buildings may not sit between the front facade of the house and the front lot line¹¹. We could not confirm whether accessory dwellings are allowed in each district, so ask the city's zoning staff.

Can you live in an RV or tiny home in Bloomington, Illinois?

We could not confirm Bloomington's rules on living in an RV, camping on a lot, or occupying a tiny home inside city limits. Those rules sit in the city zoning use table and building code, so ask the City of Bloomington's zoning staff before you buy a lot for either plan. Statewide rules about campgrounds do not answer whether you can live in an RV on your own lot¹².

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

We could not confirm the City of Bloomington's building permit process from its code, so contact the city's building safety office before you start. Illinois does not issue building permits for privately funded construction itself; local governments do¹³. Do not use McLean County's building permit rules as Bloomington's: the county's permit requirement covers unincorporated McLean County¹⁴.

How do septic permits work inside Bloomington?

Most homes inside Bloomington connect to public sewer, and we could not confirm the city's sewer-connection rules. The McLean County Health Department runs the county's Private Sewage Disposal Program for homes not served by public sewer, including approving plans and issuing private sewage disposal permits⁸¹⁵. We could not confirm whether the county or the city handles a septic system on a lot inside city limits, so call the Environmental Health Division at (309) 888-5482¹⁵. Illinois requires plan approval for any new private sewage disposal system¹⁶.

Building a home in Bloomington: the steps, in order

Confirm the lot's zoning district and check lot width, lot area and yards against the Chapter 44 tables³.
Ask the City of Bloomington which office issues building permits and what plans it requires; we could not confirm this.
Confirm public water and sewer, or call the McLean County Health Department about a private system¹⁵.
Check for flood-hazard limits; a state floodplain permit is required for work in regulated floodways¹⁷.
If you will use a driveway onto a state highway, a state right-of-way permit is required¹⁸.

What stays with McLean County, and what to check before you buy?

Land outside Bloomington city limits falls under McLean County, which requires building permits for most construction in unincorporated areas and runs its own zoning there¹⁴¹⁹. See the McLean County page for those rules. Confirm whether a parcel is inside the city before you rely on either set. McLean County's effective property tax rate is 2.3% and its median property tax bill is $4,503 a year²⁰²¹.

Watch-outs

We could not confirm Bloomington's building permit, inspection, fee, RV or tiny-home rules; ask the City of Bloomington before you commit to a lot, because Illinois leaves building permits to local governments¹³.
Bloomington's published zoning review covered the R-1A and R-1B tables only; other districts have their own standards³.
The McLean County Health Department's septic authority inside city limits is unconfirmed; call (309) 888-5482 before assuming either way¹⁵.

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 Bloomington publishes no rule on the point, not that none exists. McLean County’s page lists the county offices to call.

Zoning, building permits and septic rules in Bloomington, Illinois