Residential Zoned Land Tax explained — the 3% levy, the annual map, and what it means for buyers and landowners

The Residential Zoned Land Tax is the State's instrument for pushing zoned, serviced land into housing. It is administered by Revenue, mapped by the councils, and appealed to An Coimisiún Pleanála, which makes it the one tax with a planning calendar. The mechanics are in Part 22A of the Taxes Consolidation Act 1997, inserted by the Finance Act 2021 and amended in each Finance Act since. This guide sets out who pays, how the annual map works, what the windows are, and what a buyer should check — it is not tax advice, and the amendments come yearly.

What is taxed

Land is within the scope of RZLT when, on the relevant date, it is:

• zoned for residential use, or for a mixture of uses including residential, in the development plan or local area plan; and
• serviced — connected or capable of connection to water, drainage, roads and lighting sufficient for housing; and
• not excluded. The main exclusions are existing residential properties liable to Local Property Tax (a house and its garden are out, even on zoned land); land used for a trade or business where the zoning would not allow that use to continue; land subject to certain physical or contractual constraints; and some infrastructure and amenity land.

The councils identify the land by mapping it. The tax is then 3% of the market value of the land each year, self-assessed and paid to Revenue, with the first liability date on 1 February 2025 and a return and payment due by 23 May.

The annual map and its windows

Each council publishes an annual draft map and a final map, on a statutory calendar that Dún Laoghaire-Rathdown sets out on its RZLT page:

A landowner who thinks their land does not meet the criteria — it is not serviced, it is in active business use, it is not actually zoned as mapped — makes a submission by 1 April and, if refused, appeals by 1 August. Miss the submission and the appeal is gone; the year's liability follows the final map. Our deadlines page lists the RZLT windows for each county as they open.

The volume of dispute has been large. Trade press reported over 650 appeals to the Board in the first cycle, and the Board's 2023 annual report records that 21 of the 86 judicial reviews served on it that year concerned RZLT — a quarter of all planning judicial reviews.

The rezoning route

The Finance Act 2024 allowed a landowner to request that the council rezone the land — typically from residential to agricultural — and exempted the land from the 2025 liability while the request was considered. The councils' RZLT pages describe the current round. Whether a rezoning request is open, and what it exempts, changes with each Finance Act; check the council page and Revenue's guidance for the year.

What is on the Dublin maps

The four Dublin councils publish their maps as GIS layers, which we hold as parcels. The areas are large.

The parcel counts are not comparable between councils — South Dublin publishes its map as individual plots, the others as larger tracts — so read the hectares. Our map shows the parcels as a layer and the address report says whether a pin falls inside one.

What a buyer should check

Buying a house. A house liable to LPT is excluded, so RZLT is rarely a direct cost for a home buyer. The exposure is a large garden or an adjoining plot on the same title that is zoned and serviced: it can be in scope on its own. Ask your solicitor to check the final map for the whole folio.

Buying land, or a house with land. RZLT runs with the land: a purchaser takes on the liability from the next liability date, and unpaid RZLT is a charge that must be cleared or apportioned on sale. Ask for the vendor's Revenue registration and returns, check whether a submission or appeal is pending, and price the 3% into a holding period. A site "with planning permission" on the map is taxed until the houses are built and liable to LPT — the deferrals in the Act cover the period while an application, appeal or judicial review is under way, and during construction, but on conditions.

Farming. Agricultural land that happens to be zoned residential is the political heart of the tax. The exclusions, the rezoning requests and the deferrals for land in active farming have changed each year; the Revenue guidance for the current year is the only reliable statement.

Where it meets planning

The tax was designed to bite on land with permission that is not being built. The extension-of-duration guide explains the five-year life of a permission and the commencement notice that shows it has been acted on; RZLT is what makes letting a permission run down expensive. For a developer weighing an appeal, the deferral of the tax while an appeal or judicial review is pending is part of the arithmetic, and the Commission's decision date is the date the deferral ends.

Frequently asked questions

What is the Residential Zoned Land Tax rate?

3% of the market value of the land, charged annually under Part 22A of the Taxes Consolidation Act 1997. The first liability date was 1 February 2025 with payment due by 23 May.

Is my house liable for RZLT?

A residential property liable to Local Property Tax, including its garden, is excluded. Separate zoned and serviced land on the same title can be in scope.

How do I get land removed from the RZLT map?

Make a submission to the council by 1 April on the draft map, arguing the land does not meet the criteria or asking for it to be rezoned; if the council refuses, appeal to An Coimisiún Pleanála by 1 August. The council's RZLT page sets out the year's dates.

Does planning permission exempt land from RZLT?

No. Land with permission remains in scope. The Act provides deferrals while an application, appeal or judicial review is pending and during construction, subject to conditions; check Revenue's guidance.

Who administers RZLT?

Revenue collects the tax on self-assessment; the councils prepare and publish the maps; An Coimisiún Pleanála hears appeals against the councils' map determinations.