Choose the option that best describes your work — we'll ask a follow-up question if needed, then show your fees with a full explanation.
Step 2 of 3
Is this a residential or commercial project?
This determines how the construction value is calculated. Residential uses square footage rates; commercial uses actual project cost.
Step 2 of 3
Is this solar installation on a residential or commercial property?
⚠ Residential solar building permits have a flat $125 permit fee (if required). Electrical and mechanical permits are issued separately and may require additional fees.
Commercial solar permit fees are based on the total project valuation, excluding electrical and mechanical work covered under separate permits.
Step 2 of 3
What type of cell tower work?
New cell towers or structural modifications to existing towers are based on total project cost, all labor and materials.
Step 3 of 3
Enter the square footage of your project
The county uses standard cost-per-sq-ft rates to determine construction value. Fill in each area type that applies to your project — leave others blank. Square footage is measured from exterior wall dimensions.
Please enter square footage for at least one area type.
Step 3 of 3
What is the total project cost?
Include all labor and all materials — the complete cost to finish the project.
$
Please enter a project cost greater than $0.
How your fees are calculated
Permit Subtotal
This is an estimate only. Fees are subject to verification by the Building Department. Please contact us before submitting your application to confirm the amounts due.
These figures reflect Building Department permit fees only. They do not include fees that may be required by other Missoula County departments or outside agencies as part of your project approval process.