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This case study presentation details a successful foundation subsidence remediation for a San Jose Homeowners Association (HOA). Two previous attempts by other organizations had failed in 1990 and 2002, due to using helical anchors at insufficient depths (4.5–8 m). Between 2018 to 2022, we proposed to underpin, lift, and stabilize the buildings using a uniquely cost-effective approach, in order to allow the HOA to restore structural integrity and market value. Our process began with thoroughly reviewing all available data, including original design criteria (1982–1983), research by soil engineering firms, design, soil engineering, and project management data, and previous repairs. The HOA board was involved in a lawsuit with affected homeowners after untenable bids created panic. The next lowest was $3M/building: ($15M total) and involved fully lifting the buildings and pouring new foundation mat slabs. Our recommended and implemented solution used the ASTM D-1143 Standard Test Method for Piles under Static Axial Compressive Load to determine the depth of competent soils for stabilization. We designed a helical anchor underpinning system, augmented with lean concrete, structural concrete, and plural urethane. We used professional communication methods to liaise on the project among the litigants and their attorneys. Our approach provided vertical and lateral resistance in this earthquake-prone area, stabilizing the buildings with a tolerance of 2.5 cm of subsidence per 6 m of lateral distance, or better. The modification created a hybrid system providing greater support than the original building design, with a near-perfect flatness (F). We successfully restored the buildings’ structural integrity and increased their market value by 40%, surpassing the repair costs. The successful outcome demonstrated the value of a solid engineering approach in an operational/remedial environment. The presentation covers the engineering specifications and timeline and explains the negotiation, bid, board relationship implications, and future uses of this method.