As annual flooding rises in urban settings, small businesses and homes are under severe risk. A study for Bergen Point, New York predicts 82 days of flooding in 2050, compared to 7 days recorded in 2020. By 2090, there’s predicted year-round flooding. In New York’s high-risk flood zones, even an inch of water can cost up to $25,000. Additionally, 70% of businesses contain 10 or fewer employees in these regions, exacerbating these effects. Large infrastructure changes successfully combat flooding; however, these measures take time and many will still receive damages. This barrier provides a cost-effective and practical solution to support these at-risk, business-owners, families, and their assets quickly. The proposed Modular Passive Flood Barrier acts passively, removing the risks of installing barriers during active floods. Water flows through the grate and lifts the buoyant top, a 2’ x 2’ panel constructed of recycled polypropylene and polyethylene which is affordable and sustainable. The weighted base and rubber treading provide stability. The hinge and stainless steel cables lock at 75 degrees, and with interlocking edges, the barriers can protect various-sized properties. With resourceful materials, simple installation, and passive ability, this design plays of pivotal role in mitigating urban flood damages.