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Alexandre Moustardier, Environmental Attorney in the United States

focused on Environmental and Government

Dedicated environmental attorney.

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Quick answer

Alexandre Moustardier is an attorney based in the United States. The practice focuses on Environmental and Government.

Based in
the United States
Experience
attorney
Known for
Environmental · Government
  • Handles Environmental and Government matters from the United States.
  • Recognized with Best Lawyers in America — Administrative Law (2026).

About Alexandre Moustardier: Alexandre Moustardier is an attorney based in the United States. The practice focuses on Environmental and Government.

Areas of practice

Practice areas handled by Alexandre Moustardier

Alexandre concentrates on environmental and government. Each area below outlines the kind of case Alexandre handles, typical outcomes to expect, and how the intake process starts.

Environmental cases nationwide

Alexandre takes environmental matters nationwide. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Alexandre agrees to represent you.

Government cases nationwide

Alexandre takes government matters nationwide. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Alexandre agrees to represent you.

Biography

About Alexandre Moustardier — Attorney of the U.S. environmental experience

Alexandre Moustardier is an attorney based in the United States. The practice focuses on Environmental and Government.

Alexandre Moustardier has developed an advisory and litigation activity, upstream and downstream, in environmental law and town planning / construction law with institutions, SMEs / SMIs, industrialists, developers, companies involved in particular in cement and quarrying, energy, agrifood, chemicals, waste treatment, etc.

Managing Partner of the firm ATMOS Avocats (formerly named Selarl Huglo Lepage & Associés until December 31, 2017), Alexandre Moustardier has developed, for twenty-five years, a specific expertise in industrial environment recognized by Best Layers in 2018.

Alexandre Moustardier holds a specialization in environmental law. He also holds a DEA in Environmental Law (Paris I - Panthéon-Sorbonne), and a DESS in Public International Law (Paris XI - Jean Monnet).

Former member of the National Bar Council and former member of the Council of the Paris Bar Association, he has been in charge of the management of the construction project of the Maison des Avocats on the site of the new civil court of Paris.

He is co-author of the latest editions of the Administrative Justice Code and the Environmental Code, he is also a member of the Editorial Board of the Bulletin of Industrial Environment Law.

Working with Alexandre on a environmental matter

Alexandre Moustardier has developed an advisory and litigation activity, upstream and downstream, in environmental law and town planning / construction law with institutions, SMEs / SMIs, industrialists, developers, companies involved in particular in cement and quarrying, energy, agrifood, chemicals, waste treatment, etc. Managing Partner of the firm ATMOS Avocats (formerly named Selarl Huglo…

Who Alexandre represents

Alexandre reviews new inquiries case-by-case for environmental and government matters in the United States.

Jurisdictions

Alexandre's state bar admissions

  • France, Paris

    ACTIVE

Recognition

Awards, publications, and recognition of Alexandre Moustardier

Alexandre has received 3 formal recognitions from bar associations, industry bodies, and peer-review services.

  • Best Lawyers in America — Administrative Law

    2026

  • Best Lawyers in America — Environmental Law

    2026

  • Best Lawyers in America — Public Law

    2026

Legal awards and honors

Best Lawyers in America — Administrative Law (2026). Best Lawyers in America — Environmental Law (2026). Best Lawyers in America — Public Law (2026).

Locations

Alexandre Moustardier's office in Paris

Alexandre's primary office is at 33 1 56 59 29 59, Paris, 75008. In-person meetings are by appointment; a phone intake usually comes first.

Main office

33 1 56 59 29 59

Paris 75008

Open in Google Maps

Client feedback

Client reviews of Alexandre Moustardier

Alexandre has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.

No reviews yet

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Hiring guide

How to hire Alexandre Moustardier — what to expect in your first consultation

Working with a new environmental attorney should feel structured. Here's how the first two conversations with Alexandre usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Alexandre charges for the initial consult. That fee is credited toward representation if you retain Alexandre's office.

What to bring to your first meeting

Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Alexandre will tell you what matters and what doesn't.

Questions to ask a environmental attorney in your state

A short list to run through before you commit: How many environmental matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

Fees & payment

Fees, payment methods, and consultation options for Alexandre

Alexandre discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in environmental practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every environmental matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Alexandre confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Alexandre's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many environmental practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about Alexandre Moustardier

  • How much does it cost to hire Alexandre for a environmental case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Alexandre walks through the likely range during the consult so there are no surprises.

  • Does Alexandre offer a free consultation?

    Alexandre charges for the initial consult; that fee is credited toward representation if you retain Alexandre's office. Some environmental attorneys offer free consults — check Alexandre's current terms during booking.

  • How long do environmental cases in this state typically take?

    Simple environmental matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Alexandre gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Alexandre take my case if I'm outside the area?

    Alexandre evaluates matters case by case. If the venue is outside Alexandre's regular jurisdictions, the intake call will confirm whether direct representation or a referral makes more sense.

  • What should I bring to my first meeting with Alexandre?

    Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Alexandre will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Alexandre accepting new environmental clients right now?

    Alexandre's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.