Property Description
OFFER: FULLY AUTONOMOUS ESTATE – 5000 m² OFF-GRID
EXCLUSIVE – TRY BEFORE YOU BUY!
Self-sustaining farm with views of the Montaneta mountain: 195 m² FULLY LEGALIZED property in San Juan de la Rambla. Discover this 4,973 m² estate in El Reventón, where legal security meets modern comfort and total independence. The 195 m² of built area is fully registered in the Land Registry and Cadastre.
HOUSE AND COMFORT
Main House: Spacious kitchen, large living room, two bedrooms, double BBQ area, and a second kitchen/dining room, including a workshop and storage area.
Guest House: Independent apartment with a bedroom, kitchen, bathroom, and efficient fancoil system.
Heating and Cooling: Temperature control is managed by high-efficiency heat pump air conditioners, complemented by a wood-burning fireplace featuring a built-in oven and grilling station.
ENERGY SYSTEM: INDUSTRIAL-GRADE AUTONOMY
Our system is built for reliability, free from "black box" electronics and fragile software.
Solar & Thermal: 6 kWp solar array, complemented by an 8 kW solar thermal system for domestic hot water production.
Backup Generator: A 14 kVA mechanical Perkins diesel engine, driving a 70-year-old American military-spec alternator. The stability of the 50Hz/230V output is maintained by our proprietary analog, field-repairable stabilizer.
Storage: 150V / 60 Ah lead-acid battery bank. This solution is BMS-free, easily serviceable, and extremely stable. The system utilizes 40% depth-of-discharge protection via MPPT control to ensure maximum battery longevity.
Efficiency: IT equipment runs on direct 120-150V DC voltage to eliminate conversion losses. Inverters automatically switch to standby mode below 130V to minimize consumption.
Future-Proofing: The system architecture is fully compatible with future upgrades to LiFePO4 (Lithium Iron Phosphate) technology.
WATER MANAGEMENT AND ECOLOGY
Water Sources: Municipal mains water connection (as a safety reserve, approx. €150/year) and a 12 m³ tank system for rainwater harvesting.
Ecology: Closed-loop, natural greywater treatment. Utilization within 24 hours prevents anaerobic decomposition, while vegetation reclaims vital nutrients in a permaculture-based approach.
Agriculture: 4 large terraces, fruit trees (banana, citrus, passion fruit, walnut, chestnut, plum, etc.), animal enclosures, greenhouse, and vegetable garden.
BUSINESS AND TECHNICAL TRANSPARENCY
Internet: Professional 5G installation with UTP network cabling throughout, perfect for remote work.
Knowledge Transfer: Upon purchase, we provide complete technical documentation (electrical schematics, component lists, manuals) and comprehensive technical training.
"Try-before-you-buy": Book a stay via Booking.com! Experience the system firsthand with no obligation. If you proceed with the purchase, the cost of your stay will be deducted from the final price. Note: The trial period does not suspend the sale; the property is available to the first serious buyer.
OPERATING COSTS (approx. €500/year)
IBI (Property Tax): €42/year
Water: €150/year
Internet: €30/month
The property is debt-free, move-in ready, fully furnished, and comes equipped with all appliances integrated into the off-grid system.
For technical analysis: If any prospective buyer asks advanced technical questions (e.g., regarding alternator voltage regulation or galvanic isolation), please feel free to reach out to me; I can provide precise details to help you answer effectively.
Property Details
Baths
3
Price
€339,000
Beds
4
Type
Country House
Size
195 m²
Water
Cistern, Mains
Land
4,973 m²
Power
Generator, Solar System
Disclaimer - Off Grid Only Spain are not estate agents. Off Grid Only Spain provide an online advertising platform for the sale of off grid property and land in Spain. Before you purchase any land or property in Spain please hire a Gestor first and check with the local ayuntamiento and notaria what paperwork the property or land has and what you can legally do there.
EUSDWTU3
Property Location
Lomo Blanco, 22, 38428 San Juan de la Rambla, Santa Cruz de Tenerife, Spain



























%20(4).png)