Refurbishing an old flat in Barrio de Salamanca: costs, permits and key considerations

Refurbishing an old flat in Barrio de Salamanca allows a stately home to be adapted to today’s needs and can increase its appeal, but it requires planning. Historic buildings hide both opportunities and constraints: old structures, shared services, heritage protection and layouts that do not always allow every change. Before buying or starting the works, it is wise to carry out a full technical and financial assessment.

Start with the building, not the finishes

A beautiful kitchen does not make up for problems with the roof, façade, drains or structure. Ask for the residents’ association minutes, enquire about any special levies and check the building’s mandatory inspections. Confirm the condition of the lift, courtyards and general systems. These items can affect the budget and timetable even when the works are focused inside the property.

Inside, an architect or surveyor should identify load-bearing walls, columns, ventilation and the routes of the services. Damp, uneven floors or cracks need diagnosing, not a cosmetic fix. A prior inspection reduces costly changes during the works.

Define a workable layout

Old flats often have long corridors, internal rooms or separate service areas. Reorganising the spaces can improve light, circulation and storage. However, kitchens and bathrooms depend on drains and ventilation; moving them too far can complicate permits and execution.

Also think about the future buyer or tenant. A large open-plan living area is attractive, but removing too many bedrooms may reduce demand. In family homes, a balanced layout, good storage and enough bathrooms usually add more value than very personal solutions.

Permits and heritage protection

The type of permit depends on the scope of the project. Structural changes, façades, windows or protected features require a different process from a simple internal refurbishment. Before ordering materials, check with a professional what documentation, project and authorisation you need. The residents’ association may also set conditions for works, hours, use of the lift or removal of rubble.

In listed buildings, some features must be preserved or reproduced. Mouldings, joinery, balconies or entrance halls may be protected. Integrating them well into the project preserves the character of the property and avoids later problems.

Build a complete budget

In addition to building work and services, include professional fees, permits, charges, skips, protection of common areas, kitchen, lighting, air conditioning and fixed furniture. Set aside a contingency for unforeseen issues, especially when not all systems can be checked before demolition.

Compare quotes on the basis of equivalent measurements. A low price may leave out necessary items. Define quality levels, deadlines, payment terms and responsibility for changes. Documenting decisions reduces misunderstandings and helps control overruns.

Refurbishing to live in or to sell

If the property will be your home, adapt the layout to your routines without losing functionality. If you are looking to sell or let, choose durable materials, a timeless style and solutions that appeal to a broad audience. Energy efficiency, sound insulation and well-designed air conditioning are playing an increasingly important role in decisions.

Before investing, compare the value of the property in its current state with its fair value after the refurbishment. Not every improvement is recovered euro for euro. The layout, light and building still set the price ceiling.

UBICASA can value a flat before or after refurbishment and help you define which works make sense according to the area and your objective. An initial valuation avoids designing around unrealistic expectations and makes it possible to decide whether it is better to refurbish, let or sell as it stands.