Madrid-based Google Premier Partner with specialist SEO departments and a Bilbao office
About SER o no SER
SER o no SER is a Spanish digital marketing agency that has been operating since 2007. Its registered address is Calle de O'Donnell 18 in Madrid, and it runs delegations in Bilbao and Barcelona. The Bilbao office is led by its director, Fernando Herrero. Ignacio Lafuente was general director in 2023, and Irene Fernández was directora general in 2025. The company had revenue of 2.8 million euros in 2022, up 12 percent on the year before, and a staff of more than 50 at that time. The team now has more than 40.
The agency centres on SEO, Google Ads and social media advertising, aiming to run all channels under one plan. SEO is handled by separate departments. Local SEO deals with business listings, maps, reviews and reputation. Content SEO covers site architecture, search intent and multilingual copy. Indexing SEO looks after crawling, speed and structured data. An AI SEO team works on visibility in tools such as ChatGPT, Gemini and Claude. A cross-cutting analytics function links this work to qualified leads, cost per conversion and return on investment, and the firm sells a combined SEO Total package.
The company has been a Google Premier Partner since 2022, and it was included again in the 2025 Premier list, which covers roughly the top 3 percent of Spanish partner agencies. The status gives it direct Google support, early market information and promotional Google Ads credit for new clients. It does not tie clients to minimum-term contracts.
Health businesses appear among its client sectors, alongside industrial B2B firms, retail, professional services and distribution. No dental clinic is a named client. More than 2,000 Spanish businesses have used its services, and it signed more than 500 new clients in 2022 alone, so most work is with small and mid-sized firms.
For a dental clinic, the most relevant parts are the local SEO team for Google Business Profile, reviews and map rankings, paired with Google Ads for patients searching right now. Entry points are low, with a minimum budget under $1,000 and an average rate near $50 an hour. Sortlist reviewers rate the firm 4.9 and mention steady communication and clear reports, while it has no Trustpilot reviews. The agency fits Spanish clinics in Madrid, the Basque Country or Catalonia that want one Google-certified partner covering organic and paid search.
SER o no SER's Website
SER o no SER at a Glance
| Founded | 2007 |
|---|---|
| Team size | 40-50+ employees |
| Headquarters | Madrid, Community of Madrid, Spain |
| Other offices | Bilbao, Barcelona |
| Leadership | Irene Fernández (Directora General, 2025); Ignacio Lafuente (General Director, 2023); Fernando Herrero (Director, Bilbao office) |
| Languages | Spanish |
| Pricing | No prices published. The minimum budget is under $1,000, and the average rate is about $50 per hour. Promotional Google Ads credit offered to new clients. |
| Contracts & reporting | Does not use lock-in contracts (no permanencia). Reporting through a dedicated analytics function; regular reports. |
| Tools & partnerships | Google Premier Partner (2022, 2023, 2025); Google Ads |
Dental Marketing Services
- Local SEO (Google Business Profile, maps, reviews, reputation)
- content SEO and multilingual content
- technical and indexing SEO
- AI search optimisation (GEO)
- Google Ads
- Facebook and Instagram ads
- social media marketing
- web design
- analytics and reporting
Why Dentists Choose SER o no SER
- Bilbao office led by a dedicated delegation director
- Google Premier Partner since 2022
- Specialist teams for local SEO, content, technical SEO and GEO
- Experience with health-sector clients
- Clear reporting praised by clients
Key Strengths
- Local SEO programs that help a practice appear in nearby patient searches
- Google Ads campaigns tuned to cost per patient inquiry and return
- Content and technical SEO that strengthen treatment pages over time
- AI search optimization so practices surface in generative answer engines
Awards & Recognition
- Google Premier Partner 2022
- Google Partner Premier list 2023
- Google Partner Premier list 2025
How the DSA Score Breaks Down
Points earned: 63.7 of 100 (profile 61 × 0.8 + client feedback 14.9). DSA Score: 93/100
What Clients Say About SER o no SER
- 4 on Google
Clients Most Often Praise
- Communication & responsiveness 2
- Higher Google Maps & local rankings 2
- Clear reporting & honesty 2
In ShortClients praise constant communication, clear reports, well-optimized ad campaigns and an attentive, responsive team that delivers SEO results.
Camping King's praised their SEO and SEM management, constant communication, optimized ad campaigns and clear reports.
See it on designrush.comZOEA reported strong results across the group's companies and called the team professional and helpful.
See it on designrush.comLuis Burillo praised the team's dedication and friendly service, naming several account staff.
See it on designrush.comShow 1 more client review
- Jaime Anton described an attentive, responsive team with good results and frequent SEO updates. Google, 7 Jul 2026
Where SER o no SER Is Listed
Questions Dentists Ask About SER o no SER
Does SER o no SER have dental clients?
No dental clinic is a named client. Health is among the sectors they serve, along with industrial, retail and professional services firms.
Is the agency based in Bilbao?
Their head office is in Madrid on Calle de O'Donnell, and they run delegations in Bilbao and Barcelona. The Bilbao office is led by director Fernando Herrero.
Do they require a long contract?
No. They do not use lock-in contracts. New clients can also receive promotional Google Ads credit through their Premier Partner status.
How do they handle local SEO?
They have a dedicated local SEO department that manages business listings, maps, reviews and online reputation for specific locations. Separate teams handle content, technical SEO and AI search.
How large is the company?
They had 2.8 million euros in revenue in 2022 and more than 50 staff at that time. Over 2,000 Spanish businesses have used their services.
Reviews of SER o no SER
No reviews on this site yet. Have you worked with SER o no SER? Your review helps other dentists choose.