Will your site pass a wastewater assessment?
Test whether your site can treat wastewater before you buy. Check soil depth, percolation results and distances to wells under Ireland's 2021 Code.
Stage 1: Find and check a site
What to check before you sign for a site: title, planning history, access, services, flood risk, wastewater. How conditional contracts and deposits work.
Buying a site is the biggest decision you make before any building starts, and it is the one hardest to undo. A plot that looks cheap can need an expensive entrance, a long service connection or a wastewater system the ground cannot support. Do the checks first, and put anything you cannot settle into the contract as a condition.
To pay for the site, read financing a site. What follows is general information, not legal advice: your solicitor does the legal checks and drafts the contract.
Work down this list before you pay anything you cannot get back. Several items need a professional, so start them while the sale is still only “agreed”.
| Check | What you are looking for | Where to look |
|---|---|---|
| Title and folio | Who owns the land, what it includes, and any burdens on it | Your solicitor, using the Land Registry records on Landdirect.ie run by Tailte Éireann |
| Planning history | Earlier applications, refusals and their reasons, appeals, enforcement | Your council’s online planning register, which is public |
| Local need | Whether the county plan limits one-off houses in the area and what evidence it asks for | The county development plan; see rural housing policy and local need |
| Access and road frontage | A legal right to reach a public road, and an entrance the council will accept | Your solicitor for rights of way; a planner or engineer for the entrance |
| Sightlines | Enough clear view of traffic from the entrance, which may need land you do not own | Ask the council which visibility distances apply |
| Wastewater | Whether the soil can treat wastewater where there is no sewer | A site assessor, to the EPA Code of Practice; see site suitability |
| Flood risk | Whether the site or its access floods | The Floodinfo.ie flood maps from the Office of Public Works |
| Water, electricity, broadband | Whether and how far each must be brought, and at what cost | Water supply and ESB connection guides |
| Wayleaves | Poles, lines or pipes crossing the land, or a neighbour’s land you will need to cross | Your solicitor; ESB Networks for its lines |
Your solicitor checks that the seller owns what they are selling. The Land Registry’s folio shows the registered owner, the land included and any burdens. A folio can be bought online through Landdirect.ie, but reading it is a legal job: ask your solicitor to explain any burden, and ask what is not shown on the folio.
Check the site has a legal right to reach a public road. A gate onto a road is not the same as a right to use it, and a shared laneway needs a right of way written down. If the route crosses a neighbour’s land, ask your solicitor to confirm it before you commit.
Search the council’s planning register for the site and its neighbours. A refusal on the same site is a warning sign: read the reasons and ask whether anything has changed. In rural areas, a county plan may limit one-off houses to people with a local connection. The 2005 Sustainable Rural Housing Guidelines set the national background, and each county applies its own wording. A suitable house design cannot overcome a refusal based on who you are rather than what you propose, so check this before you check the soil. Our planning guide explains what to expect from an application.
If the vendor says the site “has planning”, ask for the permission number and read the decision. Check the decision’s conditions, whether it has expired, and whether it was for a house on this exact plot. See how long planning permission lasts.
Rural sites often fail on the entrance. Ask the council’s planners, in a pre-application consultation, what visibility they would expect, and measure what the site can give. If a hedge must go or the view crosses a neighbour’s land, you need that settled before the purchase.
Then price the services. Electricity, water and broadband can each cost little or a lot depending on distance, and a connection that needs a wayleave cannot proceed until it is signed. Ask each provider for a site-specific answer rather than relying on a general figure.
Without a public sewer, the site needs a treatment system and a percolation area designed to the EPA Code of Practice, and the soil decides whether that is possible. A site assessment before you sign is the best money you can spend: a plot that fails it may be hard to get permission on at all. Read site suitability assessment and wastewater treatment systems.
Look up the site on the Floodinfo.ie flood maps, which show flood hazard and risk information. They are a first check, not a guarantee, so also ask the vendor and neighbours about past flooding, and ask your engineer about it.
There are normally two payments.
The exception is a condition written into the contract. Two are common for a site:
Whichever condition you rely on, ask your solicitor to confirm in writing:
A condition protects you only as far as its words go. A verbal “it’s subject to planning” is not a condition. If you are paying a large deposit on a site with no permission, the planning risk is yours until the contract says otherwise.
When the purchase completes, you become the occupier of the land. The Occupiers’ Liability Act 1995 then gives you a duty to people who enter it, even if the site is empty. Your home insurance may not cover a separate site, so ask your insurer in writing and arrange public liability cover before closing. Read insuring a site you own before you build.
If your lender is paying for the site, it will want proof of title and may ask for cover before it releases funds. Check the offer letter. See what lenders require.
If the plot is family land, read building on family land instead. If you are weighing a serviced plot, see the Ready to Build scheme.
It means the contract is conditional on you getting planning permission for a house within a set period. If permission is refused, or not granted in time, the contract says whether you can withdraw and get your deposit back. The wording is negotiated by your solicitor and varies. Do not assume a verbal "subject to planning" is binding.
Only if the contract says so. Once contracts are signed and returned, a deposit is generally not recoverable if you change your mind. A condition about planning or finance is the exception, and its exact wording decides your position. Have your solicitor explain it in writing before you sign.
Search your council's online planning register for the address or townland. Look for earlier applications, refusals and their reasons, appeals and enforcement files. A refusal on the same site is a warning sign. Ask your solicitor to check the council's records as well.
Revenue treats a site as non-residential property, charged at 7.5%. If you buy it under a connected agreement for a house to be built on it, the site is treated as residential property. Ask your solicitor which applies to your purchase.
It is a risk. A site with no permission may never get one. If you must buy before permission, ask your solicitor about a condition in the contract, and speak to the council's planners before you pay a deposit.
Last reviewed 22 October 2026. Rules and figures change, so confirm anything important with the source before you rely on it.
This guide is general information about self-building in Ireland, not financial, legal or insurance advice. Get advice that fits your own situation before you make decisions.