Off-Grid Living in Lee County, Illinois

The Lay of the Land

I've spent months researching off-grid regulations in Lee County, and here's what I've learned: the county has a workable framework for off-grid living on agricultural land in unincorporated areas, but it's thin. The critical decisions - septic, water, dwelling type - are gated by county permitting and health department sign-off. Everything else is either left to state law or handed to whichever municipality your property sits in. That split responsibility means you need to do two reconnaissance passes before you buy or build: first, confirm your property is in unincorporated Lee County on agricultural zoning. Second, if you're in a city, village, or town, call that municipality's zoning office and ask about tiny homes, RVs, greywater, and utility requirements.

Zoning: Permitted in Agricultural Districts

Lee County adopted zoning in 1961 and designates an AG-1 Rural/Agricultural District in unincorporated areas. That's good news for off-grid living: agricultural zones are typically the most permissive in Illinois, and state law in Illinois exempts certain agricultural uses from local zoning requirements. What does that mean in practice? If your property is in the AG-1 district, residential uses and agricultural structures are likely permitted - but "certain uses" is vague and depends on what you're building and how you're living.

What to do: Before you purchase or plan construction, contact the Lee County Building and Zoning Office and ask directly: - Is my property in the AG-1 Rural/Agricultural District in unincorporated Lee County? - If yes, are residential structures and agricultural buildings permitted in that zone? - What does state law exempt from local zoning on my property?

Do not assume your parcel is unincorporated. Lee County has several incorporated municipalities - including Dixon, the county seat - and if your land falls inside a city or village boundary, that municipality's zoning rules apply instead. Check the Lee County website or GIS mapping tool to confirm your property's jurisdiction before making any calls. If you're in a municipality, contact that zoning office, not the county office.

Dwelling: Varies by Jurisdiction

The county ordinances I reviewed do not specify rules for tiny homes, RVs, or alternative dwelling types. Illinois itself has no statewide tiny-house standard and has not adopted Appendix Q of the International Residential Code (which permits small homes on foundations). That silence creates uncertainty for anyone considering a tiny home or RV on Lee County land.

Here's what you need to know: If your property is in unincorporated Lee County on AG-1 zoning, a conventional single-family dwelling is permitted. But if you want to live in an RV, trailer, or tiny home - especially full-time - you must check both state law and your municipality's specific ordinance. Some municipalities in Illinois explicitly permit full-time RV living; others do not. The county's Building and Zoning Office can tell you whether unincorporated AG-1 land allows RV residency, but municipalities set their own rules.

What to do: - If in unincorporated Lee County: call the Building and Zoning Office and ask directly whether RVs or tiny homes (on or off wheels) are permitted for permanent residence. - If in a municipality: call that municipality's planning or zoning office with the same question. - Ask whether there are minimum square-footage or foundation requirements for primary dwellings.

Building Permits: Required

A building permit is required from the Lee County Building and Zoning Office for any construction in unincorporated areas. The county follows the Illinois state building code baseline, which includes the State Plumbing Code, Accessibility Code, and Energy Conservation Code. Permits and inspections happen through the county office.

The practical sequence: You submit plans, the office checks them against the county and state code, the county's Health Department issues or denies approval for septic and water (see below), and only then does the Building and Zoning Office issue your permit. Inspections occur at foundation, framing, and final stages. This is where the real gatekeeping happens in Lee County.

What to do: - Obtain a building permit application from the Lee County Building and Zoning Office. - Prepare site and structural plans to state building code standards. If you're unsure, hire a designer or engineer familiar with Illinois code. - Submit applications simultaneously for septic/well preliminary approval (to Health Department) and building permit (to Building and Zoning Office). Do not wait for one to finish before starting the other; in practice, the offices coordinate. - Budget 4-8 weeks for approvals; some projects take longer if revisions are needed.

Septic Systems: Restricted - Health Department Approval Required

This is the first major gate: private sewage disposal systems require preliminary approval from the Lee County Health Department (Environmental Health Division) before the Building and Zoning Office will issue a building permit.

I cannot overstate this. Do not design or install a septic system without prior written approval. The county health department reviews the system design, site conditions (soil type, slope, groundwater depth, proximity to wells and surface water), and ensures compliance with the Illinois Department of Public Health's standards for on-site wastewater treatment.

At the state level, Illinois permits a range of alternative systems beyond traditional septic tanks: constructed wetlands, sand filters, aerobic systems, and composting toilets are all recognized. But Lee County health officials will evaluate your specific site. A composting toilet, for example, might be approved on some properties and rejected on others depending on soil conditions and groundwater proximity.

What to do: - Contact the Lee County Health Department, Environmental Health Division, at (815) 284-3371 or 309 S. Galena Ave., Dixon, IL. - Ask for the septic system pre-approval or design review process. They may require a site evaluation or soil testing. - If you're considering a composting toilet or other alternative, ask explicitly whether it's permitted on your property. - Submit your proposed system design (type, location, size, drainfield layout) to the health department *before* you finalize your building permit application. - Do not break ground on any system until you have written preliminary approval from the health department *and* your building permit from the county office.

Private Water Wells: Restricted - Health Department Approval Required

The second major gate: private water well systems require preliminary approval from the Lee County Health Department before a building permit is issued. This applies to all off-grid water supplies in unincorporated areas.

At the state level, Illinois allows private wells and governs them through the Illinois Water Well Construction Code. The state and delegated local health departments issue permits and ensure that contractors are licensed by the Illinois Department of Public Health. But in Lee County, the Health Department acts as the gatekeeper: no Health Department approval, no building permit.

This approval process involves confirming that: - Your proposed well location does not create a cross-contamination risk with the septic drainfield (minimum separation distances apply). - Groundwater quality and yield are adequate. - The well complies with the Illinois Water Well Construction Code.

What to do: - Contact the Lee County Health Department, Environmental Health Division, at (815) 284-3371 or 309 S. Galena Ave., Dixon, IL. - Request the well permit or pre-approval process. - Provide your property location and proposed well location (distance from septic drainfield, buildings, property lines, and any surface water). - The health department may require a well contractor's report (many contractors conduct test drilling and provide a preliminary assessment). - Submit your well design and location to the health department *simultaneously* with your septic design. The two systems must not interfere with each other. - Obtain written preliminary approval from the health department before applying for or finalizing your building permit.

Greywater: Unclear - Confirm Locally

Illinois has no explicit statewide greywater reuse policy, and greywater is not clearly authorized in state statute. That legal ambiguity means Lee County and its municipalities have discretion to permit or restrict it. I found no county-level ordinance explicitly addressing greywater, which is a gap that creates uncertainty.

What I mean in practice: If you want to recycle greywater from showers and sinks to irrigate a garden or flush toilets, you need to know whether Lee County and your municipality allow it. Some jurisdictions allow it with no permit; others require a permit and inspection; still others prohibit it outright.

What to do: - Contact the Lee County Health Department at (815) 284-3371 and ask: "Are there any county rules or restrictions on greywater reuse from a residential dwelling?" - If your property is in a municipality, call that municipality's planning or health department with the same question. - Ask whether a greywater system would require a permit, inspection, or approval before installation. - Do not install a greywater system without written confirmation that it complies with local rules. Installing a system that violates local ordinance could result in a cease-and-desist order or a requirement to remove it.

Rainwater Harvesting: Permitted Under State Law - Confirm Municipal Rules

Illinois explicitly permits rainwater harvesting for non-potable uses (garden irrigation, toilet flushing, lawn sprinklers) under the Rainwater Capture Act of 2012. That's a green light at the state level. But municipalities can restrict it, so you must confirm your locality's position.

At the state level, any rainwater system must be built to Illinois Plumbing Code standards and, if storage exceeds 5,000 gallons, the plan requires approval. A licensed plumber must install it. For most residential off-grid scenarios - collecting roof runoff into a 500- or 1,000-gallon tank for garden and toilet use - you'd stay well under the 5,000-gallon threshold and avoid the large-system approval requirement.

What to do: - If in unincorporated Lee County, contact the Lee County Building and Zoning Office and ask: "Are there any county rules on rainwater harvesting for non-potable uses?" - If in a municipality, contact that municipality's zoning or planning office with the same question. - Ask whether you need a permit for a typical residential rainwater tank (under 5,000 gallons). - Confirm that the system complies with Illinois Plumbing Code (a licensed plumber can verify this). - For larger systems (over 5,000 gallons), expect to submit plans for approval, but this is rare for residential off-grid use.

Utility Disconnection: Unclear - Confirm With Your Municipality

Illinois allows off-grid power (solar, wind) statewide. But some municipalities require connection to municipal water or sewer *if those systems run near your property*, which can effectively block full off-grid living in those areas. I found no county-level mandate requiring utility connection, but municipalities set their own rules.

What to do: - If in unincorporated Lee County, contact the Lee County Building and Zoning Office and ask: "Are there any county rules requiring connection to municipal water, sewer, or power if those systems are available?" - If in a municipality, contact that municipality's planning office with the same question. - Confirm in writing whether you are *required* to connect to any utility system if you live off-grid. - If a municipality does require connection, you may have recourse to apply for a variance or exemption; ask what the process is.

Getting Started: A Checklist

1. Confirm your property's jurisdiction. Is it in unincorporated Lee County or inside a city, village, or town? 2. Confirm your property's zoning. If in unincorporated Lee County, is it AG-1? If in a municipality, what zone is it? 3. Call the appropriate zoning office. Ask whether residential off-grid structures are permitted. 4. Call the Lee County Health Department. Ask about septic and well pre-approval processes and timelines. 5. Ask about alternative systems. If you're considering a composting toilet, alternative septic, or rainwater harvesting, ask about permitting *before* you plan. 6. Ask about RVs and tiny homes. If applicable, confirm whether those dwelling types are permitted. 7. Hire professionals as needed. A site engineer or well contractor can help with Health Department pre-approval applications. 8. Budget time. Expect 4-8 weeks for Health Department and building permit reviews, longer if revisions are needed.

The Verdict

Lee County's county-level framework for off-grid living is lean but functional. The Health Department approval requirement for septic and wells is the main gate; everything else either defers to state law or lands on your specific municipality. Before you buy or plan, identify whether your land is in unincorporated Lee County or inside a city or village, then call both the county Building and Zoning Office and your municipality's zoning office if applicable. Start with health and zoning questions, not architectural drawings. That early confirmation will save you time and money.