3.3.06: RESIDENTIAL ZONE LOT COVERAGE OF IMPROVEMENTS:
The maximum permitted lot coverage varies with lot size. Figure 3.3.06 of this section establishes the maximum permitted lot coverage for all uses in all residential zones.
To determine the lot coverage for a proposed development, calculate the following values and add to determine the total coverage. (Ord. 821, 2-23-2006, eff. 3-16-2006)

 Building/house footprint 100 percent of footprint area = A Decks, patios, walkways, plazas, etc. 50 percent of covered area = B Driveways, surface parking, etc. 35 percent of covered area = C Total = A+B+C

(Ord. 864, 2-12-2009)
Determine the maximum permitted lot coverage (A+B+C) for home sites by using figure 3.3.06 of this section, or the following formulas:
 Minimum Lot Size Maximum Lot Size Formula
 Minimum Lot Size Maximum Lot Size Formula Less than 5,000 c=50% 5,000 10,000 c=(-4/100,000 s+0.7)*100 10,000 20,000 c=(-6/1,000,000 s+0.36)*100 20,000 40,000 c=(-2/1,000,000 s+0.28)*100 40,000 100,000 c=(-9.45/10,000,000 s+0.2378)*100 100,000 200,000 c=(-4.33/10,000,000 s+0.1866)*100 Over 200,000 c=10%

where c is the maximum allowable lot coverage, in percent, and s is the lot size, in square feet.
For sites with multiple dwellings per lot, or condominium or townhouse plats, the applicable lot size for the purposes of calculating maximum lot coverage shall be determined by dividing the entire lot size (less non-developable land) by the total number of dwelling units.
Some examples:
(A)   Lot Size = 7,000 square feet.
House plus garage footprint = 1,800 square feet x 1.00 = 1,800 (A).
Patio = 200 square feet x 0.50 = 100 (B).
Driveway and walk = 300 square feet x 0.35 = 105 (C).
A + B + C = 1,800 + 100 + 105 = 2005.
Lot size = 7,000; from figure 3.3.06 of this section, maximum value for A + B + C = 42%, or 2,940.
So this example meets the coverage requirement.
(B)   Lot Size = 15,000 square feet.
House plus garage footprint = 3,500 square feet x 1.00 = 3,500 (A).
Patio and deck = 800 square feet x 0.50 = 400 (B).
Driveway and walk = 600 square feet x 0.35 = 210 (C).
A + B + C = 3,500 + 400 + 210 = 4,110.
Lot size = 15,000; from figure 3.3.06 of this section, maximum value for A + B + C = 27%, or 4,050.
So in this example, something will have to be reduced to bring the total to 4,050.
Figure 3.3.06 (Ord. 821, 2-23-2006, eff. 3-16-2006; amd. Ord. 1009, 10-6-2022)