How to know the real value of a lot in Mexico

Knowing what a lot is worth in Mexico requires going beyond the cadastral value. The gap between cadastral value, commercial value and closing price can be huge: while the first rarely exceeds 60% of the second, the price the market actually pays depends on supply, demand, land use and available services. This guide shows you how to combine sources to land on a trustworthy number.

Three values to differentiate

• Cadastral value: assigned by the municipality for property-tax purposes. Lowest of the three.
• Commercial or market value: what a buyer would be willing to pay and a seller to accept.
• Bank appraisal value: set by an authorized expert with conservative methodology. Usually between commercial and cadastral.

Method 1: comparables study

Most used for urban lots. Procedure:

1. Gather at least 8 listings of similar lots (land use, size, frontage, services) in the same neighborhood or municipality.
2. Convert each to price per m².
3. Filter extremes: drop the top 10% and the bottom 10%.
4. Apply a 5% to 12% discount to the average since listing prices tend to be above real closing.

For rural lots, look for comparables per hectare and consider factors like water access, soil quality and proximity to main roads.

Method 2: automated valuators

Platforms that cross RPP, SAT and portal data generate quick estimates. Their accuracy depends on the area's transaction volume. They work very well in consolidated urban areas like Polanco, San Pedro Garza García or Providencia, and worse in rural zones.

Method 3: project residual

Useful when the land is going to be developed:

• Estimate how much sellable surface will result given land use.
• Set a sale price per m² for the finished product.
• Compute the project's potential revenue.
• Subtract construction costs, urbanization, marketing expenses and expected profit (15% – 25%).
• The remainder is the lot's maximum value.

Method 4: bank or fiscal appraisal

To record a sale before a notary or apply for a mortgage, you need an appraisal from an expert authorized by the state. Three advantages:

• It provides legal certainty.
• It uses standardized methodology (RICS or SHF as applicable).
• It's required for Infonavit, Fovissste or bank operations.

Cost ranges from $4,000 to $20,000 MXN depending on the lot's size and complexity.

Information you need to gather

• Deed and lien-free certificate from the RPP.
• Current property-tax bill with cadastral value.
• Municipal zoning map and land use.
• Available services: water, drainage, electricity, paving.
• Real frontage and depth measured on site.
• Topography and restrictions (easements, rights-of-way).

Factors that move price

• Location: two lots 500 meters apart can have very different prices.
• Allowed density: how many dwellings or buildable m² are possible.
• Market state: in cities like Querétaro and Mérida, well-located lots have appreciated consistently.
• Size: very large lots can have a "wholesale discount" because there are fewer buyers.
• Shape: irregular lots or those with reduced frontage lose value.
• Risk: flood-prone areas, geological faults or invasions reduce value.

Example: lot in Mérida

Residential lot of 250 m² in Las Margaritas neighborhood:

• Cadastral value: $300,000.
• Active comparables: $4,200 to $4,800 per m² → adjusted average: $4,400/m².
• AVM: $1,080,000.
• Estimated market value: $1,050,000 – $1,150,000 MXN.

If the owner sells for $750,000, they're underselling. If they ask $1,400,000, their negotiating position is weak without extra support.

Common errors

• Sticking to cadastral value to set price.
• Comparing residential-use lots with mixed-use ones.
• Forgetting that the lot's frontage impacts valuation.
• Ignoring demolition cost of obsolete structures.
• Failing to consider the regularization cost if the lot has registry issues.

How to present the result

If you're going to sell, prepare a simple sheet with:

• Address and dimensions.
• Land use and allowed height.
• Available services.
• Comparables used with date and source.
• Recommended price range and starting price.

That sheet improves negotiation and reduces the risk of accepting offers below real value.

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