Town of Patterson, NY: zoning for new construction

Putnam Lake Residence - The 38% coverage cap is a maximum impervious surface coverage, counting buildings, paving and every other impervious cover together, so driveways and patios compete with the house for the same allowance.

• The town sets no separate building coverage percentage, so the impervious surface cap is the binding site constraint here.
• The 75 ft width figure is a minimum road frontage; this district states no average lot width.
• The 750 sq ft minimum is livable first floor area for dwelling purposes.
• Accessory structures of 120 sq ft or less and under 10 ft tall take a 5 ft side and rear setback; anything larger or taller takes 10 ft.
• The front yard for accessory structures is 15 ft.

Residence 1 - The 12% coverage cap applies to all impervious surface together, buildings, paving and every other impervious cover, so driveways and patios compete with the house footprint. Two width standards both bind: 150 ft average lot width and 100 ft minimum road frontage.

• The figure shown is average lot width; a lot can meet the 100 ft road frontage and still fail the 150 ft average width.
• No separate building coverage percentage is set, so the impervious surface cap is the binding site constraint and should be modelled directly.
• The 1,000 sq ft minimum livable area is a first floor requirement, so a two storey design must still deliver it at grade.
• Accessory structures follow their own yard standards rather than the principal building setbacks: 35 ft front, 15 ft side, 25 ft rear.

Residence 2 - The 10% coverage cap is a maximum impervious surface coverage, counting buildings, paving and every other impervious cover together. Lot width also has two standards that both bind: a 200 ft average lot width and a minimum road frontage of 175 ft.

• Road frontage must be at least 175 ft, and the 200 ft standard is an average width, so a lot can meet its frontage at the road and still fail on average width.
• Accessory structures have their own yard standards, separate from the principal building setbacks: 40 ft front, 20 ft side, 25 ft rear.
• The 1,000 sq ft minimum is livable first floor area for dwelling purposes.
• The town sets no building coverage percentage, so the impervious surface cap is the binding site constraint to plan against.

Residence 4 - Two width standards both apply here: the 250 ft figure is an average lot width, and a lot must also have at least 225 ft of road frontage. A lot can meet its frontage at the road and still fail on average width.

• The 10% coverage cap is a maximum impervious surface coverage, counting buildings, paving and every other impervious cover together.
• No separate building coverage percentage is set, so the impervious cap is the binding site constraint.
• Accessory structures have their own yard standards: 40 ft front, 20 ft side and 25 ft rear.
• The 1,000 sq ft minimum livable floor area is measured on the first floor used for dwelling purposes.

General Business - The 65% figure is a cap on total impervious surface, counting buildings, paving and every other hard cover together, so it is the binding limit on how much of the lot can be developed.

• No separate building coverage percentage applies in this town, so site plans should be modelled against the impervious surface cap.
• The 100 ft width figure is a minimum road frontage requirement; no average lot width is set for this district.
• Accessory structures have their own yard requirements, 25 ft front, 10 ft side and 10 ft rear, which differ from the principal building setbacks shown.
• The 900 sq ft minimum is a floor area requirement for the building, not a minimum livable first floor area for a dwelling.

Commercial 1 - The 65% coverage cap is a maximum impervious surface coverage, counting buildings, paving and every other impervious cover together, so parking and driveways eat into it. The 200 ft width figure is a minimum road frontage.

• No building coverage percentage is set, so the impervious surface cap is the binding site constraint and should be modelled directly.
• Accessory structures have their own yard requirements, separate from the principal building setbacks shown: 40 ft front, 20 ft side, 30 ft rear.
• The 1,500 sq ft figure is a minimum floor area for the building rather than a livable first floor area for dwelling purposes.
• This district states no average lot width requirement.

Industrial - The 65% coverage figure is a maximum impervious surface cap, counting buildings, paving and every other impervious cover together, so it is the binding limit on how much of the lot can be developed.

• The 200 ft lot width is a minimum road frontage; this district states no average lot width.
• The 1,500 sq ft minimum is a floor area for the building, not a livable first-floor area for dwelling purposes.
• Accessory structures have their own yard requirements, 40 ft front, 20 ft side and 30 ft rear, separate from the principal building setbacks shown.
• The 65 ft front yard is the deepest in Patterson.

Commercial Recreation - The 25% coverage figure is a maximum impervious surface cap, counting buildings, paving and every other impervious cover together, so it is the binding site constraint. The 200 ft width figure is the minimum road frontage.

• Accessory structures have their own yard requirements, separate from the principal building setbacks: 40 ft front, 20 ft side, 30 ft rear.
• No building coverage percentage is set, so the impervious surface cap is what to model.
• No average lot width is stated for this district.
• No minimum floor area applies in this district.

Open Space Overlay District - OSO is an overlay, so the underlying residence district's standards apply alongside these figures. The minimum lot size is set by § 138-49.A in the subdivision chapter rather than in the zoning schedule.

• Two width standards both bind: an average lot width of 150 ft and a minimum road frontage of 125 ft. The figure shown is the average lot width.
• The 20% figure is a maximum impervious surface coverage, counting buildings, paving and every other impervious cover together.
• Accessory structures have their own yard requirements, separate from the principal building setbacks shown: 35 ft front, 20 ft side, 30 ft rear.
• The open space restrictions of Chapter 138, Part 2 apply on top of these standards.
• The 1,000 sq ft minimum is livable first floor area for dwelling purposes.