Why Us · Transparency · The Company
An agency that asks for your Google visibility owes you a straight answer about who it is.
Here is that answer: who founded this company, where the expertise comes from, and exactly how the work is done — without evasion.
Éric St-Cyr — Founder & CEO, ProStar SEO
Éric St-Cyr, and a team trained on the web’s hardest markets.
My name is Éric St-Cyr. I am a Quebecer and the founder of ProStar SEO. For more than a decade, our team has practiced search engine optimization for over a hundred clients across North America and Europe. realestateseo.ai is the member of that family built entirely for the real estate industry. I sign this page — but every result is a team effort.
Our method was shaped where competition forgives nothing: cannabis and CBD, online gambling, cosmetic surgery. Industries where Google Ads is banned or heavily restricted, where organic search is the only real acquisition channel, and where a lost position costs tens of thousands in revenue. In markets like those, nobody survives on hunches — you survive by testing, measuring, and executing better than competitors spending seven-figure budgets. That is the school that trained the specialists, writers, and developers who now work on real estate SEO.
A story of reinvention
“In his fifties, with everything gone, he started over in search engine optimization — and built ProStar from the ground up into a family of specialized agencies.”
Éric was born in a small village near Trois-Rivières, Québec. His first career reached the highest levels of international finance — first with a Canadian bank, then with a firm in the Cayman Islands — a chapter that ended in a very public collapse and cost him nearly everything. He tells that story openly in his 2016 memoir, À l’ombre du soleil, an account of high finance, offshore banking, and a hard fall that reads like a thriller.
What matters is what came next. That lived experience of losing everything and rebuilding is exactly why the work is done this way: no shortcuts, no false promises, and a focus on results that can be measured. Éric owns the rights to the book and would rather people read it than pay for it — email him for a free copy and he will send it your way.
SEO treated as engineering, not fortune-telling.
We believe one thing plainly: SEO is an engineering discipline. Every recommendation rests on a test or a measured data point. We analyze the pages that already dominate the results for your keyword — their contextual density, their entities, their architecture, their links — then build pages calibrated to beat those benchmarks, and measure what happens. When a hypothesis fails, we say so and adjust. When it works, we document it and repeat it. That loop is what separates measured SEO from opinion — and it applies to Google and to the answer engines (ChatGPT, Claude, Perplexity, and Google AI Overviews) reshaping visibility now.
Contextual Density, the founder’s method
Éric created Contextual Density: script the contextual density of the pages already ranking for a keyword, then engineer a page that covers the topic roughly ten percent more thoroughly — a standard validated page by page. Every service and speciality page on this site was built to that standard.
Benchmarked against your real competitors
Not generic checklists — the actual pages beating you today. Their terms, their entities, their structure, their links. Your page is built to exceed those specific benchmarks, not an abstract ideal.
Optimized for Google and the answer engines
Buyers increasingly ask ChatGPT, Perplexity, and AI Overviews who to trust. Being the brand the model names is valuable ground — our content and technical work run on that same standard, and most of your competitors have not started.
Why a real-estate-only agency?
Real estate search is one of the harder categories on the web. Portals with billion-dollar budgets own the head terms, the map pack decides who gets called, IDX feeds create technical problems most agencies have never seen, and intent differs completely between an agent farming a neighborhood, an investor hunting motivated sellers, and a developer pre-selling a tower. That combination rewards specialists and frustrates generalists — which is the whole reason a dedicated real estate SEO agency is worth having.
The AI angle matters too. As buyers and sellers increasingly ask assistants who to trust, being the professional the model names becomes valuable ground. We optimize for the answer engines, not only the search box — and most of the industry has not started.
The ProStar family of agencies
realestateseo.ai is one of several niche agencies Éric leads, each serving a demanding, competitive vertical. Across those brands, the team serves more than 100 clients — and their largest client earns over 10 million organic clicks a month, the kind of scale only compounding, well-engineered SEO produces.
ProStar SEO
The flagship, multi-industry agency — the team and the method behind every brand.
Agence SEO Paris
French-market SEO built on Contextual Density, for the Paris and francophone markets.
LegalSEO.agency
Law firm SEO — bar-compliant content and signed-case reporting for attorneys.
CannabisSEO.ai
Cannabis, CBD, and dispensary SEO in the most ad-restricted market on the web.
Plastic Surgery SEO
Search visibility for cosmetic surgeons and clinics.
Med SEO
Healthcare and medical practice SEO in YMYL territory.
Dentist SEO
Dental and orthodontic practices — local and clinical search.
SEO for Contractors
Home services and construction — the trades that live on the map pack.
What you can expect from us
We never promise the #1 position
Anyone who guarantees it is not being straight with you — no one controls Google’s algorithm. What we promise is a method: benchmarked competitive analysis, documented deliverables, tracked indicators, and reports that show what is improving and what still needs work.
No long-term contracts, ever
We work month-to-month. Clients stay because the results convince them, not because a clause holds them. After more than a decade and a hundred clients, that policy remains our best proof of trust.
You understand everything we do
SEO should never feel like a black box. Every action taken on your site is explained — what it is, why it was taken, and what it is expected to move. Reporting shows inquiries, calls, and closings in plain English, not vanity metrics.
Real estate only, on this brand
This agency serves real estate exclusively: agents, brokers, investors, developers, property managers, and real estate lawyers. Your strategist is not splitting attention between your market and someone else’s.
Common questions
Who is behind realestateseo.ai?
Éric St-Cyr, founder of ProStar SEO, and a team of SEO specialists, writers, and developers who have served more than 100 clients across North America and Europe. This brand is the member of the ProStar family built entirely for the real estate industry.
What is Contextual Density?
The measured, benchmark-driven methodology Éric created and every ProStar agency uses. Instead of guessing at "quality," we script the contextual density of the pages already ranking for your keyword — their terms, entities, and architecture — then engineer your page to cover the topic roughly ten percent more thoroughly. It is SEO treated as engineering, validated page by page.
Why a real-estate-only agency?
Real estate search is its own discipline: IDX feeds, listing pages, map pack warfare, portal competition, and wildly different intent across agents, investors, and developers. Generalist agencies learn on your budget. A specialist applies a method already proven in harder markets — cannabis, gambling, cosmetic surgery — where organic search is the only channel and mistakes cost real money.
Do you guarantee rankings?
No — and anyone who does is not being honest, because no one controls Google’s algorithm. We guarantee a measured method: benchmarked analysis, documented work, month-to-month engagements, and reporting tied to real inquiries and closings.
Who will actually work on my account?
One strategist owns your account end to end — no hand-offs, no junior rotation. The wider team (writers, developers, link builders) supports the work, but you always know who is responsible, and you can reach them directly.
Talk strategy with Éric
Book a free 30-minute call and get an honest read on where your real estate site ranks today — and what it would take to win. Or start with the free instant SEO audit and bring the report.