This tool will calculate the estimated cost of building an Accessory Dwelling Unit (ADU) based on your inputs.

### ADU Cost Calculator Instructions:

This calculator helps you estimate the cost of building an Accessory Dwelling Unit (ADU) based on several factors. Here are the steps to use the calculator:

- Enter the area of the ADU in square feet.
- Select the location multiplier based on whether the build is in an Urban, Standard, or Rural area.
- Select the quality of materials to be used – Standard, High, or Basic.
- Enter the labor cost multiplier, usually starting from 1.0 for standard labor costs. Adjust up or down based on local labor rates.
- Optionally, enter any extra costs for items like landscaping, permits, etc.
- Click on “Calculate” to see the estimated total cost.

**Calculation Details:**

The total cost is calculated as:

(Area in sq ft) x (Base cost per sq ft) x (Location multiplier) x (Materials multiplier) x (Labor multiplier) + (Extras)

**Limitations:**

This calculator provides a rough estimate based on broad factors and assumptions. Actual costs can vary significantly based on specific project details, local conditions, contractor rates, and other variables not accounted for in this calculation.

## Use Cases for This Calculator

### Calculate Monthly Rent Share Based on Adult Occupants

Input the total monthly rent and the number of adult occupants to calculate how much each adult should contribute towards rent. This helps ensure fair division of rent based on the number of adults sharing the space.

### Determine Individual Utility Share Among Adults

Enter the total utility bills for the month and the number of adults to find out the amount each adult should pay towards the utilities. This allows for equitable distribution of utility costs among adult occupants.

### Estimate Grocery Expenses per Adult

Input the total monthly grocery bill and the number of adults to get an estimate of each adult’s share of the grocery expenses. This helps in budgeting and dividing grocery costs equally among adult residents.

### Calculate Total Transportation Costs for Adults

Enter the total transportation expenses and the number of adults in the household to calculate the overall transportation costs per adult. This aids in understanding individual contributions to transportation expenses.

### Split Communal Meal Costs Equally Among Adults

Input the total cost of communal meals and the number of adults to determine the equal share each adult should contribute towards communal dining expenses. This ensures a fair division of dining costs among adult occupants.

### Allocate Household Cleaning Supply Expenses

Enter the total cost of household cleaning supplies and the number of adults to calculate each adult’s share of the cleaning supply expenses. This helps in dividing cleaning costs proportionally among adult residents.

### Divide Shared Entertainment Costs Among Adults

Input the total cost of shared entertainment activities and the number of adults to determine each adult’s contribution towards entertainment expenses. This assists in fairly distributing entertainment costs among adult occupants.

### Calculate Individual Room Rental Costs

Enter the total monthly rent for the house and indicate a specific room to determine the rent share for that room based on the number of adult occupants. This allows for accurate calculation of individual room rental costs.

### Estimate Personal Care Expenses Per Adult

Input the total cost of personal care items for the month and the number of adults to calculate the estimated personal care expenses each adult should bear. This helps in managing personal care expenses efficiently among adult residents.

### Determine Individual Contribution to Shared Home Repairs

Enter the total cost of home repairs and the number of adults to calculate each adult’s share of the repair costs. This enables a fair distribution of home repair expenses based on the number of adult occupants contributing to the household.