How to Change a Registered Office Address in Ireland

An Irish company changes its registered office by filing Form B2 with the Companies Registration Office. The CRO says the notification should be delivered within 14 days of the change. The new address must be a physical location in the State where post and documents can be delivered—not only a PO box.

What is a registered office?

Every Irish company must maintain a registered office in the State. It is the address recorded on the company register for official correspondence and service of documents. It can differ from the place where the company trades, employs staff, stores goods or meets customers.

The CRO explains that people must be able to visit the registered office to inspect certain company registers and documents and to deliver documents by hand. The address must therefore be a real physical location capable of receiving correspondence through An Post. A PO box by itself is not acceptable.

Form B2 deadline: within 14 days

A company notifies the CRO of a registered-office change using Form B2. CRO guidance states that the form must be delivered within 14 days of the change. Its statutory-returns table identifies non-compliance as a Category 4 offence.

Do not wait until the next B1 annual return to update the address. A B1 is an annual snapshot; the B2 is the specific notification for a registered-office change.

How to change the registered office on CRO CORE

1. Confirm the exact company. Record the legal company name and CRO registration number before starting.
2. Choose a compliant physical address in Ireland. Confirm that post and hand-delivered documents will be received reliably.
3. Agree the effective date. The 14-day notification period runs from the change, so retain the supporting company decision and date.
4. Complete Form B2 through CORE. Enter the new registered office carefully, including any registered office agent details where applicable.
5. Submit the form and retain confirmation. Keep the filing receipt with the company’s statutory records.
6. Check the public record. Confirm that the company profile reflects the new address after registration.

Registered office, trading address and director address

Using a registered office agent

A company can place its registered office in the care of an authorised Registered Office Agent (ROA). The CRO says a company using an agent’s address must consent to that appointment and include the agent’s name, number and address on Form B2. The agent must have been approved by the CRO.

An ROA can provide reliable document handling, but the directors remain responsible for company compliance. Agree how urgent post, CRO correspondence and legal documents will be forwarded, and make sure the service continues for as long as the address remains on the register.

What if the statutory registers are kept elsewhere?

Changing the registered office is not always the only address filing required. If specified statutory registers are kept at a different location, the CRO may need to be notified using Form B3. The CRO states that a change in the location of those registers must be notified within 14 days of the event.

Review where the company’s registers are actually maintained, then obtain company-secretarial advice if you are unsure whether B2, B3 or both apply.

Common B2 mistakes to avoid

• using a trading address while assuming it automatically becomes the registered office;
• using only a PO box or an address where post is not reliably collected;
• waiting for the next annual return instead of filing within 14 days;
• entering the wrong company number or an incomplete address;
• failing to include registered office agent details where an ROA is used;
• forgetting to review the location of statutory registers and any Form B3 requirement;
• not checking that the public CRO record updated after submission.

Why the old address can still matter

A registered-office change becomes part of the company’s filing timeline. Researchers may see the B2 and use it to understand when the statutory address changed. A shared professional address does not prove common ownership or a trading relationship between the companies registered there.

If you are researching another business, read our guide to searching Irish companies by registered address. If you are managing the company, consider free B1 deadline reminders so the address change and annual-return timetable are not confused.

After filing: a practical verification checklist

• retain the B2 submission confirmation and effective date;
• check the public company profile after CRO registration;
• test that post is received and routed to the right person;
• update contracts, invoices, website disclosures and stationery where applicable;
• notify banks, insurers, Revenue and other bodies separately where required;
• review registered-office agent and statutory-register arrangements.

Official CRO sources

Check the CRO’s current guidance on registered-office address changes, its register-location rules and the CRO forms list before filing. This article is general information, not legal or company-secretarial advice.