Palomma's B2B2C Model Shows How to Unlock Supply and Demand Through a Single Intermediary

Palomma, a Medellín-based fintech startup, raised $10M in Series A funding to expand its rental financial services platform in Colombia. The company combines AI-powered property management software with rent payment processing and financial products for tenants and landlords. It processes $130M in monthly rental payments across 200,000+ tenants, served through 500+ property managers. ARR grew 30x in 18 months to $3M, with net revenue retention of 390% after 12 months.

Palomma's growth is not driven by acquiring individual buyers and sellers — it scaled by routing through a professional intermediary class (property managers) who already controlled both sides of the transaction. This is a structural choice, not a marketing one, and it reflects a deliberate approach to marketplace platform setup guide that compresses the cold-start problem by converting distribution partners into supply aggregators. The 390% NRR also signals that the platform is expanding revenue per relationship, not just adding new ones — which is a fundamentally different and more defensible growth engine.

SUPPLY: Palomma didn't recruit landlords directly. It onboarded property managers who brought existing landlord relationships with them. Each new property manager activates a cluster of supply instantly. This is supply aggregation through intermediaries — a far more capital-efficient approach than one-to-one supply acquisition.

DEMAND: Tenants didn't choose Palomma — their property manager adopted it. Demand is captured passively through institutional relationships. This removes the need for consumer marketing spend entirely at the demand-generation stage.

LIQUIDITY: By targeting property managers who already operate active rental portfolios, Palomma enters markets with pre-existing transaction flow. There's no chicken-and-egg problem because the intermediary already has both sides in place.

TRUST: Trust is established at the B2B layer first. Property managers vouch for the platform to both landlords and tenants. This creates layered trust — institutional trust transfers downward to the end user, which is far more efficient than building consumer trust from scratch.

GROWTH: The 390% NRR tells the real story. Each property manager relationship expands in value over time as more financial products are adopted. Growth comes from depth, not just breadth. This is expansion revenue — a hallmark of platforms that have genuine product-market fit with their supply side.

ONBOARDING: Property managers get a free or low-friction entry point (AI leasing software and rent collection). The financial products layer on top only after payment data is established. This is a classic land-and-expand onboarding model — reduce the initial commitment, then monetize the relationship once trust and data accumulate.

MONETIZATION: Palomma uses a dual monetization structure — SaaS subscription from property managers plus transaction-based revenue from payments and financial products. The payment rails generate proprietary data that underwrite the financial products. Each layer of monetization feeds the next. This is a compound revenue model, not a single take-rate business — and it reflects one of the core marketplace launch fundamentals: align your monetization structure with the trust and data you've already earned from your supply side.

• Map your intermediary layer: Identify whether a professional class already sits between your buyers and sellers. If so, model what happens to your acquisition costs if you sign up intermediaries instead of individuals.

• Design your onboarding around the intermediary's core pain, not your monetization goal: Palomma led with leasing software and rent collection — not financial products. Give intermediaries a reason to adopt before you ask them to sell your higher-margin offerings.

• Audit what data your core transaction generates: Payment data, booking data, inventory data — whatever flows through your marketplace has underwriting or personalization value. Identify what you are passively collecting and whether it could unlock a second revenue stream.

• Sequence your product expansion deliberately: Palomma added tenant rewards, landlord advances, rental guarantees, and rent-splitting in stages. Each new product used existing data and existing relationships. Build your product roadmap around what your current users already need next — not what requires new users to monetize.

• Track NRR, not just new signups: If your revenue from existing cohorts is not growing over time, your platform is not creating compounding value. NRR above 100% means your existing base is growing without adding new customers — that is the signal that your expansion model is working.

• In fragmented or emerging markets, plan to do more than one thing: Palomma's founder explicitly noted that in Latin America, you cannot build a large business with a single point solution. If your market is fragmented, underdeveloped, or underserved by adjacent infrastructure, your competitive moat may require vertical integration rather than a narrow focus.