ARU zone coverage in Lisbon and Porto (2026)
Lisbon
A large part of the historic and inner city in ARU zones
Main ARU areas: Alfama, Mouraria, Intendente, Bairro Alto, Chiado, Beato, Alcântara, Marvila, Belém, and others across the historic and inner-city fabric.
Check: Lisboa Interactiva (lisboainteractiva.pt) or CML Reabilitação Urbana
Porto
Historic centre + adjacent inner-city areas in ARU
UNESCO World Heritage Historic Centre designated as ARU. Extends to Bonfim, Cedofeita, Campanhã, and other inner-city parishes under Programa de Reabilitação Urbana.
Check: CMP Plano Director Municipal or Porto.pt urban rehabilitation section
Buyer due diligence checklist: preferência verification
Tenancy status verified
Request sight of any current lease agreements. Check registo predial for registered tenancies. Confirm with seller in writing whether property is currently occupied by a tenant.
ARU zone status confirmed
Check property address against municipal ARU zone maps. For Lisbon: Lisboa Interactiva. For Porto: CMP planning. For other municipalities: contact the câmara municipal directly.
Heritage classification checked
Check SIPA database at patrimoniocultural.gov.pt. Verify both the property's own classification status and its proximity to classified buildings and their protection perimeters.
Co-ownership structure reviewed
Review caderneta predial and certidão de registo predial for any shared ownership or fractional interests. Relevant for inherited properties or properties acquired jointly.
Seller warranty in CPCV
CPCV to include seller warranty confirming all preferência holders identified, all notifications made, and no right exercised or declared. Backed by specific indemnity for buyer's losses.
All notification periods expired before escritura
Confirm that the notification period for every preferência holder (10 days for public entities, 30 days for tenants) has fully expired before proceeding to the escritura. A notification made but not yet expired creates ongoing risk.
Post-escritura challenge window
A preferência holder who was not correctly notified can bring an ação de preferência within 6 months of learning the essential terms of the sale, even after the escritura. The period runs from knowledge, not from completion. Independent legal verification before the CPCV is the primary protection.