This self-build family home meets rigorous Passivhaus standards for cost‑effective construction, operation, and maintenance. A landscape‑led, compact form and contextual materials integrate with the site. I am the homeowner, architect, and certified Passive House designer, collaborating with local suppliers and trades. The 0.75‑acre south‑sloping site lies about 4 miles southeast of Newtownbutler near the NI–ROI border, rising 8m over roughly 80m by 35m. The brief: 3 bedrooms, a home office, efficient footprint, and Passivhaus performance. Built weathertight in 100 hours, in the winter 2024-25, by a four‑person crew using timber off‑site panels from Irvinestown.