Buying Property in San Miguel de Allende The Process from Offer to Escritura

The mechanics of buying in San Miguel de Allende are not complicated. What makes them feel complicated to a buyer arriving from the United States or Canada is that the roles are distributed differently, and one role that exists there does not exist here by default. Start with that, because everything else follows from it.

No one in the transaction works for you unless you hire them

In Guanajuato the notario is defined by Article 3 of the Ley del Notariado as a lawyer invested with public faith, whose function is to receive, interpret, draft and give legal form to the will of the parties. Articles 1 and 2 place that function under the state Executive and bind it to the principles of rogación, professionalism, impartiality, legality and autonomy.

Read the word impartiality carefully. The notario is a state-appointed public officer, not your closing attorney and not a title company. They confirm the seller can sell, draft the deed, calculate and remit the taxes, and make the instrument fit for registration. They will not tell you the price is high, will not negotiate on your behalf, and are not obliged to point out that a clause disadvantages you.

The agent does not fill the gap. A San Miguel brokerage publishes its own industry’s commission as 6 per cent plus tax, paid by the seller; TheLatinvestor gives 4 to 6 per cent seller-paid with 0 to 2 per cent buyer-paid where a buyer-agent agreement is separately negotiated. Both have a commercial interest, and both put compensation on the seller’s side of the table.

So the buyer’s advocate is a person the buyer retains and pays. That is the most consequential difference between a Mexican purchase and a US or Canadian one, and it is structural rather than a question of goodwill.

Stage one: the offer

Article 1814 of the Guanajuato Civil Code provides that a contract of sale requires no special formality except where it concerns real property. Article 1815 makes that exception unconditional: the sale of an immovable must be recorded in an escritura pública, with no value threshold, unlike the general federal guidance that mentions a minimum-wage-multiple test. So a signed offer is never the instrument that moves the property, and whether it creates enforceable obligations between you and the seller depends entirely on its drafting.

Here we hit the first limit of the public record. We found no authoritative source describing what a San Miguel offer letter conventionally contains, whether local practice treats it as binding, or what remedies parties pursue when one walks. Every account in circulation is a brokerage describing its own house practice.

Stage two: the promissory contract and the deposit

Same limit, more sharply. There is no publicly sourced figure for what a deposit here conventionally is, and no sourced account of who holds it, under what instrument, or on what release conditions. The widely repeated “10 per cent into escrow” traces to no source that survives scrutiny.

What we can attribute, with provenance attached: one San Miguel brokerage’s undated FAQ quotes an escrow fee of USD 300 to 500 as the buyer’s half, a power of attorney usually under USD 500 before apostille or consulate processing, and an exchange-rate fluctuation reserve of USD 1,000 to 2,000 on the final transfer, mostly refundable. That is a commission-motivated, undated source, and it is the only one we have. Nothing establishes whether title insurance is commonly bought here or at what cost.

The legal ground beneath all of it does not move. Whatever the promissory contract says, it does not transfer title, and title is not good against third parties until registration.

Stage three: the notario’s file

The notario obtains the certificado de libertad de gravámenes from the Registro Público de la Propiedad, which costs MXN 470.00 in person or MXN 424.00 through the online certificates platform under Article 10 fracción IX of the 2026 state revenue law. The same rate covers certificates of inscription and registral history; certified copies are MXN 12.00 per page. Note what that certificate is: a snapshot of the register on the day it issues. It is not a warranty of clean title and it does not reach anything never registered.

The notario also carries tax duties that set the pace of everything after signature. Under Article 126 of the Ley del Impuesto sobre la Renta, fedatarios calculate the seller’s provisional income tax under their own responsibility and remit it within fifteen days of signing. Article 127 adds a 5 per cent state payment on the gain, creditable against that federal payment, so it splits revenue rather than adding to the bill. Because the notario is personally liable for the calculation, they will not sign until the seller’s tax position is resolved. Buyers experience this as unexplained delay. It is not.

Stage four: the SRE convenio

San Miguel de Allende sits in the municipality of Allende, Guanajuato, which INEGI listed by name in the Diario Oficial de la Federación on 21 May 1997 as a municipality located entirely outside the restricted zone. That is the load-bearing fact. There is no fideicomiso here and no bank trustee.

What remains is the agreement under Article 27 fracción I of the Constitution, the Calvo clause, filed with the Secretaría de Relaciones Exteriores. The constitutional text requires the foreigner to agree to be considered as a national with respect to the property and not to invoke the protection of their government regarding it, on penalty of forfeiting the property to the Nation. It is an agreement about that property, not a renunciation of citizenship.

Against the recurring claim that the rules are changing: Article 27 fracción I was last amended on 20 January 1960, the Foreign Investment Law articles implementing it carry reform annotations no later than 24 December 1996, and that law’s most recent reform, of 27 May 2024, touched the composition of the foreign investment commission rather than the property provisions.

The 2026 federal fee is MXN 5,252.02 under Article 25 fracción XV of the Ley Federal de Derechos, payable rounded to MXN 5,250.00 under Article 26-A. That fee line only came into existence with the reform published 14 November 2022. It is a fee change, not a change in rights.

The timeline is where the record fractures. We publish the fracture rather than the friendliest number.

The likeliest reconciliation is that five business days is the legal deadline after which approval is automatic, while the longer figures describe how long it takes to obtain a physical document the notario will accept in the file. We could not confirm that from a source, so we are not asserting it. The brokerage figures also exceed the statutory fee by roughly MXN 2,250, a gestoría charge nobody publishes.

One further limit. SRE’s power to waive the permit and accept only the written agreement rests on a general accord published in the DOF on 2 March 1998, which the DOF holds only as a scanned image. Its operative articles are unreadable, so the boundary between buyers who file only the escrito and those who need a full permit rests on SRE’s own summary rather than the primary text.

Stage five: the avalúo

The appraisal is not a formality, because it sets a floor under the tax. Article 180 of the Ley de Hacienda para los Municipios del Estado de Guanajuato assesses ISAI on the highest of the registered fiscal value, the transaction value, or a certified appraisal no more than one year old. Under-declaring the price does not reduce the tax if either of the other two is higher.

San Miguel’s 2026 revenue law charges a municipal appraisal fee of MXN 138.88 plus 0.6 per thousand of the resulting value, plus a further 30 per cent where a private valuer authorised by the Municipal Treasury prepared it. On a MXN 5,000,000 property that is MXN 3,138.88, or MXN 4,080.54 with the surcharge; on MXN 10,000,000, MXN 6,138.88 or MXN 7,980.54. The perito valuador’s professional fee sits on top and is fixed by no law; the market quote in circulation is MXN 1.00 to 1.50 per thousand of value.

Stage six: signing, and what the signature costs

The escritura is signed before the notario by all parties or their attorneys-in-fact, and ISAI is settled at that point. San Miguel’s ISAI is not the flat 2 per cent repeated across the internet. Two per cent is only the first bracket of a progressive tariff under Article 7 of the municipal revenue law, topping out at a fixed MXN 39,125 plus 4 per cent of value above MXN 1,500,000.

The ISAI column is deterministic arithmetic on the statutory tariff. The notary column is the maximum permitted by Article 21 fracción I of the Guanajuato Ley Arancelaria, which allows 0.5 to 2 per cent on value up to MXN 600,000 plus up to 0.5 per cent on the excess, with a further uplift of up to 50 per cent where the client requires urgency. Add 16 per cent IVA.

That column carries a warning that matters more than the number. Article 2 of the same law states the scale applies only in the absence of a contract between notary and client. It is a residual default, not a cap. San Miguel notaries contract their fees, and brokerage guidance quoting 1 to 2.5 per cent of purchase price suggests real fees run above the arancel. No independent schedule, no Colegio de Notarios de Guanajuato tariff and no survey of quoted fees exists, so we cannot tell you what a San Miguel notary will charge. Ask three.

Article 9o of the Ley del Impuesto al Valor Agregado exempts land and construction destined for use as a dwelling, so no IVA is payable on the price itself. IVA at 16 per cent does apply to the services around it: notary fees, agent commissions, legal fees and appraisals.

Stage seven: registration

Signature binds the parties. Registration binds the world. Article 1816 of the Guanajuato Civil Code states that the sale of real property produces no effect against third parties until registered, and Article 2497 confirms that unregistered documents bind only those who granted them. Article 2506 allows registration to be requested by anyone with a legitimate interest or by the notario who authorised the deed.

The 2026 fee is flat, not a percentage: MXN 2,574.00 in person, MXN 2,460.00 electronically, charged per property where one deed covers several, with derived inscriptions at 25 per cent of the first. That contradicts the widely repeated guidance that registry fees run 0.15 to 0.2 per cent of value; on a MXN 10,000,000 property that would be MXN 20,000 against a statutory MXN 2,460 to 2,574. If a closing statement shows a registry line in the tens of thousands of pesos, that line is not the registry fee.

Stage eight: predial and utilities

Predial attaches to the property and its cadastral record, so the cadastral file has to catch up with the new owner. San Miguel charges MXN 676.06 for the physical location of an urban property and MXN 51.57 to consult the fiscal appraisal history.

The 2026 tariff on urban property with buildings runs on a marginal scale from 0.234 to 0.354 per cent of fiscal value, with a minimum annual charge of MXN 349.48. There are two discounts and only two: 15 per cent for paying the full year within January, 10 per cent within February. Circulating claims of a further 5 per cent in March or a 25 per cent senior discount do not appear in the statute; the 50 per cent pensioner and disability discount elsewhere in the same law applies to water services.

One trap worth flagging before you buy. Urban and suburban land without buildings is taxed on a flat scale from 0.438 to 0.705 per cent by lot size, roughly double the built rate, and the law applies that table to any property with less than 5 per cent of its land area built on. A large lot with a small casita is taxed as vacant land.

All of those percentages apply to valor fiscal, not to what you paid, and Mexican cadastral values commonly sit well below market. We cannot tell you by how much. The ratio of fiscal to market value in San Miguel is the most important missing number in this entire subject, and nobody publishes it. Utility transfers are the same problem at the other end: we located no sourced procedure or timeline for moving electricity or water accounts into a new owner’s name here.

The sequence, and what is actually known about its duration

Most published guides, including one of our own earlier articles, give a confident total of roughly 60 to 120 days from accepted offer to keys. We can no longer stand behind that number, because we cannot source it. One statutory deadline sits in the middle of the process and one tax deadline after it. Everything else is practice, and practice varies by notario, by seller, and by how clean the title turns out to be.

The same caution applies to money. Published estimates of buyer closing costs cluster between about 4 and 9 per cent of price, most commonly 5 to 6.5 per cent, with Mexico News Daily putting San Miguel at 5 to 6 per cent against closer to 8 per cent in Querétaro. None of those figures comes from recorded transactions, and no public dataset of closing costs actually paid here exists.

What we could not source, and will not invent

• Deposit norms here: amount, holder, instrument, release conditions.
• Whether and how an offer or promissory contract binds in local practice.
• Notary fees actually quoted in 2026. The arancel is displaceable by agreement, and no schedule or survey exists.
• The ratio of cadastral fiscal value to market value, without which no predial or ISAI rate translates into a percentage of what you pay.
• Real 2026 SRE processing times. Three published figures, no operational data to reconcile them.
• Gestoría and trámite handling fees. They demonstrably exist, given the gap between MXN 5,252.02 and the MXN 7,500 quoted, but no one publishes them.
• Whether a foreign buyer needs an RFC to complete an escritura. Widely asserted, not sourced.
• Escrow and title fees from any non-brokerage source, and whether title insurance is commonly purchased here.
• Whether notaries assess ISAI on the contract price or on a lower appraisal in practice.
• How a foreign fee-simple owner in Guanajuato can record a beneficiary designation equivalent to a fideicomiso’s beneficiary substitution. That is the real trade-off against a coastal trust, and no authoritative source addresses it.

If you are quoted a confident number for any of the above, ask where it comes from. The answer is usually the last person who said it.

This page is published research, not legal or tax advice. Where the law is settled we have cited the article; where practice varies or sources conflict, we have printed the range and the conflict rather than choosing the friendlier figure. The notario handling your transaction is the legal authority on your transaction, and an independent lawyer you retain is the only person in the process obliged to act in your interest. Invest In San Miguel earns no commission and has no financial interest in whether your purchase closes.