On this page 6
§ 02
When a permit is required
Permit triggers and exempt work for Old Lyme
New construction, additions, structural changes, occupancy changes, decks, and most trade work.
Detached accessory structures up to 200 square feet
Fences up to 7 feet
Low retaining walls without surcharge
Sidewalks and driveways not over occupied space
Non-structural finish work
- Exempt Detached accessory structures up to 200 square feet
- Exempt Fences up to 7 feet
- Exempt Low retaining walls without surcharge
- Exempt Sidewalks and driveways not over occupied space
- Exempt Non-structural finish work
Required documents
- Permit form
- plans
- site plan
- valuation
- contractor credentials
- any related local approvals.
- Building code
- 2022 Connecticut State Building Code.
- Permit validity
- State-code 180 day rule unless extended.
- Owner-builder
- Owner applicants are generally allowed, but required licensed trades still apply.
- Contractor requirements
- Connecticut trade licenses and home improvement registration rules apply.
§ 03
Application process
Typical processing: Not publicly posted.
- 01 Start with the Building Official or forms pages on the town site.
- 02 Prepare the permit application, plans, valuation, site plan, and any zoning, coastal, floodplain, wetlands, or historic approvals needed.
- 03 Submit to the Building Official for review and fee calculation.
- 04 Pay fees, receive the permit, and schedule inspections before concealment and completion.
Typical processing time: Not publicly posted.
§ 04
Fee schedule
Old Lyme building permit fees
Fee type
Amount
01
Minimum permit fee
Not publicly posted
02
Plan check fee
Not publicly posted
03
Permit fee formula
Not publicly posted
04
Reinspection fee
Not publicly posted
Confirm accepted payment type with Town Hall before filing.
§ 05
Required inspections
Scheduling and sequence
How to schedule
- Through the Building Official by phone or email (department)
- Inspection hours
- Not publicly posted
Typical sequence: Footing, foundation, framing, rough trades, insulation or energy, final, certificate of occupancy if applicable
Correct cited items before reinspection.
§ 06
Frequently asked
Common questions about Old Lyme permits
01 Do I need a building permit in Old Lyme, CT? ▸
New construction, additions, structural changes, occupancy changes, decks, and most trade work.
02 How much does a building permit cost in Old Lyme, CT? ▸
Building permit fees in Old Lyme, CT are set by the local building department and vary by project type and valuation. The minimum permit fee is Not publicly posted. Fees are calculated as: Not publicly posted. Plan check fee: Not publicly posted.
03 How do I apply for a building permit in Old Lyme, CT? ▸
To apply for a building permit in Old Lyme, CT, follow these steps: 1. Start with the Building Official or forms pages on the town site. 2. Prepare the permit application, plans, valuation, site plan, and any zoning, coastal, floodplain, wetlands, or historic approvals needed. 3. Submit to the Building Official for review and fee calculation. 4. Pay fees, receive the permit, and schedule inspections before concealment and completion.
04 How long does it take to get a building permit in Old Lyme, CT? ▸
Building permit processing times in Old Lyme, CT typically run Not publicly posted.. Timelines can vary based on project complexity and current department workload.
05 What work is exempt from building permits in Old Lyme, CT? ▸
Not all construction work requires a permit in Old Lyme, CT. The following work is generally exempt: Detached accessory structures up to 200 square feet; Fences up to 7 feet; Low retaining walls without surcharge; Sidewalks and driveways not over occupied space; Non-structural finish work. When in doubt, confirm with the local building department before starting work.
06 How do I schedule a building inspection in Old Lyme, CT? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in Old Lyme, CT via: Through the Building Official by phone or email.
last verified April 2026
source Town of Old Lyme Building Official ↗
entry id permits/connecticut/new-london/old-lyme
Educational reference. Permit rules and fees change — confirm current requirements directly with Town of Old Lyme Building Official before applying. Jaspector is not legal advice.