New Build Twin Villa With Private Pool & Lake Constance Panorama

A rare front-row seat above Lake Constance. The K4 Twins is a high-end, turnkey semi-detached residence in Rorschacherberg — one of Eastern Switzerland’s most sought-after residential hillsides — offering the privacy and generosity of a detached villa combined with the certainty of a fully approved new build.

Perched on a sun-drenched slope, the home enjoys an unobstructed, protected panorama that sweeps from the lakeshore across the water to the Alpine chain, with no neighbouring construction to interrupt the view. Quiet residential surroundings and immediate proximity to nature meet effortless access to the wider region.
Architecturally, the residence is a clearly structured two-storey volume defined by distinct horizontality. Light concrete bands and dark-textured facade profiles create a refined interplay of lightness and weight, while large-format glazing on both main levels opens the living spaces entirely to the lake.

The ground floor pairs an expansive 60 m² living and dining area with a guest room, a study/office and a bathroom, flowing seamlessly onto a covered patio, terrace and an outdoor kitchen beside the private pool. Upstairs, the private quarters comprise a master suite with walk-in dressing and principal bathroom, three further bedrooms and a generous 36 m² terrace. The basement adds a double garage, cellar, laundry, storage and technical rooms.

Sustainability is built in: a green flat roof carries a photovoltaic system. As the project is approved and execution-ready, the buyer can still individually define interior materialisation — floors, walls, kitchen, bathrooms — appliance selection and minor floor-plan adjustments in close collaboration with the architect.

Two mirrored units are available at Käserenstrasse 4 / 4A and may be acquired individually or together. A turnkey opportunity for a discerning owner seeking design, view and immediate delivery.