Tazewell County, Illinois
Spring Lake Township is a township in Tazewell County, Illinois. Septic permits inside Spring Lake Township come from Tazewell County (Tazewell County Health Department · 309-925-5511). 16 rules below are quoted from official sources and independently re-checked, most recently on October 30, 2026. Rules for unincorporated land are on the Tazewell County page.
Spring Lake Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
New dwellings and other structures other than commercial and industrial in unincorporated Tazewell County, which covers unincorporated land inside Spring Lake township
“prior to the issuance of a building permit by the tazewell county community development department for construction of all structures other than commercial and industrial”
Unincorporated land inside Spring Lake township, Tazewell County, IL: county zoning districts
“a-1 preservation district a-2 agricultural district r-r rural residential district r-1 low density residential district”
R-1 low density residential district (main single-family district) in unincorporated Tazewell County, including any such land inside Spring Lake township
minimum lot size, single-family served by public water and public sewer: >= 0.5 acre (except as provided by special use permit) · minimum lot size, single-family not served by both public water and sewer: >= 1 acre (unless larger lot sizes are required by the county septic ordinance)
“(c) single-family dwelling not served by both a public water system and public sewer system: one acre, unless larger lot sizes are required by the county’s septic ordinance;”
“except as provided by special use permit, all uses and structures in the a-2 agricultural district shall have a minimum lot size of ten acres.”
A-2 agricultural district in unincorporated Tazewell County, including any such land inside Spring Lake township
principal side setback: >= 30 ft · principal rear setback: >= 50 ft · accessory side setback: >= 15 ft · accessory rear setback: >= 25 ft
“(1) principal structures shall have a rear setback of not less than 50 feet from the property line.”
“(1) principal structures shall have a rear setback of not less than 20 feet from the property line.”
R-1 low density residential district in unincorporated Tazewell County, including any such land inside Spring Lake township
maximum lot coverage by structures: <= 30 percent
“no more than 30% of the area of the lot shall be occupied by structures.”
A-2 agricultural district in unincorporated Tazewell County, including any such land inside Spring Lake township
principal structure maximum height (mean roof height): <= 36 ft · accessory structure maximum height (mean roof height): <= 36 ft
“principal structures not to exceed 36 feet to the mean height of the roof;”
“principal structures not to exceed 36 feet to the mean height of the roof.”
Accessory dwellings in the A-2 agricultural district of unincorporated Tazewell County, including any such land inside Spring Lake township
“the following uses are permitted uses in the a-2 district in accordance with the applicable regulations as set forth in this chapter: (a) accessory dwelling; subject to the requirements of § 157.055.”
“(b) accessory dwellings; (c) agriculture on a lot not less than ten acres; (d) communication facilities;”
Private sewage disposal (septic) for homes in unincorporated Spring Lake township is handled through the Tazewell County Health Department
“copy of septic permit from the tazewell county health department approving sewage disposal facility, when applicable.”
New homes in unincorporated Spring Lake township that need a sewage disposal facility
septic permit processing time: 2 working days (approximately; check with health department)
“copy of septic permit from the tazewell county health department approving sewage disposal facility, when applicable.”
New or existing driveway used for a new dwelling in unincorporated Tazewell County, where the road authority is the township, state or county
“copy of access permit from township, state or county road official responsible for road jurisdiction.”
Building permit fees for new dwellings in unincorporated Tazewell County, including unincorporated land inside Spring Lake township
new 1-2 family dwelling permit fee, 200 sq ft or less: 200 USD (other sizes scale up to $50.00 per 1,000 sq ft over 4,000 sq ft) · new 1-2 family dwelling permit fee, 1,001 to 2,000 sq ft: 450 USD
“dwellings: 1 & 2 family - new, additions, alteration and repairs • 200 square feet or less $200.00”
Building permit submittal process for new dwellings in unincorporated Tazewell County, including unincorporated land inside Spring Lake township
“the following information will be required at the time of submittal of a building permit application.”
We looked and could not find an official answer yet. Silence is not permission; ask Spring Lake Township or Tazewell County directly.
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 Spring Lake Township publishes no rule on the point, not that none exists. Tazewell County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Spring Lake Township means bringing your own water and power. The kit we’d start with:
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.