Zoning, building permits and septic rules in Village of Downers Grove, Illinois

Village of Downers Grove’s own rules

• Local zoningPresent

  Land inside Downers Grove village limits

  • Zoning map amended under Section 28.12.030 of the Downers Grove Municipal Code (Chapter 28)

  “an ordinance has been prepared to amend the zoning ordinance map to rezone the property at 4910 cross street from r-1, residential detached house 1, to r-4, residential detached house 4.”

• Zoning districtsPartial

  Zoning districts inside Downers Grove village

  • Only R-1 and R-4 confirmed; full district list not opened

  “an ordinance has been prepared to amend the zoning ordinance map to rezone the property at 4910 cross street from r-1, residential detached house 1, to r-4, residential detached house 4.”

• Minimum lot sizeSpecified

  R-1 and R-4 residential detached house districts inside Downers Grove village

  • Figures from a 2017 council report; current code may differ

  R-1 minimum lot area: >= 20000 sq ft · R-4 minimum lot area: >= 7500 sq ft · R-1 minimum lot width: >= 100 ft · R-4 minimum lot width: >= 50 ft

  “minimum lot area 20,000 sq. ft. 7,500 sq. ft. 6,250 sq. ft. minimum lot width 100 ft. 50 ft. 50 ft.”

• SetbacksDistrict specific (with conditions)

  R-1 and R-4 residential detached house districts inside Downers Grove village

  • Figures from a 2017 council report; current code may differ

  R-1 street setback: >= 40 ft · R-4 street setback: >= 25 ft · R-1 side setback: >= 7 ft · R-4 side setback: >= 5 ft · R-1 and R-4 rear setback: >= 20 ft

  “street setback 40 feet 25 feet side setback 7 feet 5 feet rear setback 20 feet 20 feet”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Village of Downers Grove or DuPage County directly.

• Building permit — Building permits inside Downers Grove village
• Owner-builder exemption — Owner-builder exemptions inside Downers Grove village
• Inspections — Building inspections inside Downers Grove village
• Certificate of occupancy — Certificates of occupancy inside Downers Grove village
• Minimum dwelling size — Minimum dwelling size inside Downers Grove village

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.

Off-grid gear

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

• Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
• Power Bluetti Solar generators and home battery backup for living off the grid.
• Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
• Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.

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