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# Feasibility Report for Construction at Alameda dos Oceanos, 21101F Lisboa ## General Description This cadastral area is located in Lisbon and is classified under the **"Consolidated Central and Residential Spaces - Urban Layout C"** zone according to the Municipal Master Plan of Lisbon. This zone is characterized by free implantation layouts built since the second half of the 20th century, governed by Articles 40, 41, and 42 of the PDM Lisboa 2020. ## Area, Building Index and Construction Potential The total area of the cadastral plot is **4,977.70 m²**. The zone is subject to a **building index (Ie) of 1.2**, which can be increased to 1.5 in exceptional situations as provided by the municipal regulations. Based on this building index, the maximum theoretical construction area would be approximately **5,973 m²** (4,977.70 m² × 1.2), with potential for up to **7,466 m²** in exceptional circumstances. ## Height Limitations and Building Envelope For isolated buildings in Urban Layout C, the **maximum facade height is 25 meters**, except in special situations provided in the regulation. A recessed floor is permitted when dominant in the urban front, not exceeding **3.5 meters above the maximum facade height**. The **maximum depth of gable walls** is limited to **15 meters** (18 meters for hotel establishments and collective facilities), not considering balconies and cantilevered elements. Buildings must maintain the alignment of the marginal plane of the built environment, except in special justified cases. ## Parking Requirements The development must comply with minimum parking requirements as established by Article 75 of the PDM. The calculation considers **20 m²** per light vehicle parking space on surface or **25 m²** per space in built structures (basement or silo). The municipality may waive minimum parking requirements if the total equals or is less than **5 parking spaces** or in consolidated areas with constraints. ## Ground Floor Extensions and Basement Construction Ground floor constructive extensions beyond rear alignment over waterproofed underground areas are allowed, with a **maximum height of 3.5 meters** measured to the underside of the roof slab. **One basement floor for housing is authorized** if ventilation and lighting conditions are met, and basement floors are also authorized for tertiary, equipment, tourism, parking and technical areas with adequate ventilation and lighting conditions. ## Environmental and Site Planning Requirements For environmental requalification of courtyards, a **weighted vegetated area (Svp) of at least 0.5** (varying between 0.5 and 0.7) of the total courtyard area must be observed. Courtyards fronting public space with street frontage exceeding **10 meters** must be maintained without infilling authorized. For courtyards with unbuilt area less than **50% of the courtyard area**, autonomous infiltration and rainwater storage systems must be provided (except for small corner courtyards). ## Use Restrictions and Change of Use Change from residential to other uses in Layout C is only possible when covering all fractions, when half of the fractions already have other use with independent access, or on ground floors (except tourism which can share access). ## Construction Standards and Technical Requirements All construction works must comply with national building standards, including: - **Minimum ceiling height of 2.40 m** for residential buildings - **Energy efficiency class B minimum** for elevators - Implementation of preventive solutions against Radon in granitic zones - Compliance with fire safety regulations according to building risk category - **Minimum air renewal rate of 0.50 h⁻¹** for new residential buildings ## Permits and Approvals Construction works require municipal licensing with deliberation deadlines of **120 days for works up to 300 m²**, **150 days for works between 300-2,200 m²**, and **200 days for works over 2,200 m²**. All documentation must be submitted in electronic format with qualified digital signatures. ## Conclusion The site presents good development potential within the established urban parameters, with flexibility for various residential and mixed-use configurations. The 1.2 building index allows for substantial construction area, while height and design restrictions ensure integration with the existing urban fabric. Compliance with environmental requirements, parking standards, and technical regulations will be essential for successful project approval and implementation.
