Environmental impact study (MIA, federal through SEMARNAT or state)

An environmental review. Works in coastal ecosystems, or that clear native vegetation, can need a federal MIA (Manifestación de Impacto Ambiental) or a preventive report from SEMARNAT, or a state-level review instead.

Why it matters

LGEEPA (federal environmental law) art. 28 and the state's ecological-balance law.

Who helps

An environmental consultant. State: the BCS environment authority (DGMARN) sets the modality: informe preventivo, or MIA general, intermedia or específica. Federal: SEMARNAT, whose central office sends lot-specific questions to the BCS delegation.

What to do: Ask an environmental consultant whether your project needs an impact review.

Documents

Survey, project description, photos, and the land-use approval.

Costs Estimate

Start with the free request asking SEMARNAT whether you need an environmental authorization at all (SEMARNAT-04-006, exención o no requerimiento). No fee; the answer is due within 20 business days, or 10 through the online Ventanilla Electrónica Ambiental.
If a MIA is required, it can take up to about 2.5 years (one gestor's estimate).
Federal 2026 fees: Informe Preventivo MXN 17,975; MIA particular MXN 48,339 / 96,680 / 145,021, depending on complexity.
State fees: Informe Preventivo MXN 11,266; general MIA MXN 17,437.
Consultant fees: no published figure; ask for a quote.

Estimates only. Get written quotes.

Common mistakes

Clearing land before you know.
Paying a filing fee before a consultant confirms which route applies.

Say it in Spanish

¿Este proyecto requiere manifestación de impacto ambiental, federal o estatal?
Does this project need an environmental impact statement, federal or state?