The Keystone Team

The Keystone Team — Buyer’s Agents in Portugal and the Algarve

Keystone combines buyer representation, real estate market knowledge, architectural understanding, project insight and a practical local network.

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Miguel Vairinhos

CEO / Buyer’s Agent

Miguel brings strategic leadership, real estate insight and project execution experience to Keystone. His role is focused on client strategy, opportunity assessment, negotiation support and ensuring that buyers move through the acquisition process with confidence and clarity.

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Mauricio Rodrigues

COO / Buyer’s Agent

Mauricio leads operations, client coordination and digital strategy for Keystone. With a strong background in marketing, communication and business systems, he helps structure the buyer journey, manage information flow and ensure a clear, professional experience from first contact to acquisition.

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Melanie Pinto Vairinhos

Head of Architecture / Buyer’s Agent

Melanie brings architectural expertise and technical understanding to the buyer representation process. Her perspective helps clients better assess property potential, renovation considerations, licensing implications and design-led opportunities before making a purchase decision.

Real estate, architecture, operations and investment thinking — aligned around the buyer.

Keystone Buyer’s Agent

Before you buy in Portugal, put someone on your side.

A property purchase is too important to approach alone. Keystone helps international buyers move through the Portuguese property market with structure, insight and independent representation.