Unrenovated building: how to make it profitable step by step (2026)

Many owners inherit or buy an old building and freeze: they don't know where to start, how much to renovate, or whether it's worth it. The truth is that unrenovated buildings are today's best opportunity in the Spanish market — if planned right.

Step 1 · Technical and legal audit

Before touching a brick: structural report, systems (electrics, plumbing, gas), habitability certificate, ITE and urban planning status. That tells you what you can do and the minimum cost.

Step 2 · Choose the operating model BEFORE renovating

Renovating for long-term rent, coliving, short-term or mixed use is not the same. The model dictates floor layout, number of bathrooms, kitchens and finishes. Renovating without choosing the model first is throwing money away.

• Long-term: lower investment, full kitchens/bathrooms per unit, ROI 6-9%.
• Coliving / student housing: more bathrooms, shared areas, higher income per m² — see student & coliving management.
• Short-term / guest house: licence first, hotel-grade finishes, ROI 10-15% but higher operations — see guest house management.
• Mixed by floor: maximises returns when location allows.

Step 3 · Realistic budget

In 2026, a full renovation in Spain runs €600-1,200/m² depending on finishes and city. Reserve 15% contingency and separate CAPEX from OPEX (furniture, licences, marketing).

Step 4 · Financing

Banks currently finance up to 60-70% of the renovation cost with the building as collateral. Alternatives: capital partner, joint venture with an operator or selling floors to finance the rest.

Step 5 · Delegate or self-manage

If it's your first building, delegating to an operator who covers works + operations avoids costly mistakes. We accompany you from the feasibility study, coordinate the renovation with trusted contractors and then run the building turnkey. Details at building management.

Free feasibility study

If you own an unrenovated building in Spain and want to know what to do with it, write to us or send a WhatsApp. We prepare a feasibility study with recommended model, indicative budget and expected returns.