Setback Visualizer
Understand setback requirements for your lot. Enter your property dimensions and city to see front, side, and rear setback lines with an interactive visualization.
Viewing setbacks for Los Angeles, CA
R1 Zone Setback Requirements
| Direction | Required Setback | Unit |
|---|---|---|
| Front | 20 | feet |
| Side | 5 | feet |
| Rear | 15 | feet |
LAMC Section 12.09. Front setback measured from front property line. Side yard 5 ft minimum each side.
Setback data sourced from Los Angeles Zoning Code. Last verified 2026-04-07.
How to Use the Setback Visualizer
Using the Setback Visualizer is straightforward. First, select your city using the city search box. The tool covers the top 100 US cities by population, each with setback data sourced from official municipal zoning codes and planning department documents. Second, select your zoning district from the dropdown. The selector combines residential, commercial, and mixed-use zones — all zone types have setback requirements. If you are unsure of your property's zone, look up your address in your city's online zoning map or GIS portal. Third, enter your lot dimensions in the width and depth fields. Width is the measurement from one side property line to the other, typically parallel to the street. Depth is the measurement from the front property line to the rear property line. Most standard urban lots range from 25 to 75 feet wide and 80 to 150 feet deep. Fourth, the diagram updates instantly — no button click needed. As you adjust any input, the SVG diagram recalculates and redraws in real time showing your lot, setback zones, and buildable envelope. A table below the diagram shows the exact raw setback values from your city's zoning code, including any notes about measurement methods or exceptions.
Reading the Setback Diagram
The setback diagram uses a top-down view of your lot scaled to fit the display area. The outermost dark-outlined rectangle represents your property boundary — the legal edges of your lot. The shaded amber overlay along each edge of the lot represents the required setback zone — the area where no permanent structure may be placed under your city's zoning code. The front setback appears at the top of the diagram (street side), the rear setback at the bottom, and side setbacks along the left and right edges. The dashed teal rectangle in the center of the diagram represents your buildable area — the portion of your lot where structures may legally be placed. Dimension labels on each edge show the setback distance in feet. If your lot dimensions are smaller than the combined setbacks required by the zone — for example, a very narrow lot where both side setbacks exceed the available width — the tool will display a warning that no buildable area exists under current zoning, and the buildable area rectangle will not appear. For zones where a setback value is expressed as a percentage (such as ten percent of lot width, minimum five feet), the diagram renders the percentage-based calculation using your entered lot dimensions.
Why Setbacks Matter
Building within a required setback zone triggers a cascade of legal and financial consequences. A structure that encroaches into a setback is a zoning violation — the city can issue stop-work orders, impose fines, and in serious cases require demolition or removal of the encroaching structure at the owner's expense. Setback violations also appear in title searches and can complicate or block property sales if discovered during escrow. The only path to building in a setback zone is obtaining a variance — a formal exception to the zoning code — which requires a public hearing, neighbor notification, and a showing of genuine hardship. Variances are expensive to pursue, typically costing $1,000 to $5,000 in filing fees and legal or consultant time, and they are not guaranteed. Setback requirements exist for important public purposes. Front and side setbacks preserve fire access corridors so emergency vehicles and personnel can reach structures safely. Side setbacks protect neighbor light and air access, reducing the canyon effect of closely spaced buildings. Rear setbacks preserve privacy and maintain usable outdoor space. Understanding your setbacks before designing a project is not just a compliance exercise — it directly shapes the size, placement, and feasibility of any addition, ADU, or new structure you are considering.
Source: https://codelibrary.amlegal.com/codes/los_angeles/latest/lamc/. Last verified April 7, 2026. View source