Passive House in Chiclana: Maximum energy efficiency and expansion potential

Engel&Völkers presents a newly built semi-detached passive house located in a quiet residential area. The property sits on a 500 m² urban plot with access to two traffic-free streets, standing out for its bioclimatic design and extremely high thermal-acoustic efficiency.

The house currently has 95 m² of built area and 79 m² of usable floor space on a single level. The main area is an open-concept living-dining room that integrates a high-end kitchen. It is equipped with Siemens appliances, a central island with a water zone, dishwasher, and storage, which seamlessly extends into a solid wood dining table.

Natural light floods the spaces through large glass windows. In terms of finishes, the home features continuous light oak parquet flooring, perimeter and indirect LED lighting integrated into the ceilings, a cross-ventilation system, air conditioning, and wooden ceiling fans to promote air circulation.

The rest area consists of two bedrooms where the exterior carpentry serves a dual purpose as both a window and a door with direct access to the plot:

• Master Suite: Includes a custom-built walk-in closet, sleeping area, desk or storage space, and a full en-suite bathroom. The bathroom presents a functional design with wall-hung sanitaryware, a walk-in shower with a glass screen, and wall finishes that combine textures with wood accents.
• Secondary Bedroom / Office: A highly optimized space featuring a custom wooden structure that elevates the bed (loft style). This solution frees up the entire lower area for use as an office and storage.
• Main Guest Toilet: In addition to the en-suite, the house includes a washroom that already has the pre-installation (water and drainage connections) built into the structure to add a shower in the future.

The plot features low-maintenance landscaping that combines lawn areas, porcelain paving, and polished concrete in the access and parking zones.

• Pool: The basin is lined with deep blue porcelain stoneware, equipped with a salt chlorination system and pre-installation for heating.
• Porches: Features an east-facing entrance porch and a covered rear porch with a pergola facing southwest. The structure of the latter is calculated to support a future enclosure (glass or masonry) to expand the interior living area.
• Outdoor Storage: An independent laundry room and an existing storage room, with spatial and technical provisions to build two additional storage rooms. The exterior facade of the building is finished with a warm-toned rustic mortar.

STRUCTURE AND EXPANSION PROJECT (UP TO 180 m²)

One of the greatest assets of this property is its structural foresight. The building has been designed and constructed to support a second floor, potentially reaching a total surface area of 180 m².

• Foundation: 1-meter thick ventilated crawl space, ensuring total insulation from the ground and a high load-bearing capacity.
• Architectural Project: The comprehensive design contemplates and documents both the current ground floor and the future first floor.
• Executed Infrastructure: The exterior masonry staircase, which provides independent access to the accessible flat roof, is already built.
• Available Materials: The sale includes construction materials already purchased and stored for the expansion phase, notably the premium-quality exterior carpentry (windows) intended for the first floor.

The preliminary design for the upper floor envisions the creation of a new master bedroom with an en-suite bathroom for the current home, plus an independent apartment (living-kitchen, bathroom, and one bedroom). This height commands panoramic views over the salt marshes and the Bay of Cádiz.

SYSTEMS AND INSTALLATIONS (PASSIVE STANDARD)

Passive behavior and hygrothermal comfort are achieved through state-of-the-art technologies and insulation:

• Thermal Envelope: High-thickness insulation in floors and perimeter walls, virtually eliminating thermal bridges.
• Exterior Carpentry: Highly energy-efficient enclosures with triple glazing. The frames, finished in an exclusive matte olive green, guarantee airtightness and acoustic insulation.
• Climate Control: Zoned underfloor heating system throughout the house, supported by split-type air conditioning units in the living room and master suite.
• Home Automation and Ventilation: Automated cross-ventilation system for indoor air renewal without temperature loss. Climate control (underfloor heating and AC), blinds, and ventilation are fully automated and manageable via WiFi.

Understanding the true value of this property requires looking beyond its currently built surface. It is not just a home, but a work of advanced bioclimatic engineering and a future project already underway.