What are ADU permit fees?

Permit fees range from $1,000-$15,000 depending on jurisdiction. California cities average $3,000-$8,000 for permits; impact fees add another $5,000-$20,000 in high-demand areas.

Has ADU permitting become easier?

California and several other states have streamlined ADU permitting since 2020, eliminating many fees and restrictions. Check local rules as they vary widely.

ADU Permit Cost by City Calculator

Formula Definitions

The ADU Permit Cost by City Calculator works by applying a well-defined formula to the values you enter. Understanding the formula behind the calculation helps you interpret the result and check that your inputs are correct. Below we break down the key components that drive the ADU Permit Cost.

The core formula used by this calculator is:

Result = f(inputs, settings)

Each variable in the formula has a specific meaning:

inputs — Values entered into the ADU Permit Cost.
settings — Options, units, or parameters that adjust how the calculation is performed.
Result — Computed output for the chosen inputs and settings.

How to Use This Calculator

Enter the required values. Enter the required values into the ADU Permit Cost by City Calculator input fields.
Adjust settings. Adjust any settings, select applicable options, or choose units as needed.
Calculate the result. Press Calculate to compute the result using the underlying formula.
Interpret the output. Review and interpret your result using the provided context, reference ranges, or explanatory notes.

Glossary and Definitions

Input: A value entered into the calculator to be processed.
Output: The computed result returned by the calculator for the given inputs.
Setting: An option that adjusts how the calculation is performed, such as unit selection or mode.
ADU permit cost: A key concept referenced by the ADU Permit Cost: Calculate accessory dwelling unit (ADU) permit costs, development fees, and total build cost by city. Compare local regulations, impact fees, utility connection fees, and design review costs across major US metropolitan areas.
Accessory dwelling unit cost: A key concept referenced by the ADU Permit Cost: Calculate accessory dwelling unit (ADU) permit costs, development fees, and total build cost by city. Compare local regulations, impact fees, utility connection fees, and design review costs across major US metropolitan areas.
Backyard cottage cost: A key concept referenced by the ADU Permit Cost: Calculate accessory dwelling unit (ADU) permit costs, development fees, and total build cost by city. Compare local regulations, impact fees, utility connection fees, and design review costs across major US metropolitan areas.
Granny flat permit: A key concept referenced by the ADU Permit Cost: Calculate accessory dwelling unit (ADU) permit costs, development fees, and total build cost by city. Compare local regulations, impact fees, utility connection fees, and design review costs across major US metropolitan areas.

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