Zazume Raises €2.5M to Scale AI Rental Platform

Barcelona's Zazume Raises €2.5 Million to Scale Its AI-Powered Rental Management Platform Across Spain

Spain's residential rental market has long operated on outdated infrastructure, fragmented processes, and an over-reliance on traditional real estate agencies that simply were never built with rentals in mind. For years, the gap between what landlords needed and what the market was actually delivering continued to widen — and no one was doing much about it. That is, until Zazume came along. The Barcelona-based PropTech startup has just announced the close of a new investment round worth €2.5 million, and the message it sends to the European real estate technology space is hard to miss: AI-driven rental management is not a future concept anymore. It is happening right now, right in the heart of Southern Europe, and it is already beginning to reshape how properties are managed, how tenants are served, and how landlords receive their income.

The funding round was led by London-based venture capital firm Nordstar and Spanish family office GTV Capital, the latter making its very first entry into Zazume's shareholder structure. Existing backers also participated, with Sabadell Venture Capital and a number of other family offices joining through the conversion of previously contributed capital. With this round, Zazume's total fundraising since the company was founded has now reached €7.8 million — a figure that reflects not just investor confidence in the team, but also a clear recognition that the Spanish rental market represents one of the most significant untapped opportunities in European real estate technology today.

A Barcelona Startup Redefining the Way Spain Rents

Zazume was founded in 2021 by two individuals who brought together complementary but powerful backgrounds. Jeroen Merchiers, who previously served as the Managing Director of Airbnb for the EMEA region, understood better than most what it meant to operate at scale in the short-term rental space. His co-founder, Guillermo Ceballos, had already proven himself as a serial entrepreneur with ventures like GymForLess and Andjoy under his belt. Together, they identified something that larger players in the real estate world had largely overlooked: the long and medium-term residential rental segment in Spain was severely underserved, fragmented, and ripe for transformation.

The platform that Zazume has built is not a simple property listing tool or a basic tenant screening service. It is a full-stack digital infrastructure that handles the entire rental lifecycle — from the moment a landlord decides to list a property to the moment a tenant renews or exits a lease. Zazume's services span guaranteed rent, tenant sourcing and verification, non-payment insurance, rent advances, and real-time rental management software that gives property owners visibility into their portfolios like they have never had before. For tenants, the platform facilitates deposit financing and simplifies the payment process. For real estate agents and agencies, it provides tools that can be seamlessly integrated with their existing systems, making the leap to a more digital way of working far less painful than it might otherwise seem.

Although the company's headquarters are in Barcelona, its primary commercial focus is currently in Madrid — a city where the rental market operates at a scale and pace that perfectly suits Zazume's model. The company currently manages 3,500 properties across Spain, and its operational efficiency is something worth noting. Thanks to the intelligence built into its platform, a single member of the Zazume team is capable of managing up to 500 properties in a single day — a figure that would be completely unthinkable in any traditional rental agency model.

What the Funding Round Means for Zazume's Growth Strategy

The way Zazume plans to deploy this €2.5 million says a great deal about how the company thinks strategically. More than half of the capital — over 50% of the entire round — has been earmarked for the acquisition of property management portfolios from smaller real estate agencies operating in Spain's provincial capitals. This is not a vague expansion plan. It is a precise, deliberate consolidation strategy that targets a very specific type of market participant: the smaller, traditional agency that has spent years building a rental portfolio but now lacks the technological tools, the staff capacity, or the financial firepower to genuinely optimize it.

By acquiring these portfolios, Zazume is doing something clever. Rather than spending years trying to convince individual landlords to switch platforms one by one, the company is going directly to the source — the agencies that already hold relationships with hundreds of property owners — and making it possible for those agencies to monetise their rental portfolios in a way they simply could not do on their own. The remaining portion of the investment round will be directed towards marketing and sales efforts, helping Zazume deepen its brand presence across key Spanish markets as it grows its managed property base.

Jeroen Merchiers, CEO and co-founder of Zazume, spoke candidly about the opportunity the company is moving into. "We have identified a huge opportunity to rapidly drive the company forward and help professionalise the sector," he said. "This capital increase allows us to position ourselves as the best option for small real estate agencies looking to monetise their property management portfolio or even just exchange non-payment insurance premiums." It is a statement that captures something important about Zazume's philosophy: the company is not trying to compete aggressively with every agency in the market. It is positioning itself as the partner that makes the entire ecosystem work better — for agencies, for landlords, and ultimately for tenants.

The company has already taken its first concrete step in this direction. In April of this year, Zazume initiated its portfolio acquisition strategy by taking on the rental portfolio of Landa Propiedades in Zaragoza. This deal marked the beginning of what the company expects to be at least four such agreements completed before the end of 2026. Through these strategic alliances, real estate agencies can monetise an asset they have built over years while ensuring their clients continue to receive top-tier service from a team of specialists. It is a win-win structure that removes the complexity of rental management from the plate of traditional agencies and places it squarely in the hands of a company that has been built from the ground up to do exactly that.

How AI Is Changing the Rules of Rental Management in Spain

At The AI World, we have tracked countless applications of artificial intelligence across industries over the years, but there is something particularly compelling about watching AI make meaningful inroads into a market as old and structurally rigid as residential real estate. Spain's rental market has historically operated on personal relationships, informal agreements, and paper-based processes. Digitisation in this space has been slow. The result is a sector that has often failed both landlords and tenants simultaneously — landlords who could not get reliable income guarantees, and tenants who faced confusing, inconsistent experiences every time they moved.

Zazume's platform addresses this from both ends by embedding artificial intelligence directly into the core management workflows. The AI layer handles everything from tenant screening and risk assessment to rental pricing optimisation and maintenance coordination. It enables a level of precision and responsiveness that no human-led team operating at the same scale could realistically match. The company's model integrates this proprietary technology with a layer of financial services — including guaranteed rent and non-payment insurance products — creating a combined offering that is considerably more resilient than anything the market has previously seen in this category.

The potential that AI unlocks here is not just operational. It is commercial. Zazume has noted that Spain's residential rental market represents a potential revenue opportunity of around €1.5 billion, and the current fragmentation of that market means that most of that value is sitting uncaptured. Traditional agencies, by their very nature, tend to prioritise buying and selling transactions because the profit margins are higher and the processes are more familiar. Rental management gets treated as a secondary activity — done out of necessity rather than strategic intent. The consequence is that these agencies rarely invest in the tools, training, or systems that would allow them to genuinely optimise their rental portfolios. Zazume's AI-powered platform closes that gap, making rental management not just viable but genuinely profitable for every participant in the chain.

What makes Zazume's technology particularly well-suited to this market is that it does not ask agencies to throw away their existing systems and start from scratch. The platform is designed to integrate with legacy infrastructure, meaning agencies can onboard without the kind of operational disruption that typically makes digital transformation so daunting for smaller organisations. The technology meets the market where it is — and then lifts it to where it needs to be.

Addressing a Long-Neglected Gap in the Real Estate Market

One of the more revealing aspects of Zazume's story is what it tells us about where the European PropTech ecosystem has — and has not — focused its attention. The build-to-rent and proptech sectors have attracted enormous capital over the past decade, but much of that investment has flowed into high-visibility areas like luxury residential platforms, commercial property analytics, or short-term rental technology. Long-term residential rental management, particularly in markets like Spain where the sector is heavily fragmented and dominated by small agencies, has remained relatively underinvested.

Zazume is changing that narrative. The company has already guaranteed more than €40 million in rental income to its property owners — a figure that demonstrates the scale at which it is already operating, even before this latest funding round has been deployed. The platform provides landlords with guaranteed rent, assuming the financial risk of non-payment so that property owners receive their income regardless of what happens on the tenant side. It also assumes initial expenses and provides personalised financing options for property owners dealing with repairs and renovation costs. This is a level of service that most traditional agencies are simply not structured to provide.

The investors backing this round clearly share Zazume's conviction about where the market is headed. Ole Ruch, Managing Partner of Nordstar, was direct about the firm's belief in Zazume's trajectory. "We believe Zazume is destined to become the leader of residential rental in Southern Europe," he said, "establishing the foundations with proprietary AI technology and having proven the optimisation of residential rental management through its quality services and added value." For Nordstar, which led Zazume's original seed round back in 2021, this latest commitment is a continuation of a long-term bet on a team and a technology that has consistently delivered results. The fact that GTV Capital, a Spanish family office, chose this round as its entry point into the company is equally telling — it signals that local investors with deep knowledge of the Spanish real estate market are now taking Zazume's potential seriously at a meaningful scale.

It is also worth placing this round in the context of Zazume's broader financial journey. The previous investment round, completed in April 2025, raised €2.3 million and was specifically deployed to upgrade the company's proprietary technology stack and push the business to operational profitability. That strategy worked. Zazume has now confirmed that it has achieved financial break-even — a milestone that gives the company a very different kind of negotiating position when it comes to raising capital. Unlike many startups that return to investors with cash burn problems and existential urgency, Zazume entered this round from a position of strength. The company could, by its own account, have continued operating without additional capital. The decision to raise was a strategic one, chosen to accelerate market share expansion rather than to survive — and that distinction matters enormously when it comes to how the capital will be used.

What Lies Ahead: Zazume's Vision for Southern Europe

Looking at the trajectory Zazume has mapped out, it becomes clear that the company is thinking well beyond Spain's largest cities. The growth plan is anchored in provincial capitals — the second and third-tier cities where rental markets are active but dramatically less serviced than Madrid or Barcelona. These are markets where professional management infrastructure is thin, where landlords are often managing properties informally, and where the arrival of a technology-driven operator with financial services capabilities would be genuinely transformative.

By the end of 2026, Zazume is targeting a managed portfolio of more than 5,000 properties — up from its current base of 3,500. The company also expects to double its billing during this period, which reflects both the increased scale of its portfolio and the additional revenue streams unlocked by its financial services products. Looking further ahead to 2027, Zazume has set its sights on surpassing 10,000 managed properties — a figure that would firmly establish it as one of the most significant players in Spanish residential rental management and a genuine force in the Southern European PropTech landscape.

For those following the intersection of AI and real estate at The AI World, Zazume's journey is one worth watching closely. The company represents exactly the kind of application of artificial intelligence that has real, tangible consequences for how people live and how property owners manage their most valuable assets. It is not AI for its own sake — it is AI applied thoughtfully, at scale, to a market that desperately needed it. The combination of proprietary technology, financial services innovation, and a clear-eyed consolidation strategy gives Zazume a competitive moat that will be difficult to replicate, and the backing of experienced investors who have seen the company grow from a seed-stage idea to a profitable, scaling business adds another layer of credibility to everything it is building.

Spain's rental sector is changing, and Zazume is at the centre of that change. With €7.8 million raised in total, a growing portfolio, a proven AI platform, and an ambitious but grounded roadmap, this Barcelona-born company is writing a compelling chapter in the story of how technology is finally transforming one of Europe's most important — and most overlooked — real estate markets.