Due Diligence Checklist: 17 Things to Verify Before Buying Oaxaca Land

None of the seventeen checks is exotic. There is a Public Registry with records, a notario legally responsible for the sale, and a piece of land you can walk. The checklist just makes sure nothing gets skipped. Deals fall apart on this coast for the same few reasons, over and over — and nearly always, the reason was visible before the deposit was paid.

Here is the whole checklist in one table; each check is explained below.

Group	What to verify	Who confirms
Title	Seller's name matches the deed	You + notario
Title	Deed registered at the Registro Público	Notario + registry
Title	No liens, embargoes, or attachments	Notario (registry certificate)
Title	No overlapping boundaries with neighbors	Notario, maybe a surveyor
Title	Title type: escritura, acta, or ejido	Notario + broker
Legal	Notario review of the full file	Notario
Legal	Predial (property tax) paid to date	Notario + municipality
Legal	Zoning and uso de suelo match your plans	Municipality + notario
Legal	No pending disputes or inheritance issues	Notario
Physical	Boundaries on the ground match the plan	You + surveyor
Physical	Legal access and recorded easements	You + notario
Physical	Water, power, and connectivity	You + broker
Physical	Drainage and flood or landslide risk	You, in the rains
Financial	Price in line with real comparables	You + broker
Financial	Closing-cost estimate in writing	Notario
Financial	Taxes going forward (predial, ISAI)	Notario + municipality
Financial	Deposit terms in the promesa	You + notario

The stakes

Why due diligence decides everything on this coast

Buying land is buying a title. The price is what you pay; the title is what you get. On the Oaxaca coast, lots with clean, registered titles sell at their real price, and lots with problems sell at a discount — the discount is the problem's price tag. A lot priced thirty percent below its neighbors is not a bargain — it is an acta with a quiet dispute, an ejido parcel sold as private, or a lien nobody has mentioned.

The point is not to find a perfect lot — few exist. It is to know exactly what you are buying, what it would take to fix, and what it is honestly worth with that knowledge. Every check below exists because someone on this coast learned that the problem was visible before the deposit moved. The work is boring. That is the feeling of things going right.

Due diligence is not a formality. It is the purchase — everything else is paperwork.

For the full walkthrough — the law, the process, the costs — start with our complete guide to buying land in Oaxaca. This checklist is the companion piece.

The title

The title: five checks before anything else

Everything downstream depends on who owns the land and whether that ownership is recorded. The Registro Público de la Propiedad — the Public Registry of Property — is the state's official record. If a property is not in the registry, it does not exist in a form you can cleanly buy.

1. The seller's name matches the deed. Ask for government-issued ID and compare it, letter by letter, with the name on the escritura. If the seller is a company, verify it exists and the signer has authority. Mismatches are common in inheritance chains — and every mismatch is a problem you would inherit.

2. The deed is registered at the Registro Público de la Propiedad. Registration is what makes ownership real and transferable. A deed signed but never registered is a piece of paper with a story attached. Your notario requests a current registry certificate as a matter of course; hesitation is an answer in itself.

3. No liens or embargoes are attached. An embargo is a legal seizure — usually from unpaid debts — and it attaches to the land, not the seller. The certificate of no encumbrances (certificado de libertad de gravamen) shows whether any exist. A lien does not go away when the seller does.

4. No overlapping boundaries. The deed's measurements should match neighboring deeds, not collide with them. Overlaps are common in older actas where boundaries were described by landmarks that have since moved. A surveyor settles it on the ground; the registry flags it on paper.

5. You know which title type you are buying. There are three on this coast: an escritura (the full registered deed), an acta de posesión (a possession document), and ejido or comunal land (community-owned). Only the escritura is clean and bankable. The others can be legitimate, but the price must reflect the work to convert them — work that sometimes cannot be done at all. The differences are laid out in Escritura vs Acta de Posesión vs Ejido.

The legal checks

The legal checks: four items the paperwork must survive

Once the title looks right on paper, the legal layer is about obligations attached to the land and the permissions that govern it. Each is a document that exists — or doesn't.

6. The notario has reviewed the file. A notario público is a licensed lawyer appointed by the state, with the authority — and the personal liability — to make a real-estate transaction valid. Your notario reviews the chain of ownership and prepares the escritura. Meet them before you sign anything.

7. The predial is paid. Predial is the annual property tax billed by the municipality, and unpaid predial must be settled before closing — often at your expense. The amounts are modest on most coastal lots, typically a few hundred to a few thousand pesos a year, but "modest" is not "settled." Ask for the receipts, or have the notario confirm the balance.

8. The zoning allows what you plan. Uso de suelo — the permitted land use — decides whether you can build a house, a rental unit, or an eco-lodge. The municipality issues the certificate; your notario can request it. Buying a lot where your project is not allowed is how people end up with expensive jungle.

9. No pending disputes or inheritance complications. If the seller inherited the land, the succession (sucesión) must be fully resolved and every heir must sign. If there is a pending lawsuit over the property, walk away — a quiet claim can surface years later as a competing owner. A clean answer is fast; a slow answer is usually a story.

The physical checks

The physical checks: four things to see with your own eyes

Paper can be perfect and the land still wrong. These four checks require shoes and daylight — and the rainy season, if you can manage it.

10. The boundaries on the ground match the plan. Walk every side of the lot. Corners should be marked, and distances on the ground should match the deed. On jungle lots, a few meters of discrepancy is a future dispute with a neighbor. If anything feels off, ask for a survey (levantamiento topográfico).

11. Access is legal, not just habitual. How does the lot reach a road? If access crosses a neighbor's land, there must be a recorded easement (servidumbre de paso). Habitual use is not the same as a right — a dirt track used for years can be closed, and your lot becomes landlocked. Confirm the access route in writing.

12. Water and utilities are accounted for. Where does the water come from — a well, a piped supply, a cistern? Are power poles nearby, and what does a legal connection cost? Internet? Infrastructure here is patchier than in the cities, and the gap between "the neighbor has power" and "this lot has a legal connection" can be significant.

13. The lot drains in the rainy season. The rains run roughly June through October, heaviest in late summer. Visit then. See where the water flows, whether a river or arroyo crosses the lot, and whether slopes look stable. Flooding and landslides are the two physical risks that damage coastal land, and both are visible before you buy.

The financial checks

The financial checks: four numbers to get in writing

The financial layer is where buyers get surprised — and surprise is expensive. Four numbers, all obtainable before you sign the promesa.

14. The price is in line with real comparables. Compare per square meter against similar lots that actually sold — not asking prices, not "price on request." A price on request is its own signal: clean-titled sellers publish prices; problem sellers want you in a conversation first. The Slow Coast publishes the real price on every lot we list. For what a budget buys, see what $50,000 buys on the Oaxaca coast.

15. You have a closing-cost estimate in writing. Budget 5–8% on top of the price for closing: the state acquisition tax (ISAI, roughly 2–5%), notary fees (1–2%), registry fees (about 0.5–1%), plus an appraisal (avalúo) of roughly $200–500 USD where required. Beachfront lots add a fideicomiso setup of roughly $500–1,000 USD plus an annual fee — see our fideicomiso explainer. Your notario can give the estimate before you commit.

16. You know the taxes going forward. Predial is annual and modest on most coastal lots, but it must be budgeted, and it rises if you build. If you plan to rent the property, there are income-tax obligations on that income. Have your notario outline it all before closing.

17. The deposit terms are written down. The promesa de compraventa — the purchase promise — fixes the price, the deposit (commonly 5–10%), the completion date, and what happens if either side backs out. Read the clause about your deposit if the title fails. In a fair deal it is refundable when the seller cannot deliver clean title; in a bad deal, the deposit is the point. Have your notario read it first.

The team

Who does the checking: four sets of eyes on every deal

Due diligence is a team sport, and each member has a defined job. Knowing who is responsible keeps the process honest.

Your broker. A licensed Mexican broker knows the micro-market, arranges visits, and hands you documents before you ask. A good broker pre-checks the obvious problems so you do not waste afternoons on lots that cannot close. The Slow Coast introduces buyers to brokers we would use ourselves.

Your notario. The legally responsible party. The notario verifies the title, prepares the escritura, and calculates the taxes, with personal liability if the transaction is invalid. It is the strongest protection a buyer has in Mexico — which is why a seller who avoids the notario is a red flag on its own.

The registry. The state office that holds the records. Your notario requests the certificates; you can request public information yourself too. The registry does not take sides; it holds the truth.

You. The one who walks the land, reads the promesa, and asks the questions nobody else will. Every item on the checklist has an owner. Item one — the one that matters most — is yours.

Walk away

Red flags that end the checklist early

Most of the checklist is verification. A few situations are not worth verifying at all. If any of these shows up, stop — a deal that needs your trust instead of your verification is not a deal.

• A seller who refuses a notario. The notario is the system's safety net. Refusing one is not a quirk; it is a tell.
• No documents at all. No deed, no acta, no ejido certificate — nothing to buy. Move on.
• A price far below the area. There is usually a reason, and it is usually in the title. The discount is the tell.
• Pressure. "Another buyer is coming this afternoon." On this coast, land does not vanish in an afternoon. Pressure exists to skip the checklist.
• Requests to pay the seller directly or split payments. Funds go through the notario's account, full stop. Anything else is how buyers lose deposits.

The pattern behind every flag is the same: a deal structured so your trust replaces your verification. There is always another lot.

The takeaway

Bottom line: do the work before the money moves

The checklist exists because most problems are discoverable before money moves. Seventeen checks sounds like a lot; in practice it is a few afternoons on the land, a few conversations, and a handful of documents. Clean deals feel slow and slightly boring. That is the feeling of things going right.

If a seller, a price, or a story cannot survive these checks, let it go — the coast is not running out of land. When you are ready, browse the lots we list, each with its real price and title type stated plainly, or start with the one-page buying guide. The Slow Coast introduces you to licensed brokers and notarios, publishes the real price on every lot, and never holds your money. The truth is checkable.