Building Permit Fees in Waterbury, CT (2026)

What common projects cost

Kitchen or bath remodel

$25,000 value, remodel 300 sq ft

$706.50

$650.00 building permit + $50.00 certificate of occupancy/approval + $6.50 state of connecticut

Room addition

$75,000 value, addition 400 sq ft

$1,969.50

$1,900.00 building permit + $50.00 certificate of occupancy/approval + $19.50 state of connecticut

New single-family home

$350,000 value, new single-family 2,400 sq ft

$8,916.00

$8,775.00 building permit + $50.00 certificate of occupancy/approval + $91.00 state of connecticut

How Waterbury calculates your permit fee

The city charges a building permit fee using a fee table based on project value. Electrical, plumbing and mechanical work gets its own permits.

The fee table

Project value	Fee
$1 – $1,000	$50.00
Over $1,000	$50.00 for the first $1,000 + $25.00 per additional $1,000

Added to every matching permit

Certificate of Occupancy/Approval: a flat $50.00 (All projects)

Surcharges

State of Connecticut fee: $0.26 per $1,000 of value

What counts as project value

Your contract or bid price. Fees are based on the total estimated cost of the work including all parts, materials and labor.

Worked example: a $350,000 new home

Building permit fee: $50.00 for the first $1,000.00 + $25.00 × 349 per $1,000.00 over = $8,775.00
Certificate of Occupancy/Approval: flat fee = $50.00
State of Connecticut fee: $350,000.00 ÷ 1,000 × $0.26 = $91.00
Total before trade permits: $8,916.00.

Fees people miss

Fee	Amount
Sign licenseWhen: sign contractors	$35.00 each
Sign license renewalWhen: sign contractors	$25.00 each
Zoning, Fire Marshal or Water Pollution Control feesWhen: depending on the work being performed; call to confirm	varies

Trade permits are separate. Electrical: $50 for the first $1,000 of estimated cost plus $25 each additional $1,000, plus state fee $0.26 per $1,000; certificate of occupancy/approval $50 may be required. Plumbing: $50 for the first $1,000 of estimated cost plus $25 each additional $1,000, plus state fee $0.26 per $1,000; certificate of occupancy/approval $50 may be required. Mechanical: HVAC: $50 for the first $1,000 of estimated cost plus $25 each additional $1,000, plus state fee $0.26 per $1,000; certificate of occupancy/approval $50 may be required.

How to apply

Gather your plans and your project's total value.
Submit to Department of Inspections.
Pay the permit and plan review fees when invoiced.
Questions: 203-574-6832

Source record

Effective: 2024-07-01
Verified: 2026-11-05
Issuer: Department of Inspections
Valuation: Your contract or bid price
Confidence: medium

Department of Inspection Fee Schedule (Effective 7/1/24)

What this page does not cover (3)

Whether a partial $1,000 of estimated cost is charged as a full $1,000 (permit and state fee) is not stated; computed pro rata.
Certificate of Occupancy/Approval $50 treated as part of every building permit (listed unqualified under Building Permits).
Zoning, Fire Marshal and Water Pollution Control fees may apply but are not published in this schedule.

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.

Report an error · How we verify fees

How Waterbury compares

A $25,000 remodel costs $706.50 in Waterbury: 86% above the national median of $380.00.

A $75,000 addition costs $1,969.50 in Waterbury: about 2.4 times the national median of $820.58.

A $350,000 new home costs $8,916.00 in Waterbury: about 3.1 times the national median of $2,918.63.

Same standard projects everywhere, including plan review and required surcharges. All Connecticut places · Compare side by side

Waterbury permit fee FAQ

How much is a building permit in Waterbury, CT?

A $25,000 remodel: $706.50. A $75,000 addition: $1,969.50. A $350,000 new single-family: $8,916.00. These include every fee the schedule applies to that project; trade permits are separate.

Is plan review included in the Waterbury permit fee?

Waterbury lists no separate plan review fee for these projects.

How does Waterbury determine project value?

Your contract or bid price. Fees are based on the total estimated cost of the work including all parts, materials and labor.

Are electrical, plumbing and mechanical permits included?

No. They are separate permits. Electrical: $50 for the first $1,000 of estimated cost plus $25 each additional $1,000, plus state fee $0.26 per $1,000; certificate of occupancy/approval $50 may be required. Plumbing: $50 for the first $1,000 of estimated cost plus $25 each additional $1,000, plus state fee $0.26 per $1,000; certificate of occupancy/approval $50 may be required. Mechanical: HVAC: $50 for the first $1,000 of estimated cost plus $25 each additional $1,000, plus state fee $0.26 per $1,000; certificate of occupancy/approval $50 may be required.

When did these Waterbury fees take effect?

The schedule is effective Jul 1, 2024 (“Effective 7/1/24”). We last checked it against the official source on Nov 5, 2026.