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Guanacaste Legal · Insights
Building & Land

No water letter, no build

July 2026 · David Anderson, J.D.

The most common heartbreak we see is not a bad title — it is a buyer who closes on a gorgeous lot and then discovers they cannot build on it. Two things quietly decide whether land is buildable: water and access.

To build, you need…The proofWithout it
Legal waterA water availability letter from the local ASADA or AyANo permit — you can’t build
Legal accessRoad frontage or a legally registered right-of-wayLandlocked on paper

Both are required — and both are often undisclosed. We confirm each in writing before you commit.

Water availability

To get a construction permit you generally need proof of a legal water source — a water availability letter from the local ASADA (community water board) or AyA. In popular areas, water allotments can be capped or frozen. No letter, no permit, no house.

Legal access

The lot needs a legally registered way in — road frontage or a registered right-of-way. A dirt track your neighbour “lets you use” is not the same thing, and it can vanish when that neighbour sells.

The short version

Confirm water and access before you buy, not after. If a lot cannot get them, its real value is a fraction of the asking price.

We verify both, in writing, as part of due diligence — so “someday we will build” stays a plan, not a loss.

Have a property in mind? We’ll tell you exactly what to watch for.