Table 3: Summary of the original state and improvements to the refurbishment at letamendi 29.

Before After
Functionality
Existing flats
Terrace
Four homes in a state of deterioration with deficiencies
Out of use, obsolete installations, high side walls
All homes refurbished and in use
New penthouses, green roof, reduced side walls
Accessibility
Vertical mobility
Communication
The stairway was the only method to ascend (5 floors)
Telecommunication installation with deficiencies
Renovated stairway and incorporation of elevator
New intercom system and telecommunication installation
Safety
Structures
Installation
Slabs between floors with affected materials
Residual water pipes with cracks and leaks
Repair and reinforcement of slab and load-bearing walls
Replacement of pipes and new connections
Heritage
Main façade
Interior spaces
Deteriorated, discolored or missing closures,
Walls, ceilings and carpentry in poor condition or modified from original
Refurbishment of walls, carpentry and decorative elements
Restoration of walls and woodwork to their original state
Sustainability
Existing building
New penthouses
Skin without insulation, inefficient installations, lack of comfort
-
Insulation in façades, efficient climate control, better waterproofing
Thermal quality superior to standard regulation in walls and woodwork
Economy
Current expenses
Revaluation
High, but insufficient to maintain and refurbish the building
-
Minor given the incorporation of new neighbors in flats and penthouses
Estimation: 35% for a sale; 70% for rental