Tucked away from the pace of everyday life, 510 Herrin Lane is a true Hill Country sanctuary where intentional design and expansive acreage come together just outside Bertram. Created for those who value independence, longevity, and refined living, this partially earth-sheltered concrete residence blends seamlessly into the landscape, delivering a quiet, temperature-stable environment year-round. Constructed with reinforced concrete and steel, the home provides exceptional durability, energy efficiency, and resilience rarely found in traditional construction. Earth contact naturally contributes to a negative ion rich indoor environment similar to the air after a fresh rain supporting improved air quality, reduced allergens, and a calming, wellness-focused atmosphere. Inside, generous living spaces feel warm and inviting, with hardwood and slate flooring, abundant natural light, and flexible areas suited for entertaining or everyday living. Advanced air filtration and whole-home water purification systems further enhance comfort and wellness. The kitchen serves as the heart of the home, designed for serious cooking and highlighted by a BlueStar gas range, premium appliances, and generous prep space. A thoughtful flow and natural light strengthen the connection between indoor and outdoor living. Outside, rolling Hill Country terrain unfolds with scenic views and a peaceful spring-fed pond that attracts wildlife and creates a serene backdrop. The acreage lends itself well to agricultural pursuits, including the potential for a boutique wine vineyard in a region suited for viticulture. An insulated steel outbuilding with multiple roll-up doors provides flexible workshop or storage space, along with separate guest or multi-generational living quarters. Water-capture systems and dual septic setups support a self-sustaining lifestyle. Showings are available by appointment only.