Grand Rapids is rewriting its zoning ordinance through Zone GR to implement Bridge to Our Future, the city's 20-year Community Master Plan. Zoning determines what uses and buildings are allowed on particular land and therefore turns the broader master-plan vision into legally enforceable development rules. The city says the rewrite is intended to address housing choice, walkable neighborhoods and sustainable development. Decisions about where additional apartments, mixed-use buildings, neighborhood businesses and different housing types may be built can affect housing supply, transportation patterns, property values, redevelopment opportunities and the physical character of established neighborhoods for decades. The master plan is the aspiration. Zoning is where residents actually find out what can be built next door. The rewrite should make it easier to build the kind of city we say we want while still giving neighborhoods understandable, predictable rules.