A wave of policy and market changes due to take effect in 2026 will raise the cost of housing for Portuguese households and alter incentives across the sector. Measures affecting rents, mortgage lending rules and tax treatment of construction and property are set to impact owners, tenants and prospective buyers, with knock-on effects for affordability, market dynamics and the state budget. The package will reframe public incentives and regulatory risk for investors and households alike, requiring households and professionals to reassess financing, renting and development decisions.