In the heart of DOWNTOWN Montlhéry, discover this rare real estate complex offering exceptional potential. Comprising 2 large houses, two commercial spaces, outbuildings and outdoor areas, it will suit a large family, an investor or a professional looking to combine residential and business activities. Spanning 421 m² of total surface area, with approximately 300 m² of living space, the complex offers numerous renovation possibilities: primary residence, rental investment, co-living, division into multiple units or mixed residential/commercial project. The homes feature generous bright volumes with 8 bedrooms, one bathroom, three shower rooms, two separate toilets and spacious living areas to redesign according to your preferences. After renovation, it is possible to create three independent homes as well as two studios, offering strong value appreciation potential. Two commercial spaces complete this property, perfect for professional activity or to generate rental income. You will also enjoy a garden, a courtyard, terraces (approximately 140 m² of outdoor space), a beautiful vaulted cellar, a workshop and a boiler room. Ideally located in the town centre, the property benefits from immediate access to shops, schools, transport, services and the N20, offering a practical and sought-after living environment. A rare property with multiple possibilities, ideal for a family, heritage or investment project. A viewing is essential.