The verdict in three sentences
In Luxembourg, a prime buyer often arrives from abroad, relocating to Kirchberg or acting for a family office, and now puts the question to an AI assistant before opening a listings portal. SEO remains the base that captures Google searches for a neighbourhood or property type, while AEO/GEO works on how AI assistants like ChatGPT describe your agency when someone asks for advice. For an established agency, the real question is not one or the other but how to split the budget and how to measure, with a dated record of the answers to the same questions.
What your clients ask, on Google and to AI assistants
On Google, queries stay short and geographic: "house for sale Belair", "luxury apartment Limpertsberg", "villa Strassen garden". To AI assistants, questions are long and conversational: "I am joining a bank in Kirchberg in September, which agency knows Merl and Cents well for a family with two children?", "Which Luxembourg agencies handle off-market properties discreetly?", "Should I use an agency to sell a 2.5 million house in Bertrange?". The answer draws on what is published and consistent about you: genuine neighbourhood pages, agent profiles, local press coverage, reviews and business listings, in French, German, Luxembourgish and English.
The framework matters. Working as an estate agent in Luxembourg requires a business permit and carries anti-money laundering obligations; prospect data falls under the GDPR, supervised by the CNPD. Published listings must match real mandates, with photos you hold the rights to. Never invent a sale, a price achieved or a ranking. This is not legal advice.
SEO and AEO/GEO, side by side
Ranges from typical agency quotes and public agency rate pages, 2026 ballpark.
| Criterion | SEO | AEO/GEO |
|---|---|---|
| What it targets | Google positions on neighbourhoods and property types | Mention and description of the agency in AI answers |
| Time to effect | 4 to 9 months as a rule | Variable, first changes often observed within 2 to 6 months |
| Market budget | 1,500 to 5,000 EUR per month | 2,000 to 6,000 EUR per month, or a 2,500 to 8,000 EUR diagnostic |
| Metrics | Impressions, clicks, valuation requests, calls | Presence and accuracy across a dated question panel |
| Main strength | Measurable traffic, seller valuation requests | Credibility with international buyers |
| Main risk | Reliance on a few queries | Answers that shift from month to month |
| Languages to cover | FR, DE, EN, LB depending on queries | Same languages, consistent information across them |
Where should the budget go in your situation?
| Situation | Suggested priority | Indicative split |
|---|---|---|
| New agency, few pages | SEO first, neighbourhood and valuation pages | 80% SEO, 20% AEO/GEO |
| Brand established for 15 years | Balance, your track record feeds AI answers | 55% SEO, 45% AEO/GEO |
| High share of international buyers | Stronger AEO/GEO in English and German | 45% SEO, 55% AEO/GEO |
| Mostly off-market business | Agent profiles, press, expertise content | 40% SEO, 60% AEO/GEO |
| Budget under 2,000 EUR per month | Local SEO and business listings | 100% SEO in year one |
| Site redesign under way | Protected SEO migration, AEO/GEO afterwards | 90% SEO for 3 months |
How to measure without fooling yourself
On the SEO side, Search Console and your analytics tools give impressions and clicks by neighbourhood; the real metric remains the number of valuation requests and qualified viewings, tracked in your CRM with their source. On the AEO/GEO side, there is no official ranking: the only honest measure is a dated record of the answers to the same panel of 30 to 60 questions, in each language, repeated every month. It notes whether the agency is mentioned, whether the description is accurate (neighbourhoods, specialities, languages spoken) and which sources seem to be drawn on. No provider can promise that an AI assistant will mention you.
A serious diagnostic covers the state of the site and neighbourhood pages, the consistency of your public information across the four languages, what AI assistants say today about you and your competitors, and a proposed budget split. It is on quote: request a free quote.
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Illustrative example: Maison Belair Immobilier, six agents, properties from 1.5 to 4 million euros. Annual visibility budget: 30,000 EUR, split into 18,000 EUR of SEO and 12,000 EUR of AEO/GEO. Assuming fees of 3% before VAT, one extra mandate on a 2,000,000 EUR house brings in 60,000 EUR before VAT, twice the annual budget. The January record shows the agency mentioned in 6 answers out of 40; the aim is to track the change every month, with no promise of a result.
FAQ
Should we stop SEO and switch to AEO/GEO?
No: for most agencies, SEO remains the main source of valuation requests. A split of 55% SEO and 45% AEO/GEO is a common starting point for an established brand.
How much does an AEO/GEO diagnostic cost in Luxembourg?
As a 2026 ballpark, 2,500 to 8,000 EUR depending on the number of languages and questions tested. Kolonell's work is on quote.
How do we know whether AI assistants talk about our agency?
By recording each month the answers to the same panel of 30 to 60 questions, with a date on every record. Without that baseline, no progress can be shown.
Can we feature off-market properties?
Yes, in general terms and with the sellers' consent, without addresses or identifying details. Discretion is part of what buyers of properties above 2 million are looking for.
How many languages should we publish in?
In Luxembourg, French, German and English reach most buyers, with Luxembourgish strengthening local roots. Information that differs between two languages hurts both channels.
Find out how AI assistants describe your firm. A dated record of what AI assistants say about your agency and your competitors, neighbourhood by neighbourhood and language by language. Request a diagnostic quote: reply within 48 hours.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
