Longmont prices building permits with a fee table based on project value, with a $27.00 minimum, then charges plan review at 50% of the permit fee. Enter your project to see the exact math.
Official city schedule
Effective not stated
Verified Nov 5, 2026
Minimum fee
$27.00
Plan review
50%
$75k addition
$1,412
Permit fee calculator
Longmont schedule
$
sq ft
Estimated permit fees$1,411.95
1. Building permit fee $740.05 for the first $50,000.00 + $8.05 × 25 per $1,000.00 over$941.30
2. Plan review fee 50% of $941.30$470.65
May also apply (not in the total)
Fees are estimates based on the official schedule linked below. Confirm with the permit office before applying. Separate electrical, plumbing, mechanical, fire, impact, utility and school fees are usually not included unless they are listed. BuildingPermitCost is not a government permit office, and this is not legal advice.
What common projects cost
Kitchen or bath remodel
$25,000 value, remodel 300 sq ft
$674.70
$449.80 building permit + $224.90 plan review
Room addition
$75,000 value, addition 400 sq ft
$1,411.95
$941.30 building permit + $470.65 plan review
New single-family home
$350,000 value, new single-family 2,400 sq ft
$4,128.83
$2,752.55 building permit + $1,376.28 plan review
How Longmont calculates your permit fee
The city charges a building permit fee using a fee table based on project value, with a $27.00 minimum. Plan review is a separate charge: 50% of the permit fee. Electrical, plumbing and mechanical work gets its own permits.
The fee table
Project value
Fee
$1 – $500
$27.00
$501 – $2,000
$27.00 for the first $500 + $3.50 per additional $100 or fraction
$2,001 – $25,000
$79.50 for the first $2,000 + $16.10 per additional $1,000 or fraction
$25,001 – $50,000
$449.80 for the first $25,000 + $11.61 per additional $1,000 or fraction
$50,001 – $100,000
$740.05 for the first $50,000 + $8.05 per additional $1,000 or fraction
$100,001 – $500,000
$1,142.55 for the first $100,000 + $6.44 per additional $1,000 or fraction
$500,001 – $1,000,000
$3,718.55 for the first $500,000 + $5.46 per additional $1,000 or fraction
Over $1,000,000
$6,448.55 for the first $1,000,000 + $4.20 per additional $1,000 or fraction
What counts as project value
ICC Building Valuation Data table. 'Building Inspection calculates this based on the project's gross floor area (square feet) or scope of work multiplied by the applicable ICC Building Valuation Data or RS Means Building Construction Cost Data', both adopted by City Council annually. Miscellaneous/commercial work not listed uses actual contract value.
Worked example: a $350,000 new home
Building permit fee: $1,142.55 for the first $100,000.00 + $6.44 × 250 per $1,000.00 over = $2,752.55
Plan review fee: 50% of $2,752.55 = $1,376.28
Total before trade permits: $4,128.83.
Fees people miss
Fee
Amount
City and county sales/use tax on building materials
4.865% of 50% of project valuation
Additional plan review (changes, additions or revisions)When: plans revised or resubmitted
$47.00 per hour (minimum one hour)
Re-inspectionWhen: re-inspection needed
$80.00 per hour
Foundation-only permit, one- and two-familyWhen: separate foundation-only permit requested
$200.00 each
Credit card convenience feeWhen: payment by credit card (SnapPay portal)
2.95%
Trade permits are separate. Electrical: Electrical, mechanical and plumbing sub-contractor permits and fees are required when associated with a general permit. Schedules not extracted.
How to apply
Gather your plans and your project's total value.
Submit to Planning and Development Services, Building Inspection Division.
Pay the permit and plan review fees when invoiced.
A $25,000 remodel costs $674.70 in Longmont: 78% above the national median of $380.00, and the 3rd highest of 15 places we cover in Colorado (state median $531.00).
A $75,000 addition costs $1,411.95 in Longmont: 72% above the national median of $820.58, and the 3rd highest of 15 places we cover in Colorado (state median $1,174.21).
A $350,000 new home costs $4,128.83 in Longmont: 41% above the national median of $2,918.63, and the 6th highest of 15 places we cover in Colorado (state median $3,972.62).
A $25,000 remodel: $674.70. A $75,000 addition: $1,411.95. A $350,000 new single-family: $4,128.83. These include every fee the schedule applies to that project; trade permits are separate.
Is plan review included in the Longmont permit fee?
No. Plan review is charged separately at 50% of the permit fee.
How does Longmont determine project value?
ICC Building Valuation Data table. 'Building Inspection calculates this based on the project's gross floor area (square feet) or scope of work multiplied by the applicable ICC Building Valuation Data or RS Means Building Construction Cost Data', both adopted by City Council annually. Miscellaneous/commercial work not listed uses actual contract value.
Are electrical, plumbing and mechanical permits included?
No. They are separate permits. Electrical: Electrical, mechanical and plumbing sub-contractor permits and fees are required when associated with a general permit. Schedules not extracted.
When did these Longmont fees take effect?
The schedule does not state an effective date. We last checked it against the official source on Nov 5, 2026.