What Homeowners Need to Know

Thinking about building an Accessory Dwelling Unit (ADU) or other accessory building in Cascade Township? Here's a quick guide to what’s allowed and what to watch out for:

🏡 How Many Accessory Buildings Are Allowed?

  • Less than 3 acres: 1 accessory building (plus a garage)
  • 3–6 acres: 2 accessory buildings (plus a garage)
  • More than 6 acres: 3 accessory buildings (plus a garage)

📏 Size and Setback Rules

Setbacks and height affect what you can build:

  • Up to 14 ft height (mid-roof)
    • Side setback: 10 ft
    • Rear setback: 25 ft
    • Special Use Permit required if over 832 sq ft
  • 15–18 ft height (mid-roof)
    • Side setback: 40 ft
    • Rear setback: 40 ft
    • Special Use Permit required if over 832 sq ft
  • 19–22 ft height (mid-roof)
    • Side setback: 60 ft
    • Rear setback: 60 ft
    • Special Use Permit required if over 832 sq f

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    🚗 Garage Rules

    • One garage per home is allowed by right.
    • Detached garage: Up to 832 sq ft by right; more requires a Type I Special Use Permit.
    • Attached garage: Base allowance is 832 sq ft for homes up to 1300 sq ft. You can add 1 sq ft of garage for every 5 sq ft over 1300.

    🛑 Business Use Not Allowed

    Accessory buildings can’t be used for business purposes.

    🏘️ Design & Placement Requirements

    • Buildings over 200 sq ft must match the style of the main house.
    • No accessory building allowed without a main house already built (at least 50% complete).
    • No building in front yards, unless on waterfront lots or allowed by special provision.
    • Must leave at least 10 ft between the main house and any accessory building over 200 sq ft.

    📝 Special Use Permit

    If your building is:

    • Over 832 sq ft, or
    • Over 14 ft in height
      You may need a Type I Special Use Permit. This requires a full site plan and township approval.

    ✅ Summary

    • You can likely build a small ADU (under 832 sq ft and 14 ft high) by right on most residential lots.
    • Anything larger or taller requires a Special Use Permit.
    • Style and placement must match zoning rules and your main home.

    Need help designing your ADU or navigating permits in Cascade Township? Get in touch—we’re happy to help.