luxury real estate for sale San Martín de Valdeiglesias, Spain

Madrid New Start presents this extraordinary independent house for sale, located in one of the most exclusive residential areas. With a built area of 1,200 m² on an impressive plot of approximately 20,000 m², this property represents a perfect combination of luxury, privacy, and comfort.Every space has been designed with meticulous attention to detail, using high-quality materials that provide solidity, elegance, and functionality. The main house has 7 spacious and bright bedrooms, several lounges opening onto sunny terraces, and a spectacular cinema room with a bar, perfect for enjoying unique moments. Completing this area are a private office and a modern kitchen, designed for day-to-day living with the highest level of demand.Moreover, thanks to its multiple rooms and versatile spaces, the property offers the possibility to configure more than 7 rooms, making it an excellent choice for tourist accommodation projects, boutique hotels, or Airbnb-type exploitation, always subject to current regulations.The property also features a separate two-bedroom apartment with a kitchen, perfect for service personnel or on-site management.Outside, a 120 m² guest house offers two cozy bedrooms with en-suite bathrooms, providing an additional ideal space for guests. There is also a third building of 400 m², currently unfinished inside, that offers enormous potential to expand capacity or develop new units.Horse lovers will find a true paradise here, with stables and equestrian circuits that include a riding arena and a dressage track, adding a differential value for experiential tourism projects. For wellness, the property has a gym with a Jacuzzi and thermal area (Finnish, Turkish, and sauna), creating a highly attractive relaxation environment for premium clients.The indoor and outdoor swimming pools allow year-round use, while the paddle tennis courts and soccer field—with the possibility of installing a heliport—expand leisure options within the estate itself.The property is completed by an eight-car garage, a large cellar, cisterns, a natural spring well, and a stream that borders the estate, adding a unique character. Surrounded by nature and with a high level of privacy, it offers an ideal environment to develop an exclusive project.Contact us and schedule your visit.

There are exclusive properties. And then there is Isla Centinela. It is not a villa, nor an estate, nor a mansion. It is a private island of more than ten thousand square metres, crowned by a 1923 castle, anchored in the waters of the El Burguillo reservoir and located just over an hour from Madrid. An asset without comparison on the Spanish market.Built in 1923 upon a former watchtower and fully renovated, the castle rises as an enclave sculpted between rock and stone, where architecture and nature merge in a single gesture. It is laid out over four floors connected by a lift, and its battlemented towers, panoramic terraces and great floor-to-ceiling windows offer 360-degree views over the reservoir and the Ávila mountains.Inside, seven suites all exterior and each presided over by a bespoke designer fireplace offer rest with views over the water, some with an integrated jacuzzi. To these is added a grand entertainment pavilion with a professional bar, also fitted to be converted into four additional bedrooms, raising the capacity of the property to eleven bedrooms and eleven bathrooms. A living-dining room with kitchen, storeroom, garage and machine room complete the property. Every room is exterior and enjoys full climate control ducted air conditioning with hot-and-cold heat pump, plus heating guaranteeing maximum comfort in any season.The island is, moreover, entirely self-sufficient: solar panels, two backup generators and a sophisticated proprietary water purification and filtration system ensure complete independence. Its natural setting, with private coves, its own jetty and varied woodland, lends the whole an almost magical character. Access is by boat from the private jetty a luxury practically unique in the surroundings of Madrid, and during the months when the reservoir level drops, the island joins the mainland, allowing access by vehicle right up to the castle walls.A private residence of the utmost exclusivity, a corporate retreat, a destination for ultra-luxury experiential tourism, a setting for unrepeatable celebrations or film shoots. Just over an hour from Madrid lies a place that money can rarely buy: an entire island, with its castle, its history and its silence. Isla Centinela awaits whoever knows how to recognise the irreplaceable.Property details o Key features:Land area: 10,847 m² complete islandBuilt area: approx. 1,000 m²Layout: 4 floors with lift.Bedrooms: 11 all exterior Bathrooms: 11Suites with bespoke designer fireplacesEntertainment pavilion with bar (convertible into 4 bedrooms)Living-dining room with kitchen, storeroom, garage and machine room.Climate control: ducted air conditioning (hot-and-cold heat pump) and heating in every room.Self-sufficiency: solar panels, 2 backup generators, own water treatment.Setting: private coves, jetty, woodland.Year built: 1923 Fully renovated.Location: El Burguillo Reservoir, El Barraco (Ávila)Distance from Madrid: 80 km 1 h 10 min by car. Possibility of a helipad.Access: jetty and vehicle access in season when the water level drops.

There are exclusive properties. And then there is Isla Centinela. It is not a villa, nor an estate, nor a mansion. It is a private island of more than ten thousand square metres, crowned by a 1923 castle, anchored in the waters of the El Burguillo reservoir and located just over an hour from Madrid. An asset without comparison on the Spanish market.Built in 1923 upon a former watchtower and fully renovated, the castle rises as an enclave sculpted between rock and stone, where architecture and nature merge in a single gesture. It is laid out over four floors connected by a lift, and its battlemented towers, panoramic terraces and great floor-to-ceiling windows offer 360-degree views over the reservoir and the Ávila mountains.Inside, seven suites all exterior and each presided over by a bespoke designer fireplace offer rest with views over the water, some with an integrated jacuzzi. To these is added a grand entertainment pavilion with a professional bar, also fitted to be converted into four additional bedrooms, raising the capacity of the property to eleven bedrooms and eleven bathrooms. A living-dining room with kitchen, storeroom, garage and machine room complete the property. Every room is exterior and enjoys full climate control ducted air conditioning with hot-and-cold heat pump, plus heating guaranteeing maximum comfort in any season.The island is, moreover, entirely self-sufficient: solar panels, two backup generators and a sophisticated proprietary water purification and filtration system ensure complete independence. Its natural setting, with private coves, its own jetty and varied woodland, lends the whole an almost magical character. Access is by boat from the private jetty a luxury practically unique in the surroundings of Madrid, and during the months when the reservoir level drops, the island joins the mainland, allowing access by vehicle right up to the castle walls.A private residence of the utmost exclusivity, a corporate retreat, a destination for ultra-luxury experiential tourism, a setting for unrepeatable celebrations or film shoots. Just over an hour from Madrid lies a place that money can rarely buy: an entire island, with its castle, its history and its silence. Isla Centinela awaits whoever knows how to recognise the irreplaceable.Property details o Key features:Land area: 10,847 m² complete islandBuilt area: approx. 1,000 m²Layout: 4 floors with lift.Bedrooms: 11 all exterior Bathrooms: 11Suites with bespoke designer fireplacesEntertainment pavilion with bar (convertible into 4 bedrooms)Living-dining room with kitchen, storeroom, garage and machine room.Climate control: ducted air conditioning (hot-and-cold heat pump) and heating in every room.Self-sufficiency: solar panels, 2 backup generators, own water treatment.Setting: private coves, jetty, woodland.Year built: 1923 Fully renovated.Location: El Burguillo Reservoir, El Barraco (Ávila)Distance from Madrid: 80 km 1 h 10 min by car. Possibility of a helipad.Access: jetty and vehicle access in season when the water level drops.

This exceptional estate of 11 hectares (110,000 m²) is presented, occupying most of a hill and featuring two independent residences, offering an ideal environment for those seeking privacy, leisure, and contact with nature. The main house, approximately 250 m², has 6 bedrooms, 2 bathrooms, a large living room, and kitchen, located on the highest point of the estate and offering panoramic 360-degree views. It has a private pool, outdoor meeting area, and a large garage/storage space, combining comfort and functionality in a privileged setting. The additional house or caretaker's house, about 100 m², has 3 bedrooms, 1 bathroom, a small storage room, private pool, and outdoor area, perfect for guests or service personnel. The estate includes vineyards, a sports area with a football field, clay pigeon shooting range, and a private hunting ground, with the possibility of installing stables, turning it into a paradise for equestrian life and outdoor activities. The entire perimeter is fully fenced, with interior and exterior accesses in excellent condition. Located in a privileged rural setting, the estate offers proximity to essential services such as banks, medical clinic, supermarkets, public school, and sports areas. The Intu Xanadú shopping center is 20 km away, and the Hospital and the University Rey Juan Carlos are 25 km away. Excellent road connectivity, just 10 minutes from the A5 and R5 accesses and 35 km from Madrid. The cities of Móstoles, Alcorcón, and Fuenlabrada are a 20-minute drive away, with various intercity bus lines and the Móstoles train station providing direct connection to Atocha-Renfe every 10 minutes. A unique opportunity for lovers of equestrian life, nature, and rural luxury, combining privacy, complete facilities, and excellent communication with Madrid.