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Connecticut Civil Procedure Guides › Corporate & Registered Agent Service

How to Serve an LLC, Corporation, or Registered Agent in Connecticut (C.G.S. § 52-57 & § 33-663)

Learn how to serve corporations, LLCs, and commercial registered agents in Hartford County under C.G.S. § 52-57(c), § 33-663, and § 34-243r.

Connecticut Statutory Authorities Cited: C.G.S. § 52-57(c) • C.G.S. § 33-663 • C.G.S. § 34-243r • C.G.S. § 38a-25  |  Verified: 2026-11-02

Statutory Rules for Serving Corporations & LLCs in Connecticut

In Connecticut civil litigation, serving a business entity is governed by both the general civil process statute—C.G.S. § 52-57(c)—and the entity-specific statutes in the Connecticut Business Corporation Act (C.G.S. § 33-663 / § 33-929 for foreign corporations) and the Connecticut Uniform Limited Liability Company Act (C.G.S. § 34-243r).

Under C.G.S. § 52-57(c), in actions against a private corporation, service of process may be made upon the president, vice president, an assistant vice president, the secretary, the assistant secretary, the treasurer, the assistant treasurer, the cashier, the teller, the general or managing agent or manager, or upon any director resident in Connecticut, or the person in charge of the business of the corporation, OR upon any person who is at the time of service in charge of the office of the corporation in the town in which its principal office or place of business is located. In parallel, C.G.S. § 33-663 and § 34-243r authorize service directly on the corporation's or LLC's Registered Agent on file with the Connecticut Secretary of the State.

Primary Commercial Registered Agent Hubs in Hartford County, CT

The vast majority of national corporations, banks, retail chains, and foreign LLCs registered on Connecticut's CONCORD business registry designate one of four commercial registered agent locations in Hartford County. Our Hartford couriers make daily stops at all four hubs:

• C T Corporation System (CT Corp) & National Registered Agents, Inc. (NRAI): 67 Burnside Avenue, East Hartford, CT 06108.

• Corporation Service Company (CSC): Goodwin Square, 225 Asylum Street, 20th Floor, Hartford, CT 06103.

• Northwest Registered Agent, LLC: 2389 Main Street, Suite 100, Glastonbury, CT 06033.

• Registered Agents Inc. (RAI): 2389 Main Street, Suite 100, Glastonbury, CT 06033 (Important: Northwest Registered Agent, LLC and Registered Agents Inc. are separate corporate entities; always verify which company is listed on the target's Connecticut Secretary of the State filing).

Because our couriers visit East Hartford, Downtown Hartford, and Glastonbury every business day, we offer Standard ($79), Rush ($129), and Same-Day ($179) delivery to all four registered agent counters.

Need These Documents Served in Connecticut Right Now?

Upload your PDF packet online for Standard ($79), Rush ($129), or Same-Day ($179) dispatch across all 8 Connecticut counties.

Substituted Service on the Connecticut Secretary of the State (165 Capitol Ave)

What if a Connecticut LLC or corporation fails to appoint or maintain a registered agent, or its registered agent cannot with reasonable diligence be served? Under C.G.S. § 34-243r (for LLCs) and § 33-663 (for corporations), the entity may be served by registered or certified mail addressed to the entity at its principal office, OR in specified nonresident/foreign entity contexts (such as long-arm jurisdiction under C.G.S. § 52-59b or foreign corporations under § 33-929), by serving the Connecticut Secretary of the State.

Walk-in statutory service of process on the Connecticut Secretary of the State (Business Services Division) is accepted at 165 Capitol Avenue, Suite 1000, Hartford, CT 06106.

Serving Insurance Companies in Connecticut (C.G.S. § 38a-25 & Hartford Headquarters)

Hartford is the 'Insurance Capital of the World,' home to the national corporate headquarters of major carriers:

• Domestic Headquarters Subpoena & Legal Intake Desks: We serve daily at The Travelers Companies (One Tower Square, Hartford, CT 06183), The Hartford Financial Services Group (One Hartford Plaza, Hartford, CT 06155), The Cigna Group (900 Cottage Grove Road, Bloomfield, CT 06002), and Aetna Inc. / CVS Health (151 Farmington Avenue, Hartford, CT 06156).

• Foreign & Unauthorized Insurers (C.G.S. § 38a-25): Under C.G.S. § 38a-25(a), the Connecticut Insurance Commissioner is the statutory agent for service of process on all foreign and alien insurers licensed in Connecticut as well as unauthorized insurers. Service on the Connecticut Insurance Department is delivered to 153 Market Street (7th Floor), Hartford, CT 06103.

Frequently Asked Questions: Serving LLCs & Registered Agents in CT

Where is C T Corporation System located in Connecticut?

C T Corporation System (and National Registered Agents, Inc.) accepts service of process in Connecticut at 67 Burnside Avenue, East Hartford, CT 06108.

Where is Corporation Service Company (CSC) located in Connecticut?

Corporation Service Company (CSC) accepts service of process at Goodwin Square, 225 Asylum Street, 20th Floor, Hartford, CT 06103.

Where are Northwest Registered Agent and Registered Agents Inc. located in Connecticut?

Both Northwest Registered Agent, LLC and Registered Agents Inc. maintain their Connecticut registered agent intake offices at 2389 Main Street, Suite 100, Glastonbury, CT 06033, as separate companies.

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Verified Connecticut Registered Agent & Subpoena Hubs

Serving a corporation, LLC, hospital, or insurance headquarters in Hartford or New Haven County? View our field-verified intake profiles:

Connecticut Counties & Major Cities Covered Daily

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