DERRINGER INVESTMENT COMPANY (real-estate) in Sammamish, WA, manages investment properties and provides real estate investment advisory services to investors. We offer a range of investment strategies to maximize returns and minimize risk.
Operator computes a Health score continuously. It is the one number that tells you if this shop is winning, losing, or steady. Here is how Colleen Gerg, Ma, Rdn broke down on Apr 25, 2026.
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