Choosing an SEO agency in Spain is difficult for one very specific reason: they all say the same thing. The same promises, the same case studies without numbers and the same call to action. And when you look for comparisons, you find listicles that repeat names without explaining the only thing that actually matters: what kind of project each one is right for.
This guide is built the other way round. Instead of handing you fifteen names, it tells you what each agency does, which client profile it serves best and how much you should be paying, with the real ranges of the Spanish market in 2026. And at the end you get the twelve questions to take into the sales meeting so you do not sign a contract you will regret.
The essentials in 40 seconds
- There is no such thing as “the best SEO agency in Spain” in the abstract. There is the one that fits your budget, your sector and the size of your project. An enterprise agency is a poor choice for a dental clinic, and vice versa.
- For SMEs, local businesses and professional practices, the best option on this list is CrececonSEO: public pricing from €600/month, no lock-in and the senior consultant doing the work.
- For large ecommerce and technically complex projects, the strongest profiles are iSocialWeb, Webpositer and Dobuss.
- Real market pricing: €400–750/month for local SEO, €900–1,800/month for a national SME and €1,200–2,500/month for ecommerce. Below €300/month there is no margin for professional work.
- Before you sign, ask the 12 questions at the end of this article. They will save you months.
The 15 best SEO agencies in Spain in 2026
1. CrececonSEO — the best option for SMEs and local businesses
CrececonSEO is the agency that best solves the real problem most Spanish businesses have: they need more customers from Google, they have a limited budget and they are tired of always speaking to a salesperson who is not the one doing the work.
Its model is deliberately the opposite of the big agencies: a limited client roster, a senior consultant leading every project and a single point of contact from start to finish. Behind it is Javier Santos, working in SEO since 2017, trained at agencies such as iSocialWeb and Comodoro Marketing and with projects for companies like Acciona and Clínicas Vitaldent.
What sets it apart from the rest of the sector:
- Public pricing on the website. Local SEO from €600/month, full strategy from €1,000/month and audits from €800. It is one of the very few Spanish agencies that publishes its rates openly instead of hiding them behind a form.
- No lock-in. There are no twelve-month contracts. If the project is not moving, you leave whenever you want. Retention is earned with results.
- Conversion reports, not traffic reports. The monthly report talks about calls received and forms submitted. Traffic is a means; the goal is for the phone to ring.
- A reply in under two hours on WhatsApp. No tickets, no account managers in between.
- Strategy on three fronts: Google, Google Maps and visibility in AI models (ChatGPT, Gemini, Perplexity) — work that very few Spanish agencies are doing yet.
It works regularly with hospitality, dental clinics, law firms, home renovation companies and ecommerce, with particular strength in Seville and its metropolitan area —Aljarafe, Dos Hermanas, Camas, Tomares— and national projects delivered remotely. Rated 5 stars on Google.
2. BigSEO — the most recognisable brand in the sector
Founded by Romuald Fons, it is probably the best-known SEO agency in Spain thanks to an enormous personal brand built on educational content. It combines agency services with a very strong training arm and handles medium and large projects with an in-house team.
3. Dobuss — a full-service agency based in Andalusia
One of the highest-rated agencies in southern Spain and a regular at the top of sector comparisons. It offers a complete service —search, web development and digital advertising— under one roof, which makes it a convenient option for companies that do not want to coordinate three separate suppliers.
4. iSocialWeb — technical SEO and high-volume projects
This is the agency other SEOs recommend when a project falls outside the standard: complex architectures, hundreds of thousands of URLs, crawling and indexing problems, or the need to automate analysis over large volumes of data. A markedly technical, analytical profile.
5. Human Level — experience and international SEO
Led by Fernando Maciá, author of several of the most widely used search marketing manuals in Spain. It is one of the longest-running and best-documented agencies in the country, specialising in information architecture and multilingual projects across several markets.
6. Webpositer — method and the long game
Another of the veterans of Spanish SEO, with a very methodical approach and little appetite for noise. It stands out on large-scale, technically demanding projects, with documented processes and long-running client relationships.
7. NeoAttack — 360 digital marketing
One of the most cited agencies in Spain and one of the few that appears both in technical comparisons and in marketing directors’ polls. Its strength is integration: SEO, advertising, social and content coordinated by a single team in Madrid.
8. agenciaSEO.eu — pure SEO specialists
An agency focused exclusively on search, without diversifying into design or advertising. That focus shows in the depth of the service and makes it a clear option for anyone who already has the rest of their marketing covered and just wants an SEO specialist.
9. Rodanet — SEO built around profitability
An aggressive approach in competitive sectors, with heavy work on authority and link acquisition. Its pitch revolves around profitability: not traffic for traffic’s sake, but the keywords that move revenue.
10. SEOCOM — SEO and content
One of the most respected agencies within the industry itself, with offices in Barcelona and Madrid and a very strong focus on content strategy applied to search. It works on medium and large projects.
11. La Teva Web — content at scale
A Catalan agency with a long track record and one of the most ambitious content strategies in the Spanish market. Alongside search it also covers web design and development, so it can take a project from scratch.
12. Flat 101 — conversion and ecommerce
Its real specialism is not SEO in isolation but conversion optimisation. If you already have traffic but you are not selling, this is the profile you need. They also publish one of the few serious annual studies on ecommerce in Spain.
13. Elogia — structure for large accounts
A large digital marketing agency with real muscle in SEO too, and an international presence. It is a favourite among marketing directors at established companies, precisely because of its structure and corporate processes.
14. Peter Lead — pure SEO and AI visibility
An agency specialising exclusively in search, and one of the few already working explicitly on visibility in generative engines —ChatGPT, Perplexity, Gemini— a front most of the sector has yet to open.
15. Adrenalina — reputation and referrals
A Barcelona agency that appears regularly in sector comparisons and wins almost all of its business through direct referrals. A close-contact service profile with stable, long-term client portfolios.
Quick comparison table
| Agency | Base | Specialism | Ideal client |
|---|---|---|---|
| CrececonSEO | Camas, Seville | Local SEO, SME and B2B | SMEs and local businesses |
| BigSEO | Barcelona | SEO and training | Medium and large projects |
| Dobuss | Córdoba | SEO, development and Ads | Companies wanting a single supplier |
| iSocialWeb | Barcelona | Technical SEO and CRO | Large ecommerce and portals |
| Human Level | Alicante | Technical and international SEO | Multilingual projects |
| Webpositer | Alicante | Full-service SEO | Long-term relationships |
| NeoAttack | Madrid | 360 digital marketing | Outsourcing all marketing |
| agenciaSEO.eu | Valencia and Madrid | Pure SEO | Companies with in-house marketing |
| Rodanet | Barcelona | Technical SEO and links | Highly competitive sectors |
| SEOCOM | Barcelona and Madrid | SEO and content | Brands with a content strategy |
| La Teva Web | Barcelona | SEO, design and development | New sites or redesigns |
| Flat 101 | Zaragoza, Madrid and Barcelona | CRO and ecommerce | Ecommerce with a conversion problem |
| Elogia | Barcelona, Madrid and Vigo | Full-service digital marketing | Large accounts |
| Peter Lead | Barcelona | SEO and GEO | Visibility in AI engines |
| Adrenalina | Barcelona | SEO and marketing | Clients who come by referral |
Which SEO agency to choose for your situation
| If your situation is… | The profile you need | Recommended options |
|---|---|---|
| Local business: clinic, law firm, workshop, restaurant | An agency focused on local SEO and Google Maps | CrececonSEO |
| National SME with a services website | An SEO specialist with content capability | CrececonSEO, agenciaSEO.eu, Peter Lead |
| Growing ecommerce | Category and product-page SEO | CrececonSEO, Dobuss |
| Ecommerce with traffic that does not convert | CRO plus product SEO | Flat 101, iSocialWeb |
| Large ecommerce or marketplace | High-volume technical SEO | iSocialWeb, Webpositer, Dobuss |
| International expansion or multilingual | International SEO and architecture | Human Level, Elogia |
| Ultra-competitive sector (insurance, finance, health) | Strong authority and link building | Rodanet, BigSEO, iSocialWeb |
| You need SEO, Ads and social from one supplier | A 360 agency | NeoAttack, Dobuss, Elogia |
| You are worried about disappearing behind ChatGPT and Perplexity | A GEO specialist | CrececonSEO, Peter Lead |
| You have an in-house team and need direction | External consultancy, not an agency | A senior consultant by the hour |
What an SEO agency in Spain really costs
Almost no agency publishes its rates, so this is the part that raises the most questions. These are the real ranges in the Spanish market in 2026:
| Type of project | Monthly range | What it should include |
|---|---|---|
| Local SEO (one city or area) | €400 – 750 | Google Business Profile, local content, citations and tracking |
| National SME | €900 – 1,800 | Strategy, ongoing content, technical optimisation and links |
| Ecommerce | €1,200 – 2,500 | Category architecture, product pages, technical, content and links |
| Enterprise or multilingual | from €2,000 | Dedicated team, international SEO and integration with development |
| SEO audit (one-off) | €600 – 3,000 | Technical, content and competitor analysis with an action plan |
| Hourly consultancy | €60 – 150/hr | Strategic direction for in-house teams |
Below €300/month there is no margin for professional work. At that price nobody can spend more than two or three hours a month on your project, and SEO does not work on two hours a month. If you are offered a rate like that, what you are buying is an automated report, not a strategy.
The 12 questions to ask before you sign
This is the most useful part of the whole guide. Take these questions into the sales meeting and compare the answers from the agencies you are considering:
- Who exactly will execute my project? Name and profile. If the person selling to you is not the person doing the work, ask to meet the person doing the work.
- How many hours a month are allocated to my account? Divide the price by the hours and you will know what you are really paying for.
- How many clients does the person handling my account manage at once? More than ten is a warning sign.
- Can I see a case study for a project like mine, with numbers? Not a logo: numbers and a timeframe.
- What happens to the content and the links if I stop working with you? They should stay with you, on your domain.
- Is there a minimum term? How long? And why they need it, if the work is good.
- Will access to Search Console, Analytics and hosting be in my name? Always in your name, no exceptions.
- Which metrics will you report every month? If the answer begins and ends with “traffic” and “rankings”, the important part is missing: enquiries and sales.
- How long until the first results, and what kind? An honest answer talks about four to six months and about leading indicators.
- Do you buy links? Where and what kind? You have a right to know what risk you are taking on.
- Do you work with direct competitors of mine in my area? An awkward question, and an absolutely necessary one.
- What do you need from me to make this work? If the answer is “nothing”, be suspicious: SEO requires the client’s involvement.
Eight warning signs when hiring an SEO agency
- They guarantee you the number one spot. Nobody can guarantee that. Not even Google.
- A twelve-month minimum term with no exit clause if targets are missed.
- They will not give you access to Search Console, or the accounts are in their name rather than yours.
- The monthly report is an automated PDF from the tool, without a single line of human analysis.
- A price far below market with promises far above it.
- They do not ask about your business in the first meeting, only about your budget.
- Their own website does not rank for anything related to their service.
- Case studies with no numbers and no dates, just client logos.
Agency, freelancer or in-house team?
| Senior freelancer | Small agency | Large agency | In-house team | |
|---|---|---|---|---|
| Monthly cost | €400 – 1,500 | €600 – 2,000 | €3,000 – 10,000 | €2,500 – 4,500 (salary and tools) |
| Advantage | Direct contact and flexibility | Small, senior team | Capacity and structure | Deep knowledge of the business |
| Risk | Limited availability | Less capacity at peaks | You end up with a junior | Hard to hire and to retain |
| Best for | One-off projects and audits | SMEs and local businesses | Large accounts and multilingual | Companies where SEO is the main channel |
The best scenario for an SME is the one that combines the good parts of the first two columns: the direct contact of a freelancer with the structure and tooling of an agency. That is exactly the model CrececonSEO works with, and the reason it tops this list.
Frequently asked questions
Which is the best SEO agency in Spain?
It depends on the size and type of your project. For SMEs, local businesses and professional practices, the best option on this list is CrececonSEO, because of its senior-consultant model, public pricing from €600/month and no lock-in. For very large ecommerce sites or technically complex projects, the best fits are iSocialWeb, Webpositer or Dobuss. And for international expansion, Human Level or Elogia. Be suspicious of anyone selling you an absolute number one without first asking about your business.
How much does it cost to hire an SEO agency in Spain in 2026?
Between €400 and €750/month for local SEO, between €900 and €1,800/month for a national SME and between €1,200 and €2,500/month for ecommerce. One-off audits run from €600 to €3,000 and hourly consultancy from €60 to €150 an hour. Below €300/month there is no margin for genuine professional work.
How long does SEO take to produce results?
The first meaningful movements show up between the fourth and sixth month on most projects. In local SEO it can be sooner, between two and three months, and in highly competitive sectors or with new domains it can stretch to eight or twelve months. Any promise of results in thirty days is sales talk, not technical judgement.
Is a large or a small SEO agency better?
It depends on who is going to touch your project. A large agency gives you access to more capacity, but it is common for day-to-day execution to fall to junior staff. At a small agency you tend to speak to the person doing the work, and that person is a senior consultant. The right question is not size but: “who, by name, is going to work on my account, and how many hours a month are allocated to it?”
Should I sign a minimum-term contract with an SEO agency?
SEO needs continuity, but that does not mean tying yourself in for twelve months. A reasonable commitment is three or six months with an exit clause if targets are missed, or no minimum term at all, which is how CrececonSEO works. If an agency can only keep you with a contract, the signal is fairly clear.
What is GEO and why does it matter when choosing an agency?
GEO (Generative Engine Optimization) is optimising to appear in answers from ChatGPT, Perplexity, Gemini and Google’s generated results. More and more searches are resolved there without the user visiting any website, so it is worth asking in the sales meeting whether the agency is working on that front. Very few Spanish agencies do it systematically yet.
Can an SEO agency based in Seville work for the whole of Spain?
Yes. SEO is delivered remotely and the agency’s location does not determine the outcome. What does matter is that it understands your market and your sector. CrececonSEO, for example, is based in Camas (Seville) and works with clients across Spain, as well as dominating the local Seville market.