On this page 6
When a permit is required
Permit triggers and exempt work for Derby
Work regulated by the building code and city ordinances; occupancy permits also apply in certain multifamily turnover situations
Note: Not clearly published on the web page; confirm with the department
- Permit application
- project documents as required by the city
- Building code
- Connecticut State Building Code
- Permit validity
- Not clearly stated on the web page
- Owner-builder
- Not clearly stated on the web page
- Contractor requirements
- Not clearly stated on the web page; Connecticut licensing rules still apply
Application process
Typical processing: Building Official requests at least 48 hours advance notice for appointments and availability
- 01 Review city instructions and gather required forms.
- 02 Apply through the Derby PermitLink portal.
- 03 Pay fees; city accepts credit cards and notes convenience charges.
- 04 Schedule inspections with the Building Department.
- 05 Obtain final approval and any needed occupancy signoff.
Typical processing time: Building Official requests at least 48 hours advance notice for appointments and availability
Source: Building Department ↗
Fee schedule
Effective 2026-03
Credit cards accepted; $3.95 fee for Visa debit and 2.50 percent for other card transactions
Fees change periodically. Confirm at the official fee schedule ↗ (effective 2026-03) before budgeting.
Required inspections
Scheduling and sequence
- By phone (phone)
- Inspection hours
- Inspections Tuesdays and Thursdays between 10:00 a.m. and 12:00 p.m.
Frequently asked
Common questions about Derby permits
01 Do I need a building permit in Derby, CT? ▸
02 How much does a building permit cost in Derby, CT? ▸
03 How do I apply for a building permit in Derby, CT? ▸
04 How long does it take to get a building permit in Derby, CT? ▸
05 How do I schedule a building inspection in Derby, CT? ▸
Educational reference. Permit rules and fees change — confirm current requirements directly with Building Department before applying. Jaspector is not legal advice.