When dealing with a leaky or damaged roof, many homeowners in San Jose, San Mateo, and across Silicon Valley prefer a targeted repair to keep costs down. However, under California building codes, a series of seemingly minor repairs can quickly escalate into a mandatory, full-scale roof upgrade. This threshold is known as the “50% Rule.” Governed by California’s Title 24 Building Energy Efficiency Standards and local building codes, crossing this threshold changes the legal definition of your project from a...