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.

Miguel Vairinhos, CEO and Buyer’s Agent at Keystone

Miguel Vairinhos

CEO / Buyer’s Agent

20+ years in construction and real estate across Portugal and Australia · Co-founder and CEO, New Nest Capital

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.

Mauricio Rodrigues, COO and Buyer’s Agent at Keystone

Mauricio Rodrigues

COO / Buyer’s Agent

20+ years across real estate, construction and digital strategy · Co-founder and COO, New Nest Capital

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.

Melanie Pinto Vairinhos, Head of Architecture and Buyer’s Agent at Keystone

Melanie Pinto Vairinhos

Head of Architecture / Buyer’s Agent

Registered architect, Ordem dos Arquitetos no. 18605 (since 2010) · MArch, Universidade Lusíada de Lisboa · 20+ years across Australia and Portugal

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.

Structure

How the team works together

01

Three disciplines, one side of the table

Most buyer representation is a single person with a property background. Keystone is deliberately built differently: strategy and negotiation, operations and client process, and architecture and technical assessment. When a property raises a question about renovation potential, licensing risk or what a structure will actually allow, that question is answered inside the team rather than deferred until after an offer has been made.

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.