Madison TR-C1 zoning (MGO 28) caps lot coverage at 50%, TR-C2 at 55%. Dane County SFR-08 caps at 30%. Yahara-basin stormwater ordinance (Dane County Ch. 14) requires infiltration BMPs for impervious additions over 1,000 sq ft. NR 151 applies in shoreland districts.
Madison General Ordinances 28.032 sets maximum lot coverage by zoning district: TR-C1 at 50%, TR-C2 at 55%, TR-V1 at 60%, TR-U1 at 70%. Dane County Ordinance Ch. 10 caps SFR-08 at 30% and RR at 10%. Sun Prairie R-1 limits coverage to 40%. Fitchburg Ch. 22 caps SFR at 35%. Middleton SR-1 caps at 35%. Verona limits R-1 at 35%. Coverage includes principal buildings, accessory structures, driveways, patios, and paved surfaces. Dane County Stormwater Ordinance Ch. 14 and Wis. Admin. Code NR 151 require post-construction stormwater management and infiltration controls for projects adding more than 1 acre of disturbed area or creating significant impervious surfaces. Permeable pavers receive 50% credit in Madison. Shoreland parcels along Lake Mendota, Monona, Waubesa, and Kegonsa have reduced coverage limits under Madison's Shoreland-Wetland overlay (MGO 28.082).
Exceeding lot coverage: correction order, $200 to $500 forfeiture plus removal requirement. Stormwater violation without BMP: Dane County fines $500 to $2,500 plus DNR referral under NR 151.
Dane County, WI
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See how Dane County's lot coverage limits rules stack up against other locations.
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