Reused concrete rubble is a challenging material to design and construct with despite its potential for diverging waste from landfilling and energyintensive recycling. We propose a design to construction framework that leverages a camera and computationally cheap tools for making stable and space-efficient irregular masonry building walls from concrete waste. Large flat concrete rubble pieces are stacked vertically on their thin faces in single-leaf masonry walls. Lifting operations compose the basis of the framework's construction planning and can be realised with any hoisting equipment. The framework also considers limited storage of construction sites. We use raster-based digital scanning and stacking methods chosen for their robustness and scalability. They provide stable and slender design options, minimising embodied energy through optimisation of void and masonry stability. The pattern regularity of the resulting single-leaf masonry designs is geometrically benchmarked against historic singleleaf masonry examples. Further informed by a compression load test, the results highlight a load-bearing capacity for buildings.