Erwan Bargain

Property valuation · due diligence · web, data and GIS tools

What it's worth. What could go wrong. And the tools to check both.

For 15 years I have valued property for notaries, courts and lenders in France. Since 2024 I also build the web, data and map tools that make that work faster and easier to verify. I am moving to Canada and looking for my next role in property assessment, real property, or web and data teams.

See my work LinkedIn profile
Two skill sets, one way of working

I check the facts, then I make the checking repeatable

Every report I write is tested by the other side and by the judge, so every figure is explained. I build software the same way: sources visible, dates visible, limits written down.

Property valuation and due diligence

  • Homes, commercial and rental property, land and development sites.
  • Site inspections and renovation cost estimates with contractors and surveyors.
  • Title, easements, rights of way, mortgages, zoning, natural hazards.
  • Loss in value and compensation in property disputes.
  • Loan files for banks: loan-to-value, prudent value.
1,500+valuations
12 yrsin notaries' offices
20rental units managed

Web, data and GIS tools

  • Drupal 11 module with tests and continuous integration (live demo below).
  • Public-data atlas built on a city's GIS services: parcels, assessments, zoning.
  • Valuation, tax and grant calculators with sourced, dated data.
  • About 50 client websites (WordPress, PrestaShop, Shopify, Joomla, Drupal 7).
  • Built with AI coding assistants; requirements, checks and delivery stay mine.
400+adults trained in SEO and e-commerce
50websites
Selected work

Live demos and projects

Independent projects built on public data. Each one shows its sources and its limits.

Featured · Drupal 11

Legacy Site Sunset Toolkit — a GNWT.ca case study

In 2026 GNWT.ca replaced more than ten department websites. This module finds the new page for every old URL, lets editors approve each match, and answers the old addresses with the right redirect. First run: 7,155 legacy URLs from the health site, half matched automatically.

Drupal 11.4 · PHP 8.5 · Views · Migrate and Batch API · Drush · tests and CI/CD

sunset.erwanbargain.com → Code, tests and deployment pipeline on GitHub →
GIS · Yellowknife

Northline — Yellowknife Atlas

A public-data atlas of Yellowknife: 6,118 land parcels, tax assessments, zoning, easements and municipal assets from 57 open datasets, each with its source and date.

React · TypeScript · MapLibre · ArcGIS REST · Python

yellowknife-atlas.vercel.app →
Data platform · Luxembourg

LPVI valuation data platform

As a member of the data committee of the Luxembourg Property Valuation Institute, I built its valuation data platform: public sources plus sales shared by members.

lpvi.vercel.app (demo) →
Valuation tools

Tevaxia.lu

Valuation and investment tools for property professionals in Luxembourg: income and DCF valuation, lending value, loan-to-value, document extraction.

tevaxia.lu →
Calculators · open source

NotariaPrime.fr

Free calculators for French property and estate work: taxes and fees before closing, capital gains tax, reading amounts from deeds.

notariaprime.fr →
Grants · Europe and Canada

Embuild.eu

Energy-renovation grants across Europe and Canada, with an assistant that answers only from sourced, dated grant records.

embuild.eu →
My valuation practice

Bargain Expertise

Property valuation reports for courts, lawyers, notaries, banks and owners in Brittany, with public city-data pages and maps.

bargain-expertise.fr →
Experience

Fifteen years of property files

  1. 2019 – present

    Property valuation expert

    Bargain Expertise, Brittany · registered with the Rennes Court of Appeal

    • Value homes, commercial and rental property, land and development projects after a site visit.
    • Measure loss in value in property disputes; reports read by both parties and the judge.
    • Follow European Valuation Standards, including loan-to-value and prudent value.
  2. Mar – Oct 2025

    Real estate negotiator and appraiser

    Koytcha Notaires, Saint-Denis, Réunion

    • Valued and sold property; prepared the valuation part of loan files; took cyclone, flood and erosion risks into account.
  3. 2015 – 2024

    Real estate negotiator and appraiser

    Notaires Pays Bigouden Littoral Sud, Pont-l'Abbé

    • 150+ valuations a year after a site visit; about half of the office's valuations.
    • Checked title, easements, mortgages, land records and zoning before sales and loans.
    • Started the office's YouTube channel (100,000+ views). Elected staff representative, 2020–2024.
  4. 2014 – 2022

    Digital consultant and trainer

    Internetbusiness.fr, freelance · Formaouest

    • Built and improved about 50 client websites; taught SEO and e-commerce to 400+ working adults.
  5. 2011 – 2015

    Accounting and deed-tax officer

    Le Pape & Lacourt, Notaires

    • Taxes and fees on every deed; daily reconciliation of client trust accounts.
  6. 2009 – present

    Managing partner, family property company

    SCI LFG IMM HERO, Brittany

    • Bought, financed, renovated and let about 20 units; average yield 6–8%.
  7. 2007 – 2010

    Technical support, escalation level

    Blizzard Entertainment, Cork, Ireland

    • Three and a half years working full-time in English; logs, bug reports to development and QA.
  8. 2005 – 2006

    Banking advisor, mortgage and consumer credit

    CMB, LCL, BPVF, Meilleurtaux · Île-de-France

    • Assessed loan applications: borrowing capacity, debt ratios, income and asset documents; built loan and refinancing files.
Education and credentials

Law, finance and valuation

  • Law degree and postgraduate business lawUniversité de Bretagne Occidentale, 2002–2003. WES: Canadian four-year bachelor's degree and one-year postgraduate diploma.
  • Finance and wealth managementBrest Business School, 2004.
  • Notarial practice and business advisoryUniversité Paris II Panthéon-Assas, 2023.
  • Chartered Appraiser (É.A.), partial equivalenceOrdre des évaluateurs agréés du Québec, 2024.
  • REV and TRV (TEGOVA)Recognised European Valuer and TEGOVA Residential Valuer, 2017–2026.
Contact

Let's talk

I can do video interviews and practical tests, and relocate quickly once my permanent residence is confirmed.

contact@erwanbargain.com LinkedIn profile