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Revaluation 2023

Tailte Eireann:

The Valuation Office has merged with the Property Registration Authority and Ordnance Survey Ireland to form a state organisation, Tailte Eireann. 

Tailte Eireann came into effect on 1st March 2023.

All existing contact details for the Valuation Office will remain in use.

Further information is available on the following links:

Valuation Office - Change of Name

Tailte Eireann

Tailte Eireann Gaeilge

Official launch of new state agency Taillte Eireann

The Valuation Office, as part of the National Revaluation Programme is undertaking the revaluation of all rateable properties in Co Mayo. 

Having a modern valuation base is important for the levying of commercial rates on a fair and equitable basis across all economic sectors and for ensuring that rates remain as a stable contributor to funding Local Government. 

The Commissioner of Valuation has made a valuation order formally commencing the revaluation. It was originally intended that the revaluation of Mayo would have been completed by the publication of a new valuation list in September 2021. This was then deferred for twelve months to September 2022 due to Covid 19. Please see link below to 2021 Amendment for further details.

The Valuation Office announced in February 2022, a further deferral of Revaluation 2021.  The Revaluation  will now be finalised in October 2023 and become effective for Rates purposes from 2024 onwards. The deferral of revaluations is to allow for the impact of COVID-19 on the commercial property market to be assessed and reflected in the revaluation of the local authority area.​ 

Reval 2023 is the new name for the merged Reval 2021 (includes Mayo County Council, Clare County Council, Donegal County Council, Galway City and County Council and Kerry County Council) and Dun Laoghaire- Rathdown Reval Projects.

On 2nd September 2022, the Commissioner of Valuation, with the consent of the Minister for Housing, Local Government and Heritage, revoked existing Valuation Orders for the revaluation of commercial and industrial properties in Clare, Donegal, Dún Laoghaire-Rathdown, Galway, Kerry and Mayo County Council and Galway City Council Rating Authority areas.

Following the completion of a statutory consultation process between the Commissioner of Valuation, the Minister for Housing, Local Government and Heritage and the relevant Local Authorities, the Commissioner, on the 6th September 2022, made new valuation orders for these rating authority areas.

September 2023 - Valuation Certificates

Tailte Eireann will issue Valuation Certificates to all ratepayers on September 15th 2023.

Where a ratepayer is dissatisfied with their Valuation, the ratepayer should appeal to the independent Valuation Tribunal by October 19th 2023.

Further information is available from Tailte Eirean - Reval 2023

Please be aware that the Valuation (Net Annual Value) on the Valuation Certificate that you have received, is NOT your Rates Liability

Walk In Clinics

Walk in Clinics will be  held in locations throughout Co Mayo between Monday, October 2nd and Friday, October 6th 2023.

Tailte Eireann staff will be available to answer ratepayer queries, relating to the issue of the Valuation Certificates. No appointment will be necessary. Please bring your Valuation Certificate with you to tthe Clinic.

Details are as follows.

Municipal District




Monday 2nd October

10am-4 pm

Áras an Chontae, The Mall, Castlebar, Co. Mayo F23WF90


Tuesday 3rd October

10am-4 pm

Áras an Chontae, The Mall, Castlebar, Co. Mayo F23WF90


Tuesday 3rd October

 10am- 4 pm

Claremorris Area Office, Kilcolman Road, Claremorris, Co. Mayo F12 P383


Wednesday 4th October

10am- 4 pm

Ballina Civic Offices, Arran Place, Ballina, Co. Mayo F26 E5D7


Thursday 5th October

10am-4 pm

Westport Civic Offices, Altamount Street, Westport, Co. Mayo, F28 W248


Friday 6th October

10am- 4 pm

Belmullet Civic Offices, Church Road, Belmullet, Co. Mayo F26 W5H0


INDICATIVE Annual Rate on Valuation (ARV) - REVAL 2023

Indicative ARV for Mayo County Council = 0.239

The commercial rates payable in any year is calculated by multiplying the valuation of the property,set by Tailte Eireann, by the Annual Rate on Valuation (ARV) which will be set by your Local Authority.

For the purposes of calculating what your 2024 Commercial Rates Liability might be - Multiply the valuation (from your letter) x  the Indicative Annual Rate on Valuation (ARV) of 0.239.

 Valuation x Indicative ARV =  Estimated Rates Liability for 2024.

For example: Your Valuation is €10,000 x 0.239 = €2,390.00 - Estimated 2024 Rates bill.


Tailte Eireann have provided a Rates Estimate Calculator. Select Mayo from the drop-down box and insert the Valuation Figure on your letter in the Net Annual Value box and then click on Estimate. This will calculate your Rates Estimate Liability for 2024 in monetary terms.

The actual rates liability for 2024 will be calculated by multiplying the calculation of the property, set by Tailte Eireann, by the ARV which will be set by the local authority in Quarter 4 of 2023.

Mayo County Council would encourage all Ratepayers to engage with Tailte Eireann if they have queries in relation to their valuation.

Ratepayer support in relation to ‘Reval 2023’  is available at:


Reval 2023 Phone: 01 584 6753


All enquiries and further information can be obtained from Tailte Eireann, by e-mail or call 01-8171033/LoCall: 1890 531 431

Please see the following for further information 

Supporting Evidence to be provided at Representations



Valuation Office Press Release September 6th 2022

Valuation Order September 2022

Reval 2023 Details

Deferral of Revaluation 2021 until 2023

Valuation Office - Deferral of Revaluation - FAQ

2021 Amendment to Valuation Order

Valuation Order 

Sample of Cover Letter from Valuation Office 

Sample Revaluation Information Form - Section 46



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