Connecticut 9-Year Permit Rule Explained
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Old Permits, New Clarity: Connecticut’s 9-Year Rule Explained in Plain English
If you own property in Connecticut or have done construction work, you may have heard that building permits can “expire” or be closed out after nine years. But many people—homeowners and even local officials—have been confused about how this rule works, especially for smaller projects.
Here’s a simple breakdown of what the law means and what recently changed.
The Basic Rule: What Happens After 9 Years?
Connecticut law (§29-265(c)) says that if a building permit has been open for nine years and no final approval has been issued, the permit should be closed out.
Think of it this way:
If a project sits unfinished (at least on paper) for nearly a decade, the state does not want that permit lingering forever.
The Source of Confusion
The law specifically mentions something called a “Certificate of Occupancy” (CO).
A CO is typically issued when a home or building is ready for people to live in or use.
But here’s the issue:
Not every project needs a Certificate of Occupancy.
For example, smaller projects like:
Decks
Pools
Garages
Retaining walls
Electrical or plumbing work
These projects are usually finalized with a “Certificate of Approval” (COA) instead.
So What’s the Problem?
Because the law only mentions Certificates of Occupancy, some towns have assumed:
👉 The 9-year rule applies only to projects needing a CO
👉 And does NOT apply to projects that only need a COA
That interpretation meant some permits could stay open indefinitely—just because they didn’t require a CO.
The State Steps In to Clarify
On May 27, 2026, Connecticut’s State Building Inspector issued guidance to clear up the confusion. Here’s the key takeaway in plain terms:
👉 A Certificate of Approval (COA) is basically part of the same system as a Certificate of Occupancy (CO).
Even though the law only uses the term “CO,” it was always meant to cover both types of final approvals.
What the State Confirmed
The guidance made a few important points:
COAs are just a Connecticut-specific version of final approval
They fall under the same category as COs in the building code
The original goal of the law was to close out ALL old permits after 9 years, not just some
Bottom line:
The 9-year rule applies to BOTH Certificates of Occupancy AND Certificates of Approval.
What This Means for You
If you are a property owner, this is good news:
Old permits for things like decks, pools, or renovations may now be considered closed after 9 years
You may not need to chase down old approvals for long-forgotten projects
There is now more consistency across towns
For municipalities, it means:
Apply the rule the same way to all permits
No more distinction between CO vs. COA for this purpose
Final Takeaway
The rule is now simple:
👉 If a permit has been open for 9 years without final approval—whether it needed a CO or a COA—it can be closed out.
This clarification removes uncertainty and keeps old permits from creating long-term headaches for property owners.
Contact Information
If you have questions about old permits, property issues, or compliance with Connecticut building laws, feel free to reach out:
David E. Rosenberg, Esq.
GLG Law, LLC
Main Office
60 Church Street, Suite 4FG
Wallingford, CT 06492
Southington Office
26 North Main Street, Suite 2B
Southington, CT 06489
Tel: 203-742-1509
Fax: 203-742-1849
Cell: 203-444-1264
Email: david@glg-law.com
Article FAQs
Does Connecticut automatically close building permits after 9 years? | Under Connecticut law, permits that remain open for nine years without final approval may be closed out, subject to municipal procedures and applicable guidance. |
Does the 9-year rule apply to Certificates of Approval (COAs)? | Yes. Connecticut's State Building Inspector clarified that the 9-year rule applies to projects requiring either a Certificate of Occupancy (CO) or a Certificate of Approval (COA). |
What is the difference between a CO and a COA? | A Certificate of Occupancy is typically issued when a building is ready for occupancy. A Certificate of Approval is often used for smaller projects such as decks, pools, garages, and similar improvements. |
Can an old open permit affect the sale of my property? | Potentially. Open permits can create complications during real estate transactions, title reviews, and municipal compliance inquiries. |
Should I consult an attorney about old building permits? | If an open permit is affecting a property sale, financing, title issue, or municipal dispute, consulting a Connecticut real estate attorney may help clarify your options. |
Source Acknowledgment: This article was prepared using information from Connecticut statutes, guidance issued by the Connecticut State Building Inspector, and industry resources published by First American Title Insurance Company. Readers should consult legal counsel regarding specific circumstances. This article is for general information only and is not legal advice.